Fault-tolerant gaits in robotpsilas locomotion are defined as gaits with which legged robot can continue their walking after a failure event occurs to a leg of the robot. This means that for a given type of failure, the problem of finding fault-tolerant gaits can be formulated with which legged robots can continue their walking after an occurrence of a failure, maintaining static stability. The considered failure is a locked joint failure which prevents a joint of a leg from moving and makes it locked in a known place. Mathematical relations that express the stride length, the duty factor and the stability margin are determined for straight-line motion and for crab locomotion, respectively. Based on above results, the straight-line and crab walking over flat terrain can be generalized to cover the case of locomotion on constant slope terrain.

This paper was written to describe a way to display multi-lingual information on websites, while optimizing for readability, speed and content distribution. Over the last decade, the authors have noticed that most users with limited understanding of the English language encountered major difficulties in using many Internet services. Also many of the official government and local administration websites display content only in the native language, effectively raising a barrier for many foreign investors. This document also presents an analysis on adapting and distributing content optimized for age groups and local cultures, while describing techniques on server and domain spanning, SQL data distribution and methods of obtaining high quality translations for user generated content.

This paper analyses the communications and social structure of whale pods and tries to apply their principles on cooperative robot structures which can be guided to perform a certain task. The communication patterns and social structure are presented at first in order to define real, natural phenomena which can then be translated through cooperative robotic structures. Whale communication has suffered modifications in the latter years mostly because of the increase of noise in the ocean. Problems regarding communications between the cooperative structures chosen for modelling whale behavior are solved by data fusion techniques. In the last part of the paper the problem of dynamic compensation of disturbances is studied with regard to cooperative structures.

In recent decades, the field of physical rehabilitation, with the help of robotic systems that aid the population of any age with locomotor difficulties, has been evolving rapidly. Several robotic exoskeleton systems of the lower limbs have been proposed in the patent literature and some are even commercially available. Given the above, we are asking ourselves at the end of the COVID-19 pandemic: how much has this pandemic affected both the publication of patents and the application of new ones? How has new patents’ publication volume or application in robotic exoskeleton systems changed? We hypothesize that this pandemic has caused a reduction in the volume of new applications and possibly publications. We compare pandemic analysis and the last decade’s analysis to answer these questions. In this study, we used a set of statistical tests to see if there were any statistically significant changes. Our results show that the pandemic had at least one effect on applying for new patents based on the information analyzed from the three databases examined.

This paper presents a new conception and analyzes a hyperredundant continuous robot (continuous style manipulator), drive system, and control strategy. The robot includes ten flexible segments and can be extended to several components as needed. The chosen hyper-redundant robot has a continuous infinite hybrid structure (HHRIC), based on hydraulic control with a rheological element. This system combines the advantage of a joint-level drive with a lightweight construction similar to the base-driven robots. It is suitable for tasks such as wiring in hard-toreach areas (caves, subaccounts, steep areas), transportation of fluids or food to areas affected by natural disasters (people buried under ruins), exploration in difficult areas (speleological research). Generally, the control algorithms for hyper-redundant robots are specific to the robots’ constructive particularities to which they have applied and the environment in which they operate. Experimental results validate the proposal robot design and control strategies in virtual reality. As a result, it is concluded that hyper-redundant robots and immersive technologies should play an essential role soon in automated and teleoperation applications.

The pick and place mechatronic structures have a wide use in the industrial world. From semi finished positioning systems, to planting parts, to welding systems, engraving systems, cutting machining, or 3D printers. In this paper the authors have proposed to create a complete pick and place system, with a low price, able to reconfigure the entire mechatronic system by using an HMI interface, developed by the authors, through a minimal intervention on the adaptation of the z axis to the specific application. Thus, the system can be set up via the HMI interface to support a drawing, cutting, laser engraving or 3D printer. Such a structure is extremely useful in training, with every engine being tracked via the HMI interface for the developed torque, speed, current and voltage absorbed in real time but also to service-providing Small and Medium Enterprises through its versatility and low cost.