Vehicle vertical load and road surface gradient estimation system and estimation method thereof

A technology for vertical loads and slopes, applied in the direction of measuring inclinations, measuring devices, instruments, etc.

Active Publication Date: 2019-03-19
鸿运汽车有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In view of this, it is necessary to provide a vehicle vertical load and road slope estimation system and its estimation method for the existing problems

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  • Vehicle vertical load and road surface gradient estimation system and estimation method thereof
  • Vehicle vertical load and road surface gradient estimation system and estimation method thereof
  • Vehicle vertical load and road surface gradient estimation system and estimation method thereof

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Embodiment Construction

[0045] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0046] It should be noted that if there are directional indications such as up, down, left, right, front, back... If the relative positional relationship, movement conditions, etc. between the components change, the directional indication will also change accordingly.

[0047]In addition, if there are descriptions involving "first", "second" and so on in the embodiments of the present invention, the descriptions of "first", "second" and so on are only...

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Abstract

The invention discloses a vehicle vertical load and road surface gradient estimation system and an estimation method thereof. The system comprises current signal acquisition units, a current signal receiving unit, a wheel speed sensor, an acceleration sensor and a microprocessor, wherein four current signal acquisition units are respectively embedded in tire surfaces of four wheels of vehicles tires; the current signal acquisition unit and the current signal receiving unit are in wireless connection; and an output end of the current signal receiving unit, the output end of the wheel speed sensor and the output end of the acceleration sensor are connected with an input end of the microprocessor. Compared with the prior art, the vertical load and road surface gradient estimation system and the estimation method thereof have the advantages that the vehicle vertical load and the road surface gradient are effectively estimated based on a principle of Kalman filtering and a least square method by means of the positive piezoelectric effect of a power generation crystal.

Description

technical field [0001] The invention relates to the technical field of vehicle state estimation, in particular to a vehicle vertical load and road slope estimation system and an estimation method thereof. Background technique [0002] The vertical load of the vehicle and the slope of the road have always been important vehicle state quantities, which are related to the control accuracy of the vehicle control system. Vertical load is related to road slope, longitudinal acceleration and lateral acceleration, etc. It is difficult to estimate both vertical load and road slope accurately by relying on traditional sensors. [0003] In order to solve this problem, the present invention involves an estimation method for estimating vertical load and road surface gradient based on the principle of Kalman filter and least square method with the help of the positive piezoelectric effect of the power generation crystal. Contents of the invention [0004] In view of this, it is necessa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G19/03G01C9/10
CPCG01C9/10G01C2009/102G01G19/035
Inventor 恽航蒋迁欢
Owner 鸿运汽车有限公司
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