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Control method and system for maximum driving speed of vehicle

A technology of maximum vehicle speed and vehicle driving, applied in the direction of control/regulation system, speed/acceleration control, control device, etc., which can solve the problems of not being able to adapt to actual needs and not being able to dynamically adjust

Active Publication Date: 2014-02-26
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The above three methods of controlling the maximum vehicle speed of vehicles all control the vehicle speed according to preset settings, and the specific values ​​of the vehicle speed are only a limited number. Because the conditions of vehicle operation, including information such as road conditions, weather, and vehicle loads, vary widely, the prior art The method cannot be dynamically adjusted according to the actual situation, and cannot adapt to the actual needs

Method used

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  • Control method and system for maximum driving speed of vehicle
  • Control method and system for maximum driving speed of vehicle
  • Control method and system for maximum driving speed of vehicle

Examples

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no. 1 example

[0039] As a modern means of transportation, vehicles have brought great convenience to people's production and life. However, due to the large size and high speed of vehicles, a little carelessness of the driver may easily cause catastrophic disasters. Therefore, safety issues It is often the primary consideration in vehicle design and operation. An important aspect of solving safety problems is to limit the speed of vehicles. As mentioned earlier, there are three main types of speed limits. The calibrated maximum speed of the vehicle V 标定maxIt is measured under excellent conditions (no wind, flat road, full load). Therefore, the vehicle speed value actually indicates the performance status of the vehicle, and does not represent the safe speed at which the driver can drive. The speed of the vehicle does not have the meaning of limiting the speed of the vehicle. It will be extremely dangerous if the driver drives at the above calibrated maximum speed under other specific con...

no. 2 example

[0049] In the above embodiments, the process of calculating the maximum vehicle speed value according to the acquired environmental information is an operation performed on an isolated moment. The road conditions on which vehicles drive are complex and changeable, and special situations inevitably occur when vehicles are driving. For example, there is a medium-sized stone somewhere on the overall flat road surface. When there is a "misjudgment" in the case of environmental information, the overall flat road surface is recognized as a slope, and the maximum driving speed value of the vehicle is calculated according to the "misjudgment" result. Obviously, the maximum driving speed of the vehicle obtained in this case does not Can not play the role of real speed limit to solve security problems. Therefore, it is necessary to make appropriate corrections to the above results. Usually, during a period of time after the vehicle starts and before it stops, its driving process is con...

no. 3 example

[0059] The first embodiment is the maximum vehicle speed control under a single environment information, which may not be the safest and most reliable method in practical applications. For example, if a vehicle carrying a certain load is driving on a long ramp, if only the environmental information of the ramp or the environmental information of the load is considered, the driving speed value obtained according to the first embodiment may still be dangerous to a certain extent. Therefore, in order to increase the safety factor of the vehicle, the present invention preferably comprehensively considers various environmental information to control the maximum speed of the vehicle. There are many ways to realize this "comprehensive consideration". For example, the maximum vehicle speed calculated according to the slope and the maximum vehicle speed calculated according to the load are weighted to obtain the final maximum vehicle speed value. The easiest way is to take the minimum ...

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Abstract

The invention provides a control method for maximum driving speed of a vehicle. The method comprises the following steps of: acquiring first environment information used for describing the environment situation on the driving of the vehicle; generating the maximum driving speed value of the vehicle through a preset function according to the first environment information, wherein the independent variable of the preset function is the first environment information, the dependent variable of the function is the maximum driving speed value of the vehicle, and the function belongs to a monotonic decreasing function; and controlling the maximum driving speed value of the vehicle according to the maximum driving speed value. The invention further provides a control system for the maximum driving speed of the vehicle. In the invention, the continuously changed maximum speed value within a certain range can be obtained according to the driving situations of the vehicle, and the dynamic adjustment on the maximum speed can be realized, thereby preferably meeting the needs of practical situations.

Description

technical field [0001] The invention relates to the technical field of vehicle speed control, in particular to a control method and a control system for the maximum vehicle speed of a vehicle. Background technique [0002] Based on safety considerations, it is often necessary to limit the speed of vehicles. Generally speaking, the restrictions on vehicle speed mainly include three categories: calibrated maximum speed limit, maximum driving speed control, and driving speed control. The calibrated maximum speed of the vehicle refers to the maximum speed that the vehicle can reach according to the national standard set by the manufacturer when the vehicle is manufactured. , flat, clean asphalt or cement road), depress the vehicle accelerator pedal to the bottom and pass the vehicle speed of the 200-meter road section. Driving speed control is mainly based on human reasons to limit the speed of the vehicle. For example, if the vehicle is driving on a controlled road section or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K31/04
Inventor 常久鹏王巍钟凯张有
Owner WEICHAI POWER CO LTD
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