Research on Circuit Design for Speed Adjusting Hardware of Brushless DC Motor Based on the Two-Dimensional Fuzzy Controller

The essay first establishes the general design for intelligent rotary speed system of the brushless DC motors, then based on the general design scheme, two-dimensional fuzzy controller, adaptive current adjustor and mainly used hardware circuits are designed. The mainly used hardware circuit design includes the circuit design of current detecting circuit, voltage detecting circuit, high-speed optocoupler, motor driver circuit, zero-crossing comparator circuit, etc. At last the designed controller and hardware circuits are tested to achieve optimum effects for rotary speed control through validation of experimental devices.