PIC PID Micro-Controller

This is a PIC based system that implemented a closed-loop PID controller for position and speed control of two DC motors. In addition, the control loop could be adjusted to induce arcs. The system was designed as a peripheral for another processor so it also had an SPI command interface that allowed it to be communicated with on a high level while it controlled the motors on a low level. The peripheral had a serial console that allowed you to tune, test, and drive the robot. In order to give the robot all of these features, we designed a special sub-processor that was devoted to the low-level control of the two primary motors. We implemented this system on a Microchip PIC18F252. This processor was housed on the same board as the motor driver which took control signals from this controller and used them to actually drive the motors.

Source: shawnlankton

motorboard

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