Vehicle control method, device and plant and terminal

Abstract

The invention discloses a vehicle control method, device and plant and a terminal. The method includes the steps that the distance between an own vehicle and a target vehicle and the relative speed ofthe own vehicle and the target vehicle are obtained; the operation vehicle speed and the actual decelerated speed of the own vehicle are obtained in real time; whether the operation vehicle speed ofthe own vehicle meets a first preset condition or not is judged; if the operation vehicle speed of the own vehicle meets the first preset condition, according to the distance between the own vehicle and the target vehicle, the relative speed of the own vehicle and the target vehicle and the actual decelerated speed of the own vehicle, the second target decelerated speed of the own vehicle is obtained through calculation; and correspondingly, according to the second target decelerated speed and the actual decelerated speed of the own vehicle, the own vehicle is controlled. When the vehicle is at a low speed, the vehicle is smoothly braked through the own vehicle second target decelerated speed obtained through calculation conducted according to the distance between the own vehicle and the target vehicle, the relative speed of the own vehicle and the target vehicle and the actual decelerated speed of the own vehicle, and the actual decelerated speed of the own vehicle; and the deceleration smoothness and the response instantaneity of the vehicle are guaranteed.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, in particular to a vehicle control method, device, equipment and terminal. Background technique [0002] At present, vehicles are becoming more and more intelligent, and intelligent functions are emerging one after another, such as adaptive cruise, traffic congestion assistance, and automatic driving. The acceleration and deceleration of these functions rely on the acceleration and deceleration requests sent by the radar. When the vehicle decelerates, from a certain low speed (such as 5km / h) to the stage of stopping, the distance between the self-vehicle and the vehicle in front detected by the radar fluctuates up and down in a wave shape, resulting in the deceleration also fluctuating up and down in a wave shape , so that the deceleration process at this stage is not smooth, seriously affecting the driving experience. [0003] In order to solve the problem of fluctuations in th...

AI Technical Summary

Problems solved by technology

When the vehicle decelerates, from a certain low speed (such as 5km / h) to the stage of stopping, the distance between the self-vehicle and the vehicle in front detected by the radar fluctuates up and down in a wave shape, resulting in the deceleration also fluctuating up and down in a wave shape , so that the deceleration process at this stage is not smooth, seriously affecting the driving experience

[0003] In order to solve the problem of fluctuations in the deceleration calculated by the radar when the vehicle is at a low speed, the current conventional method is to filter the deceleration sent by the radar; to filter the deceleration sent by the radar, the filtering effect depends on the order of the filter, the filtering The higher the order, the better the filtering effect; however, if high-order filtering is implemented by hardware, the precision of the hardware is very high, which will increase the hardware cost of the vehicle; but if it is implemented by software, the delay of filtering calculation is relatively large , will affect the real-time performance of vehicle response

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