This paper presents a novel approach for controlling electrically driven robot manipulators based on voltage control. The voltage-based control is preferred comparing to torque-based control. This approach is robust in the presence of manipulator uncertainties since it is free of the manipulator model. The control law is very simple, fast response, efficient, robust, and can be used for high-sp...

Novel robotic applications have demanded lighter robots that can be driven using small amounts of energy, for example robotic booms in the aerospace industry, where lightweight manipulators with high performance requirements (high speed operation, better accuracy, high payload/weight ratio) are required (Wang & Gao, 2003). Unfortunately, the flexibility of these robots leads to oscillatory beha...

This paper presents a discrete-time robust control for electrically driven robot manipulators in the task space. A novel discrete-time model-free control law is proposed by employing an adaptive fuzzy estimator for the compensation of the uncertainty including model uncertainty, external disturbances and discretization error. Parameters of the fuzzy estimator are adapted to minimize the estimat...

Many space applications require robotic manipulators which have large workspace and are capable of precise motion. Micro-macro manipulators are considered as the best solution to this demand. Such systems consist of a long flexible arm and a short rigid arm. Kinematic redundancy and presence of unactuated flexible degrees of freedom, makes it difficult to control micro-macro manipulators. This ...

The method of end-effector pose accuracy improvement using joint error mutual compensation for robotic manipulators with rotation joints was presented. The computer simulation and experiments of the developed method showed that it was possible to perform the technological operations with a higher accuracy in the special areas of the robot working space using the developed approach. The method p...

Many studies have been conducted for quantitative/qualitative analysis and comparison of various teleoperation schemes. Position-position, force-position and 4-channels are to name a few. However most of this research has been focused on electrically actuated manipulators. This paper documents the comparative study of various teleoperation schemes explicitly for hydraulic manipulators. Identica...

This paper is concerned with the problem of design and implementation a robust adaptive control strategy for flexible joint electrically driven robots (FJEDR), while considering to the constraints on the actuator voltage input. The control design procedure is based on function approximation technique, to avoid saturation besides being robust against both structured and unstructured uncertaintie...

[32] Nader Sadegh and Roberto Horowitz. Stability and robustness analysis of a class of adaptive controllers for robotic manipulators. [40] John T. Wen and David S. Bayard. Robust control for robotic manipulators part ii: Adaptive case. Comparative experiments with a new adaptive controller for robot arms.