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Loading force verifying method for rack eddy current dynamometer

A technology of eddy current machine and verification method, which is applied in the direction of machine/structural component testing, measuring devices, instruments, etc., can solve problems such as difficult effective verification, and achieve the effect of improving efficiency, ensuring accuracy and authenticity

Active Publication Date: 2013-01-16
苏州科弗曼机械有限公司
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AI Technical Summary

Problems solved by technology

[0002] When the vehicle is tested for various performances under the load condition of the eddy current machine chassis dynamometer, in order to prevent artificial modification of the loading force, ensure that the equipment is in good condition, and ensure standardized testing, the regulatory department needs to verify the loading force. The existing verification technology There are usually two ways: one way is to directly receive the detection loading force transmitted by the computer of the testing station; the other way is to read the data processed by the single-chip microcomputer; both ways may modify the data through the computer or single-chip microcomputer, which is difficult to be effective verify

Method used

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Examples

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Effect test

Embodiment Construction

[0011] The specific implementation of the verification method for the loading force of the bench electric eddy current machine is illustrated by taking the three performance tests of exhaust gas emission, power performance and fuel economy as examples. First, the force sensor is calibrated to determine the force coefficients of the two systems.

[0012] (1) According to the national standard GB18285-2005 "Limits and Measurement Methods of Exhaust Pollutants from Ignition Engine Vehicles (Double Idling Method and Simple Working Condition Method"), the passenger car with a reference mass of 1230kg is tested in ASM5025 When the vehicle speed is steady at 25km / h, the total load power of the chassis dynamometer is 1230 / 148=8.31kW, and the total load force is 8.31×3600 / 25=1196.6N, minus 25km / h bench resistance 86.4 N, then the specified loading force of the eddy current machine is 1196.6-86.4=1110.2N. The verification computer needs to receive the specified loading force or calculat...

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Abstract

The invention provides a loading force verifying method for a rack eddy current dynamometer, a signal processing system for a force sensor and a verification computer are additionally arranged on a chassis dynamometer of the existing rack eddy current dynamometer, the calculating loading force of the verification computer is taken as a truth value, and when a bigger error exists in the corresponding detected loading force relative to the loading force truth value, or a bigger error exists in the loading force truth value relative to the prescribed loading force, the verification detection is nonstandard or the equipment is in failure, so that the accuracy and authenticity of various performance detection loaded on the chassis dynamometer through the vehicle can be guaranteed, and the advantages of accuracy, simplicity, convenience, quickness and low price are realized.

Description

technical field [0001] The verification method of the loading force of the bench eddy current machine is to prevent the irregularity of the single-chip microcomputer and computer, supervise the integrity of the equipment, and verify the bench The invention discloses a method for detecting loading force by an eddy current machine, which belongs to the technical field of vehicle performance bench test detection, supervision and verification. Background technique [0002] When the vehicle is tested for various performances under the load condition of the eddy current machine chassis dynamometer, in order to prevent artificial modification of the loading force, ensure that the equipment is in good condition, and ensure standardized testing, the regulatory department needs to verify the loading force. The existing verification technology There are usually two ways: one way is to directly receive the detection loading force transmitted by the computer of the testing station; the o...

Claims

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Application Information

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IPC IPC(8): G01M17/007
Inventor 吴明
Owner 苏州科弗曼机械有限公司
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