About PID program block issue of simulink
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This is a simple step response in simulink:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/158041/image.png)
The parameters of the PID :Kp=0.8 Ki=0 Kd=0.85 When I designed the PID controller:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/158042/image.png)
The parameters of the PID are same as above:Kp=0.8 Ki=0 Kd=0.85 But the results will be some different:The following two charts correspond to the above two procedures。
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/158044/image.jpeg)
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/158045/image.jpeg)
I know because the PID block formula and the standard formula is not the same。 PID block formula:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/158046/image.png)
standard formula:
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/158048/image.png)
I would like to know how to make the above two simulink procedures to express the same results?
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