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PID control code
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C language implementation of cascade PID algorithm. PID control is the most common and widely used automatic feedback system. The PID controller controls the controlled object by P, proportional, I, integral and D, derivative. The integral or differential here is the integral or differential of deviation to time. Stability (P and I reduce the stability of the system, D improve the stability of the system): in the equilibrium state, the controlled quantity can reach a certain stable state after a period of time when the system is disturbed; accuracy (P and I improve the steady-state accuracy, D has no effect): when the system is in the steady-state, its steady-state error (steady-state & nbsp; Error); rapidity (P and D improve the response speed, I reduce the response speed): system requirements for dynamic response. It is generally measured by the length of transition time.
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