gait rehabilitation using body weight support on a treadmill is a recommended rehabilitation technique for neurological injuries, such as spinal cord injury. in this paper, a new robotic orthosis is presented for treadmill training. in the presented design the criteria such as low inertia of robot components, backdrivability, high safety and degrees of freedom based on human walking are conside...

one of the most important challenges in nonlinear, multi-input multi-output (mimo) and time variant systems (e.g., robot manipulator) is designing a controller with acceptable performance. this paper focused on design a new artificial non linear controller with on line tunable gain applied in the robot manipulator. the sliding mode fuzzy controller (smfc) was designed as 7 rules mamdani’s infer...

In order to develop a high performance working robot, we designed and developed a new robot based on the concept of "Limb Mechanism" for integration of legged locomotion and arm manipulation. The developed robot has six limbs which can be used for both locomotion and manipulation. Six limbs are set on vertices of regular hexagonal body so that this robot can have ominidirectional manipulability...

Event based controller has been implemented to teleoperate the real mobile robot efficiently. The system consists of master haptic device, slave robot and a communication network. On master side with the help of visual aid and real time force feedback acting on the robot the operator control and navigate the robot and receive sensory feedback. Environmental force which is acting on slave robot ...

To achieve various manipulation tasks by robot fingers, we have to use both position control and force control appropriately. In this paper, we propose a method to determine such control modes of robot fingers in graspless manipulation. Using the method, we can assign a positionor force-control mode to each robot finger so that the maximum manipulation stability will be achieved without excessi...

The main goal of the proposed research is to develop a team of micro-machines for in-situ repair and maintenance within constrained and hazardous environments. The use of micro-machines removes human workers from having to crawl within highly cluttered and constrained spaces, breathing in stale air mixed with fumes from welding or particulates from repair work, and provides higher reliability a...

Biped robots have better mobility than conventional wheeled robots. The bio-inspired method based on a central pattern generator (CPG) can be used to control biped robot walking in a manner like human beings. However, to achieve stable locomotion, it is difficult to modulate the parameters for the neural networks to coordinate every degree of freedom of the walking robot. The zero moment point ...

The paper presents new concepts and approaches of multi-stage fuzzy method of walking robots using resolved acceleration control. Several compliant control methods were analyzed in order to obtain high performances in robot trajectory control, which generates position and force parameters for multi-stage fuzzy control, some of which include a dynamic model in loop control and some of which does...

This paper presents an energy efficient dynamically stable gait for a Nao humanoid robot. In previous work we identified a dynamically stable and energy efficient gait in the sagittal or walking direction of a Nao robot. This gait proved to be more energy efficient than the standard gait, provided by the manufacturer. Dynamic stability in the lateral direction was not addressed. Lateral stabili...