机电一体化灵巧舵机控制器设计

Design of High Integration Smart Electro-Mechanical Actuator Controller

随着飞行控制系统多电/全电化的发展,电动伺服系统要求具有结构紧凑、可靠性高等特点。设计了一种一体化、高可靠的电动舵机控制器,主控单元采用DSP+CPLD为核心控制架构,逆变驱动采用集成全桥芯片实现。通过设计过流保护、故障自检等机制增强了系统可靠性。通过对主电源设计两级共模、差模滤波,主控信号数字隔离,提高了系统的抗干扰能力。试验结果表明所设计的电动舵机控制器具有结构紧凑、工作可靠的特点。

With the development of more-/all-electric flight control system, compact structure and high reliability are required for actuation systems. A high-reliable eleetromechanieal actuator controller with integrated structure was intro- duced. In this control system, DSP and CPLD were adopted as the core architecture while integrated full-bridge chip was implemented as the inverter structure. Mechanisms such as over-current protection and internal shutdown for self-check were designed to enhance the system reliability. Two-stage of common mode, differential mode filter of the main power sup- ply and digital isolation of main control signals were designed to improve the anti-interference ability of the system. Experi- mental results show that the designed controller of electro-mechanical actuator has compact structure and reliability.