Moog Gmbh

Mark J Underhill

Raymond Druce

Danielle Reni

Michael G Fattey

Richard Fosdick

An autonomous or semi-autonomous vehicle camera system including a camera having a field of view, wherein the camera is operable to receive optical information in the field of view. A display located in the camera field of view. A controller in electrical connection with the camera, wherein the controller is operable to conduct a Built-in-Test. Wherein the Built-in-Test is configured to present one or more images in the camera field of view via the display to determine functionality of the camera system.

Camera system in situation built-in-test

A voltage converter () having a first bidirectional voltage line (), a second bidirectional voltage line (), a power storage element (L) arranged between the first bidirectional voltage line and the second bidirectional voltage line, a switch element electronically coupled to the power storage element, a controller () for controlling the switch, and the controller configured and arranged to adjust a current flow between the first voltage line and the second voltage line such that a voltage level on the second bidirectional voltage line is substantially maintained at a target DC voltage.

Active voltage bus system and method

The present invention provides a unique improvement () in an electronic motor drive () having an LC filter () to reduce conducted emissions from a motor (M) back to a voltage source (V). The improvement broadly includes diode () in series with the inductor (L) of said filter to prevent transmission of regenerative power from the motor to said voltage source; and a bypass switch () arranged in parallel with the diode and selectively operable to enable transmission of regenerative power from the motor to said voltage source.

Device for controlling regeneration energy in an electronic motor drive having an LC filter to reduce conducted emissions from the motor back to the voltage source

The present invention provides an improved current spike limiting circuit (49) for a DC brushless motor controller (21) arranged to operate in six-step mode. The controller has three electrically-controllable first switches (A.sub.U, B.sub.U, C.sub.U) arranged between a supply voltage (22) and a terminal (26, 28, 29) of a respective one of the field coils (A, B, C), and has three electrically-controllable second switches (A.sub.L, B.sub.L, C.sub.L) severally arranged between a ground (23) and the field coils. The improved circuit broadly comprises a regeneration polarity comparator (50) for sensing regenerative operation of the motor; a tachometer (58) for sensing motor speed; and an adjustable pulse generator (55) from momentarily opening a conducting one of the first switches for a predetermined time interval (t.sub.p) after a predetermined delay (t.sub.d) following a point in time (t.sub.s) when one of the second switches is closed and another of the second switches is opened. The durations of such momentary opening and the length of the predetermined delay are controlled as functions of sensed regenerative operation and motor speed. Hence, excessive current spikes in the switches are prevented.

Growing community of inventors

East Aurora, NY, United States of America

Mark J Underhill