Web Break Analysis System and Method and Corresponding Printing Press
First Claim
1. A system for analyzing web breaks in a web-fed printing press including a plurality of sensing devices adapted to monitor properties of a web and operating parameters of the printing press, as well as to detect a web break, the system comprising;
- a database with a list of predetermined web break causes;
for each of the predetermined web break causes, a real cause probability calculation algorithm for calculating a probability that the corresponding predetermined web break cause is a real cause of a detected web break at least partially as a function of outputs delivered by the sensing devices; and
a real web break cause determining processor adapted to, upon detection of a web break;
a) execute each real cause probability calculation algorithm;
b) rank the predetermined web break causes according to the respective calculated real cause probabilities; and
c) identify the one or several web break causes among the predetermined web break causes with the highest real cause probability as the most likely cause for the detected web break.
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Abstract
A system for analyzing web breaks in a printing press is provided. The system includes sensing devices for monitoring the web, the printing press and detecting a web break. The system includes a database with predetermined web break causes, a real cause probability calculation algorithm for calculating the probability that the corresponding predetermined web break cause is the real cause of a detected web break as a function of the outputs of the sensing devices and a real web break cause determining processor for executing each real cause probability calculation algorithm. The predetermined web break causes are ranked according to the calculated real cause probabilities, and the web break cause among the predetermined web break causes with the highest real cause probability as the cause for the detected web break is identified. A web printing press and method are also provided.
17 Citations
15 Claims
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1. A system for analyzing web breaks in a web-fed printing press including a plurality of sensing devices adapted to monitor properties of a web and operating parameters of the printing press, as well as to detect a web break, the system comprising;
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a database with a list of predetermined web break causes; for each of the predetermined web break causes, a real cause probability calculation algorithm for calculating a probability that the corresponding predetermined web break cause is a real cause of a detected web break at least partially as a function of outputs delivered by the sensing devices; and a real web break cause determining processor adapted to, upon detection of a web break; a) execute each real cause probability calculation algorithm; b) rank the predetermined web break causes according to the respective calculated real cause probabilities; and c) identify the one or several web break causes among the predetermined web break causes with the highest real cause probability as the most likely cause for the detected web break. - View Dependent Claims (2, 3, 4, 5, 6, 12, 13, 14)
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7. A method for analyzing web breaks in a web-fed printing press, comprising the steps of:
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providing a list of predetermined web break causes; monitoring web properties and printing press operating parameters in said web-fed printing press; detecting a web break in said web-fed printing press; calculating for each of the predetermined web break causes the probability that the corresponding predetermined web break cause is a real cause of the detected web break at least partially based on the results of said monitoring; ranking the predetermined web break causes according to the calculated real cause probabilities; and identifying one or several web break causes among the predetermined web break causes with the highest real cause probability as the most likely cause for said detected web break. - View Dependent Claims (8, 9, 10, 11, 15)
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Specification