| 摘要 |
#CMT# #/CMT# The method involves computing a model size e.g. model output size and model output pressure, based on a condition of a hydraulic machine (2) e.g. axial piston machine, by a computing device e.g. microcomputer (8), and/or storage device. The computed model size is compared with a corresponding measured variable e.g. input variable such as input pressure (Pi), and output variable such as output pressure (Po), of the hydraulic machine by the computing device for producing a reference size. The reference size is evaluated by an evaluating unit (22) to diagnose error of the machine. #CMT# : #/CMT# An independent claim is also included for a device for diagnosing a condition of a hydraulic machine, with a measuring device. #CMT#USE : #/CMT# Method for diagnosing an abnormal condition of a hydraulic machine i.e. axial piston machine (claimed). Can also be used for a rotary machine. #CMT#ADVANTAGE : #/CMT# The method automatically detects the variations of the hydraulic machine from the normal condition using the computing device, so that the abnormal condition of the hydraulic machine can be diagnosed in a simple manner, and hence avoiding damages to a defective piston and a defective slide shoe of the machine in a safe and reliable manner. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic signal flow and block representation of a method for diagnosing an abnormal condition of a hydraulic machine. Pi : Input pressure Po : Output pressure 2 : Hydraulic machine 8 : Microcomputer 14 : Simulation unit 22 : Evaluation unit. |
