摘要
对比分析了多项式曲线、正弦函数及NURBS曲线等3种电子凸轮驱动多杠杆机构的轨迹规划方案,结果表明:相对于多项式曲线及正弦函数轨迹规划方案,NURBS曲线轨迹具有更小的速度和加速度特征值,更能满足电子凸轮运动工况。基于ADAMS构建虚拟样机模型进行仿真分析,仿真结果表明:基于NURBS曲线的运动轨迹误差在允许范围内,满足执行速度和加速度连续性需求,在高速条件下,满足平稳可靠性需求。
The trajectory planning scheme of three kinds of electronic cam driving multi-lever mechanism is analyzed, namely, polynomial curve, sine function and NURBS curve trajectory. The results show that the NURBS curve trajectory has a smaller velocity and acceleration eigen value than the polynomial curve and sine function trajectory planning scheme, which satisfies the electronic cam motion condition. The simulation results show that the motion trajectory error based on NURBS curve satisfies the requirements of execution speed and acceleration continuity, and satisfies the requirement of smooth reliability under the permission of high speed, and the simulation results show that the motion trajectory error based on NURBS curve is within the allowable range.
出处
《小型内燃机与车辆技术》
2017年第5期47-51,共5页
Small Internal Combustion Engine and Vehicle Technique
