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首页> 外文会议>Biennial Conference on Engineering Systems Design and Analysis >PERFORMANCE ENHANCEMENT OF A FRICTION DAMPER SYSTEM USING BOND GRAPHS
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PERFORMANCE ENHANCEMENT OF A FRICTION DAMPER SYSTEM USING BOND GRAPHS

机译：使用键合图的摩擦阻尼系统的性能提高

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This paper describes a study of the performance of a servo-driven dry-friction damper employed in a vehicle suspension application. The damper is force-controlled via an electrohydraulic pressure control system. Previous experimental work showed that the theoretically predicted system performance does not reflect actual system behaviour because of both the residual back-pressure which produces an undesired constant-amplitude damping force and reduced hydraulic system bandwidth due to presence of free air within the hydraulic fluid. Possible solutions are proposed and performance assessed against a simulated system with dynamic performance purposely worsened. The first issue can be addressed by spring-preloading the friction damper so as to compensate the constant force caused by the residual back-pressure. The second issue can be tackled by closing a local pressure control loop around the control valve. The friction damper is controlled by a variable structure scheme that performs spring force compensation tracking. Bond graphs are employed as a tool for modelling and designing the control system.
机译：本文介绍了在车辆悬架应用中使用的伺服驱动的干摩擦阻尼器的性能的研究。通过电动液压控制系统力控制阻尼器。以前的实验工作表明，理论上预测的系统性能不反映实际的系统行为，因为由于存在不希望的恒压阻尼力和由于液压流体内的空气的存在而产生不希望的恒压阻尼力和降低的液压系统带宽。提出了可能的解决方案，并根据具有动态性能的模拟系统评估的性能。可以通过弹簧预加载摩擦阻尼器来解决第一问题，以补偿由残余背压引起的恒定力。通过关闭控制阀周围的局部压力控制环，可以解决第二个问题。摩擦阻尼器由可变结构方案控制，该结构方案执行弹簧力补偿跟踪。键合图被用作建模和设计控制系统的工具。

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