Error Compensation Method for Synchronous Acquisition of Random Vibration Signals of Tunneling Machines
The working environment of roadheader is relatively harsh,with a large amount of interference signals mixed in the vi-bration signal.There is a random hysteresis phenomenon in the signal acquisition process,resulting in a large error in the col-lected roadheader vibration signal.Therefore,a method for compensating roadheader vibration signal error based on multi-sensor data is proposed.Considering the roadheader as a multi degree of freedom system,the kinematic model of the equipment is established;Combining the kinematic characteristics of roadheader,a random excitation function is reasonably constructed us-ing the virtual excitation method;Under the established random excitation,select the sensor type,installation method,and pa-rameters,and design a calibration system based on the requirements of the sinusoidal steady-state calibration method.Improve sensor sensitivity,predict sensor output delay,calculate the synchronization error and error compensation value for each measure-ment.After compensation,ensure that multiple sensors achieve synchronous dynamic compensation for vibration signal errors.Ex-perimental results show that the proposed method reduces random hysteresis,and the collected signal waveform matches the ac-tual waveform,effectively achieving error compensation for the collected signal.
NETL
NSTL
万方数据
维普
