Three applications of the RDGTs are investigated: Gabor representation for transient signals via the RDGTs, MNR FID signal enhancement via the oversampled Gabor transforms, representation and approximation of time-varying systems via the RDGTs. The experimental results show the efficiency and advantages of the RDGTs in applications.
This facility digital storage oscillograph (DSO for short),which used for the input terminal of the oscillograph,is a digital storage equipment. It is controled by simple-chip Microcomputer (SCM) and CPLD, and joined the computer through the interface,then analyses the complicated and changeable signal in transiency.
This paper introduces a new data acquisition and processing system for multi-channel signals. This system mainly consists of oscilloscopes, digitizing camera systems (dcs) and a personal computer. It can be used to acquire and process multi-channel instantaneous sig nal pulses of ns rise time.
An on line monitoring system for HVCB, especially fitted for monitoring low-speed and transient signals at the same time is presented in this paper. The hardware characteristics are described in details.
Nonstationary vibration is analyzed by application of instantaneous orbit and improved Fourier transform, in addition to short Fourier transform and regular holospectrum. The method could reflect the vibration characteristics of rotor systems based on analysis corresponding frequency ellipse. Transient vibration during the start up stage is studied as examples.