Result Causes of dysfunction of PICC included staxis around stoma(38.4%),catheter blockage(26.0%),catheter displacement(13.7%),catheter defluxion(9.6%),extubation(8.2%) and local infection(4.1%).
The diagnosis principle and diagnosability conditions are proposed, and the normal tolerance network test nede voltage interval are given by interval iterative algorithm.
Some common troubles such as poor throwing power,burnt deposit on rim,dull gray coating,piebaldism,blue film,hazy deposit,spongy surface and roughness in decorative chromium plating were summarized.
Based on this, the veracity of the rotor fault diagnosis can be improved through the distance of the information entropy curve chart at the multispeed.
With the lucubrate research of fault mechanism, according to the domino theory and ICAO, to bring forward the idea of electric power system fault chain.
By means of ballistic pulsimeter operation of recent years, the relative wealth of experimence is accumulated. The better effect in bearing failure detection is obtained simultaneously.
In order to further discuss the identification of fault after the detection, a nonlinear online neural network approximator is used to provide an estimate of the fault.
The branch system of safeguard, the design of alarm, interlock and shutdown, can ensure the safety of plant and its circumambience and reduce the lost of fault.