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A NONLINEAR VIBRATION DAMPING CONTROLLER FOR TWO-MASS-MODEL DRIVE SYSTEMS
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| Author(s) |
R. Dhaouadi; K. Kubo |
| Abstract |
This paper presents a nonlinear speed controller for the suppression of mechanical vibrations in two-mass-model elastic systems. The nonlinear controller is designed to proyide an optimum response of the load speed with minimum response time and minimum overshoot
when stimulated by step input commands. The control system is based on an outer load speed
feedback loop, an inner load speed acceleration feedback loop and a secondary nonlinear negative feedforward path which supplements the torque command. The nonlinear signal is derived from the load speed error and the difference between the motor speed and the load speed. Accordingly, the motor torque is automatically varied in a nonlinear manner to drive the load with a damped response and with no torsional vibrations. The synthesis process of the
feedback gains and the nonlinear function is carried out in the phase-plane by specifying a
desired phase trajectory which results in a nonlinear differential equation describing the behavior of the system. The simulation results obtained indicate that the proposed nonlinear
control system has significant advantages over the equivalent linear system and is very effective for vibration suppression in two-mass-model elastic systems. |
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| Filesize: | 423.3 KB |
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| Type |
Members Only |
| Date |
Last modified 2016-03-08 by System |
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