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首先提出由于卫星在轨可靠性的要求,耐辐射FPGA成为航天工业应用的趋势。针对此需求,设计出一种基于FPGA实现的傅里叶光谱仪动镜电机控制算法,给出了数字控制器的硬件架构和状态机的实现方法。Modelsim中的代码仿真说明了算法的有效性。经系统运行验证,动镜实际运动位置跟踪期望位置效果好,匀速区速度波动均方根值可达1.4%,为星载傅里叶光谱仪动镜电机数字控制器的实现提供了一种技术途径。
First of all, due to the requirements of satellite orbit reliability, radiation-resistant FPGAs have become the trend of aerospace industry. In response to this demand, a control algorithm based on FPGA for the kinematic mirror motor of Fourier spectrometer was designed. The hardware architecture of the digital controller and the implementation method of the state machine were given. The code simulation in Modelsim shows the validity of the algorithm. After system operation, the real position of the moving mirror can track the expected position, and the root mean square value of the velocity fluctuation can reach 1.4% in the uniform area, which provides a technical approach for the realization of the digital controller of the moving mirror motor of the spaceborne Fourier spectrometer .