Today, around 40% of the world's energy is used to produce electricity, of which about half is consumed by electric motors. An estimated 7 billion motors are produced each year to control motion in ...

Demand is growing for appliances such as washing machines, refrigerators, and air conditioners to help improve domestic energy efficiency. Moving from conventional fixed-speed motors to variable-speed ...

The actions of humans, machinery, ventilation and heating systems, and road or rail traffic can cause many vibrations. Although these vibrations have little effect on occupants, equipment used in ...