Design & Implementation of PID Controller Based on FPGA With PWM Modulator
Proportional-Integral-Derivative (PID) controllers are universal control structure and have widely used in Automation systems, they are usually implemented either in hardware using analog components or in software using Computer-based systems. In this paper, the authors focused their works designing on building a multi-channel PID controller by Field Programmable Gate Arrays (FPGAs). To overcome the hardware complexity by the use of more processors for multi channel, they are using single PID controller for multi channel. Multi channel can be implemented by the use of FPGA. When the error is more it can differentiate and produce the constant output, when signal is low when compared to reference signal it can integrate it. FPGA can offer parallel processing, more speed.