Abstract: To diagnose the electrical contact state of gas-insulated switchgear (GIS), the monitoring method based on variational mode decomposition (VMD) and Hilbert marginal spectrum energy entropy ...

New rules for Wireless Emergency Alerts and the proposed auctioning of 5G spectrum licenses were two actions highlighted by the FCC during its open meeting.

Vibration-fatigue life can be compared to rainflow method ... Here is a simple example of using one of the criteria defined for the amplitude spectrum: ...

Experts say there are no guarantees that anti-snoring devices will work for you, but they’re worth a try, so long as you ...

Power tools can make a lot of jobs way easier, but if you're really aiming for fine detail work, look no further than these ...

Dragonfly Energy launches the Battle Born® DualFlow Power Pack, a lithium power solution that eliminates idling, cuts fuel ...

Wu Ximing, a senior rotorcraft researcher and chief technologist at the State-owned aviation conglomerate, told China Daily ...

Abstract: An accurate extraction of vibration signal characteristics of an on-load tap changer (OLTC) during contact switching can effectively help detect its abnormal state. Therefore, an improved ...

PT300 Machine Vibration Simulator（机械振动模拟器）通常采用小型电机作为动力源。电机具有良好的调速性能，可以通过改变输入电压或电流来精确控制电机的转速，从而为模拟不同转速下的机械振动提供动力支持。配合直流调速器，能够实现对电机转速的精准调节 ...