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A method and device for adjusting torque of an automobile, and an automobile

A torque regulation and automotive technology, applied in control devices, control/regulation systems, vehicle components, etc., can solve problems such as vehicle speed error, frequent fluctuations in vehicle speed up and down, and large output torque fluctuations, so as to reduce large vehicle speed errors and reduce The effect of fluctuating vehicle speed up and down and reducing output torque fluctuation

Active Publication Date: 2022-07-15
BEIQI FOTON MOTOR CO LTD
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  • Claims
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Problems solved by technology

[0003] At present, in order to improve the control accuracy of vehicle speed, the PI torque adjustment method is generally used in vehicle speed control, but the current method of using PI torque adjustment to control the speed limit has the problem of large output torque fluctuations, resulting in frequent fluctuations in vehicle speed and vehicle speed errors. larger

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  • A method and device for adjusting torque of an automobile, and an automobile
  • A method and device for adjusting torque of an automobile, and an automobile
  • A method and device for adjusting torque of an automobile, and an automobile

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Embodiment Construction

[0043] In order to make the above objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, only a part of the embodiments of the present invention, but not all of the embodiments, and are not used to limit the present invention.

[0044] The inventor found that the current method of controlling the speed limit based on PI torque adjustment has the problem that the output torque of the power system fluctuates greatly.

[0045] The inventor has further studied and found that the reason for the above problem is that in the process of PI adjustment, there is no reference torque, but only the output torque corresponding to the current actual vehicle speed and the output torque corresponding to the target vehi...

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Abstract

The invention discloses a method, a device and an automobile for adjusting torque of an automobile. The invention relates to the field of vehicle control. The method includes: receiving a current output torque of a power system; taking the current output torque of the power system as a reference torque, and using a PI torque The adjustment adjusts the reference torque to obtain the target torque. The present invention adjusts on the reference torque. Based on the reference torque and the corresponding output torque at the target vehicle speed, when PI torque adjustment is performed, it is not necessary to select a larger P gain parameter, but only a smaller P gain parameter needs to be selected. It can make the actual output torque of the vehicle reach the target output torque corresponding to the target speed of the vehicle. The selection of the P gain parameter is small, which greatly reduces the output torque fluctuation of the power system, thereby greatly reducing the fluctuation of the vehicle speed and the large speed error of the vehicle. Therefore, the driving experience of the driver is improved, and the method for adjusting the torque of the vehicle of the present invention has high practicability.

Description

technical field [0001] The present invention relates to the field of vehicle control, in particular to a method and device for adjusting the torque of an automobile and an automobile. Background technique [0002] Vehicle speed limits are currently widely used in automobiles, such as: the maximum speed limit of D gear (travel gear), the maximum speed limit of R gear (reverse gear), the maximum speed limit of limp mode, the maximum speed limit when the cruise control function is activated, etc. . [0003] At present, in order to improve the control accuracy of the vehicle speed, the PI torque adjustment method is generally used in the vehicle speed control. However, the current method of using PI torque adjustment to control the speed limit has the problem of large output torque fluctuations, resulting in frequent fluctuations in the vehicle speed and speed errors. larger. SUMMARY OF THE INVENTION [0004] In view of the above problems, the present invention provides a me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K31/00
CPCB60W30/18B60W50/00B60W2050/001B60W2720/40
Inventor 雷胜王孟琰
Owner BEIQI FOTON MOTOR CO LTD
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