In this work software-based PID controller with gain scheduling is implemented to drive a DC motor. LabVIEW

PID controller tool with its associated gain scheduling VI was used. Motor start up interval was experimentally analyzed and

divided into three regions with three related PID gains sets. Gain scheduling selection criterion was based on the dynamic error

absolute value, and it was realized by using case structures. Experiments show that speed overshoot was eliminated and drive

system response became faster. Generally it is possible to auto tune the PID controller to achieve a response with the required

static or dynamic specifications.