Free Trial

Safari Books Online is a digital library providing on-demand subscription access to thousands of learning resources.

Share this Page URL
Help

8.1 PID (PROPORTIONAL-INTEGRAL-DERIVATIV... > 8.1 PID (PROPORTIONAL-INTEGRAL-DERIV... - Pg. 308

308 CHAPTER 8 Industrial process controllers Proportional Algorithm Setpoint + - Error + Integral Algorithm Derivative Algorithm Controller + + Controller Output Plant Process Variable Feedback Variable FIGURE 8.1 A schematic of a feedback control loop with a PID controller. the rate of change of the process variable and makes changes to the controller output to accommodate unusual changes. Each of the three control functions is governed by a user-defined parameter, which vary immensely