Cts Corporation

Honeywell International Inc.

Alliedsignal Inc.

David Kolberg

Kevin C Wolschlager

Douglas Edward Cors

William Shelby Stewart

Scott Calkins

Eric Andrina

Stanley W May

Jonathan T Beehler

Xiaofeng Huang

Ryan Andrew Wagner

Sean W Linden

Derek L Crites

Yulanda King

Eric D Alden

James Russell Phillips

Curtis L Carson

Andy Rutten

David E Scott

Yulanda Y H W King

Carol L Stefano

Ganesh Baral

Arthur Hazlewood

Alan Bedford

A vehicle pedal emulator assembly comprising a housing and a sleeve both defining an interior cavity. The sleeve is adapted for sliding movement in the interior cavity of the housing. Respective first, second, third, and fourth springs located in opposed ends of the interior cavity of the housing are compressible in parallel in response to the sliding movement of the sleeve in the interior cavity of the housing. The first and second springs surround the shaft and extend between one end of the housing and one end of the shaft. The third and fourth springs extend between one end of the sleeve and the other end of the sleeve. The combination of an inductive sensor and a Hall Effect sensor are adapted for measurement of the position of the sleeve relative to the housing.

Vehicle pedal spring resistance emulator assembly with position sensor

A method and system is provided for determining faults in a vehicle brake system. An electronic processor obtains a brake pedal signal from a brake pedal that indicates a driver intent to brake and obtains a vehicle braking response condition signal from a brake system feedback sensor. The electronic processor determines a fault state when (1) the brake pedal signal is indicative of no brake pedal movement and the vehicle braking response signal is indicative of a vehicle braking response occurring, or when (2) the brake pedal signal is indicative of brake pedal movement and the vehicle braking response condition signal is indicative of no occurrence of a vehicle braking response. The electronic processor controls an output of an audio or visual indication of a fault state and/or controls braking operation of the vehicle in response to the fault state.

Fault detection arrangement for vehicle brake system

An axial brushless DC motor comprising a stator, a rotor including a magnet, a sleeve bushing extending through the stator and including a pair of opposed distal collars, a motor shaft extends through the sleeve bushing, and a pair of opposed bearings are seated in the respective pair of collars and mount the shaft and a rotor for rotation relative to the sleeve bushing and the stator. The bearings are adapted for thrust, radial support/self-alignment, and angular adjustment of the motor shaft. In one embodiment, a stator overmold member includes a central tube that defines the sleeve bushing and includes a stator shorting ring. In one embodiment, a metal pole piece is seated in a cup-shaped magnet with a rim and the magnetic flux travels through the rim of the magnet and through a magnetic flux sensor.

Axial brushless DC motor

A rotary actuator includes a connector housing with a hollow tube, a separate motor housing clipped to one side of the connector housing, and a separate gear and sensor housing clipped to an opposed side of the connector housing. At least a first gear and a first gear carrier are located within the interior of the hollow tube. A motor shaft extends from the motor through the connector housing into the tube and into engagement with the first gear. A sensor is seated on an exterior surface of the hollow tube and a magnet is housed in the interior of the first gear carrier. The sensor is adapted to change changes in the magnetic field generated by the magnet in response to movement of the magnet.

Rotary actuator

A brake actuator includes a carrier () having a centerline (), a periphery and a radial slot () in the periphery, and an EMA (), including an electric motor () having a longitudinal centerline () and a ram () having a longitudinal centerline () operatively connected to the electric motor (), where the electric motor () is designed to move the ram () in the direction of the ram longitudinal centerline (), the EMA () being mounted on the carrier () in the slot () with the ram longitudinal centerline radially () inward of the periphery and the motor longitudinal centerline () radially outward of the periphery. Also the EMA () used in the brake actuator.

Brake carrier having improved electromechanical actuator and mounting arrangement therefor

A method of controlling a braking force applied to at least one wheel supporting a tire that includes steps of issuing a braking command (), commanding an amount of tire stretch based on the braking command (), estimating an amount of tire stretch for the tire based at least in part on wheel speed (), and controlling the braking force applied to the wheel so that the estimated amount of tire stretch approaches the commanded amount of tire stretch (). Also, a system () for controlling braking based on a determination of tire stretch that includes a tire stretch command generator () generating a tire stretch command based on a braking command, a reference velocity estimator () producing a first signal indicative of a velocity, a tire stretch estimator () producing a second signal indicative of an amount of tire stretch, and a brake force command generator () generating a brake force command based on the braking command, the first signal and the second signal.

Method and system using tire stretch data to control braking

An electromagnetic braking system includes a brake stack (), a ram () shiftable in a first linear direction toward and against the brake stack () and in a second linear direction opposite the first linear direction, a motor () having an output shaft () mechanically connected to the ram () and rotatable in a first rotation direction for moving the ram () in the first linear direction and in a second rotation direction for moving the ram () in the second linear direction, at least one friction member () having a friction surface () mounted adjacent to the motor output shaft (), and an friction surface () for moving the friction surface () of the at least one friction member () against the motor output shaft () in a non-locking manner and holding the friction member () against the motor output shaft () with a predetermined force to perform a park brake function, wherein the predetermined force is low enough to allow the output shaft () to slip when a rotational force on the output shaft () exceeds a given level. Also a method for performing a park brake function.

Electric brake having parking brake function

A braking system includes a brake control system (BCS) () having a first output () and a second output (), a first controller () having a brake command input () connected to the BCS first output (), a direct enable input (), an indirect enable input (), a driver output () and an indirect enable output (), a second controller () having a brake command input () connected to the BCS second output (), a direct enable input (), an indirect enable input (), a driver output () and an indirect enable output (). The first controller () produces an indirect enable signal on the first controller indirect enable output () when a direct enable signal is received at the first controller direct enable input () and a brake command signal is received at the brake command input (), and produces a driver actuation signal on the first controller driver output () when a direct enable signal is present on the first controller direct enable input () and an indirect enable signal is present on the first controller indirect enable input () and a brake command is received on the first controller brake command input ().

Brake system providing at least one enable signal to brake controllers and method of using same

Enhanced directional stability in an aircraft anti-skid braking system is achieved by using one common deceleration command (16) which is a selected one of left and right brake pedal deceleration commands (19, 119). The individual brake pedal deceleration commands (19, 119) are used to modify (34, 134) the common or selected deceleration command (16) and provide respective side wheel velocity commands to retain a differential braking capability (36, 136), and thereby avoid the potential for instability inherent when utilizing individual deceleration commands for the left and right wheel brakes of an aircraft.

Velocity based brake control system with directional stability

A brake and anti-skid control utilizing optical input sensors for determining wheel speed or position and suitable for aircraft use is disclosed. A valve control has a continuous source of pressurized hydraulic fluid, a hydraulically actuated wheel rotation brake device which responds to applied hydraulic pressure to apply a braking force to the wheel to arrest wheel rotation, a low pressure hydraulic fluid return, and a flow control servo valve interconnecting the source, the return, and the braking device for directing fluid from the source to the braking device when in a first state and for directing fluid from the braking device to the return when in a second state. Applied hydraulic pressure is monitored and if that monitored pressure exceeds a command pressure, further fluid from the braking device is diverted to the return.

Growing community of inventors

Granger, IN, United States of America

David Kolberg