A computer controlled positioning system for a turntable

Designing highly accurate control system for a turntable device is a challenging endeavor. This subject paper aims at developing a positioning control system for a turntable unit using LabVIEW application. The general mathematical model of the turntable system is obtained first and then a simulation is carried out in LabVIEW to see how the system behaves with the proposed control system in real-time. A Graphical User Interface (GUI) is developed to set input parameters like angular position in degrees, start and stop control signals; the GUI shows the current position of the turntable device in real time. Output performances are measured on the actual hardware setup. It has been shown that a Proportional Derivative (PD) controller gives promising results in positioning the devise. This system is useful for testing equipment for Electro Magnetic Compatibility (EMC) and Electromagnetic Interference (EMI)