Class 16 : PID Controller VHDL Program

VHDL Program - Simple PID Controller:

• Kp,Ki,Kd values are determined through your system(process) to be controlled.
• The values can be calculated based on conventional calculation or through MATLAB program using the transfer function of the system or converter with PID controller in closed loop.
• Ref - is actual reference value the system we should achieve @ the output.

• Error is calculated with reference. 
• Proportional, Integral and derivative terms are calculated based on the Digital PID equation.
• Actual control value is calculated P+I+D
• Controllable error range is 0 to 255. Beyond this range controller reach the saturation.

Simulation Results:

PWM Control:

• In the given program, only voltage value taken as reference.

Closed Loop PWM control Simulation:

• In simulation, the pwm pulse widths are getting adjusted when error are beyond acceptable tolerance. check the signal pwm, yout.

If you have any questions please email: miycircuits@gmail.com