Dynamometer for automobile chassis and measurement and control method thereof

A technology of automobile chassis and dynamometer, applied in power measurement, measuring device, vehicle testing, etc., can solve the problems of difficult vehicle dynamic evaluation, unstable test data, poor reliability, etc., and achieve accurate measurement and control. , Simple structure, low cost effect

Inactive Publication Date: 2009-11-18
QIANHAI CHINESE ACADEMY OF SCI COOPERATION INTEGRITY COOPERATION TECH SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the shortcomings of existing chassis dynamometers and control measurement methods, such as unstable detection data, low accuracy, poor reliability, difficulty in making a correct evaluation of the dynamic performance of the vehicle, and the inability to realize dynamic detection To provide a vehicle chassis dynamometer and control measurement method with stable detection data, high accuracy, good reliability, and compatibility with dynamic detection and emission detection functions

Method used

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  • Dynamometer for automobile chassis and measurement and control method thereof
  • Dynamometer for automobile chassis and measurement and control method thereof
  • Dynamometer for automobile chassis and measurement and control method thereof

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Experimental program
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Embodiment 1

[0025] Such as figure 1 As shown, the automobile chassis dynamometer includes a frame 10, an anti-dragging motor 11, and an eddy current machine 12. A pair of linked driving rollers 13 and driven rollers 14 are arranged on the frame 10, and the driving roller 13 and the driven roller 14 The length of the car is greater than 2.5 meters, so that the left and right wheels of the car can rotate on the roller at the same time to simulate driving on the road. The diameter of the roller depends on the type of vehicle tested. The diameter of the roller used for car measurement is 218mm; for heavy-duty Car measurements mostly use 370-420 mm. The two ends of the driving drum 13 and the driven drum 14 are respectively connected to the frame 10 through bearings 15, and the two ends of the driving drum 13 are respectively connected with the rotating shafts of the eddy current machine 12 and the anti-dragging motor 11 through a coupling 16. A lift plate 19 is provided between the driving d...

Embodiment 2

[0031] The present embodiment provides the control measurement method of automobile chassis dynamometer, such as Figure 4 As shown, the control system of the automobile chassis dynamometer adopts a structure in which the loading controller and the indicating controller are separated. The dynamometer is controlled in multiple modes (simulation of road driving resistance, constant speed, constant force, constant power, maximum power dynamic scanning, load coasting), and collects various parameters. The interface guidance control adopts a general industrial control computer (PC), each The task is clear and the control time is guaranteed.

[0032] The control system of the chassis dynamometer adopts a closed-loop feedback control system, which adjusts the magnitude of the loading current according to the feedback of the difference between the measured value and the target value of the adjusted parameter (speed, torque), and performs PID adjustment control. The PID parameters are...

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Abstract

The invention relates to a dynamometer for an automobile chassis, aiming at solving the shortages that the existing dynamometer for the chassis has unstable detection data, low accuracy and poor reliability, is difficult to correctly evaluate the power performance of the vehicle and the like, and the defects that the dynamometer can not realize the compatibility of power performance detection function and emission inspection function. The invention provides a dynamometer for the automobile chassis, comprising a stander, an anti-drag motor, an eddy current machine, a force measurement sensor and a speed sensor arranged on the eddy current machine, and a pair of driving roller and driven roller linked to each other; two ends of the driving roller and the driven roller are rotatablely connected on the stander by a bearing respectively; the driving roller is connected with the eddy current machine and the anti-drag motor; and the force measurement sensor adopts a dual-range sensor. The invention provides a measurement and control method for the dynamometer used for the automobile chassis. The dynamometer for automobile chassis and the measurement and control method thereof have stable detection data, high accuracy and good reliability and can realize the compatibility of the power performance detection function and emission inspection function.

Description

technical field [0001] The invention relates to an automobile testing device, more specifically, to an automobile chassis dynamometer and a measurement control method thereof. Background technique [0002] The automobile chassis dynamometer is one of the most important automobile bench testing equipment, which is used for the overall inspection of the technical condition in automobile engineering. To simulate the road running conditions of the car on the test bench, it is first necessary to accurately simulate the motion inertia force and driving resistance of the whole car. The bench resistance is the internal resistance that exists when the chassis dynamometer bench transmits force. It is mainly composed of the mechanical resistance caused by the mechanical friction of the moving parts in relative motion. It is the mechanical resistance of the bench itself and has nothing to do with the vehicle model. The magnitude of the internal resistance and its relative stability hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/24G01L5/13G01M17/007
Inventor 马强骏
Owner QIANHAI CHINESE ACADEMY OF SCI COOPERATION INTEGRITY COOPERATION TECH SHENZHEN CO LTD
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