Abstract
Servo motor education will requires some experiments to catch the feedback concept. So, we developed a low cost experimental setup incorporated AC servo motor for teaching the servo control technique. LinuxCNC is an open source working on Ubuntu 10.04, and allows us to develop the digital PID, real-time control by using a personal computer. It usually controls with step and direction signals through a standard parallel port. In order to transfer the analog signals of the velocity data from PC to the servo drivers we prepared two types signal connecting boards. One uses analog switching devices, the other uses an arduino microcomputer. Developed experimental setup is easy to use and students can experience PID control and an advanced motion control by one's perception. In addition, velocity, position and encoder feedback signals can be monitored directly by an oscilloscope without a damping, or with a small damping.
