REACTION MOTOR AND ITS DRIVING METHOD

摘要

PURPOSE:To provide a reaction motor which can be driven with small power and low loss and has a light weight at a low cost. CONSTITUTION:A cylindrical permanent magnet 21 is mounted in a cylindrical stationary frame through a plurality of radially provided laminated piezoelectric elements 12-17, and a rotor 3 of ferromagnetic material is disposed in a bore side of the magnet 21 through an air gap. The elements 12-17 are sequentially applied by a voltage to rotate an air gap change between the magnet 21 and the rotor 3 therearound to generate a torque at the rotor 3 due to a magnetoresistance change.