| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 81 | Steering system and method of steering a machine | US12262323 | 2008-10-31 | US08055411B2 | 2011-11-08 | Norval P. Thomson; Steven A. Daniel; John V. Mount; Christopher E. Bright |
| A steering system for steering a machine having opposing first and second sides with first and second pairs of rotatably mounted rear wheels disposed along the respective sides and at least one rotatably mounted, spaced front wheel. The system includes at least one first drive unit and at least one second drive unit for rotating the rear wheels of the respective pairs, and a steering input device that provides a signal to a controller that produces drive unit request signals to control the drive units to rotate the associated rear wheels along one side at rotational speeds greater than those along the other side to facilitate turning. | ||||||
| 82 | Method and device for controlling a drive system | US11711267 | 2007-02-27 | US08005600B2 | 2011-08-23 | Norbert Krimbacher |
| The present invention generally relates to a method and a device for controlling a drive system, in particular a hydraulic traveling drive of a crane, a caterpillar, an industrial truck or a construction machine, which has at least one drive unit for an element to be driven. The invention relates to a control device for controlling such drive system, comprising a control signal circuit for providing an actuating signal for adjusting the at least one drive unit in dependence on a specified desired value of an output parameter as well as a specified power limit value for the at least one drive unit. | ||||||
| 83 | Vehicle control systems and methods | US11874130 | 2007-10-17 | US07914022B2 | 2011-03-29 | Richard Ruebusch; Tim Obrzut; Hans Hauser; Axel Schaedler |
| Systems and methods for controlling the speed and direction of vehicles such as tractors. | ||||||
| 84 | FOUR WHEEL DRIVE SYSTEM | US12794369 | 2010-06-04 | US20100307843A1 | 2010-12-09 | T. Towles Lawson, JR. |
| A four wheel drive system for bilaterally symmetric vehicles has separate controlled drive speed and direction for each wheel. Each drive system is operable to independently drive each wheel. The rear wheels of the vehicle are steering wheels which are connected with the vehicle frame for independent rotation about a vertical axis. Steering and driving of the wheels is controlled by a controller. The combination of controlled steering for the rear wheels through many degrees about their vertical axes and individual power to all four wheels provides the vehicle with a zero turning radius for improved mobility as well as improved traction on unstable surfaces. | ||||||
| 85 | VEHICLE STEERING SYSTEM | US12755898 | 2010-04-07 | US20100252355A1 | 2010-10-07 | Norio YAMAZAKI |
| In a steering system for a vehicle incorporated with a rear drive electric motor (5) for driving a pair of rear wheels (3rl, 3rr) that can function as a regenerative brake for the rear wheels, a steering torque control unit (38) reduces a steering assist torque provided by the power steering assist unit (21) when the rear drive electric motor is providing a regenerative braking. When the rear wheels are braked by a regenerative braking action without substantially applying a brake to the front wheel, the vehicle may acquire a temporal oversteer tendency. However, by increasing the effort required to steer the front wheels, such a tendency can be canceled or compensated, and the vehicle operator is enabled to control the vehicle without experiencing any unfamiliar feeling or discomfort. The effort required to steer the front wheels can be increased by decreasing the assist steering torque or providing a reactive steering torque at such a time. | ||||||
| 86 | Hybrid electric tool carrier | US12275402 | 2008-11-21 | US07721517B2 | 2010-05-25 | Kenneth Edward Hunt; Jim Milton Shoemaker; Philip Eugene Ferree |
| A hybrid utility vehicle includes a tool-supporting frame and an electrical power source driven by an engine. Right and left rear wheels independently driven by permanent magnet electric motors and front wheels electrically steerable over a range of approximately 180 degrees operate under the control of a vehicle controller responsive to steering and speed input controls to provide zero turn radius operation with minimum slippage and tire scuffing. Space efficiency provided by the electric. steering and an electrically driven tool deck facilitate a variety of tool mounting configurations including a rear discharge deck with a chute passing under the vehicle frame between the driven wheels. An inverter connected to the electrical power source provides 110/220 volt output. The power source also functions as a high powered, high rpm, low noise starter motor. | ||||||
| 87 | Steering system and method of steering a machine | US12262323 | 2008-10-31 | US20100114430A1 | 2010-05-06 | Norval P. Thomson; Steven A. Daniel; John V. Mount; Christopher E. Bright |
| A steering system for steering a machine having opposing first and second sides with first and second pairs of rotatably mounted rear wheels disposed along the respective sides and at least one rotatably mounted, spaced front wheel. The system includes at least one first drive unit and at least one second drive unit for rotating the rear wheels of the respective pairs, and a steering input device that provides a signal to a controller that produces drive unit request signals to control the drive units to rotate the associated rear wheels along one side at rotational speeds greater than those along the other side to facilitate turning. | ||||||
| 88 | Power steering system | US11599515 | 2006-11-15 | US07703561B2 | 2010-04-27 | Ayumu Miyajima; Toru Takahashi; Naoshi Yamaguchi; Makoto Yamakado; Masanori Ichinose; Takehiko Kowatari; Atsushi Yokoyama |
| In order to reduce a steering torque during stoppage of a vehicle, according to the invention, opposite drive torques in normal and reverse directions are applied to a left rear wheel and a right rear wheel when a driver steers a steering wheel in a state where the vehicle stops, whereby a moment to turn the vehicle is generated, and an assist torque for steering the steering wheel is generated. | ||||||
| 89 | Four wheel drive system | US11467674 | 2006-08-28 | US07597160B2 | 2009-10-06 | Thomas Towles Lawson, Jr. |
| A four wheel drive system for bilaterally symmetric vehicles is characterized by separate drive systems for the front and rear wheels. Each drive system is operable to independently drive each wheel. The rear wheels of the vehicle are steering wheels which are connected with the vehicle frame for independent rotation about a vertical axis. Steering and driving of the wheels is controlled by a controller. The combination of independent steering for the rear wheels and independent powering of all four wheels provides the vehicle with a zero turning radius for improved mobility as well as improved traction on unstable surfaces. | ||||||
| 90 | Electrically driven vehicle | US11764828 | 2007-06-19 | US07583036B2 | 2009-09-01 | Akira Kikuchi; Takashi Ikimi; Keizo Shimada; Naoshi Sugawara |
| In an electrically driven vehicle having a controller, the vehicle has a steering angle sensor for outputting a detected value of a steering angle of the vehicle, the controller includes a first torque order pattern along which a torque order for a first electric motor is determined and a second torque order pattern along which a torque order for a second electric motor is determined, and the first and second torque order pattern are modified on the basis of the detected value of the steering angle so that the torque order determined along the second torque order pattern is greater than the torque order determined along the first torque order pattern under the identical velocity when the vehicle turns to the left, and the torque order determined along the first torque order pattern is greater than the torque order determined along the second torque order pattern under the identical velocity when the vehicle turns to the right. | ||||||
| 91 | Apparatuses and Methods for Providing Hybrid Steering for a Vehicle | US12022688 | 2008-01-30 | US20090188728A1 | 2009-07-30 | Christopher M. Osborne |
| Steering control apparatuses and methods for a vehicle are provided. A steering control apparatus can include a steering shaft drivingly linked to a pair of front wheels of a vehicle. A movable steering handle can also be provided and disposed about the steering shaft, with the steering handle being capable of selectively turning the pair of front wheels to direct the movement of the vehicle. A first and second brake clutch mechanism for engaging and disengaging first and second drive wheels, respectively, can be provided. First and second brake clutch control levers can selectively control the first and second brake clutch mechanism, respectively, to engage and disengage the first and second drive wheels. The steering handle can include a coupling base. The coupling base can engage the steering shaft to permit decoupling of the steering handle from the steering shaft allowing the steering shaft and the linked pair of front wheels to turn free of the steering handle while the steering handle is still disposed about the steering shaft. | ||||||
| 92 | Steering Assist For A Rear Caster Wheel On A Work Machine | US11957800 | 2007-12-17 | US20090152828A1 | 2009-06-18 | Thomas Daryl Bebernes; Eric Ryan Lang; David Vincent Rotole; Timothy K. Dreger |
| A work machine includes a frame, at least one drive wheel carried by the frame, at least one caster wheel assembly carried by the frame, and at least one turn assist arrangement. Each turn assist arrangement is coupled between the frame and a corresponding caster wheel assembly. Each turn assist arrangement is configured to bias the corresponding caster wheel assembly during an operator commanded turn, and to be overridden by forces applied by the ground to the caster wheel assembly. | ||||||
| 93 | Vehicle improved in steering | US11189993 | 2005-07-27 | US07431123B2 | 2008-10-07 | Koji Irikura; Norihiro Ishii; Ryota Ohashi; Kenichi Takada; Hirohiko Kawada; Robert Abend; Keith J. Andrews; Toshiyuki Hasegawa; Hiroaki Shimizu |
| A vehicle including an integral transaxle apparatus with axles, a driving hydrostatic transmission (HST), a steering HST, and a differential unit. Driving operating means for slanting operation of a first movable swash plate of the variable displacement driving hydraulic pump for switching the travelling direction between forward and backward and for changing the travelling speed, and steering operating means for slanting operation of a second movable swash plate of the variable displacement steering hydraulic pump so as to determine the leftward and rightward cornering angle are provided. The steering hydraulic motor has a third movable swash plate interlocking with the driving operating means so that the slanting direction of the third movable swash plate is changed according to the operation of the driving operating means, whereby the vehicle turns laterally in the same direction in response to the steering operating means whether the vehicle travels forward or backward. | ||||||
| 94 | VEHICLE CONTROL SYSTEMS AND METHODS | US11874130 | 2007-10-17 | US20080217092A1 | 2008-09-11 | Richard Ruebusch; Tim Obrzut; Hans Hauser; Axel Schaedler |
| Systems and methods for controlling the speed and direction of vehicles such as tractors. | ||||||
| 95 | Steering apparatus for electric industrial vehicle | US10740341 | 2003-12-17 | US07357215B2 | 2008-04-15 | Seiji Nakashima |
| A controller controls right and left wheel drive motors based on a tire angle detected by a tire angle sensor such that the angular velocities of a pair of drive wheels about the center of a turn of the vehicle are equal to each other. The controller determines a steering speed of a steered wheel at the time a steering wheel is turned, from the tire angle detected by the tire angle sensor. Based on the steering speed, the controller controls a hydraulic pressure control motor, enabling a hydraulic pump to supply working fluid at a rate corresponding to the steering speed through a priority valve to a steering cylinder. With this arrangement, the vehicle is allowed to make a smooth turn. | ||||||
| 96 | Vehicle having twin transmissions for driving respective wheels | US11327415 | 2006-01-09 | US07331412B2 | 2008-02-19 | Koji Irikura |
| A vehicle comprises a vehicle frame, a prime mover mounted on the vehicle frame, a laterally turnable wheel disposed at one side of the vehicle frame, a pair of drive wheels disposed at the other side of the vehicle frame, a steering operation device, a traveling operation device for setting the traveling speed and direction of the vehicle, and a pair of transmissions for controlling the rotary speed and direction of the respective drive wheels. The transmissions are operationally connected with the steering operation device so as to create a difference of rotary speed between the drive wheels according to operation of the steering operation device. The transmissions are operationally connected with the traveling operation device so as to drive the drive wheels in a common rotary direction from their stationary state according to operation of the traveling operation device. A clutch is interposed between the transmissions so as to connect the drive wheels with each other when the steering operation device is set in a straight traveling position. Based on setting of a switching device for switching the traveling direction of the vehicle between forward and rearward, a reverser decides the rotational direction of the drive wheels. | ||||||
| 97 | Differential Steering and Traction Control For Electrically Propelled Mower | US11747353 | 2007-05-11 | US20070295545A1 | 2007-12-27 | Bernard Romig; Jitendra Vaidya; Brent Rinholm; Randall Griffin; Russell Thacher |
| A differential steering and traction control system for an electrically propelled mower. Each of the front wheels has an electric motor wheel drive, and each rear wheel may have an electric steering motor. The operator's station has a steering wheel and a speed control. An electronic controller provides steering commands to the electric steering motor and separate speed commands to each electric motor wheel drive based on the angle of the rear wheel and the position of the speed control. | ||||||
| 98 | Method to Reduce the Turn Radius of Motor Vehicles Utilizing Automatic Single Side Rear Brake Application | US11419012 | 2006-05-18 | US20070267916A1 | 2007-11-22 | John M. Mackovjak; Robert L. Nisonger; Mario B. Kennedy |
| A method of selective, automatic application of one rear brake of a motor vehicle under appropriate vehicle operating conditions in response to intent of a driver to make a turn, whereby the rotational speed of the selected braked rear wheel is reduced so as to reduce the turn radius of the vehicle. Vehicle sensor outputs and calculated parameters in conjunction with vehicle systems such as, but not limited to, ESC, ABS, and traction control are used to determine if appropriate vehicle operating conditions exist to actuate the present invention. The method of the present invention is implemented via an algorithmic control, preferably within an ESC system. | ||||||
| 99 | Method and device for controlling a drive system | US11711267 | 2007-02-27 | US20070219694A1 | 2007-09-20 | Norbert Krimbacher |
| The present invention generally relates to a method and a device for controlling a drive system, in particular a hydraulic traveling drive of a crane, a caterpillar, an industrial truck or a construction machine, which has at least one drive unit for an element to be driven. The invention on the one hand relates to a method, in which a desired value of an output parameter as well as a power limit value for the at least one drive unit are specified and in dependence on the specified desired value of the output parameter and the specified power limit value at least one actuating signal is provided for the at least one drive unit. The invention in particular relates to a method, in which at least two separate drive units are provided for a left drive wheel and a right drive wheel, wherein one desired speed each is provided for the two wheels and in dependence on the specified desired speeds at least one actuating signal is provided for the drive units. Furthermore, the invention relates to a control device for controlling such drive system, comprising a control signal circuit for providing an actuating signal for adjusting the at least one drive unit in dependence on a specified desired value of an output parameter as well as a specified power limit value for the at least one drive unit. Finally, the invention relates to a crane, a caterpillar or a construction machine with such a control device. On the one hand, there is proposed a control which effects an intelligent differential lock between a left drive wheel and a right drive wheel, which even during cornering prevents the driven wheels from being strained against each other and nevertheless ensures a speed coupling of the two wheels even in the case of traction problems. On the other hand, a control is proposed in accordance with a further aspect of the invention, which reliably prevents or limits a slip of a drive wheel or element and thereby increases the efficiency of the drive and reduces wear. In accordance with a first aspect of the present invention, the specified power limit value, in dependence on which the at least one actuating signal is provided for the at least one drive unit, is reduced in dependence on a matching of the specified desired value of the output parameter with a current actual value of said output parameter. If the difference between desired value and actual value of the output parameter exceeds a predetermined tolerance threshold, the power limit value is reduced correspondingly, whereby the actuating signal is corrected correspondingly. | ||||||
| 100 | Power steering system | US11599515 | 2006-11-15 | US20070176488A1 | 2007-08-02 | Ayumu Miyajima; Toru Takahashi; Naoshi Yamaguchi; Makoto Yamakado; Masanori Ichinose; Takehiko Kowatari; Atsushi Yokoyama |
| In order to reduce a steering torque during stoppage of a vehicle, according to the invention, opposite drive torques in normal and reverse directions are applied to a left rear wheel and a right rear wheel when a driver steers a steering wheel in a state where the vehicle stops, whereby a moment to turn the vehicle is generated, and an assist torque for steering the steering wheel is generated. | ||||||
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