How to create an input that is a function of State

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Shilp Dixit 2012-10-23

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采纳的回答： Azzi Abdelmalek

I have a mechanical system with:

2 Inputs (i, fs)

4 states(x1, x2, x3, x4)

2 outputs(y1=x1 and y2=x3)

I want the input 'fs' as a function of two states x2 and x4. How can i do that?...

Does this problem require state feedback and how can I use it for a practical problem.

Thanks

Shilp

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Azzi Abdelmalek 2012-10-23

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https://ww2.mathworks.cn/matlabcentral/answers/51612-how-to-create-an-input-that-is-a-function-of-state#answer_62910

In your SS block, initialy c=[1 0 0 0;0 0 1 0] and d=[0 0;0 0]

If you want to use x2 and x4, set c=eye(4) and d=zeros(4,2), you will obtain 4 output in this order x1, x2, x3 and x4. use x1 and x3 as output, and do whatever you want with x2 and x4

Shilp, Now you are asking another question. I don't know which method you are using to control your system. In real application, sometimes we have'nt acces to states measurment, the states x2 and x4 are estimated (Kalman filter for example).

Shilp Dixit 2012-10-24

Hi,

I think I got all my doubts cleared. Will work on creating the control algorithm. Will approach if I have any more doubts. I have had no formal education in the field of dynamics and control and hence the numerous doubts.

Thanks for your patience.

Regards

Shilp

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