半主动悬置系统的传递力动态预估与实时解耦的研究

项目名称： 半主动悬置系统的传递力动态预估与实时解耦的研究

项目编号： No.51505115

项目类型： 青年科学基金项目

立项/批准年度： 2016

项目学科： 机械、仪表工业

项目作者： 胡金芳

作者单位： 合肥工业大学

项目金额： 20万元

中文摘要： 本项目主要是为了降低半主动悬置系统的成本并且获得良好的隔振效果，重点研究基于模型的传递力预估以实现减少传感器的使用，以及如何在主动控制时实时考虑系统的振动解耦度。首先，进行半主动悬置的设计，系统动特性近似线性建模和关键参数识别。其次，基于将半主动悬置看作为力和位移传感器的理念，根据悬置上液室压强及近似线性的传递函数，对悬置系统的传递力、力矩和位移在频域和时域内进行动态估计。最后，考虑半主动悬置主动控制实施时对系统振动解耦的影响，基于系统的模态分析、垂向和横摇方向传递力（矩）的动态估计，实时评价系统的振动解耦度和隔振效果，控制系统实时改变系统的动特性，实现传递力（矩）和振动解耦的多目标控制的协调，从而在宽频范围内获得良好的隔振性能。本项目拟采用动特性建模、基于试验数据的近似线性模型参数估计、仿真计算、样件开发、试验验证的开发手段，为半主动悬置系统降本和隔振控制提供理论依据和技术支持。

中文关键词： 半主动悬置系统；；传递力预估；；实时解耦；振动控制

英文摘要： To lower the cost and achieve better isolation of the semi-active mounting system, the transmitted force estimation based on dynamic model for reducing the sensors is studied, and the real-time control strategy with considering decoupling index is developed. Firstly, the dynamic characteristics of the designed semi-active mount are described by a quasi-linear model, and the parameters are derived from the test. Then, based on the concept that semi-active mount is the force or displacement sensor, the transmitted forces, torques and displacements are estimated by using the pressure of upper fluid chamber and quasi-linear transfer function in frequency and time domain. Finally, considering the effect between the decoupling and the active control, based on the modal analysis and the estimation of transmitted forces in roll and bounce, the decoupling index and isolation effect are real-time evaluated. To achieve better isolation in broad band, the control orders should be real-time determined to suit the requirement of the coordination of the vibration control and decoupling index. The dynamic modeling, parameters estimation, software simulation, prototype development and the experiment would be studied. This project is expected to provide the theory and technical support for the cost decrease and vibration control of the powertrain mounting system.

英文关键词： semi-active mounting system;transmitted force estimation;real-time decoupling ;vibration control