Method and apparatus for diagnosing a cyclic system
First Claim
1. A method of determining the service life of a cyclic system comprising the steps of:
- determining at least one characteristic of the system to determine a characteristic value;
determining a cycle time of the system;
applying the at least one characteristic value to an algorithm in which the characteristic value is integrated to determine a diagnostic value; and
comparing the diagnostic value to a predetermined value to determine the operational status of the system.
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Accused Products
Abstract
A method and apparatus for determining the service life of a cyclic system the method including the steps of determining at least one characteristic of the system to determine a characteristic value and determining a cycle time of the system. The at least characteristic value is applied to an algorithm in which the characterisitic value is integrated to determine a diagnostic value, and comparing the diagnostic value to a predetermined value to determine the performance status of the system. The apparatus including a sensor for determining a system characteristic and a calculating unit operatively connected to the sensor. The calculating unit including circuitry for performing a mathematical integration on the system characteristic to determine a diagnostic value and comparing the diagnostic valve to a predetermined value to determine the performance status of the system. A notification device operatively connected to the calculating unit for indicating the operational status of the system.
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Citations
30 Claims
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1. A method of determining the service life of a cyclic system comprising the steps of:
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determining at least one characteristic of the system to determine a characteristic value;
determining a cycle time of the system;
applying the at least one characteristic value to an algorithm in which the characteristic value is integrated to determine a diagnostic value; and
comparing the diagnostic value to a predetermined value to determine the operational status of the system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of determining the service life of a cyclic fluid power system comprising the steps of:
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determining a flow rate of the fluid power system;
determining a cycle time of the system;
integrating the flow rate over the cycle time to determine a diagnostic value; and
comparing the diagnostic value to a predetermined value to determine the operational status of the system. - View Dependent Claims (15, 16, 17)
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18. A method of determining the service life of a cyclic system comprising the steps of:
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sensing a characteristic of the system to determine a characteristic value;
applying the characteristic value to a first algorithm to determine a beginning T1 and an end T2 of a cycle;
subjecting the characteristic value to a second algorithm calculated over T1 and T2 to determine a diagnostic value K; and
comparing the diagnostic value to a set of known values to determine the performance status of the system. - View Dependent Claims (19)
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20. An apparatus for determining an operational status a cyclic fluid power system comprising:
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a sensor for sensing a system characteristic;
a calculating unit operatively connected to the sensor, the calculating unit including circuitry for performing a mathematical integration on the system characteristic to determine a diagnostic value and comparing the diagnostic value to a predetermined value to determine the performance status of the system; and
a notification device operatively connected to the calculating unit for indicating the operational status of the system. - View Dependent Claims (21, 22, 23, 24, 25, 26, 28, 29, 30)
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27. A cyclic fluid power system having an operational status monitor comprising:
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a valve in fluid communication with a fluid source;
an actuator operatively connected to the valve;
a sensor for determining a system characteristic;
a calculating unit operatively connected to the sensor, the calculating unit including circuitry for performing a mathematical integration on the system characteristic to determine a diagnostic value and comparing the diagnostic value to a predetermined value to determine the performance status of the system; and
a notification device operatively connected to the calculating unit for indicating the operational status of the system.
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Specification