Design and Implementation of Micro-Stepping Drive of Stepper Motor for Solar Array Drive Assembly using FPGA

This paper describes the design of a control system for a micro step driving method of stepper motor using VHDL. The control system so designed is employed in the application of Solar Array Drive Assembly (SADA) in terrestrial solar plant and in satellites. This solution uses a digital controller with Sine-Cosine variation to control the currents of the two phases of the motor, making them change according to the orthogonal sinusoidal scalar form curve, fulfilling the micro step driving of stepper motor and improving its position control precision by hundreds of times. At the same time, this driving method solves problems such as large noise, resonance and non-even step angle and so on. The work presented in this paper implements the control system in Xilinx ISE.