Torque Distribution Algorithm for Stability Control of Electric Vehicle Driven by Four In-Wheel Motors Under Emergency Conditions

Multi-motor wheel independent driving technology is an important direction of electric vehicle(EV). Based on the analysis of the features of existing independent driving system of electric vehicle, a new dual-motor independent driving system configuration was designed. Complete parameters matching and simulation analysis of the system include motor, reducer, and battery. Distributed control network architecture based on high-speed CAN bus was developed, and information scheduling was optimized and real-time predictability was analyzed based on the rate monotonic (RM) algorithm and jitter margin index. The vehicle lateral stability control was achieved based on coordinated electro-hydraulic active braking. Based on the new dual-motor independent driving system, a new battery electric car was designed and tested. The results show that the vehicle has excellent dynamic and economic performance.

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Vehicle Stability Control Through Predictive and Optimal Tire Saturation Management

Volume 6: 1st Biennial International Conference on Dynamics for Design; 14th International Conference on Advanced Vehicle Technologies ◽

10.1115/detc2012-71182 ◽

2012 ◽

Author(s):

Justin Sill ◽

Beshah Ayalew

Keyword(s):

Stability Control ◽

Vehicle Stability ◽

Distribution Problem ◽

Scale Separation ◽

Torque Distribution ◽

Hydraulic Hybrid ◽

Time Scale Separation ◽

Vehicle Stability Control ◽

Natural Time ◽

Set Up

This paper presents a predictive vehicle stability control (VSC) strategy that distributes the drive/braking torques to each wheel of the vehicle based on the optimal exploitation of the available traction capability for each tire. To this end, tire saturation levels are defined as the deficiency of a tire to generate a force that linearly increases with the relevant slip quantities. These saturation levels are then used to set up an optimization objective for a torque distribution problem within a novel cascade control structure that exploits the natural time scale separation of the slower lateral handling dynamics of the vehicle from the relatively faster rotational dynamics of the wheel/tire. The envisaged application of the proposed vehicle stability strategy is for vehicles with advanced and emerging pure electric, hybrid electric or hydraulic hybrid power trains featuring independent wheel drives. The developed predictive control strategy is evaluated for, a two-axle truck featuring such an independent drive system and subjected to a transient handling maneuver.

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Design of Torque Distribution Strategy for Four-Wheel-Independent-Drive Electric Vehicle

Automatic Control and Computer Sciences ◽

10.3103/s0146411620060103 ◽

2020 ◽

Vol 54 (6) ◽

pp. 501-512

Author(s):

Chuanwei Zhang ◽

Rongbo Zhang ◽

Rui Wang ◽

Bo Chang ◽

Jian Ma

Keyword(s):

Electric Vehicle ◽

Torque Distribution ◽

Distribution Strategy

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Mixed H∞/H2 Output Feedback Stability Control for Dual-Motor Independent Drive Electric Vehicle

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.658.602 ◽

2013 ◽

Vol 658 ◽

pp. 602-608 ◽

Cited By ~ 1

Author(s):

Cheng Lin ◽

Chun Lei Peng

Keyword(s):

Electric Vehicle ◽

Output Feedback ◽

Stability Control ◽

Vehicle Stability ◽

Robust Performance ◽

Output Feedback Controller ◽

Vehicle Stability Control ◽

Feedback Stability ◽

Simulation Results ◽

Yaw Moment

This paper presents the design of mixed H∞/H2Output Feedback Controller for Independent Drive Electric Vehicle Stability Control. It generates yaw moment by applying driving intervention at front Independent driving wheels according to the vehicle states. The performance of the proposed controller is evaluated through a series of simulations under different velocity and different mass. The simulation results show that the controller can help vehicle against a certain range of uncertainty (speeds and loads) and get excellent robust performance.

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