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Engine vibration and engine trim balance test system, apparatus and method

  • US 9,080,925 B2
  • Filed: 06/13/2012
  • Issued: 07/14/2015
  • Est. Priority Date: 06/13/2012
  • Status: Active Grant
First Claim
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1. A system for testing simulating engine vibration for an engine monitoring unit, the system comprising:

  • a processor for executing a device control application stored in memory to generate a plurality of components of a plurality of simulated accelerometers, each simulated accelerometer including;

    an engine simulator that generates, via the processor, a plurality of engine simulator outputs;

    an accelerometer signal simulator that receives, via the processor, the plurality of engine simulator outputs and generates a plurality of accelerometer signal simulator outputs;

    an accelerometer waveform generator circuit, including a digital-to-analog (D/A) converter, that receives the plurality of accelerometer signal simulator outputs and synchronizes at least one of the plurality of accelerometer signal simulator outputs to a reference timing signal from one of the plurality of engine simulator outputs, the accelerometer waveform generator generating a plurality of accelerometer waveform generator outputs;

    a filter section that receives and filters noise from the plurality of accelerometer waveform generator outputs to generate a plurality of filtered accelerometer waveform generator outputs;

    a mixer that receives and combines each of the plurality of filtered accelerometer waveform generator outputs to generate a single filtered accelerometer waveform generator output; and

    a charge converter that receives and converts the single filtered accelerometer waveform generator output to a current charge vibration simulation output; and

    the engine monitoring unit that receives each current charge vibration simulation output from each of the plurality of simulated accelerometers to measure a simulated total engine vibration.

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