摘要：针对某小型姿控固体火箭发动机瞬态推力的测量,在分析其瞬态推力测量原理的基础上,指出了瞬态推力测量和稳态推力测量的差异。根据姿控发动机瞬态推力的测量特点,提出了一种动态数字滤波补偿法,采用辨识建模、动态补偿和计算机仿真相结合的手段,建立测量系统的动态数学模型,并根据瞬态推力测量的要求,设计了系统模型的动态补偿数字滤波器,从而改善了系统的动态响应特性,达到姿控发动机瞬态推力测量的目的。采用此方法对某小型姿控固体火箭发动机瞬态推力进行了测量,测量处理结果表明:动态数字滤波补偿法应用于发动机瞬态推力的测量是行之有效的。

摘要：在姿控发动机的瞬态推力测量中,推力测量系统的动态特性是影响推力准确测量的一个至关重要的因素。根据姿控发动机推力测量的特点,针对某型号姿控发动机设计了专用的试车台架,采用了动态标定、动态补偿和计算机仿真有机结合的方法,对推力测量系统动态特性的改善进行了研究。仿真结果表明,此方法在改善推力测量系统动态性能方面是行之有效的,可将其进一步推广到其它动态测量系统。

摘要：In order to measure the instantaneous thrust of a certain attitude-control solid rocket motor, based on the analysis of the measurement principles, the difference between the instantaneous thrust and steady thrust measurements is pointed out. According to the measurement characteristics, a dynamic digital filter compensation method is presented. Combined the identification-modeling, dynamic compensation and simulation, the system's dynamic mathematic model is established. And then, a compensation digital filter is also designed. Thus, the dynamic response of the system is improved and the instantaneous thrust measurement can be implemented. The measurement results for the rocket motor show that the digital filter compensation is effective in the instantaneous thrust measurement.