Time-optimal Trajectory Planning of 6-DOF Robot based on Genetic Algorithm

He Jianli; Zhu Longying; Cheng Lei; Yin Jiucheng

doi:10.16578/j.issn.1004.2539.2015.09.010

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Time-optimal Trajectory Planning of 6-DOF Robot based on Genetic Algorithm

更新时间：2022-10-20

- Time-optimal Trajectory Planning of 6-DOF Robot based on Genetic Algorithm
- Vol. 39, Issue 9, Pages: 41-45(2015)
- 作者机构：
  
  1. 常州大学机械工程学院
  2. 盐城工学院汽车工程学院
  3. 西安工业大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2015.09.010
  CLC：
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[1]赫建立,朱龙英,成磊,殷久诚.基于遗传算法的6-DOF机器人最优时间轨迹规划[J].机械传动,2015,39(09):41-45.

He Jianli, Zhu Longying, Cheng Lei, et al. Time-optimal Trajectory Planning of 6-DOF Robot based on Genetic Algorithm. [J]. 39(9):41-45(2015)
[1]赫建立,朱龙英,成磊,殷久诚.基于遗传算法的6-DOF机器人最优时间轨迹规划[J].机械传动,2015,39(09):41-45. DOI： 10.16578/j.issn.1004.2539.2015.09.010.

He Jianli, Zhu Longying, Cheng Lei, et al. Time-optimal Trajectory Planning of 6-DOF Robot based on Genetic Algorithm. [J]. 39(9):41-45(2015) DOI： 10.16578/j.issn.1004.2539.2015.09.010.

摘要

针对机器人在特定工作坏境下工作效率低的情况,提出一种以时间为最优的轨迹规划方法。采用七次B样条曲线完成机器人各关节位置-时间序列的插值,并将运动学约束转化为B样条曲线控制顶点的约束,以机器人关节轨迹运行时间最优为优化指标,采用遗传算法对轨迹曲线执行时间最短寻优,规划出满足运动学约束及力矩平滑的时间最优轨迹。实验结果表明,该规划算法能够明显减小加加速度的累积效应,提高机器人执行轨迹的最优时间。

Abstract

For the problem of the low efficiency of robot under a certain working environment,a trajectory planning method based on optimal time is put forward. Firstly,by using the seven times B spline curve,the interpolation of the robot position time series is completed. Then the kinematic constraints are transformed into the constraints of B spline control vertex. Finally,the time optimal trajectory meeting the kinematics constraints and torque smoothing is obtained by using genetic algorithm,based on the optimization target of robot joint trajectory optimal running time. The experimental results show that the cumulative effect of the planning algorithm could obviously be reduce the jerk and the optimal time of the robot performing trajectory is improved.

关键词

机器人轨迹规划时间最优B样条遗传算法

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