Help


from Brown Corpus
« »  
One of the most desirable solutions is achieved by the use of a non-linear amplifier for Af.
The amplifier is designed so that its gain is large for accelerometer signals above a certain threshold level.
Below this level, the amplifier gain Af is proportional and is of small value, in order to provide adequate noise filtering.
The effect is that the platform returns from an off-level position at a rapid rate until it is nearly level, at which point the platform is controlled by a proportional servo with low enough frequency response so that the noise has little effect on the leveling process.

2.071 seconds.