Дисертації з теми "Motor wheel"
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Norin, Gustav. "Detecting External Forces on an Autonomous Lawnmowing Robot with Inertial, Wheel Speed and Wheel Motor Current Measurements." Thesis, Linköpings universitet, Reglerteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-137434.
Повний текст джерелаFREITAS, DANIEL ZACARIAS. "EFFICIENCY ANALYSIS AND CONTROL OF AN INTEGRATED IN-WHEEL ELECTRIC MOTOR." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26373@1.
Повний текст джерелаCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
Esta dissertação apresenta o estudo para o desenvolvimento de um powertrain elétrico com motorização independente na massa não suspensa do veículo, acoplado diretamente nas rodas In Wheel ou Hub-Motor . O desenvolvimento do sistema proposto visa à maximização da eficiência dos veículos elétricos pela minimização das perdas relacionadas a sistemas mecânicos, como na transmissão convencional utilizada em veículos com motorização única. Outro fator motivador para o desenvolvimento do powertrain com motorização independente é a aplicação de controles independentes para cada roda, possibilitando desenvolver e aplicar uma gama de controles no veículo, os quais com a motorização única não são possíveis ou possuem desempenho não satisfatório. O trabalho apresenta uma visão geral sobre os veículos elétricos, o estudo do comportamento dinâmico vertical com o aumento da massa não suspensa do veículo, desenvolvimento de um controle de velocidade para o powertrain proposto, desenvolvimento de um controle de frenagem ABS elétrico, simulação do sistema em ciclos de direção com o cálculo da eficiência energética do powertrain, e um experimento em um dinamômetro de bancada para validação da eficiência energética dos ciclos simulados.
This paper presents a study for the development of an electric powertrain with independent engines in the vehicle mass not suspended, directly coupled to the wheels In Wheel or Hub-Motor . The development of the proposed system aims at maximizing the efficiency of electric vehicles by minimizing losses related to mechanical systems, as in conventional transmission used in vehicles with single engine. Another motivating factor for the development of powertrain with independent engines is the application of independent controls for each wheel, allowing for the development and application of a range of controls in the vehicle, which would not be possible or would have unsatisfactory performance if a single engine was used. This work presents an overview of electric vehicles, the study of the dynamic vertical behavior with increasing mass of the suspended vehicle, development of a speed control for the proposed powertrain, development of an electric ABS braking control, system simulation toward cycles to calculate the energy efficiency of the powertrain, and an experiment on a bench dynamometer to validate the energy efficiency of simulated cycles.
van, den Berg Martinus Anthoon. "Aerodynamic interaction of an inverted wing with a rotating wheel." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/49927/.
Повний текст джерелаZhang, Guoguang. "Fault Estimation and Fault-tolerant Control for In-wheel Motor Electric Vehicles." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1500421425793541.
Повний текст джерелаIfedi, Chukwuma Junior. "A high torque density, direct drive in-wheel motor for electric vehicles." Thesis, University of Newcastle upon Tyne, 2014. http://hdl.handle.net/10443/2352.
Повний текст джерелаZhang, Zhe. "Development and validation of microvibration models for a satellite reaction wheel assembly." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/348811/.
Повний текст джерелаHeyder-Bruckner, Jacques. "The aerodynamics of an inverted wing and a rotating wheel in ground effect." Thesis, University of Southampton, 2011. https://eprints.soton.ac.uk/207263/.
Повний текст джерелаTerakawa, Tatsuro. "Omnidirectional Mobile Mechanisms and Integrated Motor Mechanisms for Wheeled Locomotion Devices." Kyoto University, 2019. http://hdl.handle.net/2433/242493.
Повний текст джерелаKyoto University (京都大学)
0048
新制・課程博士
博士(工学)
甲第21755号
工博第4572号
新制||工||1713(附属図書館)
京都大学大学院工学研究科機械理工学専攻
(主査)教授 小森 雅晴, 教授 松野 文俊, 教授 松原 厚
学位規則第4条第1項該当
Yilmaz, Kurtulus. "Comparison Of Axial Flux And Radial Flux Brushless Dc Motor Topologies For Control Moment Gyroscope Wheel Applications." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/12610565/index.pdf.
Повний текст джерелаRomero, Sergio. "Analysis of a light permanent magnet in-wheel motor for an electric vehicle with autonomous corner modules." Thesis, KTH, Elektrisk energiomvandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-53692.
Повний текст джерелаGougani, Milad. "Hall sensor-based locking electric differential system for BLDC motor driven electric vehicle with independent wheel drives." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42168.
Повний текст джерелаPerekopskiy, Sergey [Verfasser], and Roland [Gutachter] Kasper. "On the analysis and design of in-wheel motor for vehicle application / Sergey Perekopskiy ; Gutachter: Roland Kasper." Magdeburg : Universitätsbibliothek Otto-von-Guericke-Universität, 2020. http://d-nb.info/1220035076/34.
Повний текст джерелаBernacki, Mark. "Design and development of an extended range electric bywire/wireless hybrid vehicle with a near wheel motor drivetrain." Thesis, UOIT, 2009. http://hdl.handle.net/10155/42.
Повний текст джерелаHayakawa, Yoshikazu, and Akira Ito. "Design of Fault Tolerant Control System for Electric Vehicles with Steer-By-Wire and In-Wheel Motors." International Federation of Automatic Control (IFAC), 2013. http://hdl.handle.net/2237/20771.
Повний текст джерелаFaithfull, Paul. "A hardware-in-the-loop approach to independent wheel control development using a physical scale model as a low cost prototyping tool : executive summary." Thesis, University of Warwick, 1999. http://wrap.warwick.ac.uk/73389/.
Повний текст джерелаWiet, Christopher J. "Energy Optimization of an In-Wheel-Motor Electric Ground Vehicle over a Given Terrain with Considerations of Various Traffic Elements." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1397045426.
Повний текст джерелаDrahý, Jan. "Modální analýza turbínového kola pro letecký motor." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229038.
Повний текст джерелаWanner, Daniel, Trigell Annika Stensson, Lars Drugge, and Jenny Jerrelind. "Survey on fault-tolerant vehicle design." KTH, Farkost och flyg, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98811.
Повний текст джерелаQc 20120730
Rolle, Bernhard [Verfasser]. "Model Predictive Energy Management for Induction Motor Drives and All-Wheel-Drive Battery Electric Vehicles : A Flatness Based Approach / Bernhard Rolle." Düren : Shaker, 2021. http://d-nb.info/1233547828/34.
Повний текст джерелаCamacho, Silva Leandro. "Modeling and Design of the Electric Drivetrain for the 2013 Research Concept Vehicle." Thesis, KTH, Elektrisk energiomvandling, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-133353.
Повний текст джерелаRolle, Bernhard [Verfasser], and Oliver [Akademischer Betreuer] Sawodny. "Model predictive energy management for induction motor drives and all-wheel-drive battery electric vehicles : a flatness based approach / Bernhard Rolle ; Betreuer: Oliver Sawodny." Stuttgart : Universitätsbibliothek der Universität Stuttgart, 2021. http://d-nb.info/123272792X/34.
Повний текст джерелаChen, Yan. "Energy-Efficient Control Allocation for Over-Actuated Systems with Applications to Electric Ground Vehicles." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1366305314.
Повний текст джерелаMartínez, Daniel. "Design of a Permanent-Magnet Synchronous Machine with Non-Overlapping Concentrated Windings for the Shell Eco Marathon Urban Prototype." Thesis, KTH, Elektrisk energiomvandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-109741.
Повний текст джерелаB, M. Shiva Kumar, and kathiravan Ramanujam. "Thermal Simulation of Hybrid Drive System." Thesis, Linköpings universitet, Fluida och mekatroniska system, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-71695.
Повний текст джерелаWanner, Daniel. "Controlling over-actuated road vehicles during failure conditions." Doctoral thesis, KTH, Fordonsdynamik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-166819.
Повний текст джерелаQC 20150520
Baserrah, Salwa [Verfasser], Bernd [Akademischer Betreuer] Orlik, and Bernd [Akademischer Betreuer] Kuhfuß. "Theoretical and Experimental Investigations of a Permanent Magnet Excited Transverse Flux Machine with a Segmented Stator for In-Wheel Motor Applications / Salwa Baserrah. Gutachter: Bernd Orlik ; Bernd Kuhfuß. Betreuer: Bernd Orlik." Bremen : Staats- und Universitätsbibliothek Bremen, 2014. http://d-nb.info/1072226251/34.
Повний текст джерелаStoklásek, Tomáš. "Návrh konstrukčního řešení automatického podavače tablarů pro skladovací systém SLL LogiMat." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-241722.
Повний текст джерелаLinder, Johan. "An integrated brake disc and electric drive for vehicle propulsion : A FEASIBILITY STUDY." Thesis, KTH, Skolan för elektro- och systemteknik (EES), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-187652.
Повний текст джерелаI detta arbete undersöks möjligheten att integrera en bromsskiva med elmaskin. Hjul-motorer har flera fördelar, bland annat sparas utrymme i själva bilen, individuell kontroll samt drivning av hjulen utan mekaniska transmissioner. Men hjulmotorer som kan användas idag väger oftast så pass mycket att den odämpade massan ökar kritiskt och köregenskaper av fordonet då blir lidande. Genom att integrera en befintlig del i hjulet kan ¨okningen av odämpade massan minskas. Att använda bromsskivan som rotor, kräver att denna tål temperaturer ¨over 500◦C samt påfrestningar och slitage som en vanlig mekanisk friktionsbroms måste uthärda. Den andra delen av maskinen, statorn kommer även denna att påverkas av de höga temperaturerna av bromsskivan som kommer ledas via konvektion, konduktion och strålning. Möjligheten att kyla statorn med vätska och om detta är tillräckligt undersöks. För att analyserna genomförbarheten av projektet har termiska, elektriska och mekaniska modeller använts. Resultaten har analyserats där maskinens vikt, kostnad, termisk tålighet och elektrisk prestanda har legat till grund för bedömningen om lösningen; att integrera en broms-skiva med elmaskin är rimlig eller ej.
Yang, Sichao. "In-wheel motors for electric vehicles." Thesis, University of Newcastle upon Tyne, 2017. http://hdl.handle.net/10443/4054.
Повний текст джерелаБєлих, Віталій Ростиславович. "Конструкторсько-технологічне забезпечення електричної платформи "odi" для людей з інвалідністю (комплексна магістерська дисертація)". Master's thesis, КПІ ім. Ігоря Сікорського, 2019. https://ela.kpi.ua/handle/123456789/31365.
Повний текст джерелаBased on the analysis of the state of the issue in the field of transportation of people with disabilities, it is determined that in developed countries there are developments that can improve transportation conditions, including those equipped with electric movement drives. Such technologies are already available in most countries to a wide range of people with medium and high incomes.In the process, a vehicle design was created, the rear suspension system of the electric platform was analyzed and designed. To verify the results, a computer simulation of the suspension was carried out.Made in a 1: 4 scale layout of the rear suspension truss, and the layout design of the electric platform.
Morini, Matteo. "Solar Wheel." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2021.
Знайти повний текст джерелаde, Fluiter Travis. "Design of lightweigh electric vehicles." The University of Waikato, 2008. http://hdl.handle.net/10289/2438.
Повний текст джерелаLe, Marquer Nicolas. "Vers la synthèse d'une roue à rochet moléculaire." Thesis, Le Mans, 2015. http://www.theses.fr/2015LEMA1025/document.
Повний текст джерелаIn the field of molecular machines, systems producing an oriented motion have been intensely looked for. Results, obtained toward this goal, do not exploit Brownian motion whereas it happens in natural systems such as myosin. Hereby we propose the synthesis of a molecular ratchet aiming to mimic this phenomenon or to be able to act as a molecular motor through low energy activation. The first part of this work consisted in the design by modelisation of a synthetic equivalent of a ratchet, basically consisting of a toothed wheel and a pawl. This study aim at determining if such a molecule could produce an oriented motion by simple Brownian motion. This system is consisting of a functionalized bishomoinositol moiety as the wheel and a cycloadduct of anthracene as the pawl, linked by spacers allowing the adjustment of the energy barriers. The synthesis of a model where a bicyclo[2.2.2]octane moiety plays the role of a simplified wheel has been conducted in order to validate various synthetic strategies. This gave the opportunity to develop an alternative method of the synthesis of the bicyclo[2.2.2]octanedicarboxylic diacid as well as an esterification methodology compatible with the bulkiness or low solubility of both partners. The macrolactonization product could be obtained and opens some possible applications as nanovehicle wheels. The synthesis of the model was the occasion to highlight synthetic limitations concerning the spacers (ethers) in the original system. A new series of targets taking into account the synthetic restrictions while keeping the ratchet behavior were designed. The discovery of another synthetic difficulties (amides, triazoles, tetrazoles and alkenes) yielded a single refined target. Toward this goal, the synthesis of the bishomoinositol functionalized in the bridgehead position was engaged in a first pathway including these functions at the beginning of the synthesis, the second way introducing them on the bishomoinositol at the end of the sequence
Fritz, Martin [Verfasser], and A. [Akademischer Betreuer] Albers. "Methodische Entwicklung modellbasierter Überwachungsfunktionen für mechatronische Systeme im Kraftfahrzeug am Beispiel eines elektromechanischen Radbremsaktors = Methodological Development of Model-Based Supervision Functions for Mechatronic Systems in Motor Vehicles Using the Example of an Electromechanical Wheel Brake Actuator / Martin Fritz ; Betreuer: A. Albers." Karlsruhe : KIT-Bibliothek, 2021. http://d-nb.info/1235072649/34.
Повний текст джерелаUšiak, Michal. "Porovnání koncepcí hybridního pohonu v režimu denního dojíždění do práce." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-417429.
Повний текст джерелаLiao, Yonghui. "Analysis of fault conditions in permanentmagnet in-wheel motors." Thesis, KTH, Elektrisk energiomvandling, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-53685.
Повний текст джерелаOlša, Petr. "Návrh řízení všesměrového mobilního robotu O3-X." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-229210.
Повний текст джерелаHajihosseinlu, Amin. "Traction control of an electric vehicle with four in-wheel motors." IEEE, 2015. http://hdl.handle.net/1993/30601.
Повний текст джерелаJayakumar, Gautham. "Modeling And Analysis Of Fault Conditions In Avehicle With Four In-Wheel Motors." Thesis, KTH, Fordonsdynamik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-121475.
Повний текст джерелаGeamanu, Marcel-Stefan. "Estimation and dynamic longitudinal control of an electric vehicle with in-wheel electric motors." Phd thesis, Université Paris Sud - Paris XI, 2013. http://tel.archives-ouvertes.fr/tel-00871231.
Повний текст джерелаRefvem, Charles T. "Design, Modeling and Control of a Two-wheel Balancing Robot Driven by BLDC Motors." DigitalCommons@CalPoly, 2019. https://digitalcommons.calpoly.edu/theses/2110.
Повний текст джерелаRoštek, Martin. "Estimace rychlosti vozidla." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2018. http://www.nusl.cz/ntk/nusl-378739.
Повний текст джерелаClarsen, Georgine. "The vote on wheels : Australian women and motoring, 1915-1945 /." Connect to thesis, 1997. http://eprints.unimelb.edu.au/archive/00000649.
Повний текст джерелаTseng, Wei-Tung, and 曾威棟. "In-Wheel Motor Control of Electric Vehicle." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/8g4ez7.
Повний текст джерела國立臺北科技大學
車輛工程系所
97
In recent years, the environmental protection problems such as pollution, limited crude oil resources, and drastic rises in fossil fuel prices are great challenges for the new generation of automotive development. Therefore, a lot of researches and development activities are focused on electric vehicles research. The new generation of electric vehicles driven technology is motor installed inside the wheel. The brake system and drive system was integrated with the wheel motor control technology. For such driving technology, the wheel motor output torque is relatively large, and the wheel motor torque control and rotation speed control are important discussing factors. In addition, when vehicles running in the wet ground or driving across slippery road surface with high speed, the acceleration slip of the electric vehicles driving wheel will be increase, and the adhesion between tire and road surface will be reduced to include vehicle slip phenomenon, or vehicle out of control. Moreover, the road surface is not as the ideal perfect and uniform, for example, water surface, sand surface or ice surface, etc. Then, the road surface friction coefficient is greater difference. Therefore, the slip control can effectively improve the safety of the vehicles, and increase the vehicle driving stability and security. In this study, the self-organizing fuzzy control theory (SOFC) is using to control the rotational speed and motor torque of the in-wheel motor, and then the vehicle speed. Finally, the vehicles anti-slip stability control problem is studied.
Liu, Chia-Hsi, and 劉佳熹. "Optimal Design of Axial Flux Wheel Motor." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/37661317774150218006.
Повний текст джерела國立臺灣大學
機械工程學系研究所
86
Recently, direct-driven wheel motors have been widely applied to electric vehicles, where transmission mechanism and gearbox are not necessary, and ther efore, mechanical loss can be avoided. Axial-flux permanent magnet (AFPM) moto rs can be designed and constructed to achieve a higher torque-to-weight ratio and motor efficiency, and are suitable for wheel motor applications. This pape r presents the procedure of an optimal design of axial-flux permanent motors. First, a set of mathematical models is developed to describe the APFM design i n terms of the design variables. Then, the optimal shape of motor is determine d by the optimization technology to meet various specifications and constraint s. The design results are investigated by the 2D electromagnetic analysis, and the final design decision is made through engineering experience and manufact uring requirements.
Huang, Ying-ruei, and 黃盈瑞. "Development and Traction Control of Front-wheel Drive In-wheel Motor Electric Vehicles." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65565605896637143344.
Повний текст джерела國立臺南大學
綠色能源科技研究所碩士班
100
The paper proposed the development and traction control system (TCS) of a front-wheel drive electric vehicle (EV). Two in-wheel motors were utilized in the system to construct a power-scattered EV. The permanent magnet servo motor can individually control the motor power output and immediately limit the torque individual. This paper imposed the maximum transmission torque estimation (MTTE) system as the core of TCS for preventing the vehicle skid. The control algorithm is embedded in a high speed microprocessor, which can real-timely monitor feedback signals. In the torqure ouput, a plenary gearbox was employed to amplify the motor torque. This paper also used the simulation software “CarSim” to analyze the anti-skid performace of the prototype EV which is called Corsa-EV. The crucial issues include vehicle dynamics construction and anti-skid evaluation. From the results of simulation, it is obvious that the propsed EV can achieve an accetptable performance of stability and safety with the enhancement of MTTE.
Wang, Qi-Quan, and 王啟全. "Optimal Design and Implementation of In-Wheel Motor." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/44207425865843902449.
Повний текст джерела高苑科技大學
電機工程研究所
97
In this thesis, a novel systematic and efficient approach, using the fuzzy-based Taguchi method with multiple performance characteristics index (MPCI) is employed for obtaining the robust design of in-wheel permanent-magnet (PM) motor with both the lower torque ripple factor and higher efficiency. According to the geometrical parameters of the PM motor selects the controllable factors and their levels, such as the permanent magnet thickness in rotor, air-gap width, opening slot width and slot tooth width at stator, the proposed method first establishes the orthogonal array (OA) that is recommended by the Taguchi method then the multiple targets are coordinated by the fuzzy inference mechanism to obtain the better combination of the geometrical parameters for lower torque ripple factor and higher efficiency. The finite element method (FEM) is used as the analyzed tool of motor for torque ripple and performance analysis. MagneForce BLDC software is used as the platform for motor’s design and analysis. Results have shown that the proposed method can obtain the suitable motor’s geometric parameters for both reducing the cogging torque and enhancing the operating efficiency. In addition, a driver based on MC33033 IC with hall sensor is implemented to drive smoothly the in-wheel PM motor for achieving V/f speed control model. The driver, involving the power supply unit, control unit and power amplitude unit, has been realization. Integrating the driver and in-wheel PM motor, the test results have shown the drive system has the excellent performance that suits to be applied in electric vehicles (EV), such as the electric scooter and electric bicycle.
Zhao, Ying-Zhi, and 趙英志. "Development of a Direct-Drive Axial Flux Wheel Motor." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/55403443847631481348.
Повний текст джерела淡江大學
機械與機電工程學系碩士班
93
The purpose of this paper is to design a direct-drive axial flux wheel motor. The motor dimensions are determined based on the required rating. A set of magnetic circuit models are used to calculate the basic motor characteristics and the design which has the shortest axial length is selected. The static and dynamic performance of the designed motor are calculated and verified with a finite element software. A prototype motor and driver is built to verify the performance of the motor experimentally. Finally, a passive magnetic bearing is designed to reduce the radial force acting on the motor bearings; the analysis shows that the bearings’ life can be extended with this design.
Cheung, Cheng-Huei, and 張崢輝. "Analysis and Optimal Design of Axial Flux Wheel Motor." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/80838751761000541718.
Повний текст джерела國立臺灣大學
機械工程學研究所
88
Axial-flux permanent magnet (AFPM) motors can be designed to achieve a higher torque-to-weight ratio and motor efficiency, and are suitable for wheel motor applications. In permanent magnet reluctance motors, both magnets and electric steel are placed in the rotor. A reluctance torque component is added to total torque while there are steel in the rotor. This paper presents the procedure of an optimal design of APFM motor, including brushless dc motor and permanent magnet reluctance motors. First, a set of mathematical model is developed to describe the APFM design in terns of the design variables. Then the optimal shape of motor is determined by the optimization technology to meet various specifications. The design results are investigated by the 2D electromagnetic analysis. Finally comparison of brushless dc motor and permanent magnet reluctance motors is made.
Pan, Yann-Guang, and 潘彥光. "The Optimal Waveform Research of Direct-Driven Wheel Motor." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/48594313239473438823.
Повний текст джерела國立臺灣大學
機械工程學研究所
87
The optimal design of the driving current pattern for a disc-type axial-flux brushless DC motor is proposed in this paper. The electro-magnetic dynamical model of the motor is established, describing the relationship between the output torque and driving current pattern is obtained by maximizing the torque output with respect to the rotor shift. Therefore, the average torque produced by the exciting current with optimal phase angle is greater than that by traditional three-phase-on current pattern with fixed 120-degree phase shift. The results are verified with experiments on the motor performance by the use of dynamometer.