基于FPGA的双余度旋变无刷电机控制系统

Control System of Dual Redundant Rotary Brushless Motor Based on FPGA

为提高无人直升机整机系统恶劣环境工作的可靠性和安全性,提出一种基于FPGA的双余度旋变无刷电机控制系统的设计方法,分别对旋转变压器的工作原理,激磁解调接口电路,FPGA信号采集,旋变故障检测、判断和切换进行说明,对旋变故障检测方法进行分析,给出双余度旋变切换过程稳定结论。仿真结果证明:该系统工作稳定、可靠,提高了舵系统在恶劣环境中正常工作的能力。

For improving reliability and security of unmanned helicopter system under harsh environment,this paper proposes a dual redundant rotary brushless motor based on FPGA,and separately introduce the operating principle of rotary transformer,demodulation interface circuit of excitation,signal acquisition of FPGA,and fault detection,diagnosis and switching of rotary transformer.Analyze the rotary fault detection method,and put forward the calculation that the dual redundant rotary transformation process is stable.Simulation results show that the system work is stable and reliable and it improves normal working performance when the rudder control system was under harsh environments.