基于Modelica的磁流变制动器多领域建模与仿真

Multi-domain modeling and simulation for magnetorheological brake based on Modelica

针对磁流变制动器的多领域耦合建模问题,对磁流变制动器的工作原理和多领域模型的构建进行了研究。基于Modelica/MWorks平台,采用多领域统一建模方法,建立了磁流变制动器的多领域统一模型。分析了结构参数、磁路参数、材料特性、工作间隙、转轴转速和励磁电流等因素对制动性能的影响,并对磁流变制动器在不同参数下的制动性能进行了仿真;同时,设计并制造了一款用于微型汽车的单盘式磁流变制动器,搭建了制动器性能测试平台,将实验结果与仿真结果进行了比较,两者基本吻合。研究结果表明,用多领域统一建模的方法构建的磁流变制动器模型具有较高的精确性,该建模仿真方法为磁流变制动器后续的优化设计及产品开发奠定了基础,对其他磁流变装置的研究开发也具有借鉴作用。

Aiming at multi-domain coupling modeling of Magnetorheological brake （MRB）, the operational principle and the multi-domain modeling of MRB were studied. Based on Modelica/MWorks platform and using muhi-domain unified modeling method, a muhi-domain unified MRB model was established. The influence on braking performance by structural parameters, magnetic circuit parameters, material characteristics, working gap, rotation speed and field current was analyzed, the braking performance of MRB was simulated under different parameters; Meanwhile, a single-disc MRB for mini-cars was designed and manufactured, a braking performance test platform was built. The experimental results are basically consistent with the simulation results. The results indicate that MRB model by multi-domain unified model- ing method has a relatively high accuracy, the modeling and simulation method lays the foundation for further optimization design and product development of MRB, and makes reference to research and development of other magnetorheological device.