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November 17, 2024Smart Materials and Structures

Performance analysis of position sensorless control of antagonistic shape memory alloy actuators

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Authors

FBFengqiang BaiXZXiangjun ZhangDXDianguo Xu

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Overview

Randomized trial evaluates position accuracy in shape memory alloy actuators, suggesting improved control strategies.

Key Points

  • This research aims to enhance sensorless position control of antagonistic shape memory alloy actuators (ASMAA) and analyze its performance.
  • Developed a self-sensing model framework based on the constitutive model of ASMAA.
  • Established an experimental platform to test SMA wires under various pretension conditions.
  • Designed a compound control strategy utilizing the Duhem model and particle swarm optimization for PID control.
  • The compound controller improved position tracking accuracy significantly compared to the standalone PID controller (exact metrics not specified).
  • The antagonistic configuration mitigated hysteresis and improved linearity during experiments.
  • A polynomial fitting established a reliable resistance-displacement relationship with minimal residuals.

Cite This Study

Bai et al. (2024) studied this question.

synapsesocial.com/papers/6a6b0332425eb3a8efb386d5https://doi.org/10.1088/1361-665x/ad939a
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