Scholarlink

<p>Modern aircraft require high-power-density, lightweight electromechanical actuators (EMAs). Integrated EMAs (IEMAs) combine servo motors and planetary roller screws for compact designs but face thermal challenges due to heat generation. This study analyzes IEMA thermal behavior using finite element modeling (FEM) and lumped parameter thermal networks (LPTN). Heat sources—winding, core, and friction losses—are modeled analytically. FEM provides detailed temperature distributions, while LPTN enables efficient parametric studies. Results show consistent predictions between methods, with localized overheating in the roller screw and rotor sleeve, highlighting the need for improved axial cooling. The work advances thermal management strategies for high-performance aerospace actuators.</p>

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Thermal behavior analysis of a novel integrated electromechanical actuator

  • 期刊论文

  • 发表日期：

    2026年1月12日

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  • Linjie Li,
  • Xuejiao Wang

摘要

Modern aircraft require high-power-density, lightweight electromechanical actuators (EMAs). Integrated EMAs (IEMAs) combine servo motors and planetary roller screws for compact designs but face thermal challenges due to heat generation. This study analyzes IEMA thermal behavior using finite element modeling (FEM) and lumped parameter thermal networks (LPTN). Heat sources—winding, core, and friction losses—are modeled analytically. FEM provides detailed temperature distributions, while LPTN enables efficient parametric studies. Results show consistent predictions between methods, with localized overheating in the roller screw and rotor sleeve, highlighting the need for improved axial cooling. The work advances thermal management strategies for high-performance aerospace actuators.