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Data acquisition method for automatic transmission offline test system

A technology of automatic transmission and test system, which is applied in the direction of machine gear/transmission mechanism testing, etc., can solve the problem of uncertainty of sensor sampling frequency, and achieve the effect of smooth and stable detection data, obvious correlation, and saving computing resources.

Inactive Publication Date: 2020-02-21
SHANGHAI W IBEDA HIGH TECH DEV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of data acquisition method for automatic transmission off-line testing system according to above-mentioned inadequacy of prior art, this method solves the problems of prior art by converting and synchronizing the monitoring signal signals of each sensor. The problem that the sampling frequency of some sensors in the middle is uncertain

Method used

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  • Data acquisition method for automatic transmission offline test system
  • Data acquisition method for automatic transmission offline test system
  • Data acquisition method for automatic transmission offline test system

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Embodiment 1

[0037] Embodiment 1: as figure 1 As shown, this embodiment specifically relates to a data collection method for an automatic transmission off-line test system. The automatic transmission off-line test system is used for the off-line test of the automatic transmission (AT transmission). The automatic transmission off-line test system includes the off-line test bench 1 and the measurement and control equipment 2 .

[0038] The end-of-line test bench 1 is used to carry the automatic transmission 3 to be tested. The end-of-line test bench 1 includes an input motor 4 and two output motors 5 . The input motor 4 is used to connect to the input shaft of the automatic transmission 3 , and the two output motors 5 are respectively connected to the two output shafts of the automatic transmission 3 . The input motor 4 is used to drive the automatic transmission to rotate, and the output motor 5 is used to simulate the load of the output shaft. The off-line test bench 1 is provided with ...

Embodiment 2

[0070] Embodiment 2: The main difference between this embodiment and Embodiment 1 is that the method used for determining the stability of the oil pressure is different. In this embodiment, the industrial computer 12 of the measurement and control device 2 performs a stability determination that specifically includes the following steps:

[0071] (1) Select several continuously acquired detection data from the detection data of the oil pressure sensor 10 to form the oil pressure detection data set {Xi}; in this embodiment, the oil pressure detection data set {Xi} includes 20 continuously acquired Test data;

[0072] (2) Determine whether the oil pressure is stable through the oil pressure detection data set {Xi}; in this process, record the first acquired detection data X1 in the oil pressure detection data set {Xi} as the initial value, if the oil pressure detection If each detection data Xi in the data set {Xi} is within the range of (a1, a2) and within the range of (X1+b1, ...

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Abstract

The invention discloses a data acquisition method for an automatic transmission offline test system. The automatic transmission offline test system comprises an offline test bench and a measurement and control device; the measurement and control device is electrically connected with the sensors of the offline test bench and the sensor of an automatic transmission; in the process of testing the automatic transmission, the measurement and control device converts and synchronizes signals outputted by the sensors at preset intervals, so that the detection data of the sensors can be obtained; the sensors of the offline test bench comprise oil pressure sensors; and the measurement and control device performs stability judgment on the detection data of the oil pressure sensors to obtain an oil pressure stability judgment result. According to the data acquisition method for the automatic transmission offline test system of the invention, the signals outputted by the sensors are converted and synchronized, so that the detection data of the sensors are smooth and stable and do not need extra filtering and smoothing.

Description

technical field [0001] The invention relates to an automatic transmission off-line test system, in particular to a data collection method for the automatic transmission off-line test system. Background technique [0002] At present, AT transmission factory off-line testing adopts a highly integrated automated test bench, as long as the assembled transmission is transported to the bench through the roller table, and after clamping and docking, the bench performs the test according to the set automatic program. The AT transmission realizes its functions through the external TCU (Transmission Control Unit). Currently, there are two main types of AT transmissions in the AT transmission offline test, one is the AT transmission with TCU, and the other is the AT transmission without TCU. The AT transmission with TCU can directly use CAN for communication test. This form allows the AT transmission to leave the factory directly after the test, saving production man-hours. However, it...

Claims

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Application Information

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IPC IPC(8): G01M13/02
CPCG01M13/02
Inventor 沈建强卢寅生严早卓
Owner SHANGHAI W IBEDA HIGH TECH DEV
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