An iterative learning control method is proposed to achieve precise tracking control and end-point vibration suppression of a flexible manipulator system. The learning is done in a feedback configuration with collocated PD control and the learning law updates the feedforward input from the error of the previous trial. Simulation results of the response of the manipulator with the controller are...

This paper presents the adaptive control scheme with sliding mode compensator for vibration control problem in the presence of disturbance. The dynamic model of the flexible cantilever beam using finite element modeling is derived. The adaptive control with sliding mode compensator using output feedback for output tracking is developed to reject the external disturbance, and to improve the trac...

This paper deals with the nonlinear models of regenerative chatter on machine tools. The limitations and actual problems of the existing theory are summarized. These cause difficulties in industrial applications, like in the design of optimum technological parameters, adaptive control and/or vibration-suppression strategies. An industrial machine-tool vibration case is analysed experimentally a...

Classical flight control design techniques treat the aircrafts as rigid bodies. Extra effort and time is required for the development of a separate vibration controller that addresses the flexible nature of the aircraft. Researchers have concentrated in developing integrated design techniques where a single controller is designed to provide satisfactory control of the rigid modes, and vibration...

Stability investigations of vibration quenching employing the concept of actuators with a variable stiffness are presented. Systems with an arbitrary number of degrees of freedom with linear springand damping-elements are considered, that are subject to self-excitation as well as parametric stiffness excitation. General conditions for full vibration suppression and conditions of instability are...

sacrificed, efficient controls have to be studied and developed. Feedback control techniques use measurement and estimates of the system states for control of rigid-body motion and vibration suppression. In this case, using measurements at the hub and end-point of the manipulator as the basis for applying control torque at the hub will allow control of the end-point position. Thus, feedback con...

Mechanical vibrations adversely affect mechanical components, and in the worst case, lead to serious accidents by breaking themselves. To suppress vibrations, various studies have been conducted on vibration isolation, suppression, resistance. In addition, technologies actively rapidly developed recent years, it has reported that can be suppressed with higher performance. However, these mostly ...

Torsional vibration is an oscillation phenomenon occurring at driven railway vehicle wheelsets. As the resulting dynamic stresses can be significantly larger than maximum static motor torque, axle and press fit are risk of failure. To prevent dangerous events with these, from failure, traction drive manufactures nowadays used to implement suppression algorithms in controls. In this paper, effec...