| 摘要 |
<p>PCT No. PCT/EP96/05850 Sec. 371 Date Jul. 13, 1998 Sec. 102(e) Date Jul. 13, 1998 PCT Filed Dec. 27, 1996 PCT Pub. No. WO97/26694 PCT Pub. Date Jul. 24, 1997In a method of controlling a direct-current drive, in particular a direct-current door drive, two state variables of the direct-current drive are determined and, on the basis of these state variables, a load or resistance moment applied to the direct-current drive is determined and compared with a predetermined load or resistance moment. Subsequently, it is established that an abnormal situation exists when the load or resistance moment determined exceeds the predetermined load or resistance moment.</p> |
