Controlling a Servo using PID control.

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Robert 2013-4-15

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https://ww2.mathworks.cn/matlabcentral/answers/72157-controlling-a-servo-using-pid-control

评论： Steve 2014-11-9

Hi Guys,

Wonder if you could help me.

I am learning about Simulink and the Arduino. I am trying to use PID feedback control with PWM but I'm not sure that makes sense due to the results.

I have a continuous servo that reads a value from 0 to 180 and a pot as an analog in and they work fine together and it is calibrated nicely.

Now I am trying to improve the response time mimicking an experiment that I did at Uni to control a servo using PID control.

So I have my input value going into a sum through a PID controller to the servo with the input signal going to a scope. From the servo read, the signal goes into the sum as a minus, and that signal also goes to the scope.

But trying to tune the PID controller, the signal just goes from high to low as PWM of 5Hz.

I am clearly missing something here.

Sample rate is set to 0.01

P = 1 I = 0 D = 0

Let me know what other info I need to give. D

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Gaurav Pipersaniya 2013-5-27

can you tell me how can i do this project. actually i have to do project on pid controller similar to yours using simulink so if u can help in detail?