As a type of hydraulic rotary actuator, a helical hydraulic rotary actuator exhibits a large
angle, high torque, and compact structure; hence, it has been widely used in various fields …

An adaptive robust controller is introduced for high-precision tracking control problems of
robotic manipulators with output constraints. A nonlinear function is employed to transform …

This paper presents a strategy for a fractional order fuzzy proportional integral derivative
controller (FOFPID) controller for trajectory-tracking control of an electro-hydraulic rotary …

Mechanical products are becoming more diversified with the continuous development of
precision processing and materials technologies. The friction force generated by the O-ring …

The wind energy conversion system (WEC) has been increasingly proposed to capture wind
energy producing electrical power in high efficiency. One of the most important factors that …

In order to realize precise position tracking of a novel circular hydraulic actuator with
parameter uncertainties and bounded disturbances, an adaptive sliding mode controller …

This paper presents a robust control regarding position control of an electro-hydraulic rotary
actuator (EHRA) system under the presence of the lumped uncertainties such as the variant …

This paper proposes a fault estimation and fault-tolerant control strategy with two observers
for a pump-controlled electro-hydraulic system (PCEHS) under the presence of internal …

This paper focuses on the robust output feedback tracking control for n-DOF (degree-of-
freedom) robot manipulators with limited state measurements. An improved extended high …

This paper presents an adaptive robust controller for tracking control problems of robotic
manipulators with output constraints. To realize the constrained objective, the controller is …