Diagnosis system, diagnosis method, program, and recording medium
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsKazutaka Ikeda, Kenta Kamizono, Hiroto Nakano
Life of this patent
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Abstract
A diagnosis system is configured to diagnose an apparatus including a driver device. The system includes an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device, and a determination unit configured to determine a condition of the apparatus. The determination unit is configured to obtain, based on the waveform data, a change caused by a component of a force in a particular direction applied to the driver device, and to determine the condition of the apparatus based on the obtained change. The diagnosis device determines the condition of the apparatus accurately.
Claims32
A diagnosis system configured to diagnose an apparatus including a driver device, the system comprising:
- an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device;
- a determination unit configured to
- obtain, based on the waveform data, a change caused by a component of a force in a particular direction applied to the driver device, and
- determine a condition of the apparatus based on the obtained change;
- and
- a measurement unit configured to measure the current and output the waveform data, wherein the measurement unit includes a differential type current sensor.
A diagnosis system configured to diagnose an apparatus including a driver device, the system comprising:
- an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device;
- and
- a determination unit configured to
- obtain, based on the waveform data, a change caused by a component of a force in
- a particular direction applied to the driver device, and
- determine a condition of the apparatus based on the obtained change, wherein:
- the apparatus is a work device configured to execute a predetermined work,
- the current is supplied to the driver device while the apparatus executes the predetermined work,
- the force is applied to the driver device while the apparatus executes the predetermined work,
- the driver device includes a motor including a rotor,
- the force applied to the driver device is applied to the rotor,
- the predetermined work is a machining of a workpiece by a cutting tool with a rotation about a rotation axis of one of the cutting tool and the workpiece with respect to another of the cutting tool and the workpiece,
- the motor of the driver device is configured to press one of the cutting tool and the workpiece in a direction along the rotation axis onto another of the cutting tool and the workpiece, and
- the specific direction is along the rotation axis.
A diagnosis system configured to diagnose an apparatus including a driver device, the system comprising:
- an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device;
- and
- a determination unit configured to
- obtain, based on the waveform data, a change caused by a component of a force in a particular direction applied to the driver device, and
- determine a condition of the apparatus based on the obtained change, wherein:
- the apparatus is a work device configured to execute a predetermined work,
- the current is supplied to the driver device while the apparatus executes the predetermined work,
- the force is applied to the driver device while the apparatus executes the predetermined work,
- the driver device includes a motor including a rotor,
- the force applied to the driver device is applied to the rotor,
- the predetermined work is a transporting of fluid by an impeller rotating about a rotation axis,
- the motor of the driver device is configured to rotate the impeller, and
- the specific direction intersects with the rotation axis of the impeller.
A diagnosis system configured to diagnose an apparatus including a driver device, the system comprising:
- an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device;
- and
- a determination unit configured to
- obtain, based on the waveform data, a change caused by a component of a force in a particular direction applied to the driver device, and
- determine a condition of the apparatus based on the obtained change, wherein:
- the apparatus is a work device configured to execute a predetermined work,
- the current is supplied to the driver device while the apparatus executes the predetermined work,
- the force is applied to the driver device while the apparatus executes the predetermined work,
- the driver device includes a motor including a rotor,
- the force applied to the driver device is applied to the rotor,
- the predetermined work is an attaching of a first component to a second component,
- the motor of the driver device is configured to cause the second component to approach the first component in a predetermined direction, and
- the specific direction is the predetermined direction.
A diagnosis system configured to diagnose an apparatus including a driver device, the system comprising:
- an acquisition unit configured to acquire waveform data indicating a waveform related to a current to be supplied to the driver device;
- and
- a determination unit configured to
- obtain, based on the waveform data, a change caused by a component of a force in a particular direction applied to the driver device, and
- determine a condition of the apparatus based on the obtained change, wherein:
- the apparatus is a work device configured to execute a predetermined work,
- the current is supplied to the driver device while the apparatus executes the predetermined work,
- the force is applied to the driver device while the apparatus executes the predetermined work,
- the driver device includes a motor including a rotor,
- the force applied to the driver device is applied to the rotor,
- the predetermined work is a polishing of an object with a polishing pad,
- the motor of the driver device is configured to press a dresser against the polishing pad in a predetermined direction, and
- the specific direction is the predetermined direction.
Dependencies are inferred from the claim text.