基于MEGA8单片机的无传感器无刷直流电机控制系统设计

Design of Control System Based on MEGA8 Single Chip Computer for Sensorless and Brushless DC Motor

针对航模用无传感器无刷直流电机具有体积小、重量轻、效率高及可靠性好等特点,设计开发了专用调速控制系统。首先分析了无传感器无刷直流电机的位置检测方法、PWM调制方式和启动策略等控制原理。接着以MEGA8单片机为核心设计了硬件系统,对几个关键控制电路给出了原理图并进行了详细的阐述。最后还给出了系统控制多种航模用电机的测试结果。

Sensorless and brushless DiG motor used for model aircraft features small size, weightless, efficient and credible. A dedicated speed-adjustment control system of the moor is designed and developed. The position detecting method for sensorless and brushless DC moor, PWM scheme, and startup strategy are analyzed in this paper. The hardware system is developed with MEGA8 single chip computer as the kernel. The schematics of critical control circuits are given and described in detail. The test results of controlling various model aircraft are illustrated.