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Fault diagnosis device and method for hydraulic sensor of hydraulic gearbox

A fault diagnosis device and hydraulic sensor technology, which is applied in the field of hydraulic gearboxes, can solve problems such as control failure, untimely control of electric drive gearbox systems, hardware damage, etc., and achieve the effect of avoiding damage

Active Publication Date: 2017-06-13
SAIC MOTOR
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  • Abstract
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Problems solved by technology

In the automatic control of the electric drive transmission system of hybrid electric vehicles, the oil pressure value of the hydraulic circuit is a crucial input parameter. If the hydraulic sensor cannot accurately monitor and reflect the pressure value of the oil pressure system, it is very likely that the entire vehicle will be damaged. The control of the electric drive gearbox system is not timely, or even the control fails, resulting in hardware damage

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  • Fault diagnosis device and method for hydraulic sensor of hydraulic gearbox
  • Fault diagnosis device and method for hydraulic sensor of hydraulic gearbox
  • Fault diagnosis device and method for hydraulic sensor of hydraulic gearbox

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Embodiment Construction

[0057] The following introduces some of the possible embodiments of the present invention, which are intended to provide a basic understanding of the present invention, but are not intended to identify key or decisive elements of the present invention or limit the scope of protection. It is easy to understand that, according to the technical solution of the present invention, those skilled in the art may propose other alternative implementation manners without changing the essence and spirit of the present invention. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as the entirety of the present invention or as a limitation or restriction on the technical solution of the present invention.

[0058] The applicant found that the existing diagnosis of the hydraulic sensor mainly focuses on the primary diagnosis of the hydraulic sensor, for example, whether there...

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Abstract

The invention provides a fault diagnosis device for a hydraulic sensor of a hydraulic gearbox and a method thereof, belonging to the technical field of hydraulic gearboxes. In the fault diagnosis device and the method thereof, the fault diagnosis is performed for each of the first, second and third operating conditions, respectively, and the faults corresponding to at least any one of the operating conditions are diagnosed. When the hydraulic pressure sensor is monitored as abnormal during the diagnosis, it is determined that the hydraulic pressure sensor is faulty. Therefore, it is accurate and effective and can realize the real-time monitoring and diagnosis of the rational fault diagnosis of the hydraulic sensor.

Description

technical field [0001] The invention belongs to the technical field of hydraulic gearboxes, and relates to a fault diagnosis device for a hydraulic sensor of a hydraulic gearbox and a fault diagnosis method thereof. Background technique [0002] In the hydraulic system of the hydraulic transmission, it is often necessary to feed back the hydraulic parameters of the hydraulic circuit in real time, so as to realize the control of the hydraulic system and ensure its normal operation. Therefore, one or more hydraulic pressure sensors are usually arranged on the hydraulic circuit of the hydraulic system to measure the pressure value at its location. If the hydraulic sensor fails (such as inaccurate measurement), it will directly affect the operation of the hydraulic system. Therefore, it is necessary to carry out real-time fault diagnosis on the hydraulic sensor (especially the key hydraulic sensor) in real time. [0003] Taking the electric drive gearbox of a hybrid vehicle as ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01L27/00
Inventor 冷宏祥马成杰严洪江黄海文
Owner SAIC MOTOR