The direct current (dc) motor servo systems are widely used in vehicles. The parameters and disturbances of the servo systems are usually uncertain or unknown, which makes it difficult to achieve ...

The MotorTrend Classic Cars section showcases the greatest cars the world has seen, in addition to cars you may have forgot existed, rare and exotic cars and unique vintage vehicles.

Hydrostatic drives used on board ships are often characterized by low efficiencies, heavy maintenance, frequent oil leaks and large weight and size. To overcome these drawbacks, oil-free inverter-fed ...