A constant speed cruise control system and a control method applied to a pure electric vehicle

A pure electric vehicle, fixed-speed cruise technology, applied in the direction of control devices, etc., can solve the problems of electric vehicle structural characteristics, slope change load change vehicle, energy utilization rate decline, slow response of vehicle speed, etc., to achieve stable and effective design The effect of constant cruising speed, improved maneuverability, and increased mileage

Inactive Publication Date: 2018-12-21
上海精虹新能源科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the control methods currently applied to electric vehicles are mostly transplanted to traditional vehicles, without considering the structural characteristics of electric vehicl

Method used

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  • A constant speed cruise control system and a control method applied to a pure electric vehicle
  • A constant speed cruise control system and a control method applied to a pure electric vehicle
  • A constant speed cruise control system and a control method applied to a pure electric vehicle

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Embodiment Construction

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0048] Such as figure 1 As shown, the electric vehicle constant speed cruise control system of the present invention includes: an information collection and processing module, a cruise state machine module and a cruise control module. The three process calculations in turn, and finally get the torque control command of the drive motor.

[0049] Such as figure 2 As shown, the logic block diagram of the cruise control state machine of the electric vehicle of the present invention, the purpose of the cruise control state machine module is to calculate and output the required speed of the cruise control, and output the state of the cruise control. The vehicle controller realizes switching between various...

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Abstract

The invention discloses a constant speed cruise control system and a control method applied to a pure electric vehicle. The control system comprises an information acquisition processing module, a cruise state machine module and a cruise control module. The information acquisition processing module is responsible for identifying and processing cruise key signals and various signals. The cruise state machine module is responsible for taking the constant speed cruise key and some information of the vehicle as the signal input and outputting the vehicle demand signal through the transition condition and the limit condition of the state machine. The cruise control module is used for making the closed-loop control according to the constant speed cruise demand vehicle speed and the collected current vehicle speed, getting the acceleration or deceleration signal, and finally getting the constant speed cruise demand torque through conversion. The invention improves the controllability, the comfort and the safety of the vehicle. The invention can stably and effectively set cruise vehicle speed, and the response of the cruise vehicle speed is rapid. Smooth torque switching, stable speed; during cruising and decelerating, the energy can be recovered, the utilization rate of vehicle energy can be improved, and the driving range can be increased.

Description

technical field [0001] The invention belongs to the technical field of vehicle control of pure electric vehicles, and in particular relates to a constant speed cruise control system and control method applied to pure electric vehicles. Background technique [0002] In recent years, with the rapid development of the electric vehicle industry and the improvement of users' demand for electric vehicle functions, vehicle auxiliary driving systems have been increasingly applied to pure electric vehicles to reduce the driving intensity of drivers and improve Driving comfort, versatility and practicality. Among the vehicle assisted driving systems, the cruise control system is more representative. However, the control methods currently applied to electric vehicles are mostly transplanted to traditional vehicles, without considering the structural characteristics of electric vehicles, the impact of slope changes, and load changes on vehicles, resulting in slow response to vehicle sp...

Claims

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Application Information

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IPC IPC(8): B60W30/14B60W50/00
CPCB60W30/14B60W30/143B60W50/00B60W2050/0008B60W2710/083
Inventor 白羽鹤
Owner 上海精虹新能源科技有限公司
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