Abstract
PCT No. PCT/EP93/02646 Sec. 371 Date Mar. 29, 1995 Sec. 102(e) Date Mar. 29, 1995 PCT Filed Sep. 29, 1993 PCT Pub. No. WO94/08279 PCT Pub. Date Apr. 14, 1994A method for controlling a stepping motor includes the steps of storing step angles as an angle table in memory so that the magnitudes of the step angles rise as microsteps from an initial position having an initial value of zero to a final position having a final value in the order of magnitude of a coarse step; connecting field windings of the stepping motor to a switching device which sets a magnitude and direction of phase currents in the field windings as a function of a vector angle of a required vector which is switched onwards by one of the step angles per interval of a system clock, reading out from the memory the stored values in an increasing direction on one hand for acceleration and in a reverse direction on the other hand for braking, the step angle being dependent on the stored values which are read out from memory.
| Original language | English |
|---|---|
| Patent number | US5640075 |
| IPC | H02P 8/ 00 A I |
| Priority date | 29/09/93 |
| Publication status | Published - 17 Jun 1997 |
| Externally published | Yes |