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This dual-redundant electric landing gear retraction/extension controller receives the landing gear retraction/extension commands from the flight control system. It follows predefined control logic to regulate the brushless DC motor, which drives the electric actuator to complete the retraction and extension of the landing gear. The CPU module is built around the high-speed floating-point digital signal processor TMS320F28335 and a programmable logic device (EPLD), handling tasks such as communication, data processing, A/D conversion, and logic control. The drive module employs the MC33035 brushless DC motor control chip, an IRF540N MOSFET-based three-phase inverter bridge, and the IR2130 MOSFET driver chip. This module receives motor enable, direction control, and speed adjustment signals from the CPU, while also processing signals from Hall sensors to perform electronic commutation, thereby driving the brushless DC motor.

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Design of a Dual-Redundant Electric Landing Gear Retraction/Extension Controller Based on DSP and EPLD

  • 会议论文

  • 发表日期：

    2026年

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  • Qihua Lei,
  • Daqiao Liu

摘要

This dual-redundant electric landing gear retraction/extension controller receives the landing gear retraction/extension commands from the flight control system. It follows predefined control logic to regulate the brushless DC motor, which drives the electric actuator to complete the retraction and extension of the landing gear. The CPU module is built around the high-speed floating-point digital signal processor TMS320F28335 and a programmable logic device (EPLD), handling tasks such as communication, data processing, A/D conversion, and logic control. The drive module employs the MC33035 brushless DC motor control chip, an IRF540N MOSFET-based three-phase inverter bridge, and the IR2130 MOSFET driver chip. This module receives motor enable, direction control, and speed adjustment signals from the CPU, while also processing signals from Hall sensors to perform electronic commutation, thereby driving the brushless DC motor.