Design and implementation of multi-channel parallel automatic test platform for aerospace power control module

Aiming at the problems of low test efficiency, poor synchronization accuracy and insufficient automation degree of aerospace power control module, this paper designs and implements a highly reliable automation platform that supports more than 32 channels of parallel testing. The platform adopts a layered redundant architecture, with FPGA as the core to realize 5ns synchronous trigger, and combines dynamic delay compensation algorithm and real-time error evaluation model to ensure the testing accuracy of dynamic response. The multi-channel acceleration model is constructed, and the efficiency gain of quantitative test is 28.2 times. Integrated adaptive test engine, supporting automatic script generation, fault self-recovery and one-button report output, realizing closed-loop management of the whole process. Three-mode redundancy and anti-radiation reinforcement are introduced into the hardware of the platform, so that the failure rate of SEE (Single Event Effect) is reduced to 0.12 FIT (Failures In Time), and the error of key parameters in the range of −55 °C~+125 °C is controlled within 0.3% through the temperature drift compensation model. The experimental results show that the test time of the whole machine is shortened from 256 min to 9.3 min, and the acceleration ratio is 27.5 times. Synchronization error ≤3.1 ns, and failure recovery success rate ≥ 98.7%, Verified by 50 MeV proton irradiation, and after TMR (Triple Modular Redundancy) reinforcement, the FPGA has zero flip and the sampling jump of analog-to-digital converter (ADC) is less than 2 times, which meets the requirements of aerospace reliability and space environment adaptability.