| 摘要 |
An analog-to-digital converter (12) is used in a circuit for controlling electric drives, using a rectifier (1), a DC controller (2) and an inverter (3). A desired output frequency value Fin is thereby converted and addresses a store (10) whose particular address represents a control value proportional to the desired output voltage of the inverter. After conversion in a digital-to-analog converter (14), the control value is fed to the controller (2) as a desired value, thus ensuring the optimum utilisation of energy. Different voltage frequency ratios may be selected by means of a selector (11) which enables different stored values to be addressed. <IMAGE> |
