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随着航天器负载对功率需求的不断增大,产品设计中对电机驱动电路的可靠性提出了更高的要求,而选用一体化集成电路是电机驱动电路设计的一种成熟方案。文章针对商用现货器件MSK4351的空间应用需求,提出了一种应用快速、可恢复电机驱动电路的单粒子锁定防护设计方法,通过模拟试验验证了该防护电路能够自动探测和迅速解除单粒子锁定现象;并结合设备的在轨工况开展了器件空间应用的单粒子风险分析,结果表明器件的使用风险可接受。目前已应用的电机驱动电路在轨工作稳定,表明该防护设计方法具有一定的工程应用价值。
With the increase of spacecraft load power demand, the reliability of the motor drive circuit in the product design puts forward higher requirements, and the selection of an integrated circuit is a mature scheme of the motor drive circuit design. Aiming at the space application requirement of commercial spot device MSK4351, this paper proposes a single particle locking protection design method based on fast and recoverable motor drive circuit. The simulation results show that the protection circuit can automatically detect and quickly release the single particle locking phenomenon. Combined with the on-track conditions of the device, a single-particle risk analysis of device space application was carried out. The results show that the risk of using the device is acceptable. At present, the applied motor drive circuit is stable on the orbit, indicating that the protection design method has certain engineering application value.