Method of evaluating the efficiency of an automatic machine
AssigneeG. D. Societa per Azioni
InventorsAntonio Valentini, Fiorenzo Draghetti
Life of this patent
Estimating the term…
Abstract
A method of evaluating the efficiency of an automatic machine, whereby, upon completion of a given production lot, a current performance index achieved by the automatic machine during manufacture of the production lot is calculated; and the current performance index is memorized in a nonvolatile memory, together with various characteristic parameters relating to the processing performed. To evaluate the efficiency of the automatic machine, the current performance index is compared with historic performance indexes memorized previously during operation of the automatic machine and having characteristic parameters substantially similar to the characteristic parameters of the current performance index.
Claims29
A method of evaluating the efficiency of an automatic machine for processing articles (2) grouped into a succession of production lots;
- the method comprising the steps of:
- calculating, upon completion of a production lot, a current performance index (I) of the automatic machine (1) achieved during production of said production lot;
- memorizing the current performance index (I) in a nonvolatile memory, together with various characteristic parameters relating to the processing of said production lot;
- finding in the nonvolatile memory at least one historic performance index (I) memorized beforehand during operation of the automatic machine (1) and having characteristic parameters similar to the characteristic parameters of the current performance index (I);
- and
- evaluating the efficiency of the automatic machine (1) by comparing the current performance index (I) only with the historic performance index (I) having characteristic parameters similar to the characteristic parameters of the current performance index (I).
A method of evaluating the efficiency of an automatic machine comprising a number of operating components (7) and for producing articles (2) from raw materials (8) supplied at the input;
- the method comprising the steps of:
- calculating a numeric estimate of the state of an automatic machine (1);
- estimating an indicator of the quality of the articles (2) produced,
- estimating an indicator of the productivity of the automatic machine (1),
- estimating an indicator of a state of the operating components (7) of the automatic machine (1) by calculating a weighted average of the indicators of the state of each said operating component (7);
- and
- calculating said numeric estimate of the state of the automatic machine (1) by calculating a weighted average of the indicator of the quality of the articles (2) produced, of the productivity indicator, and of the indicator of the state of the operating components (7).
Dependencies are inferred from the claim text.