| 摘要 |
<p>Control device for maintaining an object in a given position comprising a motor (M), an encoder (1) and a circuit (2, 100, 5) for generating a signal for correcting the position of an object, said circuit comprising elements (2, 4) for generating a position shift signal from the output signal of said encoder (1) and an external reference (C), at least two channels (22, 23) of different differenciation degrees, each channel having a sampling device (32, Bo) receiving said position shift signal, a summing device (10) receiving the output signals of said channels and an amplifier (5) receiving the signal from said summing device, the output signal of the latter controlling the motor. The device is characterized in that sampling of said channels is effected at different frequencies.</p> |
