| 摘要 |
PURPOSE:To obtain a high output torque, by a method wherein current is supplied to a multiphase stator coil so that the synthetized magnetomotive force of the coil current with respect to a change between the normal rotation of a rotor and the reverse rotation of the same is generated in a reverse phase at a different position from it before the change. CONSTITUTION:A speed controller ASR, controlling a two-phase motor 2, operates a speed error by a speed command (w) and an actual speed (wf) from an encoder E. A position detector PS obtains two-phase sine wave signal in accordance with the position of a rotor 2 and is provided with two-phase current controlling systems (ACRA-ACRB) to control respective phases. According to this method, the input signal of the current control system is shown as the product of a phase signal output and the speed error to make different countermeasures to controllers 12A, 12B, supplying a current to the coil of a stator, in the case of the normal rotation of the rotor 2 or a positive current and the reverse rotation or the like in which the current is negative whereby a large torque may be obtained. |
