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It is important to reduce the energy dissipated even in a mechatronic system. The present paper proposes an optimal velocity function in a position control and an optimal lead of a ball screw-nut in a linear actuator. The linear actuator system is composed of a motor, a ball screw-nut and a load. The system has three kinds of friction, rolling friction in the ball screw-nut, Coulomb friction between...
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