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首页> 外文会议>International Conference on Mechanical Engineering and Mechanics vol.2; 20051026-28; Nanjing(CN) >Study on the Effect of Generalized Coupled Stiffness in the Electro-hydraulic Load Simulator
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Study on the Effect of Generalized Coupled Stiffness in the Electro-hydraulic Load Simulator

机译：电液载荷模拟器中广义耦合刚度的影响研究

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摘要

The Electro-hydraulic load simulator (EHLS) is used to replicate aerodynamic hinge moment in real-time hardware-in-the-loop missile simulations. As a passive kind of torque control system, the movements of loaded system resulted in so called surplus torque to loading system. The surplus torque problem is almost related to the performances of EHLS. Generally, the contributions of surplus torque are negative. But, there is no quantitative method to design a suitable coupled stiffness for "eliminating" surplus torque in electro-hydraulic load simulator (EHLS) at present. In our research works, the ultimate purpose is possible to improve the disturbed closed-loop bandwidth. This paper draws attention to a quantitative method in generalized coupled stiffness design which not treated surplus torque as disturbance, but as "compensation". Augment of the generalized coupled stiffness has a "two-direction" action characteristic. There must be an optimal generalized coupled stiffness which makes the "two-direction" action reach at the optimal state independently. We gave an equation to calculate this stiffness by shaping the curve of disturbed system in frequency domain and made "compensating" action of surplus torque reached at an optimal state under the precondition of linear load gradient. The simulation results show that the EHLS system "eliminates" surplus torque validly and ensures the system performances use this optimal generalized coupled stiffness.
机译：电液载荷模拟器（EHLS）用于在实时硬件在环导弹仿真中复制气动铰链力矩。作为一种被动的转矩控制系统，负载系统的运动会导致负载系统产生多余的转矩。剩余扭矩问题几乎与EHLS的性能有关。通常，剩余转矩的贡献为负。但是，目前尚没有定量方法来设计合适的耦合刚度来“消除”电动液压负载模拟器（EHLS）中的剩余扭矩。在我们的研究工作中，最终目的是改善受干扰的闭环带宽。本文提请人们注意广义耦合刚度设计中的一种定量方法，该方法不将多余的扭矩视为干扰，而视为“补偿”。广义耦合刚度的增强具有“双向”作用特性。必须有一个最佳的广义耦合刚度，它可以使“双向”作用独立地达到最佳状态。我们给出了一个方程，通过在频域上对受扰系统的曲线进行整形来计算该刚度，并在线性负载梯度的前提下，使处于最佳状态的剩余转矩“补偿”作用。仿真结果表明，EHLS系统有效地“消除”了多余的扭矩，并确保使用最佳的广义耦合刚度来确保系统性能。

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