| 摘要 |
PCT No. PCT/DE96/01546 Sec. 371 Date Feb. 24, 1998 Sec. 102(e) Date Feb. 24, 1998 PCT Filed Aug. 20, 1996 PCT Pub. No. WO97/08814 PCT Pub. Date Mar. 6, 1997A method of controlling a four-dimensional vector for a controlled system by means of a discrete-value control element with a limited switching frequency. Reference values of a four-dimensional vector of the controlled system at the chosen switching time are calculated as a function of a selected reference switching status with its associated switching time. These reference values are used to calculate the time remaining to the next switching operation, thus enabling the energy difference to be minimized. The actual switching time and the required switching status are determined by a plausibility check. This provides a modulation and control method for high-power drives which combines the high steady-state quality of optimized pulse patterns with the high dynamic characteristics of multi-dimensional, status-oriented on-line control.
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