大功率磁流变液传动系统动力传递失效机理及其控制方法研究

项目名称： 大功率磁流变液传动系统动力传递失效机理及其控制方法研究

项目编号： No.51475454

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 刘新华

作者单位： 中国矿业大学

项目金额： 86万元

中文摘要： 本项目以大功率磁流变液传动系统为对象，研究其动力传递失效机理及其控制方法。建立磁流变液的两相格子Boltzmann模型，设计基于双重网格Lattice Boltzmann方法的链化过程模拟算法，揭示大体积分数磁流变液的磁化机理；探求温度变化与界面变形对大功率磁流变液传动系统动力传递失效的影响规律，并从磁性颗粒包覆剂种类、粒径大小、体积分数、粒径混合比例、载液等方面优化磁流变液制备工艺；建立挤压作用下附着颗粒链的力学模型，对颗粒群微观结构进行压缩弹性模量分析，定量获得磁流变液传动系统的挤压力学特性；综合运用偶极子模型、系统辨识方法、零相差跟踪、自适应控制等理论，建立大功率磁流变液传动系统的非线性耦合模型，设计基于逆模型补偿控制和自适应控制相结合的控制策略。本项目的研究对于揭示大功率磁流变液传动系统动力传递失效机理具有重要的理论意义，并为大功率磁流变液传动装置的优化设计提供新的理论和方法。

中文关键词： 大功率磁流变液传动；失效机理；MRF制备工艺；挤压力学特性；耦合控制

英文摘要： This project intends to research the force transfer failure mechanism and control method for large power magnetorheological fluids transmission system. The two-phase Lattice Boltzmann model for MRF is presented and a simulation algorithm for chain-formation process based on Lattice Boltzmann with double meshes is designed, and the chain-formation mechanism of large volume fraction magnetorheological fluids with the magnetic force is put forward. The influence rules which the temperature and deformation act on the system are presented, and the preparation process of MRF for large power magnetorheological fluids transmission system is improved through five aspects such as coating material, particle size, volume fraction, proportion of two different size particles and carrier liquid. The force model for attached particle chain under extrusion is proposed and the compressive modulus of particles microstructure is analyzed, and the mechanical characteristics of MRF under extrusion mode is obtained quantitatively. A nonlinear coupling model is set up based on dipole model, system identification approach, zero phase error tracking and adaptive control theory, and the control strategy is designed through integration of the offset of inverse model and adaptive control theory. This project has important theoretical significance for the research on force transfer failure mechanism of large power magnetorheological fluids transmission system, and provides new theory and approach for optimal design of large power magnetorheological fluids transmission.

英文关键词： Large Power Magnetorheological Fluids Transmission;Failure Mechanism;MRF Preparation Process;Mechanical Characteristics under Extrusion Mode;Coupling Control