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Research Papers

Using Axiomatic Design Theory for Selection of the Optimum Design Solution and Manufacturing Process Plans of a Limited Angle Torque Motor

[+] Author and Article Information
M. Roohnavazfar, M. Houshmand

Department of Industrial Engineering,
Sharif University of Technology,
Tehran 11155, Iran

R. Nasiri-Zarandi

Electrical Machines and Transformers
Research Laboratory,
Department of Electrical Engineering,
Amirkabir University of Technology,
Tehran 15916, Iran
e-mail: Rezanasiri.z@aut.ac.ir

M. Mirsalim

Electrical Machines and Transformers
Research Laboratory,
Department of Electrical Engineering,
Amirkabir University of Technology,
Tehran 15916, Iran
School of Engineering,
St. Mary's University,
San Antonio, TX 78228

1Corresponding author.

Contributed by the Manufacturing Engineering Division of ASME for publication in the JOURNAL OF MANUFACTURING SCIENCE AND ENGINEERING. Manuscript received September 29, 2013; final manuscript received June 30, 2014; published online August 6, 2014. Assoc. Editor: Xiaoping Qian.

J. Manuf. Sci. Eng 136(5), 051009 (Aug 06, 2014) (8 pages) Paper No: MANU-13-1355; doi: 10.1115/1.4027969 History: Received September 29, 2013; Revised June 30, 2014

The brushless dc limited angle torque motor (LATM) has been widely used in areas of aerospace equipments, robot drives, optical scanning systems and any drive systems that require limited motion, ranging from the simple ON-OFF servo valves to the accurate tracking of a reference signal. This paper presents the optimum design procedure of a brushless direct current LATM to satisfy the functional requirements (FRs) and constraints using Independence axiom in axiomatic design (AD) approach. Also, to select the best manufacturing process plan, we consider both cost and thermal performance as two effective criteria, and evaluate available alternatives by computing information content in Information axiom. Finally, finite element method is employed to validate the results obtained by optimizations as well as experimental outcomes extracted from the manufactured prototype of the device.

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Figures

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Fig. 1

The design process as a mapping

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Fig. 2

Design, system, and common ranges and probability density function

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Fig. 3

(a) The configuration of designed LATM and (b) torque-rotor position characteristic of a LATM

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Fig. 4

The alternatives of each PV

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Fig. 5

The numerical approximation system for thermal performance criterion

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Fig. 6

Design, system and common ranges of cost for first manufacturing process plan

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Fig. 7

Design, system ranges and common area of thermal performance criterion for single layer wire

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Fig. 8

FEA of designed LATM (a) without stator excitation and (b) with stator excitation

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Fig. 9

Pictures of the proposed LATM parts: (a) rotor, (b) armature windings, (c) assembled LAT, and (d) experimental setup

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Fig. 10

(a) Torque-angle characteristic and (b) position responses of the LATM to a step input voltage obtained from finite element simulations and test

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