Recent success in nonlinear H∞ control design has been applied to control of robot manipulator systems. In this paper a Global H∞ robust controller is considered for tracking control problem of Robotic manipulators. The synthesis of this controller is based on Lyapunov function instead of solving the HJI equation. Performance issues of the Global H∞ robust controller are illustrated in a simula...

Purpose – The purpose of this paper is to develop sliding mode control with linear and nonlinear manifolds in discrete-time domain for robot manipulators. Design/methodology/approach – First, a discrete linear sliding mode controller is designed to an n-link robot based on Gao’s reaching law. In the second step, a discrete terminal sliding mode controller is developed to design a finite time an...

Mobile mechanical manipulators are one of the automation aspects which were revealed in last years of twentieth century. These machines assume the responsibility of human and gradually expand the domain of their activities in industry. This paper is a presentation of the Sweeper Robot designed in the Robotic Laboratory of Iran University of Science and Technology. The original design of this ro...

At present, robotic manipulators are commonly used in manufacturing industry. In many cases, their end-effectors are required to move from one place to the other and follow some desired trajectories. This paper develops a nonlinear backstepping control design scheme with velocity observers for the trajectory tracking control of robotic manipulators. In fact, most of robot manipulator controller...

This paper presents a practical approach to output feedback adaptive control for robot manipulators. A novel approach is used to design the adaptive controller. Simulations and experimental results are used to demonstrate the effectiveness of the method. The approach to the controller design is based on ease of design and implementation and not on achieving theoretical stability results. Nevert...

In order to apply the terminal sliding mode control to robot manipulators, prior knowledge of the exact upper bound of parameter uncertainties, and external disturbances is necessary. However, this bound will not be easily determined because of the complexity and unpredictability of the structure of uncertainties in the dynamics of the robot. To resolve this problem in robot control, we propose...

One of the main problems of car-like robot is robust path following in the presence of sliding effect. To tackle this problem, a robust mix H2/H∞ static state feedback control method is selected. This method is the well-known linear robust controller which is robust against external disturbance as well as model uncertainty. In this paper, the path following problem is formulated as linear matri...