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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.1: Advanced Energy Systems; Advanced Heat Transfer in Engineering Systems; ... >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：使用粘合图增强摩擦阻尼器系统的性能

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摘要

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：本文描述了一种用于车辆悬架应用中的伺服驱动干摩擦阻尼器性能的研究。阻尼器通过电动液压控制系统进行力控制。先前的实验工作表明，理论上预测的系统性能不能反映实际的系统行为，因为残余背压会产生不希望的恒定振幅阻尼力，并且由于液压流体中存在自由空气而导致液压系统带宽减小。提出了可能的解决方案，并针对模拟系统评估了性能，而故意降低了动态性能。第一个问题可以通过在弹簧上预装摩擦阻尼器来解决，以补偿由残余背压引起的恒定力。第二个问题可以通过关闭控制阀周围的局部压力控制回路来解决。摩擦阻尼器由可变结构方案控制，该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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