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| Number | Title | Issue Date |
| 7418328 | Steering logic for self-propelled mower Steering logic for a self-propelled vehicle having a plurality of wheels includes the steps of receiving translational velocity and angular velocity commands, determining the resultant velocity and steer angle of each wheel, and determining the wheel offset correcti... | 08/26/2008 |
| 7316288 | All terrain vehicle with multiple steering modes Methods and apparatus for steering a vehicle are disclosed. A vehicle in accordance with an exemplary embodiment of the present invention is capable of operating in a first steering mode and a second steering mode. The vehicle may comprise an input device capable of... | 01/08/2008 |
| 7290638 | Electric power steering system An electric power steering system, includes a torque sensor disposed to a steering shaft to detect a steering torque. A first pinion is disposed to the steering shaft. A rack shaft is in mesh with the first pinion and connected with the steering shaft to change a ro... | 11/06/2007 |
| 7234564 | Haptic controller for road vehicles An electric assisted steering system for a motor driven road vehicle, having assist torque signal generating means which generates an assist torque signal for the steering system in response to the driver's applied torque and sensed vehicle speed to reduce the drive... | 06/26/2007 |
| 7233850 | Vehicle steering apparatus An object of the present invention is to provide a vehicle steering apparatus that detects the tire load, and based on the detected tire load, performs steering control which accurately reflects the road conditions. A vehicle steering apparatus of the present invent... | 06/19/2007 |
| 7185731 | Haptic controller for road vehicles An electric assisted steering system for a motor driven road vehicle, having assist torque signal generating means which generates an assist torque signal for the steering system in response to the driver's applied torque and sensed vehicle speed to reduce the drive... | 03/06/2007 |
| 7130728 | Vehicle steering apparatus and method for controlling the same A steer-by-wire steering apparatus for a vehicle has a first control system including a first ECU, and a second control system including a second ECU. Each ECU responds to manipulation of the steering wheel by a driver, and controls a steering motor. The first ECU d... | 10/31/2006 |
| 7099751 | Drive-by-wireless vehicle control Drive-by-wireless vehicle control techniques use a wireless connection between a sensor module and a control module. An action by the driver of the vehicle is detected by the sensor module and communicated to the control module using a message sent using a wireless ... | 08/29/2006 |
| 7089101 | Method for assisting a driver when performing driving maneuvers The invention relates to a method for assisting the driver of a vehicle (10) when performing a driving maneuver, such as a parking or shunting maneuver. In this case, a reference trajectory (16) is determined, along which the vehicle (10) is to ... | 08/08/2006 |
| 7077232 | Optimum steering system geometry An improved system for achieving optimum steering angles for wheels incorporates a sensor which senses the steering angle of a first wheel. The sensed angle is sent to a control which then determines the optimum angle for the other steered wheel based upon known for... | 07/18/2006 |
| 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 |
| 6929086 | Motor vehicle steering system A steering system selectively operable in one of six modes: steer-by-wire with rear steering, steer-by-wire without rear steering, electronic power assist steering (EPAS) with rear steering, electronic power steering (EPAS) without rear steering, mechanical backup m... | 08/16/2005 |
| 6913106 | Vehicle steering system In a vehicle steering system, a steering mechanism includes an input section, and a steering section mechanically separated from the input section, and arranged to steer a vehicle. An actuating section includes a plurality of drive units for producing an actual torq... | 07/05/2005 |
| 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 |
| 6622813 | Hybrid steer-by-wire with mechanical link A hybrid steer-by-wire and mechanical steering system for a vehicle includes two subsystems. The first subsystem connects a steering wheel with a mechanical link adapted to turn a first wheel of the vehicle. The second subsystem has an electro-mechanical ... | 09/23/2003 |
| 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 |
| 6386553 | Vehicle wheel suspension arrangement An arrangement for the suspension of a wheel of an automotive vehicle is disclosed. The wheel is connected to a propulsion device for driving the vehicle and a braking device for braking each individual wheel. The invention has sensors for detecting at le... | 05/14/2002 |
| 6272410 | Electric power steering system To keep low the cross frequency of current feedback control and provide a good steering feeling, a first operation expression is selected when a difference .xi. between a current instruction value computed based on a steering state of a steering wheel and... | 08/07/2001 |
| 6198988 | Method for detecting an erroneous direction of travel signal A method for detecting an erroneous travel direction or a defective yaw rate sensor 12 is disclosed. Two estimates of the vehicle yaw rate are gathered from separate criteria and are compared with one another as well as the measured vehicle yaw rate. Usin... | 03/06/2001 |
| 6161068 | Electric power steering control system An electric power steering control system reducing steering torque without making a driver feel uncomfortable torque oscillation, including a rotation speed observer for estimating the rotation speed of a motor based on the output of a torque sensor high ... | 12/12/2000 |
| 5890082 | Adaptive front and rear wheel steering system In a front and rear wheel steering system for steering rear wheels of a vehicle at a certain ratio to front wheels of the vehicle, the rear wheel steering angle is determined according to the steering input and/or the operating conditions of the vehicle, ... | 03/30/1999 |
| 5823288 | Controllable slide car A controllable slide car for controllably simulating oversteer and understeer conditions in a moving automobile. The controllable slide car comprises a rear steering linkage assembly that attaches to the rear wheel mounting assemblies of an automobile and... | 10/20/1998 |
| 5615117 | Method for controlling a front and rear wheel steering system In a method for controlling a front and rear wheel steering system in which front wheels of a vehicle are steered according to a combination of a steering wheel input and an output from a compensatory front wheel steering actuator, and rear wheels of the ... | 03/25/1997 |
| 5586031 | Road vehicle with all wheel steering, and process for steering A process for steering a road vehicle having all wheel steering for placing the vehicle into, within, and out of constricted spaces and small, constricted travel areas, the vehicle having a front, a rear, a longitudinal axis, front wheels steerable rear w... | 12/17/1996 |
| 5506776 | Steering control system for vehicle The amount of wiring required in a steering control system is reduced, and a power loss which occurs in the wiring of the power system is also reduced. The influences of electric noises upon the wiring between sensors and a control unit is reduced, thus i... | 04/09/1996 |
| 5492348 | Vehicle steering system A vehicle steering system provides four distinct steering modes, including a first steering mode for steerage of front wheels with rear wheels neutral, a second steering mode for steerage of rear wheels with front wheels neutral, a third steering mode for... | 02/20/1996 |
| 5472060 | Drive train used in a steering apparatus for rear wheels of a vehicle A drive train of a steering apparatus for rear wheels of a vehicle transmits a driving force of a rotary motor to a steering shaft of rear wheels that is shiftable in the axial direction. The drive train comprises a reduction mechanism driven by the motor... | 12/05/1995 |
| 5448481 | Control system for a front and rear wheel steering vehicle A steering angle of rear wheels are steered according to a deviation between an ideal yaw rate response and an actual yaw rate response to the given steering wheel input. By combining feedback control and feed forward control, immunity from external distu... | 09/05/1995 |
| 5343393 | Steering angle detecting apparatus for motor vehicles based on the phase difference between a steering angle detection signal and steering angle estimated signal A steering angle detecting apparatus for accurately and surely detecting a steering angle of a motor vehicle. The apparatus is equipped with a turning angle detector for detecting a turning angle of a steering wheel of the motor vehicle. In addition, the ... | 08/30/1994 |
| 5307891 | Automotive steering system A vehicle steering system for vehicles with steerable front wheels and steerable rear wheels. A specially elongated pinion steering shift includes two groups of pinion gears. One of the first group of pinion gears meshes with a gear on a steering rack for... | 05/03/1994 |
| 5257191 | Steering device for rear vehicle wheels A device for steering the rear wheels of a vehicle has a first motor controlled at least with respect to the steering angle of the steering wheel, a gear change mechanism for changing gear ratios, a second motor for controlling the gear ratio by driving t... | 10/26/1993 |
| 5234068 | Electric power steering system An electric power steering system which additionally includes a radial arm extending from a steering rod, an axial shaft extending in parallel with the axial center line of the steering rod, an axial bore formed in the casing of the system for guiding axi... | 08/10/1993 |
| 5224042 | Four wheel steering system with speed-dependent phase reversal A four wheel steer control system which uses vehicle speed, front wheel position, and the rate of change of the front wheel position to develop the rear wheel steering command. The rear steering command is a combination of the steady state and transient r... | 06/29/1993 |
| 5189616 | Four-wheel steering system for motor vehicle A four-wheel steering system for a motor vehicle steers motor vehicle rear wheels based on a steering angle ratio between front and rear wheels based on a vehicle speed, and a front wheel steering angle. The steering angle ratio is of a negative value or ... | 02/23/1993 |
| 5143400 | Active toe adjustment apparatus The advantage of the theoretically correct Ackerman steering of land vehicles is well documented in the literature. Steering forces, vehicle handling, and tire wear are greatly improved by having correct toe angles of all steerable wheels. Adjustements in... | 09/01/1992 |
| 5097917 | Steering system of vehicle A steering system for a vehicle includes a steering mechanism mechanically separated form a steering handle and having a motor for steering road wheels, a steering detector for detecting a steering operation of the handle, a steered angle sensor for detec... | 03/24/1992 |
| 5076382 | Method and apparatus for steering a vehicle A method and apparatus for controlling a vehicle steering system of the type having front steerable wheels and rear steerable wheels. The present invention permits the vehicle operator to select front wheel only steering, crab steering, or curl steering. ... | 12/31/1991 |
| 5052508 | Steering control system of motor vehicle A motor vehicle is provided with a steering control system in which rear wheels are steered in response to steered angle of front wheels and vehicle speeds. The control system includes a first speed sensor for detecting a vehicle speed in association with... | 10/01/1991 |
| 4967859 | Vehicle with front and rear wheel steering and a steering system which includes skid simulation and control A vehicle used for training drivers in driving techniques such as skid control has front and rear axles each with steerable wheels. The two signals used to drive motors which control the steering angles of the front and rear wheels respectively are indepe... | 11/06/1990 |
| 4961144 | Self-check method of four-wheel steering drive system In a self-check method of a four-wheel steering drive system, a relay downstream current upon ON/OFF of a relay is checked to check a state of said relay. Forward and reverse rotation control signals of a duty ratio of 0% are supplied to a predetermined c... | 10/02/1990 |
