摘要
应用Bingham模型建立磁流变离合器传递转矩与输出转速的计算模型,分析离合器的负载特性,结果表明:一定范围内可通过减小离合器输出转速增大输出转矩,减小工作间隙和增大传动圆盘内径都可增加离合器开环传动系统刚度。离合器所需控制比与最大调速比为平方关系,减小离合器传动圆盘内径及增大传动间隙、选择多间隙结构可提高离合器的控制比,增大调速范围。功率损失分析表明,拖动风扇调速时的滑差功率损失在传动比为3∶2时出现极值,因此实践中可通过控制传动比来控制滑差功率损失从而控制离合器的温升。
Based on Bingham model, the expressions of the torque and the output rotational speed within the magnetorheological fan clutch was derived. It is shown that the output torque increases as the output speed decreases, and the stiffness of open-loop clutch drive system increases as the working gap decreases or the radius of drive plate increases. The torque control ratio of clutch has a square relation with the speed regulation ratio. Thecontrol ratio increases as the radius of drive plate decreases, the working gap increases, or the gap number increases. It is derived that the maximum slip power loss is occurred when the transmission ratio is 3： 2. It provides a method of controlling slip power loss by managing the controllable drive ratio to avoide high temperature on clutch.
出处
《机床与液压》
北大核心
2011年第17期116-118,76,共4页
Machine Tool & Hydraulics
基金
天津市教委科技发展基金资助项目(20070913)
关键词
磁流变液
风扇离合器
调速特性
Magnetorheological fluid
Fan clutch
Speed regulation characteristic
