Abstract: Provided herein are devices, systems, and methods for electrically-augmented damping of an actuator and associated devices. In particular, electrically-augmented damping derived from measurement of voltage across an actuator and current flowing through an actuator is provided.

Abstract: Provided herein are devices, systems, and methods for electrically-augmented damping of an actuator and associated devices. In particular, electrically-augmented damping derived from measurement of voltage across an actuator and current flowing through an actuator is provided.

Abstract: Disclosed are methods and apparatus that minimize the degradation of the Modulation Transfer Function (MTF) which results from a mismatch between the velocity of an optical image (V.sub.TDI) and that of a corresponding charge image (V.sub.OPTICAL) formed in a TDI radiation detector array (14). In accordance with one aspect of this invention, there is developed a figure-of-merit (FOM) that is indicative of a match between the velocities of the optical image and the charge image. The velocity match metric is developed directly from recovered video information, and serves as an input to a closed-loop controller (22, 24, 26, 23, 26') which "servos" the velocity of the charge image in order to maximize the velocity match metric. In that the error signal is indicative of the true optical image velocity, MTF degradation due to velocity mismatch is minimized without requiring apriori knowledge of image velocity.

Abstract: A resettable clamp-sample-and-hold (RC-S/H) circuit includes a preamplifier 12 which buffers and scales a video imaging signal for an RC filter 17. Charge accumulated on the capacitor 16 of the RC filter 17 from previously recovered pixel voltage levels may be removed through a reset switch 18. The scaled video imaging signal may then propagate through a filter buffer 20, a clamp buffer 26 and a sample/hold buffer without the adverse effect of sequential pixel crosstalk.