【摘要】 在理论和试验分析磁流变缓冲器(magnetorheological shock absorber, MRSA)阻尼力特性的基础上，建立了考虑二次型阻尼特性的单自由度冲击缓冲系统的动力学方程，定义了磁流变冲击缓冲系统的广义宾汉数(generalized Bingham number, GBN)。以软着陆为控制目标，提出了考虑二次型阻尼特性的磁流变冲击缓冲系统的最优广义宾汉数控制策略。推导了负载的加速度、速度和位移公式，分析了磁流变冲击缓冲系统在不同广义宾汉数的响应。仿真分析和试验测试验证了基于二次型阻尼的最优广义宾汉数控制策略在软着陆控制精度上优于基于线性阻尼的最优宾汉数控制策略。更多还原

【Abstract】 Based on the theoretical and experimental analysis of the damping force characteristics of a magnetorheological shock absorber(MRSA), the dynamic equation of a single degree of freedom shock mitigation system considering quadratic damping was established, and the generalized Bingham number(GBN) was defined. An optimal generalized Bingham number control strategy of magnetorheological shock mitigation system considering quadratic damping was proposed to achieve a soft landing. The acceleration, velocity, and displacement formulas of the payload were deduced, and the dynamic response of the magnetorheological shock mitigation system under different generalized Bingham numbers was analyzed. Simulation analysis and experimental tests verify that the optimal generalized Bingham number control strategy based on quadratic damping is superior to the optimal Bingham number control strategy based on linear damping in terms of soft landing control accuracy.更多还原