Journal of System Simulation ›› 2025, Vol. 37 ›› Issue (2): 404-412.doi: 10.16182/j.issn1004731x.joss.23-1148

• Papers • Previous Articles    

Trajectory Optimization of Robotic Arm Based on Improved Simulated Annealing Genetic Algorithm

Xu Qiang1, Xu Jianlei2, Hu Yanhai1, Chen Haihui2, Zhang Xing2, Xing Zhaohui2   

  1. 1.College of Mechanical Engineering and Mechanics, Ningbo University, Ningbo 315211, China
    2.Ningbo Hanggong Intelligent Equipment Co. , Ltd. , Ningbo 315311, China
  • Received:2023-09-17 Revised:2023-10-23 Online:2025-02-14 Published:2025-02-10
  • Contact: Hu Yanhai

Abstract:

To optimize the working trajectory of the robotic arm, a modified simulated annealing genetic algorithm is proposed. Comprehensively considering the operating requirements and performance characteristics of the robotic arm, the five-order polynomial interpolation method is used to plan a smooth motion trajectory in the joint space. The penalty function method is used to handle the individuals that do not meet the constraint conditions,and the fitness function is recalibrated by the dynamic linear calibration method.An adaptive adjustment mechanism for crossover probability and variation probability is set to modify the genetic algorithm. The cooling idea of the simulated annealing algorithm is introduced, which effectively avoids the algorithm falling into locally optimal. The results show that the optimized trajectory of the improved simulated annealing genetic algorithm effectively shortens the movement time of the robotic arm compared with the traditional genetic algorithm, and then improves the working efficiency of the robotic arm.

Key words: robotic arm, five-degree polynomial interpolation, simulated annealing genetic algorithms, trajectory optimization, penalty function method

CLC Number: