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| Number | Title | Issue Date |
| 8186477 | Rear-wheel steering vehicle The present invention provides a rear wheel toe angle variable control system-equipped vehicle that is capable of assisting the steering of the front wheels by a power steering system mounted therein without deteriorating the steering feeling experienced by the vehi... | 05/29/2012 |
| 7975800 | Steering device for vehicles having a pair of wheels which can be steered freely by means of lateral forces A steering device for vehicles having a pair of wheels which can be steered freely as a function of the current driving state of the vehicle or whose steered position can be locked by an electronically actuable locking device, having an electronic control device and... | 07/12/2011 |
| 7349778 | Real-time vehicle dynamics estimation system A real-time vehicle dynamics estimation system that employs a vehicle parameter estimator, a vehicle condition detector and a rich steering input detector for estimating vehicle understeer coefficient and front and rear cornering compliances in real time. The vehicl... | 03/25/2008 |
| 7329199 | In-line actuator apparatus and method An actuator having an electric motor with a rotor shaft engaged with a gear set within a housing is provided. As an example, the gear set may be a planetary gear set. The planetary gears are engaged with a disk. The disk is fixed to a shaft rod or other force transm... | 02/12/2008 |
| 7284634 | Electric power steering apparatus An electric power steering apparatus comprises a rotary shaft member connected to a steering wheel, an elongate member, a rack-and-pinion mechanism, a ball screw mechanism constructed of a screw member, a nut member and a multiplicity of balls interposed between the... | 10/23/2007 |
| 7268988 | Apparatus and method for detecting rotation In a rotation detection apparatus, a rotation-angle detector detects a rotation angle of a rotating body based on an output signal generated by a resolver. An exciting-signal generation circuit supplies an exciting signal for exiting the resolver to generate the out... | 09/11/2007 |
| 7269489 | Adaptive rear-wheel steer open-loop control for vehicle-trailer system A rear-wheel steering control system for a vehicle/trailer combination that adaptively changes an open-loop feed-forward command signal for different trailers or the same trailer with different configurations based only on vehicle parameters. The system includes a h... | 09/11/2007 |
| 7218022 | Linear actuator A linear actuator for displacing a member or a set of movable members, having an electric stepping motor (7) with a rotor having a portion in the form of a nut (9), and a linear-movement screw (12) engaging the nut portion of the rotor. The scre... | 05/15/2007 |
| 7178625 | Steering actuator of independent steer-by-wire system A steering actor of an independent type steer-by-wire system comprises a housing fixed to a vehicle body and an ultrasonic motor. The ultrasonic motor has a stator internally fixed to the housing and a rotator rotating relative to the stator when an electric current... | 02/20/2007 |
| 7147081 | Rack-and-pinion steering system for motor vehicles A rack-and-pinion steering system for motor vehicles includes a rack, which is mounted in a housing such that it is longitudinally displaceable and kept in constant engagement with a pinion by a pressure piece, is connected at both ends to in each case one steering ... | 12/12/2006 |
| 7131653 | Steering device for the support device for the rear wheel hub in motor-vehicles A support device for motor-vehicle wheel hubs adapted to be mounted between the hub and the body of the rear suspension, consisting of a connection element (12), rotatably connected to the body of the suspension and adapted to rotate on a plane which is basic... | 11/07/2006 |
| 7129658 | Electro-mechanical actuator braking apparatus and method using motor commutation sensor output to derive piston displacement A braking system is disclosed that includes a brake (22), a ram (20) shiftable in a linear direction relative to the brake (22) for actuating the brake (22), and a stop (24) for limiting movement of the ram (20). The system ... | 10/31/2006 |
| 7108096 | Vehicle control system with slow-in-turn capabilities and related method A control system with slow-in-turn capabilities for use with a self-propelled, steerable vehicle, such as a lawn mower, is disclosed. In one embodiment, the system slows the vehicle speed when turns are made beyond a predetermined range and the speed is at or above ... | 09/19/2006 |
| 7104482 | Clutch for rock crusher A substantially unidirectional clutch for rock crushers that may help prevent undesired rotation of the cone. ... | 09/12/2006 |
| 7099760 | Active wheel steering control A control system that employs closed-loop control for providing active vehicle rear-wheel steering, where the control system receives longitudinal wheel slip inputs to improve the vehicle directional stability. The longitudinal wheel slip inputs can be from one or m... | 08/29/2006 |
| 7052427 | Electric screw actuator system An electric screw actuator system, e.g. for an electrically driven and controlled steering device, comprises a screw actuator, an electric motor (2) engaging the screw actuator through a reduction gear mechanism (3), electronic operating means for oper... | 05/30/2006 |
| 6999856 | Trailer tongue length estimation using a trailer yaw rate sensor A control system for estimating the tongue length of a trailer being towed by a vehicle in connection with a front wheel steering with or without coordinated rear wheel steering associated with the vehicle. The control system employs an algorithm that calculates an ... | 02/14/2006 |
| 6976555 | Motor vehicle steering system The present invention comprises a steering system selectively operable in one of three modes: steer-by-wire, electronic power assist steering (EPAS), and manual steering. The steer-by-wire system includes a driver interface system (DIS), a road wheel actuator system... | 12/20/2005 |
| 6949901 | System and method for controlling a steering position of rear vehicle wheels A system and a method for controlling a steering position of at least one rear wheel of a vehicle are provided. The vehicle has both a brushless electric motor with a plurality of electrical phase windings and a steering actuator. The brushless electric motor has a ... | 09/27/2005 |
| 6945350 | Steering apparatus for turning multiple sets of steerable vehicle wheels A steering apparatus (10) for turning steerable wheels of a vehicle having first and second sets (14 and 16) of steerable wheels comprises a first steering gear (22) actuatable, in response to rotation of a handwheel (110), to effe... | 09/20/2005 |
| 6915194 | Vehicle steering control system The terminal voltages of respective phase coils of a steering shaft driving motor constituted by a three-phase brushless motor are separately detected. When the terminal voltages detected at at least three different conducting terminals u, v, and w are made Vu, Vv, ... | 07/05/2005 |
| 6909957 | Method for controlling yaw and transversal dynamics in a road vehicle For the purpose of controlling the yaw dynamics and lateral dynamics in a road vehicle with electrically controlled four-wheel steering, in the case of which the setting of the front axle steer angle δv and of the rear axle steer angle δh is ... | 06/21/2005 |
| 6863149 | Steering mechanism of electric car A steering device for an electric car includes tandem wheel suspensions for at least two sets of tandem wheels and a steering mechanism for each set of tandem wheels and provides a smooth turning motion. The steering mechanism for one tandem set of wheels is formed ... | 03/08/2005 |
| 6854557 | Anti-jackknife control for vehicle-trailer backing up using rear-wheel steer control A vehicle control system that selectively provides rear-wheel steering to prevent a vehicle-trailer from jackknifing during a back-up maneuver. The system senses a steering angle of the vehicle, a speed of the vehicle and a hitch angle between the vehicle and the tr... | 02/15/2005 |
| 6851510 | Rear-wheel steering device for vehicle A worm gear and an irreversible clutch mechanism adapted to permit the transmission of a driving force from an actuator toward rear wheels and to inhibit the transmission of the driving force in a reverse direction, are disposed at upstream and downstream locations ... | 02/08/2005 |
| 6752237 | Rear wheel steering apparatus A rear wheel steering apparatus comprises an electric motor generating rotational torque, an electric control device controlling the rotation of the electric motor, a motion converting device converting the rotational torque of the electric motor into a propulsion f... | 06/22/2004 |
| 6735507 | Four wheel steering system and method for trailering An all wheel steering system for a vehicle comprising a controller having a first input for receiving a signal from a hand wheel position sensor, a second input for receiving a signal from a vehicle speed sensor, and a third input for receiving a signal that varies ... | 05/11/2004 |
| 6728615 | System and method of controlling vehicle steer-by-wire systems with adjustable steering feel The present invention involves a system and method of controlling a steer-by-wire system to produce adjustable steering feel for A vehicle driver by providing control of reaction torque on a steering wheel of a vehicle. The method includes a quantitative description... | 04/27/2004 |
| 6721638 | AGV position and heading controller A method and apparatus for controlling the steering of an automatic guided vehicle (AGV) includes simultaneously correcting the vehicle's heading and position errors. The vehicle may include first and second steering control loops that determine the vehicle's positi... | 04/13/2004 |
| 6657555 | Parking operation aiding system A parking operation aiding system includes a display for displaying parking-aiding information including a target parking position and a vehicle position. The system also includes a locus calculating means for calculating an expected movement locus for a ... | 12/02/2003 |
| 6640172 | Dual gain algorithm for four wheel steering system A vehicle steering system coupled to a steerable wheel, comprising a steering rack linked to said steerable wheel, an electric motor having an output shaft engaged with the steering rack for controlling the steerable wheel. The system also includes a posi... | 10/28/2003 |
| 6637540 | Steerable drive axle with electrically-powered steering apparatus A steerable drive axle for a motor vehicle including a rigid tubular housing, a pair of steering knuckles at opposite ends of the rigid tubular housing, an expanded chamber in the middle of the rigid tubular housing open on one side for access to a differ... | 10/28/2003 |
| 6615124 | Vehicular dynamic controlling apparatus and method Vehicular dynamic controlling apparatus and method for an automotive vehicle which can achieve a desired yaw rate output in response to a steering input by a vehicular driver even when the controlled vehicle is running in such a cornering limit range such... | 09/02/2003 |
| 6580988 | Rear wheel steering control A method is disclosed for controlling the rear wheel angle in a four-wheel steering vehicle such as a pickup truck. The front wheels are steered using the conventional operator handwheel linked to the front wheels. The rear wheels are actuated with a reve... | 06/17/2003 |
| 6540043 | Vehicle steering system with electronic power regulation unit for limiting the steering angle of rear wheels at high speeds A steering system for an automotive vehicle having two front wheels and two rear wheels is provided. The steering system includes a vehicle speed sensor; means for steering the front wheels at a desired steering angle; at least one steering angle sensor f... | 04/01/2003 |
| 6535806 | Tactile feedback control for steer-by-wire systems A steer-by-wire system includes a steering wheel; a steering wheel sensor coupled to the steering wheel for sensing the position of the steering wheel and producing a signal indicative of the position of the steering wheel; a controller in signal communic... | 03/18/2003 |
| 6519518 | Method for detecting motor control loss in a power steering system A method for detecting a loss of motor control in an electric power steering system is disclosed. In an exemplary embodiment, the method includes determining a duty cycle of a steering command signal generated by a controller. The steering command signal ... | 02/11/2003 |
| 6505700 | Rear wheel steering device A rear wheel steering device steers rear wheels of a vehicle by using two electric motors. When the two electric motors are in normal condition, both electric motors are driven to steer the rear wheels. When one electric motor is in an abnormal state whil... | 01/14/2003 |
| 6499558 | Modular motor and controller assembly for rear-wheel steering system A modular motor and controller assembly for a rear steering system of a motor vehicle includes a motor portion and a controller portion disposed in direct mechanical communication therewith to form a unitary package. The motor portion may include a motor ... | 12/31/2002 |
| 6459972 | Diagnostic apparatus and method for motor driven power-assisted steering system In diagnostic apparatus and method for a motor-driven power-assisted steering system, an abnormality determining section detects a state in which the detected normal/reverse drive current indicates an opposite to a direction of the normal/reverse revoluti... | 10/01/2002 |
