Feedforward Design for a Mechanical System with Marginally Stable Inverse
نویسندگان
چکیده
This paper considers feedforward control of a system which is described by transfer functions with marginally stable inverses. We present three different feedforward control strategies. Two of them relies on an ‘ideal’ design which is derived in the noise-free case, whereas the third is based on Wiener filtering theory. The control strategies are compared and evaluated for different signal models and in the presence of measurement noise. We show that the performance can be substantially improved by using the (optimal) Wiener feedforward controller.
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