Application of Optimization Theory to the Design of Torque Motors


The problems of automating the process of obtaining a feasible design and optimizing the design of torque motors were studied. Both were formulated as standard optimal design problems with equality and inequality constraints associated with the geometrical and physical characteristics of the motor. The objective function for the feasible design problem was the square of the difference between the specified and the actual torque outputs and for the optimal design problem was either the volume of the device or the required input power. The method of constrained steepest descent with state equations was used as a basis for the development of the computer programs used to solve these problems. The numerical results showed that this method is effective for both the feasible and optimal design problems. Feasible designs were obtained for specified torque outputs, and in the optimal design problems, either the volume or power were reduced substantially from the initial designs without compromising the torque output of the unit. (Author abstract. )

Meeting Name

ASME Design Engineering Technical Conference


Mechanical and Aerospace Engineering

Keywords and Phrases

Constrained Steepest Descent; Optimal Design for Power and Volume; Torque Motors

Document Type

Article - Conference proceedings

Document Version


File Type





© 1985 American Society of Mechanical Engineers (ASME), All rights reserved.

Publication Date

01 Jan 1985

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