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Control of Mechanical Oscillations for Magnetostrictive Actuator

Sergey Kochetkov, Pavel Shavrin, Sergey Kiselyov
The problem for control of mechanical oscillations of ultrasonic range for nonlinear
magnetostrictive actuator is considered. Some features of the control algorithm are demonstrated
on an example of the control system design for magnetostrictive vibrator. The solution of the
problem is obtained by creating the sliding motion in such a manner that a stable limit cycle
appears in the state space of the mechanical subsystem. Furthermore, the parameters of that
cycle can be arbitrary modified with respect to the desired behavior of the closed loop system.
Thus, the amplitude, frequency and shape of the mechanical oscillations can be adjusted on the
prescribed time law.
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