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首页> 外文会议>Conference on passive damping and isolation >Three different methods for the derivation of control laws for multi-degree-of-freedom systems containing electrorheological dampers
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Three different methods for the derivation of control laws for multi-degree-of-freedom systems containing electrorheological dampers

机译：三种不同的方法，用于控制含有电流阻尼器的多程度自由度系统的控制定律

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The minimization of unwanted vibrations is an important technical challenge. Purely passive systems often do not achieve the postulated results. Purely active systems are costly because of the required additional power and the necessary maintenance. Currently it seems that semi-active methods of vibration reduction are as competitive as any other methods. Semi-active damping control can be realized with electro- or magnetorheological fluids. These change their characteristic in the presence of an electric or magnetic field or by bypasses combined with magnetic valves. The methods known in linear control theory cannot be used for the controller design because no explicit external forces can be generated whenever they are needed. Forces can only be generated when relative velocities between the endpoints of the damper exist. It is important to investigate control methods which will reduce vibration with controlled damping. In this paper three different methods for establishing control laws are presented. The first is based on the consideration of power flow in the system. It is discussed in detail. The second method uses Bellmans dynamic optimization. The last transforms a multi degree of freedom system by modal analysis into uncoupled single degree of freedom systems. The control methods developed by these three methods all lead to the same vibration reduction strategy. The control laws are verified with simulation results.
机译：最小化不需要的振动是一个重要的技术挑战。纯粹被动系统通常不会达到假设结果。由于所需的额外电源和必要的维护，纯粹的主动系统昂贵。目前似乎振动减少的半主动方法与任何其他方法一样竞争。半主动阻尼控制可以用电磁体流体实现。这些在电动或磁场的存在下或通过与磁性阀组合的绕过来改变它们的特征。线性控制理论中已知的方法不能用于控制器设计，因为无论只需每当需要时不会产生显式外力。只有当存在阻尼器的端点之间的相对速度时，才能产生力。研究控制方法是对控制阻尼减少振动的控制方法。本文提出了三种不同的建立控制法律方法。首先是基于系统中电力流的考虑。它是详细讨论的。第二种方法使用Bellmans动态优化。最后将模态分析转换为解耦单一自由度系统的多程度的自由度系统。这三种方法开发的控制方法都导致相同的减振策略。通过仿真结果验证控制法。

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