Noise, vibration and harshness analyzer
First Claim
1. A vehicle noise, vibration and harshness analyzer, comprising:
- at least one sensor, each of which senses a vibration or noise and generates a signal at a frequency related to the vibration or noise;
a communication link with a vehicle, said link capable of transmitting data regarding the vehicle;
a microprocessor system that receives said signals generated by said at least one sensor and receives said vehicle data over said communication link, said microprocessor conducting an analysis of said received sensor signals and said vehicle data to identify a vehicle component that is likely causing a vibration or noise, and to identify the possible problems with said identified vehicle component; and
a user interface including a display, said microprocessor system causing said display to list said likely vehicle components causing said vibration or noise and said possible problems with said components.
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Accused Products
Abstract
A vehicle noise, vibration and harshness analysis tool according to the present invention comprises at least one sensor, each sensing a vibration or noise and generating a signal at a frequency related to the vibration or noise. A communication link with a vehicle is included to transmit data regarding the vehicle. A microprocessor system receives the signals generated by said at least one sensor and receives the vehicle data over said communication link. The microprocessor system conducts an analysis of the received sensor signals and vehicle data and identifies a vehicle component that is likely causing a vibration or noise. The microprocessor system also identifies the possible problems with the identified vehicle component. A user interface is also included with a display. The microprocessor system causes the display to list the likely vehicle components causing the vibration or noise and the possible problems with the components. The list of likely components and causes helps the technician quickly isolate and remedy the cause of the vibration or noise. The invention also discloses methods for balancing a driveshaft using analyzers according to the invention.
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Citations
32 Claims
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1. A vehicle noise, vibration and harshness analyzer, comprising:
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at least one sensor, each of which senses a vibration or noise and generates a signal at a frequency related to the vibration or noise;
a communication link with a vehicle, said link capable of transmitting data regarding the vehicle;
a microprocessor system that receives said signals generated by said at least one sensor and receives said vehicle data over said communication link, said microprocessor conducting an analysis of said received sensor signals and said vehicle data to identify a vehicle component that is likely causing a vibration or noise, and to identify the possible problems with said identified vehicle component; and
a user interface including a display, said microprocessor system causing said display to list said likely vehicle components causing said vibration or noise and said possible problems with said components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A vehicle noise, vibration and harshness analyzer, comprising:
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an instrumentation subsystem for receiving signals from a plurality of sensors, each of said signals relating to a vehicle noise or vibration;
a vehicle interface subsystem for communicating with vehicle subsystems and receiving data regarding the vehicle;
a microprocessor subsystem that receives said sensor signals from said instrumentation subsystem and receives said vehicle data from said vehicle subsystem interface, said microprocessor conducting an analysis of said sensor signals and vehicle data to determine a the vehicle component cause the vibration or noise; and
a user interface subsystem including a display, said microprocessor subsystem causing said display to list said likely vehicle components causing said vibration or noise. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for determining if a driveshaft is balanced, comprising:
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performing a first balance test on an unmodified driveshaft;
performing a second balance test on said driveshaft with a test weight mounted to the driveshaft; and
analyzing the results of said first and second balance tests to determine if said driveshaft is out of balance. - View Dependent Claims (26, 27, 28)
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29. A method for determining if a driveshaft is balanced, comprising:
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performing a first balance test on an unmodified driveshaft;
performing a second balance test on said driveshaft with a test weight mounted near the front of said driveshaft;
performing a third balance test on said driveshaft with a test weight mounted near the rear of said driveshaft; and
analyzing the results of said first, second and third balance tests to determining if said driveshaft is out of balance. - View Dependent Claims (30, 31, 32)
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Specification