| 摘要 |
The invention provides for a high dynamic performance of a frequency-voltage converter with minimum delay from frequency into voltage. Especially to provide for highly accurate maintenance of speed i.e. a fast control performance of a motor, a pulse train is derived upon operation of the motor in the form of recurring needle trigger pulses. A command pulse train is derived having pulse gaps which are longer than the trigger pulses and spaced from each other so that, if the speed of the motor is at the correct level, the trigger pulses will fall within the pulse gaps. During the time interval DELTA T between the end of a preceding command pulse Ts and the next subsequent trigger pulse Ti, a capacitor 22 is charged, the charge state of which will provide a control signal to control the supply of energy to the motor which, through a transducer, provides the speed-dependent trigger pulses. |
