38results about How to "Reduce yaw" patented technology

A dual lane, multi-axle transport vehicle for moving heavy loads includes a forward module mounted on a plurality of axles and a rearward module mounted on a plurality of axles. The forward module is mechanically connected to the rearward module for providing a dual lane transport body. The forward module and the rearward module of the transport body each have a single central spine wherein the axles of both the forward module and the rearward module are each attached to the corresponding single central spine. The axles of both the forward module and the rearward module have an axle spacing of at least six feet. A hydraulic suspension is provided for dynamically stabilizing the axles for reducing axle yaw. An axle steering system having a plurality of steering rods controls the position of the axles of both the forward module and the rearward module.

A lateral glide stationary elliptical exercise device (10) with foot support platform (90) yaw control. Yaw control is achieved by a four bar dual rocker linkage yaw control mechanism that includes (i) a foot link (70) with a pair of laterally offset first (p5) and second (p9) connection points constrained to move through generally elliptical paths within parasagittal planes, (ii) a glide link (80) pivotably connected at a first end to the first connection point (p5), (iii) a drawbar (100) pivotably connected at a first end to the second connection point (p9), and (iv) a foot support platform (90) pivotably connected proximate a second end of the glide link (80) and proximate a second end of the drawbar (100).

The invention discloses a double-drive vehicle acceleration variation curvature synchronization method. The double-drive vehicle acceleration variation curvature synchronization method comprises the steps of detecting a first average acceleration of a first wheel set and a second average acceleration of a second wheel set in a current period; calculating a first average acceleration curvature according to the first average acceleration and calculating a second average acceleration curvature according to the second average acceleration; judging whether the curvature ratio between the first average acceleration curvature and the second average acceleration curvature is larger than a first preset value or not; and if the curvature ratio between the first average acceleration curvature and thesecond average acceleration curvature is larger than the first preset value, issuing an acceleration adjusting instruction to adjust the first average acceleration or the second average accelerationof the next period to make the curvature ratio be less than or equal to a second preset value. According to the double-drive vehicle acceleration variation curvature synchronization method, the problem that vehicle yawing or driver error-reporting caused by mechanical structure of the vehicle can be solved. The invention further discloses a double-drive vehicle acceleration variation curvature synchronization system, a computer readable storage medium and a driver of the double-drive vehicle; and the double-drive vehicle acceleration variation curvature synchronization system, the computer readable storage medium and the driver of the double-drive vehicle have the above advantageous effects.

The invention discloses a crushing loading roadway repairing machine for a coal mine. A body part comprises a workbench, a drive device, a walking device and an oil tank; an execution mechanism mainly comprises an excavation arm and an operation head; a revolving device is arranged between the excavation arm and the workbench; the excavation arm comprises a big arm, a small arm and a movable arm; a breaking hammer is mounted in the small arm, and a movable arm oil cylinder is arranged above the small arm; the movable arm oil cylinder is communicated with an oil way control valve of the execution mechanism through a central joint and an oil pipe; a big arm oil cylinder I and a big arm oil cylinder II are communicated with an oil way control valve of a control device through the central joint and the oil pipe; the drive device is a hydraulic drive device; the hydraulic drive device comprises an explosion-proof motor and an oil pump; an output end of the explosion-proof motor is in transmission connection with an output shaft of the oil pump through a coupling; an output port of the oil pump is communicated with an input port of a control valve through an oil way; the oil way control valve is a pilot multi-way valve; the pilot multi-way valve is arranged on a bracket of the workbench; and an operation handle of the pilot multi-way valve is arranged above the bracket.

The invention provides a motor torque control method and a wheel rim motor distributed drive system. The method is applied to a vehicle control unit in the system. The system further comprises two motor systems. The motor systems comprise motors. By means of the method, the following motor torque control process is executed to the motor systems at the same time. Based on current accelerator pedalsignals and the current rotating speeds of the motors in the motor systems, torque basic values of the motors in the motor systems are calculated; the torque basic values of the motors are corrected,and torque corrected values of the motors are obtained; the torque corrected values of the motors are limited through the current vehicle speed of a vehicle and the motor torque recently sent to the other motor system by the vehicle control unit historically, and torque limited values of the motors are obtained; the motor torque is determined from the torque limited values and the torque correctedvalues of the motors and input in the motor systems to which the motors belong, and therefore the motor systems are controlled to respond to the motor torque to control the motors in the motor systems to drive driving wheels, used for being driven by the motor systems, on the vehicle.

A stability control system of a vehicle utilizing an electronic control unit that detects a yaw condition while each of the wheel brakes are actuated by EBCM and the wheel speeds are zero. An electronic control unit includes an electronic braking control module that controls actuation and de-actuation of vehicle brakes on an inclined surface. A yaw condition is identified while all vehicle brakes are actuated on the inclined surface and each wheel speed is zero. The electronic control unit identifies which uphill wheel is leading a direction of the yaw and identifies a wheel of an opposing axle diagonal to the identified uphill wheel. The electronic control unit in cooperation with the electronic braking control module de-actuates the vehicle brakes of the identified uphill wheel and diagonal wheel to increase a side friction to the identified diagonal wheels to reduce further yawing of the vehicle.