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Automobile transmission rack endurance test operation state monitoring method

A technology of automobile transmission and durability test, applied in the direction of machine gear/transmission mechanism testing, etc., can solve the problems of complex transmission operating conditions and difficult monitoring, and achieve the effect of reducing the number of false alarms, improving safety, and improving accuracy

Inactive Publication Date: 2014-01-01
CHONGQING ACADEMY OF SCI & TECH
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  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies in the above-mentioned prior art, the present invention provides an automobile transmission bench durability test that solves the problems of complex transmission operating conditions and difficult monitoring, reduces the number of false alarms in the monitoring system, and improves the accuracy of system monitoring. Operation Status Monitoring Method

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  • Automobile transmission rack endurance test operation state monitoring method
  • Automobile transmission rack endurance test operation state monitoring method
  • Automobile transmission rack endurance test operation state monitoring method

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Embodiment Construction

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] According to the specific requirements of the state monitoring of the endurance bench test of the automobile transmission, the test technologies such as the gear position, speed, torque, temperature and vibration signal during the performance test of the automobile transmission are analyzed, and the hardware required for the test system such as the speed pulse sensor and the torque sensor are selected. , temperature sensor and vibration acceleration sensor, industrial computer, data acquisition card, etc., using the order analysis method to overcome the "frequency ambiguity" of the variable speed movement in the traditional frequency analysis, and solve the key to the frequency domain characteristic signal extraction of the transmission technical problem. In view of the complexity of the operating conditions of the monitoring o...

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Abstract

The invention discloses an automobile transmission rack endurance test operation state monitoring method. The automobile transmission rack endurance test operation state monitoring method includes the following steps that firstly, all sorts of signals are obtained; secondly, a rotation speed impulse signal, a torque voltage signal, a vibration acceleration signal and a gear acceleration signal are processed and then input into a data collector to be converted into digital signals which are input into a computer; thirdly, all monitoring zones are divided; fourthly, the computer performs angular domain recollection by means of the input signals to obtain an order spectrum; fifthly, self-learning reference spectral line generation of all the monitoring zones is performed; sixthly, the real-time order spectrum obtained through angular domain recollection is compared with a reference spectrum, if a preset value is exceeded, an alarming order is started. According to the automobile transmission rack endurance test operation state monitoring method, zone division is performed on gears, rotation speeds, torque and oil temperature parameters, self-learning can be performed on all the monitoring zones to generate a reference order spectral line. The problem that a transmission is complicated in operation conditions and difficult to monitoring is solved. The frequency of faulted alarming of a monitoring system is reduced and monitoring accuracy of the system is improved.

Description

technical field [0001] The invention relates to a method in the technical field of state monitoring, in particular to a method for realizing online monitoring of the running state of a transmission bench test. Background technique [0002] Automobile transmission is an important component in its transmission system. Both transmission manufacturers and transmission appraisal units hope to accurately determine the life of the transmission through tests. . It is very important to strictly guarantee the test conditions, so in the test process, the monitoring process is necessary. There are many types of faults during the test, and the occurrence of faults is very random, which brings great difficulties to the judgment of the test personnel. During the test, there may be a large area of ​​damage to the transmission due to local problems. For example, broken teeth are a frequent phenomenon during the test. After a tooth of the tested transmission gear is broken, if the machine i...

Claims

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Application Information

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IPC IPC(8): G01M13/02
Inventor 李文礼易鹏余勇刘万伟许传贺
Owner CHONGQING ACADEMY OF SCI & TECH
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