摆动导杆机构键合图建模新方法

A Bond Graph Modeling Method of Swing guide-bar Mechanism based on the Bond Graph Method

研究摆动导杆机构的键合图建模问题,提出一种虚位移原理与键合图相结合的摆动导杆机构建模新方法。该方法根据杆件的几何关系,确定单个杆件质心的运动规律与旋转副或滑动副的关系,运用多通口转换器建立包含旋转副或滑动副的杆件键合图模型,以杆件的旋转副或滑动副为链接点将各个杆件的键合图模型进行拼装,得到摆动导杆机构键合图模型,仿真计算验证了方法的正确性。该方法简化了现有的键合图建模过程,为复杂平面连杆机构键合图建模提供一种新方法。

The bond graph modeling of swing guide-bar mechanism is researched.An integrated modeling method based on the combination of virtual work principle and bond graph is put forward.Firstly,the centroid movement rule of each bar and the bond graph model of the turning or moving pair are researched by the principle of virtual work and the geometry relation between each bar.Then the bond graph modeling of the system is established by making up the bond graph models of each bar.The correctness of this method is verified by simulation calculation.As a consequence,modeling process is simplified using this method,and the difficulty on bond graph modeling for complex planer linkage is released.Thus a considerable referential value has to be notified for bond graph modeling in the area of mechanism.