Optimization of design parameters of a limited angle torque motor using analytical hierarchy process and axiomatic design theory

Roohnavazfar, M.; Houshmand, Mahmoud; Zarandi, Reza Nasiri; Mirsalim, Mojtaba

doi:10.1080/21693277.2014.904762

Cited by 7 publications

(3 citation statements)

References 31 publications

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“…However, all LATMs have a common characteristic, that is, the output torque is almost constant in a particular angle range, and this range is called the constant torque region [8][9][10]. Because of its excellent performance, the constant torque region is usually used as the operational range of the LATM [11,12]. Because of requirements for lighter and smaller equipment in the aerospace field, improving the power density of LATMs is a primary optimization objective [13].…”

Section: Introductionmentioning

confidence: 99%

Operational range extension method for limited‐angle torque motors with irregular slot numbers

Wang

et al. 2021

IET Electric Power Appl

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A modified model of a limited-angle torque motor (LATM) with irregular slot numbers is proposed for developing an operational range extension method for LATMs. The modified model is derived by considering the effects of the asymmetrical winding structure and magnetic flux leakage, which are validated by finite element analysis and experimental measurements. Based on the modified model, accuracy and time consumption of the simulation can be improved. For the operational range extension method, extended angle range selection theory and constraint conditions are proposed, and the relationship between the sinusoidal tracking characteristic and leading parameters is established by theoretical analysis. A simulation and a prototype machine experiment on an LATM using the new method are carried out. The results show that the proposed operational range extension method can reduce the weight and volume of the LATM without changing sinusoidal tracking characteristics, which proves the feasibility of applying the new method in the oscillating scan system to realize lightness and miniaturisation of the system.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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Section: Introductionmentioning

confidence: 99%

Operational range extension method for limited‐angle torque motors with irregular slot numbers

Wang

et al. 2021

IET Electric Power Appl

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“…For this type, cogging torque and partial magnetic saturation result in a non-uniform torque profile [5]. Toroidally wound stator LATM with PM rotor does not have the cogging torque problem due to the constant reluctance path and relatively large air-gap [2], so this configuration has wide applications for its advantages of accurate positioning capability, low cogging torque, and high reliability [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Analytical Study, Design and Optimization of Radial-Flux PM Limited-Angle Torque Motors

Yazdanpanah

2020

Scientia Iranica

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This paper presents an analytical study of the radial-flux slotless limited-angle torque motors. The modelling is based on the magnetic equivalent circuit of the actuators and uses the electromagnetic equations to calculate the air-gap flux as well as the produced torque. This model is then used for designing the actuators both in outer-rotor and innerrotor structures, considering the design constraints and desired characteristics. As the objectives in design stage usually conflict with each other, an intelligent multi-objective optimization algorithm is required to design the best fit actuators. Analytical and simulation results are presented and compared to show the accuracy of the model and verify the design equations as well as the design approach. As this type of actuators is a key element in industrial control, the contributions of this paper are focused on new analytical field solution based on magnetic equivalent circuit, design and optimization approach for radial-flux structure and introducing a general procedure that could be extended to similar structures and actuators.

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“…It is therefore a multi-objective optimization design problem. In [8,9], a simple EMCM model of a LASM is developed and hierarchy process (AHP) or axiomatic design (AD) methods are used to simplify the design procedure. But only a two pole design is studied, and the AHP or AD algorithm are known to be suitable for comparing existing solutions rather than for preliminary design.…”

Section: Introductionmentioning

confidence: 99%

Preliminary Design and Optimization of Toroidally Wound Limited Angle Servo Motor Based on a Generalized Magnetic Circuit Model

Zhao

et al. 2016

IEEE Trans. Magn.

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This paper proposes a new generalized equivalent magnetic circuit model for the preliminary design of a toroidally-wound limited angle servo motor (LASM). In the model, the magnetic networks are formulated as a function of the pole number and geometric dimensions. Nonlinear saturation effect of the ferromagnetic material is also taken into consideration. A multi-objective optimization function involving the torque requirement, the mass, the time constant, and magnetic saturations of ferromagnetic material is introduced. Based on the proposed model, six design cases with different objectives have been carried by the particle swarm optimization (PSO) method. The comparisons of different optimization cases demonstrate the effectiveness and computation efficiency of the proposed method, and hence its suitability in preliminary design. Moreover, the generalized model can be readily applied in the other electromagnetic modeling.Index Terms-Magnetic equivalent circuit, limited angle servo motor, magnetic saturation, multi-objective optimization. 0018-9464 (c)

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Optimization of design parameters of a limited angle torque motor using analytical hierarchy process and axiomatic design theory

Cited by 7 publications

References 31 publications

Operational range extension method for limited‐angle torque motors with irregular slot numbers

Operational range extension method for limited‐angle torque motors with irregular slot numbers

Analytical Study, Design and Optimization of Radial-Flux PM Limited-Angle Torque Motors

Preliminary Design and Optimization of Toroidally Wound Limited Angle Servo Motor Based on a Generalized Magnetic Circuit Model

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