Vehicle speed control system for intelligent driving vehicle

Abstract

The invention provides a vehicle speed control system for an intelligent driving vehicle. The system comprises a vehicle information and a state response module, a background server, a control decision module and a control and execution module, wherein the vehicle information and state response module and the control and execution module are arranged on a vehicle, and are used for acquiring the current driving state and road surface response information of the intelligent driving vehicle, the position information and the parameter information of the vehicle, and carrying out information interaction with the background server on the acquired information; after the background server receives the information, the background server performs data query and vehicle type matching operation on a database in the control decision module through the control decision module; and after the matching data is obtained, a corresponding initial deceleration target vehicle speed is given and sent to thecontrol and execution module, and the control and execution module controls an accelerator pedal and a brake pedal of the intelligent driving vehicle, so that the vehicle passes through the current road at the target vehicle speed.

Description

technical field [0001] The invention relates to a vehicle speed control system, in particular to a vehicle speed control system for intelligent driving vehicles. Background technique [0002] With the rapid development of information technology, smart driving cars with automatic driving functions have gradually appeared in the public's field of vision, and road tests have begun for subsequent mass production and listing. [0003] Among them, the more common vehicle speed control system for intelligent driving is mainly based on vehicle driving control for safety requirements, such as vehicle following, vehicle early warning, vehicle collision avoidance, etc. This is the most basic technical requirement in intelligent driving, but it does not consider To the occupant's balance between passing efficiency and comfort, there is a lack of a people-oriented control strategy. [0004] For example, when an existing intelligent driving vehicle is driving straight on an urban express...

AI Technical Summary

Problems solved by technology

[0004] For example, when an existing intelligent driving vehicle is driving straight on an urban expressway, when it encounters a damaged road surface, such as a pit, the driving vehicle cannot recognize the road surface characteristics, so it still drives at the maximum safe speed under the speed limit allowed by the current road. In this way, it will cause large bumps

Moreover, since the vehicle configuration has not considered the comfort of the occupants in the vehicle, when the road is damaged through damage, the occupants in the vehicle will feel uncomfortable.

[0005] As another example, some existing following control systems for intelligent driving vehicles, when encountering a vehicle in front that loses its following target due to turning, will judge that there is no obstacle ahead, accelerate suddenly, and then stop suddenly after turning the corner because of the following vehicle in front To maintain a safe distance, although this control can complete the driving task during automatic driving, it will cause the occupants in the car to lose the comfort of the ride during the process of rapid acceleration and sudden braking

[0006] In addition, in the case of low-speed follow-up, due to the problem of the control algorithm, there will be frequent corrections to the accelerator and brake pedals, resulting in a feeling of frustration when driving, which will bring discomfort to the occupants.

[0007] Chinese patent application No. 201410487956.9 discloses a vehicle performance parameter control system and method with driver habits. Although it takes the driver's driving habits into account, it is also limited to a vehicle and the driver's driving behavior and Habits, and the control is achieved by adjusting its own performance rather than driving behavior, which is not universal

[0008] Chinese patent application No. 201410494785.2 discloses a PID control method, which realizes vehicle speed control based on brake-by-wire, electronic throttle and CAN bus. This method also has the problem of frequent correction of vibration, and the control effect on driving speed is poor.

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