We developed the wireless battery charging system for an unmanned aerial vehicle (UAV) or a drone using the capacitive power transfer (CPT) technology which provides a wide charging area for the drone to land especially required at autonomous flying. As the circuit on the power receiving side or drone side must be small and light in this application, we employ the circuit where a matching circuit, a transformer and all inductors are placed in the emitting side and the circuit in the receiving side is composed of the small devices using semiconductor elements for DC-DC converter and charge controlling IC. The system validity has been verified with prototype that delivered ~12W through a combined interface capacitance of 500 pf at an operating frequency 6.78MHz and efficiency exceeding 50%.

Exhaust emission is one of the kind emission have contribute to the greenhouse effect in the world. Ethanol is one of the best tools to fight air pollution from vehicles. From its biodegradable nature to reductions in greenhouse gas and tailpipe emissions, ethanol provides a tool to address environmental concerns without requiring an entirely new way for goods and people to get from one place to another. Ethanol contains 35% oxygen and with adding oxygen to fuel results in more complete fuel combustion, reducing harmful tailpipe emissions. This paper addresses the possibility study of ethanol percentage to changing of performance and exhaust emissions for Diesel Engine using Virtual Engine Simulation Tool AVL Boost. In this study the blend formulation between Ethanol and Diesel Fuel were E0, E2.5, E5, E7.5 and E 10. The performance of diesel engine simulated in 1,000-1,500rpm with 0, 10, 20, 30, 40, 50 and 60 Nm engine loads. The direct blending of ethanol and diesel fuel has advantages reducing exhaust emissions CO, Soot and NOx percentages. The engine power break of pure diesel is slightly lower than those of E2.5-E10, especially for speed above than 1400rpm. The simulation work with the same results compare to the experiments can reduce the cost of research

An experiment on the application of diesel and ethanol blends as fuel in diesel engine was carried out at various engine loads and ethanol percentages. The experiments were performed using solar, E2.5%, E5%, E7.5%, and E10% ethanol-diesel blends and 0, 10, 20, 30, 40, 50 and 60 Nm engine loads. Several engine parameters i.e. power, brake specific fuel consumption, brake thermal efficiency, the exhaust gas temperature, and lubricating oil temperature were investigated. As a complement of the experiment, the exhaust emission characteristic of CO, HC and smoke were also investigated. The results indicate that the engine power and the indicated mean effective pressure increase with increasing of ethanol percentage. The brake specific fuel consumption and exhaust gas temperature decrease, meanwhile the lubricating oil temperature increase with increasing the ethanol content. From the experiments, as the increase of ethanol percentage content, the emission of CO, HC and smoke decrease

This paper proposes a design of power receiving side on capacitive coupling wireless power transfer for an unmanned aerial vehicle (UAV). In order to minimize a component used in the system and fitted the circuit to the drone, the realized system must be very compact and efficient. The power receiving circuit in CPT system for simple application consists of rectifier and capacitor. In an advanced method, several components added into a circuit that makes the size and weight of the system increased. In this paper, all resonant matching system is placed and controlled in the primary side, thus the secondary side circuit could have a light module with minimum components. This paper focuses on the design a secondary side of CPT consisted of a rectifier, a DC-DC buck converter, and a charging circuit. The system is designed to operate with wide range input voltage. Simulation and experimental results have demonstrated that the proposed system could obtain charging process for Li-Ion cells battery by the output power of 8 W, with the power efficiency exceeding of 77%.

Steer-by-wire (SbW) is the latest steering evolution, providing many benefits, such as reduced vehicle weight and enhanced steering capability. While reliability is one of the main concerns hindering its widespread application, the potential of this technology to revolutionize the automotive industry is huge. Control techniques play an important part in achieving the full potential of SbW by focusing on the development of its performance and safety aspects. This paper provides a review of the control techniques that are being used in SbW technology to achieve better performance and enhance safety. Various control techniques for SbW exist to serve different purposes when dealing with the non-linear nature of the SbW dynamics. Although there is no one-size-fits-all control technique for all the requirements of the SbW, this study highlights that the non-linear controllers based on the sliding mode control (SMC) are a popular option for enhancing the accuracy of SbW systems. However, these controllers often suffer from a downside known as chattering. In contrast, robust controllers like Model Predictive Controllers (MPCs) can effectively manage uncertain dynamics and eliminate chattering, although they pose challenges due to their high computational costs.

Research Centre for Electrical Power and Mechatronics, Indonesian Institute of Sciences has built test vehicle which able to monitored several parameters. The monitored data were communicated with serial protocols (RS232 and RS485) both protocols need master control like computer or microcontroller. There are several disadvantages using centralize control which are dependencies to master control and complicate wiring. To solve this problem need to design bus protocol, which able to multi master protocol. CAN is a multicast-based communication protocol (multi master) characterized by the deterministic resolution of the contention, low cost and simple implementation. This paper will purpose CAN bus multi master design protocol for research applications purpose hybrid electric vehicle using Nuvoton™ arm microcontroller