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Algorithm for Implementing PID Control for Servo Systems on Microprocessor

IP.com Disclosure Number: IPCOM000051279D
Original Publication Date: 1981-Jan-01
Included in the Prior Art Database: 2005-Feb-10

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Polk, DR [+details]


A high performance servo system is provided which uses a combination of proportional, integral, and derivative control, commonly referred to as PID control. The PID control function is the sum of three terms, one which is proportional to velocity error, one which is proportional to the integral of velocity error, and one which is proportional to the derivative of velocity error. Fast velocity response to changes in input commands and accurate steady-state velocity tracking are achieved with this type of control. The system is shown in the figure.