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This paper suggests the idea of a universal method for stabilizing discrete-time hybrid switched-control systems of robot manipulators. The core of this idea is based on an on-line trajectory generation algorithm that is able to generate continuous command variables from any arbitrary state of motion. We define a measurable criterion to on-line detect an instability or a potential instability of the...
Dynamics and control of a flexible space robot capturing a static target was presented in this paper. The dynamics model of the robot system is derived with Lagrangian formulation. The control method of flexible space during capturing target was discussed. Finally, some simulation tests have conducted that the proposed method can assurance the stability of capturing the object and reach a good effectiveness...
An adaptive control scheme is proposed for tracking a 12.6 × 12.6 m square trajectory by the endpoint of a two-link rigid joint space robot. The adaptive controller is based on the classical Transpose Jacobian control law where the controller gains are adapted using a modified version of the Simple Adaptive Control (SAC) adaptation law. The formal Lyapunov proof of stability for the adaptive control...
Many robotic tasks are specified in terms of the position and orientation (pose) of the robot end-effector. The operational space is defined by a set of generalized coordinates to describe the end-effector pose. The main contribution of this paper is a new operational space trajectory tracking controller, which does not require any velocity measurement. A rigorous stability analysis based on Lyapunov's...
Rigid planar space robot is represented as Caplygin system and its base attitude can be stabilized by means of geometric phase. However, in cases when flexible arms are used for control of base attitude, inherent resonance modes are excited and instability is resulted. In this study we propose a stabilized controller is synthesized as adaptive tracking control system convined with sliding mode control...
The control problem of coordinated motion of free-floating dual-arm space robot with external disturbance is discussed. Combined the linear momentum conversation and the Lagrangian approach, the full-controlled dynamic equations of free-floating space robot with dual-arms is established and then inverted to the state equation for control design. Based on the terminal sliding mode control (SMC) technique,...
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