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Energy optimization method of drive-by-wire dual-motor coupling steering system

A steering system and energy optimization technology, applied in electric steering mechanism, steering mechanism, power steering mechanism, etc., can solve the problem that it is difficult to exert the energy-saving potential of dual-motor steering system, and achieve optimal energy distribution and vehicle economy optimization. Effect

Active Publication Date: 2020-02-07
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

But at this time, the two motors are in the same state, their working point is still only determined by the external load and the working point of the motor is directly related to the energy consumption of the motor, so this structure is difficult to exert the energy-saving potential of the dual-motor steering system

Method used

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  • Energy optimization method of drive-by-wire dual-motor coupling steering system
  • Energy optimization method of drive-by-wire dual-motor coupling steering system
  • Energy optimization method of drive-by-wire dual-motor coupling steering system

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Embodiment Construction

[0072] The present invention will be further described below in conjunction with accompanying drawing.

[0073] The structure of the wire-controlled dual-motor coupling steering system adopted in the present invention is as follows: figure 1 As shown, it includes acquisition unit, steering wheel assembly, ECU control module, main and auxiliary dual motor execution unit.

[0074]Among them, the acquisition unit is respectively connected with the ECU control module, the steering wheel assembly, and the main and auxiliary dual motor execution unit; the acquisition unit includes a steering wheel angle sensor 4, a steering wheel torque sensor 5, a main steering motor torque and speed sensor 9, an auxiliary The steering motor torque and rotational speed sensor 12, the vehicle speed sensor 19, and the yaw rate sensor are sensors that collect the state of the vehicle; and transmit the collected signals or instructions to the ECU control module, the steering wheel assembly, and the ma...

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Abstract

The invention provides an energy optimization method of a drive-by-wire dual-motor coupling steering system. The drive-by-wire dual-motor system is an active steering system set up based on actuator fault tolerance, and steering safety can be greatly improved through redundancy of an execution motor. The dual-motor coupling steering (DMCS) strategy is adopted for optimizing energy in the steeringprocess of the drive-by-wire system. The DMCS strategy can run in three steering modes to meet different steering conditions, and therefore steering efficiency is improved. On the premise of meeting vehicle stability, a controller can select the optimal steering mode online according to the vehicle state, and optimization distribution of energy between motors is achieved.

Description

technical field [0001] The invention relates to the technical field of a wire-controlled steering system and a steering energy consumption system, in particular to an energy optimization method for a wire-controlled dual-motor coupling steering system. Background technique [0002] Steering by wire, as an intelligent electronic control technology, has increasingly highlighted its unique advantages. The steer-by-wire system can realize active steering, which significantly improves the operational stability of the steering system. The cancellation of mechanical connection improves the stability and operation stability of the vehicle, but the use of wire control instead of mechanical connection makes fault-tolerant control the key to ensuring the safety of steer-by-wire vehicles. As the actuator of the system, the steering executive motor plays an important part in the steering process, and its state has a great influence on the steering of the car. During the steering proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D5/04B60W30/18B60W50/00G06N3/00
CPCB60W30/18036B60W50/00B60W2050/0031B60W2050/0037B62D5/0463G06N3/006Y02T10/84
Inventor 赵万忠王安周小川栾众楷王春燕
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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