Journal of Applied Sciences ›› 2023, Vol. 41 ›› Issue (4): 718-726.doi: 10.3969/j.issn.0255-8297.2023.04.015

• Control and System • Previous Articles    

Control Method of SMA Wire Constant Output Force Based on Neural Network PID

WANG Ben, Lü Peilun, WANG Yangwei   

  1. School of Mechanical and Electrical Engineering, Northeast Forestry University, Harbin 150040, Heilongjiang, China
  • Received:2021-08-30 Published:2023-08-02

Abstract: To realize the constant output force control of shape memory alloys (SMA) wire, a constant output force control method based on particle swarm optimization neural network proportion integral differential (PID) is proposed. This paper examines the relationship between SMA wire self-perceived resistance value, output force, and temperature, with SMA wire resistance used as system feedback. Particle swarm algorithm is then applied to optimize the parameters of PID, achieving accurate control of constant output force of SMA wire, thereby reducing overshoot and improving response speed compared to traditional PID control.

Key words: shape memory alloy, particle swarm optimization, neural network optimization, PID constant force control

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