Fault diagnosis apparatus
First Claim
1. A fault diagnosis apparatus for diagnosing a fault that occurs in an apparatus having a drive mechanism including a plurality of elements that include a driving component activated by current supply and a power transmission component that transmits a driving force of the driving component to another component, comprising:
- a first signal detection unit that detects a first signal indicating an operation state of the drive mechanism within a predetermined period; and
a fault diagnosis unit that executes a fault diagnosis on each element of the drive mechanism based on a deviation of the first signal detected by the first signal detection unit from a normal range.
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Accused Products
Abstract
A fault diagnosis section activates a driving component alone, measures an operation state signal and a paper passage time, and stores feature values (Vm, ov, Tqs, ots) extracted as a determination reference in a storage medium. A paper passage fault determination section determines whether or not a fault has arisen on the basis of the paper passage time when an apparatus is under normal operating conditions. A diagnosis target block determination section determines an order to operate a detail fault diagnosis when it is determined that there is a plurality of diagnosis target blocks. When the driving component is activated alone under actual operation conditions, the operation state signal Vf is obtained, and an operation state fault determination section conducts diagnosis on whether or not a fault has arisen on the driving component and a state of the fault, and whether or not a fault has arisen on other power transmission components and a nature of fault with reference to the feature values as the determination reference on the basis of a degree of deviation from a normal range.
35 Citations
18 Claims
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1. A fault diagnosis apparatus for diagnosing a fault that occurs in an apparatus having a drive mechanism including a plurality of elements that include a driving component activated by current supply and a power transmission component that transmits a driving force of the driving component to another component, comprising:
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a first signal detection unit that detects a first signal indicating an operation state of the drive mechanism within a predetermined period; and a fault diagnosis unit that executes a fault diagnosis on each element of the drive mechanism based on a deviation of the first signal detected by the first signal detection unit from a normal range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification