A vehicle online weighing method and system
A vehicle and weighing technology used in weighing, machine/structural component testing, static/dynamic balance testing, etc., to solve the problems of low evaluation efficiency and poor versatility of weighing systems
Active Publication Date: 2020-06-09
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0003] The purpose of the present invention is to provide a vehicle online weighing method and system to solve the problems of low evaluation efficiency and poor versatility of traditional weighing systems
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[0047] 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 some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0048] The purpose of the present invention is to provide an online vehicle weighing method and system, which can improve the evaluation efficiency of the vehicle weighing system, and make the weighing system widely applicable to different types of vehicles.
[0049] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the acc...
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The invention discloses a method and system for online weighing of vehicles. The weighing method includes the following steps that: when a vehicle is stationary on a road having the slope, force analysis is performed on the vehicle and a rear wheel torque balance relationship, a front wheel torque balance relationship, and an overall vehicle torque balance relationship are established; when the vehicle is in a no-load state, a vehicle no-load center-of-mass position is determined based on the overall vehicle torque balance relationship; a vehicle no-load center-of-mass vertical position is determined based on the vehicle no-load center-of-mass position; a weighing linear model is determined based on the vehicle no-load center-of-mass position, the vehicle no-load center-of-mass vertical position, the rear wheel torque balance relationship, the front wheel torque balance relationship, and the overall vehicle torque balance relationship; parameter identification is carried out on the weighing linear model by using a least square method and the overall vehicle mass is determined. With the disclosed weighing method and system, the evaluation efficiency of the vehicle weighing system isimproved; and the weighing system can be widely applied to different types of vehicles.
Description
technical field [0001] The invention relates to the field of online weighing of vehicles, in particular to a method and system for online weighing of vehicles. Background technique [0002] Vehicle material loading varies between 0 and 236 tons. Whether it is intelligent driving motion control technology research or actual engineering needs, the mass of the vehicle is an indispensable physical quantity. In engineering, the accuracy of mass estimation is generally required to be within 5%. There are static estimation method and dynamic estimation method for the estimation of vehicle mass; dynamic estimation method usually establishes longitudinal dynamic model or vertical dynamic model, and establishes longitudinal dynamic model by obtaining vehicle engine speed and torque, using Real-time estimation of vehicle mass and road slope angle by least squares method. It is also possible to estimate the sprung mass of the vehicle in real time by establishing a vertical dynamic mode...
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IPC IPC(8): G01G19/02G01M1/12
CPCG01G19/02G01M1/12
Inventor 王向周郑戍华赵莎莎张宁宁
Owner BEIJING INSTITUTE OF TECHNOLOGYGY