To fulfill the needs for the design of reconfigurable flywheel simulator, a FPGA based solution to flywheel model is provided via the analysis of the numerical solution method to satellite flywheel mathematics model, and the solving process of flywheel model has been finished. The floating-point multiplier, adder and divider are used as the basic calculation module on the computing platform of FPGA. The logic design of the solution is developed with the Verilog HDL. Compared with the solution to the same flywheel model based on fixed-point DSP, the method provided in this paper can get faster and more accurate results. The calculation error is within 0. 13r/min, and each calculation can be finished within 4 μs.%针对具有可重构功能的飞轮模拟器设计需求,通过对卫星飞轮数学模型数值求解方法的分析研究,提出并设计了基于FPGA的飞轮模型解算方法,完成了基于硬件方法的飞轮模型求解过程；在FPGA运算平台下,以浮点制乘法器、加法器和除法器等运算单元为基本运算模块,采用Verilog HDL硬件描述语言实现飞轮模型求解的逻辑设计；与采用定点DSP实现相同卫星飞轮模型求解方法进行比较,结果证明,以FPGA为硬件基础实现飞轮模型的求解能够得到正确的运算结果,并在运算精度和运算时间上有一定的优势,用FPGA实现飞轮模型求解能将误差控制在0.13r/min之内,完成一次迭代所需时间在4μs以内.
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