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为研究脉冲激光推力器多脉冲工作模式下的推力/冲量力学特点,分析了扭摆系统在多脉冲作用力作用下的响应特点,提出了多脉冲作用力的平均推力和冲量的测量方法,并通过仿真分析了多脉冲作用力重频、非标准周期多脉冲力对测量的影响。仿真结果表明:当脉冲力的重频是扭摆固有频率的10倍以上时,可以利用稳态转角均值计算平均推力;在扭摆周期远大于多脉冲工作时间的4倍时,可以利用转角的最大峰值以及达到最大峰值前的转角测量值计算冲量;当脉冲作用力为非标准周期性作用力时,推力/冲量测量方法仍然有效。
In order to study the thrust / impulse mechanics characteristics of pulsed laser thruster in multi-pulse mode, the response characteristics of the torsion system under multi-pulse force are analyzed. The method of measuring the average thrust and impulse of multi-pulse force is proposed. Simulation analysis of the multi-pulse force repetition frequency, non-standard periodic multi-pulse force on the measurement. The simulation results show that when the pulse repetition frequency is more than 10 times the torsional natural frequency, the average thrust can be calculated by using the steady-state rotation angle average value. When the wobbling period is much larger than 4 times of the multi-pulse working time, the maximum peak value And the maximum peak before the peak angle measurement to calculate the impulse; when the pulse force is a non-standard periodic force, thrust / impulse measurement method is still valid.