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| Number | Title | Issue Date |
| 8418801 | Electric power steering system An inverter energy consumption calculating portion estimates the actual power consumption of a steering operation assist motor after an engine is placed in an idle-stop state, and a command value of current to be supplied to the steering operation assist motor is li... | 04/16/2013 |
| 8403104 | Vehicle having a variable assist power steering assembly A recreational utility vehicle has a frame, four wheels, a pair of seats mounted laterally beside each other, a cage, a steering assembly, an engine, a front differential, a rear differential, an actuator selectively operatively connecting the engine to the front di... | 03/26/2013 |
| 8381869 | Electric power steering device An electric power steering device for a vehicle includes an estimation mechanism estimating if there is a possibility that a backward electric current flows in a booster circuit toward a vehicle battery device, and a boosting controller stopping the boosting operati... | 02/26/2013 |
| 8365860 | Steering control apparatus A steering control apparatus acquires vibration torque, which is generated by vibration of a gear mechanism when a steering wheel is operated at a steering angle. By setting the acquired vibration torque as a torque difference, an EPS motor current command value is ... | 02/05/2013 |
| 8327699 | Factory steering rack centering using electric power steering system A method is provided for centering a steering rack in an automotive vehicle, particularly a vehicle that includes an electric power steering (EPS) system. The centering method includes locating a center by using an electric motor of the EPS system. The method includ... | 12/11/2012 |
| 8302729 | Electrical power supply unit for vehicle An electrical power supply unit for vehicle comprises: a Main Power Supply 100, a Voltage Converter 40 for converting the output voltage of the Main Power Supply 100 to supply electrical power to a Motor Drive Circuit 30, a Subsidiary Pow... | 11/06/2012 |
| 8272474 | Electric power steering system In an electric power steering system, when a motor rotation angular speed ω and a motor rotation angular acceleration α of a steering assisting motor both exceed corresponding predetermined values ωs and αs, respectively, an abnormal external force application-d... | 09/25/2012 |
| 8267220 | Electric power steering control apparatus An electric power steering control apparatus can reduce a steering vibration such as shimmy vibration generated due to the structure of a vehicle without adding new mechanism elements. The apparatus includes a torque sensor for detecting steering torque generated by... | 09/18/2012 |
| 8251172 | Electric power steering device In an electric power steering device, if the temperature of a specific site that increases due to the driving of a steering assist motor exceeds a threshold, the motor current is controlled to be equal to or below a current restriction value. The temperature Toff of... | 08/28/2012 |
| 8201658 | Electric power steering system An electric power steering system includes a steering wheel, a rack-and-pinion type steering gear box connected to the steering wheel, a steering torque sensor, a pinion shaft, and a steering actuator mounted on the pinion shaft to assist a steering operation conduc... | 06/19/2012 |
| 8196699 | Power steering device for a saddle-ridden vehicle To suppress temperature rises of an electric power steering device provided at a vehicle equipped with a diff lock device and to restrict the operation of the electric power steering device at times other than during diff locking. An electric power steering device t... | 06/12/2012 |
| 8177020 | Control device for the active steering of a vehicle A control device for the active steering of a vehicle comprising a driving differential that is positioned between a steering wheel and steering control means, said differential which furthermore receives at a first input a counter-steering command supplied by a tur... | 05/15/2012 |
| 8177019 | Steering device for vehicle It is one object of the present invention to provide a steering device for a vehicle improving a resolution of detecting a steering reaction force thereby to control precisely a reaction actuator and to improve a steering feeling. The steering device for the ... | 05/15/2012 |
| 8162096 | Vehicle having a variable assist power steering assembly A wheeled vehicle (10) has a power steering assembly. The vehicle can operate in an AWD mode and a 2WD mode. The degree of steering assist provided by the power steering assembly is determined from one of various steering maps (8A-8D; 114... | 04/24/2012 |
| 8100223 | Systems and methods for determining an absolute position of a motor in an active front steering system of a vehicle Systems and methods for determining an absolute position of a motor of an active front steering system of the vehicle are provided. In particular, the systems and methods accurately determine an absolute position of the motor upon startup of the active front steerin... | 01/24/2012 |
| 8091679 | Electric power steering device A highly safe electric power steering device including a control device for determining the failure of a motor current detector based on the difference between the motor current estimate value and the detected motor current value is provided. The abnormality determi... | 01/10/2012 |
| 8066094 | Electric power steering device A steering shaft is composed of an upper shaft, a lower shaft, an input shaft, and an output shaft. The upper shaft, the lower shaft, and the input shaft can rotate together, and the input shaft and the output shaft are relatively rotatably coupled to each other via... | 11/29/2011 |
| 8051945 | Electric power steering system, controller, and method of operation An electric power steering system for a vehicle includes a motor for providing assistance in turning the wheels of the vehicle. The motor is electrically connected to a controller. The controller includes a power device, such as a power transistor, electrically conn... | 11/08/2011 |
| 8037964 | Electric power steering apparatus When stopping operation of an electric power steering apparatus, a motor relay is kept in an on-state even after a power supply relay is in an off-state. A drive control portion sets a target value of a d-axis current to a value other than zero and sets a target val... | 10/18/2011 |
| 7992672 | Electric power steering system An electric power steering system includes a steering wheel, a rack-and-pinion type steering gear box connected to the steering wheel, a steering torque sensor, a pinion shaft, and a steering actuator mounted on the pinion shaft to assist a steering operation conduc... | 08/09/2011 |
| 7984786 | Electric power steering device An electric power steering device, including an electric motor supplied with power from a power supply device to generate a predetermined steering assistance force for a steered wheel, and an assistance control device the controls the amount of electrical power supp... | 07/26/2011 |
| 7975801 | Apparatus for controlling vehicle Tire-uniformity components may generate a lateral force on a vehicle body, when the vehicle is in a turning movement. The lateral force may cause vibrations on the vehicle body. The controller controls a motor of an electric power steering system to modulate an assi... | 07/12/2011 |
| 7954593 | Method for compensating for drive influences on the steering system of a vehicle using an electric power steering system The invention relates to a method for compensating for drive influences of a drive train of a motor vehicle on its steering system, said motor vehicle having an electric power steering system. A drive train simulation model which is integrated into the motor vehicle... | 06/07/2011 |
| 7954594 | Vehicle steering apparatus A vehicle steering apparatus, which includes: a steering system connection member connecting a steering wheel and a tire; an electric generator installed in the steering system connection member so as to adjusting a steering force of the steering wheel; and a contro... | 06/07/2011 |
| 7950495 | Steering system and method for adapting return torque relative to hand wheel speed A method for generating a return torque signal in an electric servo steering system of a vehicle, including the steps of: determining a current steering wheel position; determining a current vehicle speed; generating a return torque signal as a function of the steer... | 05/31/2011 |
| 7926613 | Steering system for vehicle A vehicle steering system including: (a) a steering operation member; (b) a movement-amount variably transmitting device including: (b-1) a housing fixed to a vehicle body; (b-2) a differential mechanism including (i) a first element connected to the steering operat... | 04/19/2011 |
| 7918306 | Electric power steering apparatus In an electric power steering apparatus, a phase control characteristic for a signal corresponding to detected steering torque is changed according to the judgment whether the steering is in a return steering state or a feed steering state, so that a response of a v... | 04/05/2011 |
| 7913803 | Vehicular steering apparatus with capability of providing suitable steering angle correction and power assistance A vehicular steering apparatus according to the invention includes a steering angle correction mechanism, a steering power assist mechanism, and a controller. The steering angle correction mechanism works to provide a correction steering angle to a steerable road wh... | 03/29/2011 |
| 7913804 | Electric power steering system In an electric power steering system for a vehicle that controls a force that urges a steering wheel toward a neutral position thereof, a control unit (21) for the system is configured such that an electric motor (9) for providing an assisting force pr... | 03/29/2011 |
| 7913805 | Electric power steering apparatus A rotational angle sensor used in an electric power steering apparatus detects a rotational angle of a motor shaft at a portion on a steering system side, as a motor rotational angle (θm). A MPU sets a base correction amount (Δθ′m) based on a q-axis actual curr... | 03/29/2011 |
| 7909131 | Electric power steering apparatus A microcomputer is provided with an extracting section capable of extracting a specific frequency component from an input signal. The extracting section extracts, from a pinion angle corresponding to a signal indicating the state of a steering system, a frequency co... | 03/22/2011 |
| 7909132 | Apparatus for use in turning steerable vehicle wheels An approved apparatus (10) for turning steerable wheels (14,16) of a vehicle includes a pinion (28) which is disposed in meshing engagement with a rack portion (32) of a steering member (12). A steering column (22) is connec... | 03/22/2011 |
| 7882925 | Vehicle steering apparatus A vehicle steering apparatus utilizing SBW capable of downsizing an expensive turning-power motor, in which a steering mechanism 20 provided with a steering wheel 21 maneuvered by a driver is mechanically separated from a turning mechanism 30 fo... | 02/08/2011 |
| 7878295 | Vehicle steering apparatus A vehicle steering apparatus 1 includes an EPS actuator 17 and an EPS ECU 18 that controls the EPS actuator 17. The EPS actuator 17 applies an assist force that assists a steering operation. A microcomputer 43 of the EPS ECU... | 02/01/2011 |
| 7849957 | Control apparatus for electric power steering An electric power steering apparatus including a steering angle detection part that detects a steering angle of a steering wheel and outputs a steering angle signal, a steering control unit that controls a motor to give an assist torque to the steering wheel, an abn... | 12/14/2010 |
| 7837004 | Steering assisting system for vehicle A steering assisting system has a variable transfer ratio steering apparatus and an electric power steering apparatus. The variable transfer ratio steering apparatus has an electric motor for a rotation transfer ratio varying operation. When a predetermined failure ... | 11/23/2010 |
| 7828112 | Electric power steering device An electric power steering apparatus in which, when an abnormality is generated in an electric power steering apparatus, an assist is reduced smaller than normal when a steering burden is estimated to be small; and the assist can be increased to normal and the steer... | 11/09/2010 |
| 7810608 | Steering apparatus for vehicle An electronic control unit inputs a side slip angle β of a vehicle body. The unit calculates a dynamic zero point δo for reducing a lateral force generated in the vehicle due to the side slip angle β of the vehicle body. The unit calculates a steering angle δa, ... | 10/12/2010 |
| 7806225 | Steering system motor A plurality of magnetic pole bodies, provided on a stator of a steering motor, are divided into two electrically independent groups. Each group includes i) six magnetic pole bodies that are arranged in succession and ii) a corresponding number of magnetic pole bodie... | 10/05/2010 |
| 7793754 | Electric steering system for rapidly increasing damper gain after steering speed exceeds a specific value An electric steering system includes a device for measuring a steering input into a steering system; a device for measuring a steering speed; a section for computing a target current based on the steering input; and a control section for applying a steering power to... | 09/14/2010 |
