修正摆线钟表齿轮的参数化设计

摆线齿轮有很多优点,但是设计加工难度较大,实践中常采用修正摆线齿轮。钟表齿轮是修正摆线的典型应用。文中总结了修正摆线齿轮的特点,整理优化了其几何参数计算公式和计算系数,利用Creo进行修正摆线钟表齿轮全参数化建模,为摆线齿轮设计提供了成套的新方案。

修正摆线端面钟表齿轮的参数化设计

修正摆线端面钟表齿轮与直齿圆柱钟表齿轮啮合可以实现90°垂直轴传动。除了用于钟表机构传动,常用于各种仪器仪表机构。利用Creo进行修正摆线端面钟表齿轮全参数化建模,通过修改参数,即可改变齿轮的模数、齿数,为这种类型齿轮建模提供了新的解决方案,为其数控加工提供了条件。

小模数修正摆线铣刀对加工齿轮齿形的影响

提出小模数修正摆线铣刀的径向跳动和端面跳动对被加工齿轮齿形误差影响的理论计算和分析,并且推导出用小模数齿轮仿形铣削加工时的最少齿数,以换向齿轴为例进行分析仿形铣削加工的误差,对齿轮加工具有实际指导意义。

控制步行机足运动的一种方法工科──修正组合摆线法

基于接近传感器所获得的地面信息，研究腿在转移支撑点时运动的控制问题，提出用“修正组合摆线”作为足的运动轨迹，解决足对不平地面的自适应问题，从而避免了腿的急动和足与地面间的冲击，并且使不平地面的自适应步态成为简单的周期步态。

Dynamic inverse control of feedback linearization in ballistic correction based on nose cone swinging

It is a complicated nonlinear controlling problem to conduct a two-dimensional trajectory correction of rockets.By establishing the aerodynamic correction force mathematical model of rockets on nose cone swinging,the linear control is realized by the dynamic inverse nonlinear controlling theory and the three-time-scale separation method.The control ability and the simulation results are also tested and verified.The results show that the output responses of system track the expected curve well and the error is controlled in a given margin.The maximum correction is about±314 m in the lengthwise direction and±1 212 m in the crosswise direction from the moment of 5 s to the drop-point time when the angle of fire is 55°.Thus,based on the dynamic inverse control of feedback linearization,the trajectory correction capability of nose cone swinging can satisfy the requirements of two-dimensional ballistic correction,and the validity and effectiveness of the method are proved.