Driving Torque Control Method for Electric Vehicle with In-Wheel Motors

Yoshimura, Masataka; Fujimoto, Hiroshi

doi:10.1541/ieejias.131.721

Cited by 26 publications

(23 citation statements)

References 6 publications

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“…In this section, the driving force control (DFC) method is explained [11]. The block diagram of DFC is shown in Fig.…”

Section: Driving Force Controlmentioning

confidence: 99%

“…In addition, EVs have many advantages over internal combustion engine vehicles, since electric motors and inverters are utilized in EV drive systems. Their advantages can be summarized as follows [ The authors' research group also has proposed traction control methods [11][12][13][14]. Driving force control (DFC) [11], the latest one, is a control method that directly controls driving force with driving force outer loop based on driving force observer, and wheel-speed inner loop based on slip ratio control [12,13], which can generate large yet uncertain driving force on slippery roads.…”

Section: Introductionmentioning

confidence: 99%

“…Their advantages can be summarized as follows [ The authors' research group also has proposed traction control methods [11][12][13][14]. Driving force control (DFC) [11], the latest one, is a control method that directly controls driving force with driving force outer loop based on driving force observer, and wheel-speed inner loop based on slip ratio control [12,13], which can generate large yet uncertain driving force on slippery roads. With this control system, the desired driving force is generated within the saturator limits, and traction is retained by slip ratio control when the driving force saturates.…”

Section: Introductionmentioning

confidence: 99%

“…Since DFC proposed in [11] is considered for frontwheel-driven EVs, it is inevitable that total driving force diminishes on extremely slippery roads, which also applies to the other traction control methods. However, sudden decrease of driving force leads to driver discomfort, and thus a novel control method is needed to retain total driving force.…”

Section: Introductionmentioning

confidence: 99%

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Four-wheel Driving-force Distribution Method for Instantaneous or Split Slippery Roads for Electric Vehicle

2013

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Original scientific paperIn this paper, a four-wheel driving force distribution method based on driving force control is proposed. Driving force control is an anti-slip control method, previously proposed by the authors' research group, which generates appropriate driving force based on the acceleration pedal. However, this control method cannot completely prevent reduction of driving force when a vehicle runs on an extremely slippery road. If the length of a slippery surface is shorter than the vehicle's wheel base, the total driving force is retained by distributing the shortage of driving force to the wheels that still have traction. On the other hand, when either the left or right side runs on a slippery surface, yaw-moment is suppressed by setting total driving forces of left and right wheels to be the same. Therefore, four-wheel driving force distribution method is proposed for retaining driving force on instantaneous slippery roads, and suppressing yaw-moment on split ones. The effectiveness of the proposed distribution method is verified by simulations and experiments. Key words: Electric vehicle, Traction control, Slip ratio, Driving force, Least squares methodMetoda za raspodjelu pogonske sile električnih vozila sačetiri kotača na kratkotrajno ili polovično skliskim cestama. U ovom radu predložena je metoda za raspodjelu pogonske sile električnih vozila sačetiri kotača temeljena na upravljanju pogonskom silom. Upravljanje pogonskom silom je metoda upravljanja koju je ranije predložila autorova istraživačka grupa, a koristi se za sprječavanje proklizavanja. Ova metoda generira prikladnu pogonsku silu temeljem pritiska na papučicu ubrzanja. Ipak, ova metoda upravljanja ne može u potpunosti spriječiti smanjenje pogonske sile kada vozilo naiîe na ekstremno sklisku cestu. Ako je dužina skliske površine kraća od meîuosovinskog razmaka vozila, ukupna pogonska sila se zadržava redistribucijom manjka pogonske sile na kotače koji i dalje imaju trakciju. S druge strane, kada lijeva ili desna strana vozila naiîe na sklisku površinu, moment zakretanja se potiskuje postavljanjem ukupne pogonske sile lijevih i desnih kotača na jednaki iznos. Dakle, metoda za raspodjelu pogonske sile predložena je za zadržavanje pogonske sile na kratkotrajno skliskim cestama, te za sprječavanje momenta zakretanja na polovično skliskim cestama. Učinkovitost predložene metode verificirana je simulacijski i eksperimentalno.Ključne riječi: električno vozilo, upravljanje proklizavanjem, omjer proklizavanja, pogonska sila, metoda najmanjih kvadrata

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“…In this section, the driving force control (DFC) method is explained [11]. The block diagram of DFC is shown in Fig.…”

Section: Driving Force Controlmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Four-wheel Driving-force Distribution Method for Instantaneous or Split Slippery Roads for Electric Vehicle

2013

Self Cite

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“…By replacing the mechanical transmission systems with the independent and direct driving system, the IWMEVs have great potential advantages in dynamics control, space utilization, high driving efficiency, and reliable redundancy driving system, etc. [1][2][3], which are beneficial to improve vehicle performance. As an ideal carrier to research novel dynamics control system, the IWMEVs are considered as one of the important development direction of the next generation EVs.…”

Section: Introductionmentioning

confidence: 99%

Ride Comfort Optimization of In-Wheel-Motor Electric Vehicle with In-Wheel Vibration Absorber

Liu¹,

Gu²,

Zhang³

2017

Preprint

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Abstract:In this paper, an in-wheel vibration absorber for In-wheel-motor electric vehicle (IWM EV) is designed, and a comprehensive control strategy of in-wheel absorber and vehicle suspension is proposed to improve vehicle ride comfort. The proposed in-wheel vibration absorber, designed for suppressing the motor vibration, is composed of a spring and a controllable damper. The values of in-wheel spring stiffness and damper initial coefficient are determined by using the improved particle swarm optimization (IPSO) algorithm, which is carried on the typical driving condition. To deal with the negative interaction effects between vehicle suspension and in-wheel absorber, the linear quadratic regulator (LQR) algorithm is utilized to control suspension damper, and the fuzzy PID method is utilized to control in-wheel damper. Based on the four evaluation indexes including vehicle body vertical acceleration, suspension dynamic deflection, wheel dynamic load and motor wallop, the simulation results show that, the proposed LQR control of suspension effectively improves vehicle ride comfort, and the fuzzy PID control of in-wheel damper exhibits superior performance of motor vibration suppressing in comparison to conventional electric wheel.

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Fundamental Research on Control Method for Power Conversion Circuit of Wireless In‐Wheel Motor Using Magnetic Resonance Coupling

Gunji

Imura

Fujimoto

2016

Electrical Engineering Japan

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SUMMARYThe in-wheel motor (IWM) is the most preferred driving mechanism of electric vehicles for its advantages of vehicle motion control, energy efficiency, and vehicle design flexibility. One of the technical problems of the IWM is the reliability of power and the signal wires. Wireless power transfer technology is the best solution to this problem. In this paper, a bidirectional wireless power transfer circuit using a primary inverter and a secondary converter is proposed. We propose a control method for both the inverter and the converter to stabilize the secondary dc-link voltage. The proposed method is verified by simulation and experiment using simulated test equipment. C⃝

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Driving Torque Control Method for Electric Vehicle with In-Wheel Motors

Cited by 26 publications

References 6 publications

Four-wheel Driving-force Distribution Method for Instantaneous or Split Slippery Roads for Electric Vehicle

Four-wheel Driving-force Distribution Method for Instantaneous or Split Slippery Roads for Electric Vehicle

Ride Comfort Optimization of In-Wheel-Motor Electric Vehicle with In-Wheel Vibration Absorber

Fundamental Research on Control Method for Power Conversion Circuit of Wireless In‐Wheel Motor Using Magnetic Resonance Coupling

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