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Unmanned Aerial Vehicles (UAVs) have received numerous attention since they can be used in many applications. Like other systems around us, UAVs are vulnerable to different faults. If a fault appears in UAVs, they should be able to perform their mission within an acceptable level. To ensure successful missions, fault tolerant control (FTC) algorithms need to be used for UAVs. By using FTC algorithms, the system can increase the level of autonomy that allows self-reconfiguration. Having a certain redundancy level in the system, is a prerequisite for the success of FTC techniques. In this paper, the fault recoverability measure for nonlinear systems is presented. The presented measure can be used to ensure that a sufficient redundancy level for the success of FTC exists in the system. It also gives insight into the ways to improve the redundancy level in the systems design process. To extend the notion of fault recoverability to nonlinear systems empirical gramians are used. The proposed method is used to calculate fault recoverability for multirotor UAVs to reveal its relation to redundant actuation possibilities in the model.
MaryamSadat Tahavori; Agus Hasan. Fault recoverability for nonlinear systems with application to fault tolerant control of UAVs. Aerospace Science and Technology 2020, 107, 106282 .
AMA StyleMaryamSadat Tahavori, Agus Hasan. Fault recoverability for nonlinear systems with application to fault tolerant control of UAVs. Aerospace Science and Technology. 2020; 107 ():106282.
Chicago/Turabian StyleMaryamSadat Tahavori; Agus Hasan. 2020. "Fault recoverability for nonlinear systems with application to fault tolerant control of UAVs." Aerospace Science and Technology 107, no. : 106282.
Distribution networks are important components of power and energy infrastructure. Today's distribution networks are vulnerable to different types of faults. To make the electric grid more resilient, it is important to detect and locate faults in distribution lines quickly and accurately. Impedance methods are the most common ways used to locate the faults. In this paper, first possible fault locations are identified using the improved impedance method. Then, its natural frequencies are determined. Since there are more than one possible fault locations, it is necessary to identify the fault section in order to determine the fault location accurately. The fault section and its main location are determined through simulating the fault in each section of possible locations. This is done by small steps and through accommodating the determined frequency to the existing natural frequency registered in the original fault voltage form. The proposed method is applied in Salim's 11-node network in which effect of fault inception angles, effect of different resistors and fault type are tested. Accuracy and efficiency of the proposed method has been verified.
Rahman Dashti; MaryamSadat Tahavori; Mohammad Daisy; Hamid Reza Shaker. A New Matching Algorithm for Fault Section Estimation in Power Distribution Networks. 2018 International Symposium on Advanced Electrical and Communication Technologies (ISAECT) 2018, 1 -4.
AMA StyleRahman Dashti, MaryamSadat Tahavori, Mohammad Daisy, Hamid Reza Shaker. A New Matching Algorithm for Fault Section Estimation in Power Distribution Networks. 2018 International Symposium on Advanced Electrical and Communication Technologies (ISAECT). 2018; ():1-4.
Chicago/Turabian StyleRahman Dashti; MaryamSadat Tahavori; Mohammad Daisy; Hamid Reza Shaker. 2018. "A New Matching Algorithm for Fault Section Estimation in Power Distribution Networks." 2018 International Symposium on Advanced Electrical and Communication Technologies (ISAECT) , no. : 1-4.
The distribution network is extended throughout cities, towns, and villages. Because of the increase in loads and the decrease in power passageways and public corridor reduction, double circuit lines are increasingly being used instead of single circuit lines. Fault location in double circuit power networks is very important because it decreases the repair time and consequently the power outage time. In this paper, a new improved method for fault location in double circuit medium power distribution lines is proposed. The suggested impedance-based fault location method takes into account the mutual effect of double circuit lines on each other. To the best of our knowledge, the proposed method is the first of its kind which supports double circuit distribution networks. In the proposed method, a new quadratic equation for locating fault in power distribution networks is obtained using recorded voltage and current at the beginning of feeder. In this method, the π line model is used for improving the accuracy of the suggested method. The proposed method is supported by mathematical proofs and derivation. To evaluate the accuracy of the proposed method, the proposed method is tested on a thirteen-node network in different conditions, such as instrument error, various fault resistances, and different fault inception angles in various distances and fault types. The numerical results confirm the high accuracy and validity of the proposed method.
Rahman Dashti; Seyed Mehdi Salehizadeh; Hamid Reza Shaker; MaryamSadat Tahavori. Fault Location in Double Circuit Medium Power Distribution Networks Using an Impedance-Based Method. Applied Sciences 2018, 8, 1034 .
AMA StyleRahman Dashti, Seyed Mehdi Salehizadeh, Hamid Reza Shaker, MaryamSadat Tahavori. Fault Location in Double Circuit Medium Power Distribution Networks Using an Impedance-Based Method. Applied Sciences. 2018; 8 (7):1034.
Chicago/Turabian StyleRahman Dashti; Seyed Mehdi Salehizadeh; Hamid Reza Shaker; MaryamSadat Tahavori. 2018. "Fault Location in Double Circuit Medium Power Distribution Networks Using an Impedance-Based Method." Applied Sciences 8, no. 7: 1034.
The problem of sensor and actuator placement is computationally expensive in particular in dealing with large-scale systems. This problem is even more computationally intensive in the case of switched systems. In this paper, we propose a new numerical approach for sensor and actuator placement for large-scale switched systems. We first introduce restricted genetic algorithm (RGA). RGA is an evolutionary algorithm which is developed specifically for sensors and actuator placement. We then use RGA to reduce the computational burden of the sensor and actuator placement for switched system. The proposed method uses the generalized gramians for switched systems which are called nice gramians. The nice gramians quantify the level of observability and reachability of switched systems. To the best of our knowledge, this paper presents the first results on sensor and actuator placement of switched systems. We show the effectiveness of the approach with the help of numerical examples.
Masoud Seyed Sakha; Hamid Reza Shaker; MaryamSadat Tahavori. Optimal sensors and actuators placement for large-scale switched systems. International Journal of Dynamics and Control 2018, 7, 147 -156.
AMA StyleMasoud Seyed Sakha, Hamid Reza Shaker, MaryamSadat Tahavori. Optimal sensors and actuators placement for large-scale switched systems. International Journal of Dynamics and Control. 2018; 7 (1):147-156.
Chicago/Turabian StyleMasoud Seyed Sakha; Hamid Reza Shaker; MaryamSadat Tahavori. 2018. "Optimal sensors and actuators placement for large-scale switched systems." International Journal of Dynamics and Control 7, no. 1: 147-156.
Fault location techniques play an essential role in system recovery and repair. Therefore, numerous methods have been presented for fault location in power transmission and distribution networks. The contribution of this paper is to extend the state-of-art impedance-based fault location methods to support four-wire power distribution. To make this possible an algorithm is developed. The method is obtained using principles of circuit theory and overcomes the challenges which prevent use of most fault location methods for distribution networks in practice. The paper presents the detailed equations which are used in the algorithm and how they are obtained. The satisfactory performance of the algorithm is confirmed with numerical examples using MATLAB software.
Rahman Dashti; Mohammad Daisy; Hamid Reza Shaker; MaryamSadat Tahavori. Impedance-Based Fault Location Method for Four-Wire Power Distribution Networks. IEEE Access 2017, 6, 1342 -1349.
AMA StyleRahman Dashti, Mohammad Daisy, Hamid Reza Shaker, MaryamSadat Tahavori. Impedance-Based Fault Location Method for Four-Wire Power Distribution Networks. IEEE Access. 2017; 6 (99):1342-1349.
Chicago/Turabian StyleRahman Dashti; Mohammad Daisy; Hamid Reza Shaker; MaryamSadat Tahavori. 2017. "Impedance-Based Fault Location Method for Four-Wire Power Distribution Networks." IEEE Access 6, no. 99: 1342-1349.
It is well-known that gramians are specific matrices which show the degree of controllability and observability. Therefore gramians are very popular in applications such as model reduction and control configuration selection. The frequency-interval controllability and observability gramians have been recently introduced for bilinear systems as the solutions to the generalized frequency-interval Lyapunov equations. Analogous to ordinary gramians for bilinear systems, it might happen that the frequency-interval Lyapunov equations have unique solutions which are not controllability and observability gramians of the bilinear systems. In other words, solvability of the frequency-interval Lyapunov equations does not guarantee the existence of the frequency-interval gramians. In this paper, the conditions which are required for the existence of frequency-interval gramians are obtained. Further, to cope with the problem of the existence of gramians, a scaling-based method is proposed. A proof for the theorem which suggests an iterative scheme for computing the frequency-interval generalized gramians is also presented in this paper.
Hamid Reza Shaker; MaryamSadat Tahavori. On the existence of frequency-interval gramians for bilinear systems. European Journal of Control 2017, 38, 47 -51.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. On the existence of frequency-interval gramians for bilinear systems. European Journal of Control. 2017; 38 ():47-51.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2017. "On the existence of frequency-interval gramians for bilinear systems." European Journal of Control 38, no. : 47-51.
The control technology has been orientated towards decentralized and partially decentralized control strategies. To ensure the success of a decentralized or a partially decentralized control in practice, the first necessary step is to determine a suitable control structure. The control structure selection which is the task of selecting suitable input and output pairs for control design is therefore very important. This paper focuses on control structure selection for discrete-time MIMO bilinear systems. The generalized cross-gramian is introduced in this paper for discrete-time bilinear processes and plants. The existence of the generalized cross-gramian is studied and it is shown that if the cross-gramian exists, it can be obtained by solving a generalized Sylvester equation. To solve the generalized Sylvester equation in a computationally efficient way, an iterative method is developed and presented. The generalized cross-gramians are computed for all SISO subsystems of the discrete-time MIMO bilinear systems. These gramians are used to build the generalized Hankel Interaction Index Array which is used for control structure selection. The proposed method for control structure selection is among the few methods supporting bilinear processes and plants, enjoys the advantages of gramian based methods and it is more efficient in terms of computations compared to its counterparts.
Hamid Reza Shaker; MaryamSadat Tahavori. Generalized Hankel Interaction Index Array for control structure selection for discrete-time MIMO bilinear processes and plants. 53rd IEEE Conference on Decision and Control 2014, 3149 -3154.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. Generalized Hankel Interaction Index Array for control structure selection for discrete-time MIMO bilinear processes and plants. 53rd IEEE Conference on Decision and Control. 2014; ():3149-3154.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2014. "Generalized Hankel Interaction Index Array for control structure selection for discrete-time MIMO bilinear processes and plants." 53rd IEEE Conference on Decision and Control , no. : 3149-3154.
Decentralised and partially decentralised control strategies are very popular in practice. To come up with a suitable decentralised or partially decentralised control structure, it is important to select the appropriate input and output pairs for control design. This procedure is called control configuration selection. It is well known that a suitable control configuration selection is an important prerequisite for a successful industrial control. In this paper the problem of control configuration selection for multiple-input and multiple-output (MIMO) bilinear processes is addressed. First, the concept of the cross-gramian is developed for bilinear systems. The conditions for the existence of generalised cross-gramian are derived. It is shown that if the cross-gramian exists it is the solution to the generalised Sylvester equation. To obtain the cross-gramian in a more computationally efficient way, an iterative method for solving the generalised Sylvester equation is proposed. The generalised cross-gramian is used to form the generalised Hankel interaction index array. The generalised Hankel interaction index array is used for control configuration selection of MIMO bilinear processes. Most of the results on control configuration selection, which have been proposed so far, can only support linear systems. The proposed method supports bilinear processes, takes the effects of dynamics of the process into account and can be used to propose a richer (sparse or block diagonal) controller structure. More importantly, since for each element of generalised Hankel interaction index array just one generalised Sylvester equation is needed to be solved, the proposed control configuration selection method is computationally more efficient than its gramian-based counterparts.
Hamid Reza Shaker; MaryamSadat Tahavori. Control configuration selection for bilinear systems via generalised Hankel interaction index array. International Journal of Control 2014, 88, 30 -37.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. Control configuration selection for bilinear systems via generalised Hankel interaction index array. International Journal of Control. 2014; 88 (1):30-37.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2014. "Control configuration selection for bilinear systems via generalised Hankel interaction index array." International Journal of Control 88, no. 1: 30-37.
Hamid Reza Shaker; MaryamSadat Tahavori. Time-interval model reduction of bilinear systems. International Journal of Control 2014, 87, 1487 -1495.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. Time-interval model reduction of bilinear systems. International Journal of Control. 2014; 87 (8):1487-1495.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2014. "Time-interval model reduction of bilinear systems." International Journal of Control 87, no. 8: 1487-1495.
In this technical note, a new method for model reduction of bilinear systems is presented. The method is developed in particular for many applications in which one is interested to approximate a system in a given frequency-interval. To this end, new generalized frequency-interval gramians are introduced for bilinear systems. It is shown that these gramians are the solutions to the so-called frequency-interval generalized Lyapunov equations. The conditions for these equations to be solvable are derived and an algorithm is proposed to solve such equations iteratively. The method is further illustrated with the help of an illustrative example. The numerical results show that the method is more accurate than its previous counterpart which is based on the ordinary gramians.
Hamid Reza Shaker; MaryamSadat Tahavori. Frequency-Interval Model Reduction of Bilinear Systems. IEEE Transactions on Automatic Control 2013, 59, 1948 -1953.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. Frequency-Interval Model Reduction of Bilinear Systems. IEEE Transactions on Automatic Control. 2013; 59 (7):1948-1953.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2013. "Frequency-Interval Model Reduction of Bilinear Systems." IEEE Transactions on Automatic Control 59, no. 7: 1948-1953.
Water leakage is an important component of water loss. Many methods have emerged from urban water supply systems for leakage control, but it still remains a challenge in many countries. Pressure management is an effective way to reduce the leakage in a system. It can also reduce the power consumption. To this end, an optimal control strategy is proposed in this paper. In the water supply system model, the hydraulic resistance of the valve is estimated by the real data from a water supply system and it is considered to be a disturbance. The method which is used to solve the nonlinear optimal control problem is the interior point method. The method which is used in this paper can be used for a general hydraulic networks to optimize the leakage and energy consumption and to satisfy the demands at the end-users.
MaryamSadat Tahavori; John Leth; Carsten Kallesøe; Rafael Wisniewski. Optimal control of nonlinear hydraulic networks in the presence of disturbance. Nonlinear Dynamics 2013, 75, 539 -548.
AMA StyleMaryamSadat Tahavori, John Leth, Carsten Kallesøe, Rafael Wisniewski. Optimal control of nonlinear hydraulic networks in the presence of disturbance. Nonlinear Dynamics. 2013; 75 (3):539-548.
Chicago/Turabian StyleMaryamSadat Tahavori; John Leth; Carsten Kallesøe; Rafael Wisniewski. 2013. "Optimal control of nonlinear hydraulic networks in the presence of disturbance." Nonlinear Dynamics 75, no. 3: 539-548.
Pressure management in water supply systems is an effective way to reduce the leakage in a system. In this paper, the pressure management and the reduction of power consumption of a water supply system is formulated as an optimization problem. The problem is to minimize the power consumption in pumps and also to regulate the pressure at the end-user valves to a desired value. The optimization problem which is solved is a nonlinear and non-convex optimization. The barrier method is used to solve this problem. The modeling framework and the optimization technique which are used are general. They can be used for a general hydraulic networks to optimize the leakage and energy consumption and to satisfy the demands at the end-users. The results in this paper show that the power consumption of the pumps is reduced.
MaryamSadat Tahavori; Carsten Kallesoe; John Leth; Rafael Wisniewski. Nonlinear non-convex optimization of hydraulic networks. 2013 IEEE International Conference on Control Applications (CCA) 2013, 894 -898.
AMA StyleMaryamSadat Tahavori, Carsten Kallesoe, John Leth, Rafael Wisniewski. Nonlinear non-convex optimization of hydraulic networks. 2013 IEEE International Conference on Control Applications (CCA). 2013; ():894-898.
Chicago/Turabian StyleMaryamSadat Tahavori; Carsten Kallesoe; John Leth; Rafael Wisniewski. 2013. "Nonlinear non-convex optimization of hydraulic networks." 2013 IEEE International Conference on Control Applications (CCA) , no. : 894-898.
Hamid Reza Shaker; MaryamSadat Tahavori. Frequency-interval control configuration selection for multivariable bilinear systems. Journal of Process Control 2013, 23, 894 -904.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. Frequency-interval control configuration selection for multivariable bilinear systems. Journal of Process Control. 2013; 23 (6):894-904.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2013. "Frequency-interval control configuration selection for multivariable bilinear systems." Journal of Process Control 23, no. 6: 894-904.
In this article, a new method for model reduction of linear dynamical systems is presented. The proposed technique is from the family of gramian-based relative error model reduction methods. The method uses time-interval gramians in the reduction procedure rather than ordinary gramians and in such a way it improves the accuracy of the approximation within the time interval which is applied. It is proven that the reduced order model is stable when the proposed method applies to a stable system. The method uses a recently proposed inner–outer factorisation algorithm which enhances the numerical accuracy and efficiency. In order to avoid numerical instability and also to further increase the numerical efficiency, projector matrices are constructed instead of the similarity transform approach for reduction. The method is illustrated by a numerical example and finally it is applied to a practical CD player example. The numerical results show that the method is more accurate than ordinary balanced stochastic truncation.
MaryamSadat Tahavori; Hamid Reza Shaker. Model reduction via time-interval balanced stochastic truncation for linear time invariant systems. International Journal of Systems Science 2013, 44, 493 -501.
AMA StyleMaryamSadat Tahavori, Hamid Reza Shaker. Model reduction via time-interval balanced stochastic truncation for linear time invariant systems. International Journal of Systems Science. 2013; 44 (3):493-501.
Chicago/Turabian StyleMaryamSadat Tahavori; Hamid Reza Shaker. 2013. "Model reduction via time-interval balanced stochastic truncation for linear time invariant systems." International Journal of Systems Science 44, no. 3: 493-501.
Water leakage is an important component of water loss. Many methods have emerged from urban water supply systems (WSSs) for leakage control, but it still remains a challenge in many countries. Pressure management is an effective way to reduce the leakage in a system. It can also reduce the power consumption. To have a better understanding of leakage in WSSs, to control pressure and leakage effectively, and for optimal design of WSSs, suitable modeling is an important prerequisite. In this paper a model with the main objective of pressure control and consequently leakage reduction is presented. Following an analogy to electric circuits, first the mathematical expression for pressure drop over each component of the pipe network (WSS) such as pipes, pumps, valves and water towers is presented. Then the network model is derived based on the circuit theory and subsequently used for pressure management in the system. A suitable projection is used to reduce the state vector and to express the model in standard state-space form.
MaryamSadat Tahavori; Tom Nørgaard Jensen; Carsten Kallesøe; John Leth; Rafael Wisniewski. Toward model-based control of non-linear hydraulic networks. Journal of Vibration and Control 2012, 19, 2145 -2153.
AMA StyleMaryamSadat Tahavori, Tom Nørgaard Jensen, Carsten Kallesøe, John Leth, Rafael Wisniewski. Toward model-based control of non-linear hydraulic networks. Journal of Vibration and Control. 2012; 19 (14):2145-2153.
Chicago/Turabian StyleMaryamSadat Tahavori; Tom Nørgaard Jensen; Carsten Kallesøe; John Leth; Rafael Wisniewski. 2012. "Toward model-based control of non-linear hydraulic networks." Journal of Vibration and Control 19, no. 14: 2145-2153.
Accurate and reliable process measurements play a key role in the success of process control. In addition to selecting the instrumentation hardware, it is important to determine which variables should be measured in a process. Therefore it is important to study techniques for placing sensors on the processes. Dually the problem of placing actuators on the processes is equally important. In this paper, the problem of determining optimal sensor and actuator locations for the linear systems is addressed. The problem of the sensor locations is viewed as the problem of maximizing the output energy generated by a given state and for the actuator locations is viewed as the problem of minimizing the input energy required to reach a given state. Such design problems occur in many applications, and therefore have been studied extensively. Unfortunately, the results in this context, which have been proposed so far, only support stable systems. However, in industrial practices it is often the case that the system, which is needed to be controlled, is not stable. The method which is proposed in this paper is a general method in the sense that it supports both stable and unstable systems. The technique is successfully used for determining the optimal sensor locations of the linearized Continuous Stirred-Tank Reactor unstable model.
Hamid Reza Shaker; MaryamSadat Tahavori. Optimal sensor and actuator location for unstable systems. Journal of Vibration and Control 2012, 19, 1915 -1920.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. Optimal sensor and actuator location for unstable systems. Journal of Vibration and Control. 2012; 19 (12):1915-1920.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2012. "Optimal sensor and actuator location for unstable systems." Journal of Vibration and Control 19, no. 12: 1915-1920.
Water leakage is an important component of water losses. Many methods have emerged from urban water supply systems for leakage control, but it still remains a challenge in many countries. To have better understanding of leakage in water supply system (WSS), to control leakage effectively and for optimal design of WSS, suitable modeling is an important prerequisite. In this paper first, the mathematical expression for pressure drop over each component of the water supply system such as pipes, pumps, valves and water towers is presented. Then the network model is derived based on the circuit theory for pressure management in the system. A suitable projection is used to reduce the state vector and to express the model in standard state-space form.
MaryamSadat Tahavori; Carsten Skovmose Kallesøe; John Leth; Rafael Wisniewski. Modeling of water supply systems: Circuit theoretic approach. 2012 7th IEEE Conference on Industrial Electronics and Applications (ICIEA) 2012, 1561 -1566.
AMA StyleMaryamSadat Tahavori, Carsten Skovmose Kallesøe, John Leth, Rafael Wisniewski. Modeling of water supply systems: Circuit theoretic approach. 2012 7th IEEE Conference on Industrial Electronics and Applications (ICIEA). 2012; ():1561-1566.
Chicago/Turabian StyleMaryamSadat Tahavori; Carsten Skovmose Kallesøe; John Leth; Rafael Wisniewski. 2012. "Modeling of water supply systems: Circuit theoretic approach." 2012 7th IEEE Conference on Industrial Electronics and Applications (ICIEA) , no. : 1561-1566.
A new mixed method for relative error model reduction of linear time-invariant systems is proposed in this paper. This order reduction technique is mainly based upon the time-weighted balanced stochastic model reduction method and singular perturbation model reduction technique. Compared to the other analogous counterparts, the proposed method provides more accurate results in terms of time-weighted norms when applied to the practical examples. It is shown that important properties of the time-weighted stochastic balanced reduction technique are extended to the mixed reduction method by using the concept and properties of the reciprocal systems. The results are further illustrated by two practical numerical examples: a model of compact disc player and a model of the atmospheric storm track.
MaryamSadat Tahavori; Hamid Reza Shaker. Relative error model reduction via time-weighted balanced stochastic singular perturbation. Journal of Vibration and Control 2011, 18, 2006 -2016.
AMA StyleMaryamSadat Tahavori, Hamid Reza Shaker. Relative error model reduction via time-weighted balanced stochastic singular perturbation. Journal of Vibration and Control. 2011; 18 (13):2006-2016.
Chicago/Turabian StyleMaryamSadat Tahavori; Hamid Reza Shaker. 2011. "Relative error model reduction via time-weighted balanced stochastic singular perturbation." Journal of Vibration and Control 18, no. 13: 2006-2016.
A new relative error model reduction technique for linear time invariant (LTI) systems is proposed in this paper. Both continuous and discrete time systems can be reduced within this framework. The proposed model reduction method is mainly based upon time-weighted balanced truncation and a recently developed inner-outer factorization technique. Compared to the other analogous counterparts, the proposed method shows to provide more accurate results in terms of time weighted norms, when applied to different practical examples. The results are further illustrated by a numerical example.
MaryamSadat Tahavori; Hamid Reza Shaker. Time-weighted balanced stochastic model reduction. IEEE Conference on Decision and Control and European Control Conference 2011, 7777 -7781.
AMA StyleMaryamSadat Tahavori, Hamid Reza Shaker. Time-weighted balanced stochastic model reduction. IEEE Conference on Decision and Control and European Control Conference. 2011; ():7777-7781.
Chicago/Turabian StyleMaryamSadat Tahavori; Hamid Reza Shaker. 2011. "Time-weighted balanced stochastic model reduction." IEEE Conference on Decision and Control and European Control Conference , no. : 7777-7781.
The objective of the methods within the framework of the plug and play process control and particularly fault tolerant control is to establish control techniques which guarantee a certain performance through control reconfiguration at the occurrence of the faults or changes. These methods cannot be effective if sufficient redundancy does not exist in the process. A measure for control reconfigurability which reveals the level of redundancy in connection with feedback control is proposed in this paper for bilinear systems. The proposed control reconfigurability measure is the extension of its gramian-based analogous counterpart, which has been previously proposed for the linear processes. The control reconfigurability is calculated for the bilinear models of an electro-hydraulic drive to show its relevance to redundant actuating capabilities in the models.
Hamid Reza Shaker; MaryamSadat Tahavori. Control reconfigurability of bilinear hydraulic drive systems. Proceedings of 2011 International Conference on Fluid Power and Mechatronics 2011, 477 -480.
AMA StyleHamid Reza Shaker, MaryamSadat Tahavori. Control reconfigurability of bilinear hydraulic drive systems. Proceedings of 2011 International Conference on Fluid Power and Mechatronics. 2011; ():477-480.
Chicago/Turabian StyleHamid Reza Shaker; MaryamSadat Tahavori. 2011. "Control reconfigurability of bilinear hydraulic drive systems." Proceedings of 2011 International Conference on Fluid Power and Mechatronics , no. : 477-480.