Electromobile power-driven hydraulic power steering control system and method

Abstract

The invention relates to an electromobile power-driven hydraulic power steering control system and method. The vehicle state signal output ends of a brake pedal module, an accelerator pedal module and a gear selection module of the electromobile power-driven hydraulic power steering control system are connected with the vehicle state signal input end of an electromobile control unit; the electromobile speed computing information output end of an electromobile speed computing information acquisition module is connected with the electromobile speed computing information input end of the electromobile control unit; the control signal output end of the electromobile control unit is connected with the control end of a motor controller controlled by a power-driven hydraulic source; the electromobile control unit is used for analyzing the current speed, the gear state, the accelerator pedal state and the brake pedal state of the electromobile and sending a command that the power-driven hydraulic source is used for controlling the start / stop of a motor to the motor controller controlled by the power-driven hydraulic source. According to the invention, the intelligent start / stop of the power-driven hydraulic power steering control system is realized when an electromobile stops in the cases of traffic lights, stations and strong current electrification, and the energy consumption of the electromobile power-driven hydraulic power steering control system is remarkably reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle engineering, in particular to an electric vehicle electrohydraulic power steering control system and a control method. Background technique [0002] Most of the current new energy buses use electro-hydraulic source as the power source for power steering (fuel type buses generally use engine output hydraulic pressure as the power source for power steering), and the electro-hydraulic source relies on the work of an independent motor to establish hydraulic pressure. The electrohydraulic source control motors of new energy buses are all in continuous working mode, that is, they start to work as soon as the vehicle is connected to a strong power supply. In the parking state, it is still impossible to stop the electrohydraulic source to control the motor, thereby causing a waste of energy for the electric vehicle. What needs to be explained is that the total accumulated time of buses encountering traff...

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Problems solved by technology

[0002] Most of the current new energy buses use electro-hydraulic source as the power source for power steering (fuel type buses generally use engine output hydraulic pressure as the power source for power steering), and the electro-hydraulic source relies on the work of an independent motor to establish hydraulic pressure. The electrohydraulic source control motors of new energy buses are all in continuous working mode, that is, they start to work as soon as the vehicle is connected to a strong power supply. In the parking state, it is still impossible to stop the electrohydraulic source to control the motor, thus causing a waste of energy for electric vehicles

What needs to be explained is that the total accumulated time of buses encountering traffic lights and stops with strong electricity at the station is relatively long (more than 2 hours a day, and the electrohydraulic source control motor consumes nearly 2.5kwh of electricity during this period), which is also to a certain extent Reduced range of electric vehicles

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