Multi-channel vibration analyzer
First Claim
1. A tool for measuring and analyzing the torsional vibration in a vehicle driveline, comprising:
- a plurality of moveable sensors, including a first sensor at a first location and a second sensor at a second location, for measuring an instantaneous speed at a driveline location and generating a plurality of speed signals, including a first speed signal from said first sensor and a second speed signal from said second sensor, and wherein a plurality of moveable sensor locations, including said first location and said second location, are defined according to a setup attribute;
a processor electrically coupled to said plurality of sensors for receiving said plurality of speed signals from said plurality of sensors and for transforming said plurality of speed signals into order domain and for processing said plurality of speed signals into rotational acceleration measurements as a function of harmonic order, said processing including calculating the amplitudes of said rotational acceleration measurements at each of one or more rotational orders; and
display means for displaying said amplitudes of said rotational acceleration measurements with their respective rotational orders.
1 Assignment
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Accused Products
Abstract
A diagnostic vibration analyzing system and method for measuring and characterizing the torsional vibrations in a vehicle or a piece of industrial equipment (collectively a “vehicle”). An electronic control unit and sensor cooperate to measure speed fluctuations occurring between the passing of adjacent teeth of a rotating gear. These time measurements are the basis for displacement, velocity and acceleration calculations which, combined with driveshaft rotational order information, can be used to pinpoint the source of excessive driveline torsional vibrations. The use of multiple sensors can maximize per test the information available for analysis. The use of multiple sensors in a substantially simultaneous manner can isolate particular components in the tested vehicle.
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Citations
28 Claims
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1. A tool for measuring and analyzing the torsional vibration in a vehicle driveline, comprising:
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a plurality of moveable sensors, including a first sensor at a first location and a second sensor at a second location, for measuring an instantaneous speed at a driveline location and generating a plurality of speed signals, including a first speed signal from said first sensor and a second speed signal from said second sensor, and wherein a plurality of moveable sensor locations, including said first location and said second location, are defined according to a setup attribute;
a processor electrically coupled to said plurality of sensors for receiving said plurality of speed signals from said plurality of sensors and for transforming said plurality of speed signals into order domain and for processing said plurality of speed signals into rotational acceleration measurements as a function of harmonic order, said processing including calculating the amplitudes of said rotational acceleration measurements at each of one or more rotational orders; and
display means for displaying said amplitudes of said rotational acceleration measurements with their respective rotational orders. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A vibration analysis system for a vehicle, comprising:
- an acquisition subsystem, including;
a plurality of sensors comprising a first sensor and a second sensor;
a plurality of moveable sensor locations comprising a first location and a second location;
a plurality of sensor measurements comprising a first measurement and a second measurement, wherein said first measurement is captured by said first sensor at said first location and wherein said second measurement is captured by said second sensor at said second location;
a setup subsystem for identifying said plurality of moveable sensor locations according to a setup attribute; and
an analysis subsystem for calculating a vibration attribute from said plurality of sensor measurements. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
- an acquisition subsystem, including;
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25. A method for analyzing the vibration in a vehicle, comprising:
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inputting a setup attribute;
collecting a sensor measurement from a sensor;
saving the sensor measurement in a processor; and
generating a vibration attribute from the inputted setup attribute and saved sensor measurement further comprising identifying a moveable sensor location according to said setup attribute, wherein a plurality of sensor measurements, further comprising placing said plurality of sensors at a plurality of sensor locations in the vehicle. - View Dependent Claims (26, 27, 28)
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Specification