Speed control device for moving objects

摘要

A speed control device for moving objects which can quickly change the speed of said object from one speed to another selected speed without overshooting comprising means for generating a signal representing the difference between the actual speed and the desired speed and adding a constant bias to said difference signal if said signal exceeds a predetermined value so that said biased difference signal will actuate an actuating means to move the object more quickly toward the desired set speed and to use and integrate the unbiased difference signal when said difference signal is below said predetermined value, which integration can be used to send smaller signals to the actuating means as the moving object approaches the desired set speed so as to prevent overshooting.