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A hardware-in-the-loop simulation test platform and test method for a high-power tractor electro-hydraulic suspension system

A semi-physical simulation and test platform technology, applied in the field of high-power tractor performance testing, can solve the problems of high use and maintenance costs, large investment and long cycle, and achieve the effect of optimal design

Inactive Publication Date: 2016-03-23
CHINA AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] The development and testing of the traditional tractor electro-hydraulic suspension system is based on real vehicles and benches, with complex structure, large investment, long cycle, high use and maintenance costs, especially the key components of high-power tractors with higher parameter requirements especially so

Method used

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  • A hardware-in-the-loop simulation test platform and test method for a high-power tractor electro-hydraulic suspension system
  • A hardware-in-the-loop simulation test platform and test method for a high-power tractor electro-hydraulic suspension system
  • A hardware-in-the-loop simulation test platform and test method for a high-power tractor electro-hydraulic suspension system

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Embodiment

[0020] Due to the strong nonlinear characteristics of the dynamic control of the hydraulic system, the present invention is difficult to simulate through a mathematical model, so it adopts entity construction; taking the dynamic performance test of the distributor under the slip rate adjustment mode during plowing as an example, the specific implementation method is as follows:

[0021] (1) Modeling of load characteristics during plowing operations. The traction balance equation of the tractor under flat conditions is shown in formula (1),

[0022] f K =F T +F f =Z·b 0 h 0 k 0 ·n+f·G(1)

[0023] where F K ——the total driving force of the tractor, N;

[0024] f T — tractor traction resistance, N;

[0025] f f — tractor running resistance, N;

[0026] Z—the number of plowshares in a single row;

[0027] b 0 ——the width of single plowshare, m;

[0028] h 0 ——plowing depth, m;

[0029] k 0 ——Soil specific resistance, N / m 2 , vary according to the road conditions...

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Abstract

The invention discloses a semi-physical simulation test platform of a high-power tractor electro-hydraulic suspension system and belongs to the field of performance test of a high-power tractor. A simulation test system comprises an entity part and a virtual part which are connected with each other through an interface part to form a semi-physical simulation test system for the high-power tractor and a suspension agricultural machinery part. Working parameters of the entity part are input into a computer through an interface board card to be used by a model; output parameters of the model are output to the entity part through the interface board card; and therefore, a closed loop test system is formed. A lifting valve and a controller which are related in the invention are subjected to real-time simulation, test, evaluation and improvement; and the overall working performance and the fuel economical property of the tractor and the working quality and the working efficiency of a set are comprehensively checked. By different types of control software, the development periods of the high-power tractor and parts and the controller which are suspended on the high-power tractor can be simplified; and the development cost is reduced.

Description

technical field [0001] The invention belongs to the field of performance testing of high-power tractors, in particular to a semi-physical simulation test platform of an electro-hydraulic suspension system of high-power tractors. Specifically, it is about the research and development, production and performance test simulation test system of key components of high-power tractors. Background technique [0002] The development and testing of the traditional tractor electro-hydraulic suspension system is based on real vehicles and benches, with complex structure, large investment, long cycle, high use and maintenance costs, especially the key components of high-power tractors with higher parameter requirements This is especially true. [0003] Using semi-physical simulation technology, some systems in the high-power tractor test bench are replaced by software, and with the help of mathematical models, the joint simulation of real-time mathematical simulation and physical simula...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M17/04
Inventor 谢斌毛恩荣宋正河朱忠祥迟瑞娟娄秀华
Owner CHINA AGRI UNIV
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