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Angular-misaligned shafts connected by gear coupling is the main study object. First introduced a model that consists of two angular-misaligned rigid shafts mounted on bearings. The non-dimensional lateral vibration differential equation of angular-misaligned shaft during startup process is derived, the equation is investigated by numerical integral method. The result reveals that the vibration peaks...
Damage of bearings is the most common cause of failures of squirrel-cage induction motors. A faulty bearing results in additional motor vibrations. They are reflected in the harmonic content of stator currents. In certain operating conditions the current signal is the sole source of information on the state of the motor. The paper presents a mathematical model of the motor, allowing for rotor eccentricities...
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