Problem with vector definition for PID controller problem

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Ashwin Jose ，2021-11-14

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回答： Srivardhan Gadila ，2021-11-17

Error says input delay must have same amout of entries as other. Num, den and input delay all have 7 terms ?Where have i made a mistake

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Answer 1

Srivardhan Gadila 2021-11-17

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https://ww2.mathworks.cn/matlabcentral/answers/1586454-problem-with-vector-definition-for-pid-controller-problem#answer_833329

The InputDelay must either be a scalar for a SISO system or a Nu-by-1 vector for multi-input system, where the numerator, denominator is specified as an Ny-by-Nu cell array of row vectors to specify a MIMO transfer function, where Ny is the number of outputs and Nu is the number of inputs.

In this case the value of Ny = 7 and Nu = 1. Hence the size of 'InputDelay' vector cannot can be 7x1.