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单词 Smith predictor
释义

Smith predictor

英语百科

Smith predictor

The Smith predictor (invented by O. J. M. Smith in 1957) is a type of predictive controller for systems with pure time delay. The idea can be illustrated as follows.

Suppose the plant consists of G(z) followed by a pure time delay z^{-k}.

As a first step, suppose we only consider G(z) (the plant without a delay) and design a controller C(z) with a closed-loop transfer function H(z)=\frac{C(z) G(z)}{1+C(z)G(z)} that we consider satisfactory.

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