A sensorless algorithm was developed to predict rotor speeds in an electric three-phase induction motor. This sensorless model requires a measurement of the stator currents and voltages, and the rotor speed is predicted accurately without any mechanical measurement of the rotor speed. A model of an electric vehicle undergoing acceleration was built, and the sensorless prediction of the simulati...

The force produced by the flagella of the bacterium Salmonella typhimurium has been measured using negative dielectrophoretic methods. The bacteria are held in a force funnel, produced using a nonuniform electric field. When the motor force is balanced against an opposing negative dielectrophoretic force the bacteria become motionless. Numerical simulations have been used to estimate the electr...

The speed of ultrasonic motor of piezo-electric type is usually measured using mechanical sensors such as pulse encoders. However, these sensors are costly and bulky. In this paper, a numerical speed estimation approach of a piezo-electric motor (PEM) is implemented using multilayer perception neural network (MLP-NN). The proposed model evaluates rotational speed and load torque based on the am...

Electric motors use 60% of the electrical energy generated in the U.S. An improvement of 1% in all electric motors’ operating efficiency could result in reduced coal combustion of 6.5 to 10 million tons* per year. New techniques are required to extract the ultimate performance from modern motors. This study examined the feasibility of Fuzzy Logic Motor Control (FLMC). The investigation included...

Traditional loaders with engines present the drawbacks of high energy consumption and poor emissions performance. The usage an electric motor instead engine in loader can effectively improve efficiency emissions. is mainly used earthwork construction unstructured roads. Compared to automobile, during working process loader, load fluctuates violently, vibration serious. A large torque range oper...

This paper shows a model of five-phase synchronous motor with permanent magnets and simulation control device. A in the SimInTech software product is built. The transient time 0.03 s when stepped input applied. When load moment inertia increases by factor 10, accuracy speed response decreases. maximum error 40% at 0.2 s. consequence changing object. It suggested to perform identification adapt ...