A modified helicopter model dynamic balance adjustment phase calculation method
A helicopter model and phase calculation technology, applied in static/dynamic balance testing, machine/structural component testing, instruments, etc., can solve problems such as inaccurate phase adjustment calculations, reduce vibration levels, ensure test safety, The effect of eliminating interference factors
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[0028] In order to verify the effect of this method, three sets of vibration signal and speed signal data collected by the helicopter model rotor test bench data acquisition system and monitoring and alarm system are selected for calculation and comparison. The first set of data is the data collected by the data acquisition system, and the sampling rate is 2000 points / second; the second and third sets of data are the data collected by the monitoring and alarm system, and the sampling rate is 5000 points / second.
[0029] The implementation steps are as follows:
[0030] (1) Intercept the collected vibration signal and speed signal time history data. The length of the data intercepted by the first set of data is 10 seconds, and the starting point of the intercepted data is the rising edge of the speed; the length of the data intercepted by the second set of data is 10 seconds seconds, the starting point of the intercepted data is the rising edge of the speed; the length of the d...
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