摘要
研究磁变阻尼器性能优化问题,分析了负载为磁流变阻尼器的Buck变换器的动态工作过程,为系统实现减振效果,给出了不另加滤波电感的原因。基于三端PWM开关模型法,建立了电流驱动器的小信号平均模型,列出了占空比对输出电压、电感电流的传递函数。根据峰值电流模式下Buck变换器的工作原理,分别分析了电流内环和电压外环,同时设计了斜坡补偿电路和电压补偿网络。根据变换器工作原理,在Saber中建立了峰值电流模式下Buck变换器模型,并进行了仿真研究,仿真结果表明了建模设计方法的正确性性和可行性,这将为磁流变阻尼器电流驱动器设计提供了新思路和方法,也将缩减了电流驱动器电路设计的开发周期。
The operating processes of the Buck converter with Magneto-rheological（MR） damper as its load was analyzed,and the reason for omitting the filter inductor was given.Based on the three-terminal PWM switch model method,the small-signal model of the current driver was built,and then the transfer functions of duty cycle to output voltage and inductor current were listed.Based on the operation principle of Buck converter with peak current mode,the characteristics of current inner loop and voltage loop were analyzed,at the same time,the slope compensation circuit and voltage compensation network were designed.Based on the operation principal of Uc3842,the model of Buck converter with peak current mode was built in Saber,and then the simulation was studied.The result of simulation shows the effectiveness and feasibility of modeling design method.So this modeling design method will provide new approach for designing current driver for MR dampers,and reduce the development cycle of current driver design.
出处
《计算机仿真》
CSCD
北大核心
2011年第3期381-384,共4页
Computer Simulation
基金
"211工程"三期建设(S-09112)
教育部博士点基金(20070611039)
重庆市自然科学基金(2008BB3300)
