650results about How to "Improve driving performance" patented technology

The invention provides a torque changer for prolong the service lives of engine and transmitter. The invention comprises an input axle 1, a connector 3, and an output axle 4. The input axle 1 and the output axle 4 are arranged with an input tooth ring 21, an output tooth ring 22, a planet gear 23, a public output planet support 24, a connecting tooth ring 25, a large gear 26, a public planet support 27, a connecting gear 28, and a small gear 29 between them. The input tooth ring 21 is connected to the input axle 1, and connected to the public output planet support 24 and the connecting tooth ring 25 via the planet gear 23. The connecting tooth ring 25 is connected to the output tooth ring 22 and the public output planet support 24 via the planet gear 23. The output tooth ring 22 is connected to the large gear 26. The large gea3 26 is connected to the public planet support 27 and the connecting gear 28 via the planet gear 23. The connecting gear 28 via the planet gear 23 is connected to the public planet support 27 and the small gear 29. The small gear 29 is connected to the external elements. The public planet support 27 is connected to the input tooth ring 21 via the connector 3. The public output planet support 24 is connected to the output axle 4.

The invention provides an intelligent photovoltaic array washing car used for washing photovoltaic arrays of a large-scale ground photovoltaic power station. A washing head supporting and locating unit and a power unit are arranged on the head portion and the tail portion of a crawler base respectively, a water storage unit is arranged adjacent to the power unit, and a washing head unit is provided with range finder sensors used for measuring the distance between the washing head unit and solar cell panels; the washing head supporting and locating unit comprises a movable base capable of rotating and transversely moving and a working arm set provided with a main arm and an end arm, wherein the main arm and the end arm can pitch respectively; a water pump of a water supply unit is driven by a hydraulic motor; a computer is used as a control kernel of a main control module of an operation control unit; a pair of proportional directional valves of the hydraulic control unit controls two base crawler traveling motors, and other directional valves are electromagnetic directional valves controlled by the main control module. According to the intelligent photovoltaic array washing car, the position and the posture of the washing head unit relative to photovoltaic array panels and the position and the posture of a car body relative to the photovoltaic arrays can be automatically controlled, and the intelligent photovoltaic array washing car is intelligent, efficient, flexible in operation, high in adaptability, easy and convenient to operate, concise in structure and good in washing effect.

A cleaning robot includes a non-circular main body, a moving assembly mounted on a bottom surface of the main body to perform forward movement, backward movement and rotation of the main body, a cleaning tool assembly mounted on the bottom surface of the main body to clean a floor, a detector to detect an obstacle around the main body, and a controller to determine whether an obstacle is present in a forward direction of the main body based on a detection signal of the detector, control the rotation of the main body to determine whether the main body rotates by a predetermined angle or more upon determining that the obstacle is present in the forward direction, and determine that the main body is in a stuck state to control the backward movement of the main body if the main body rotates by the predetermined angle or less.

The invention relates to a power system of an oil-electricity four-drive hybrid electric vehicle and a control method thereof. The system takes a motor and a dynamo as impendent power sources for driving front driving wheels and rear driving wheels of a vehicle respectively, adopts a motor controller to control the motor to operate, adopts a dynamo controller to control the dynamo to operate, andadopts a whole vehicle controller to control the dynamo controller and the motor controller to operate; according to equipment parameters and operating parameters of the vehicle, the whole vehicle controller determines a drive mode of the vehicle and the switching among different drive modes; and a control mode comprises a self-check mode, a pure motor drive mode, a pure dynamo drive mode, a motor single drive mode, a dynamo single drive mode, a motor-dynamo double-drive mode and a power failure mode. The power system can farthest exert the advantages of the motor and the dynamo, meets requirements under different conditions, and achieves the aims of reducing operating expense, saving energy and protecting environment.

The invention relates to a method for fulfilling a slope starting assist control function of an electric automobile. The method comprises the following steps of (1), determining an activating condition; entering a to-be-activated state of the function when a driver steps on a brake pedal, the automobile is in a static state, but a hand brake is not pulled upward and the gear of the automobile is a forward gear; and activating the slope starting assist control function if the automobile begins to slide after the driver releases the brake pedal; and (2), correcting the target value of the torque of a driving motor, rapidly increasing the output torque of the motor after the slope starting function is activated so that the automobile does not slide, and keeping the torque output to enable the automobile to be static in situ. When the driver steps down the accelerating pedal, the slope starting assist control function is withdrawn automatically, and the automobile is stably started on a slope. By accurately controlling the torque output of the motor when the automobile is started on the abrupt slope, sliding of the automobile is avoided under the condition that the hand brake is not pulled upwards, the driver can calmly move a foot from the brake pedal to the accelerating pedal, and slope starting is finished.

The invention provides an intelligent vehicle trajectory planning and tracking combined control method. The method comprises the following steps: parameterizing a road; establishing a transverse and longitudinal vehicle dynamic model; expanding a vehicle model, and forming a prediction model through linearization, discretization and incremental conversion; designing an objective function of a trajectory planning and tracking joint control problem according to a model prediction control method; obtaining a current vehicle state, and updating matrix parameters in the prediction model; establishing road boundary, driving stability and state quantity constraints according to the vehicle state and the predicted output state of the previous moment; and converting the problem into a quadratic programming problem form, solving an optimal control increment combination, and acting the optimal front wheel rotation angle [delta]* and the longitudinal control value D* on the autonomous vehicle. According to the invention, the combined processing of optimal driving line planning and control is realized, the complexity of an automatic driving module is reduced, the overall memory occupation and processing time are reduced, and the control stability of the automatic driving racing car is improved.

The invention provides a wheel-tracked freely switching gear train device which comprises a wheel rim deformation system and a track system, wherein the wheel rim deformation system comprises a spindle, a bearing, a wheel rim bracket, a first clutch device, a telescopic mechanism, a wheel rim connector, a first driving gear, a third clutch device and a segmented wheel rim arc, wherein the first clutch device is installed on the spindle to control the wheel rim bracket and is disconnected from or connected with the spindle, the telescopic mechanism is installed on the wheel rim bracket, a first driven gear is installed at one end of the telescopic mechanism, the wheel rim connector is fixedly connected with the other end of the telescopic mechanism, the first driving gear is in sleeved on the spindle in an idle way, the third clutch device is fixedly connected with the first driving gear, one end of the segmented wheel rim arc is connected with the wheel rim bracket, the other end of the segmented wheel rim arc is connected with the wheel rim connector, and the first driven gear is meshed with the first driving gear. The wheel-tracked freely switching gear train device realizes free switching between a round wheel and a track in a vehicle walking device so that a vehicle can switch the round wheel or the track at any time according to different road conditions, thereby enhancing the vehicle driving performance and increasing a vehicle application range.

Disclosed herein are a robot cleaner that has an improved traveling performance, and a method of controlling traveling thereof. The robot cleaner allows driving wheels, which move the robot cleaner, and a brush unit, which sweeps dust on a floor, to be rotated in the same direction.

A drive mechanism and an imaging device according to the present invention each include: an ultrasonic linear actuator 4 provided with a rod 42 that moves reciprocally in response to expansion / contraction of a piezoelectric element 41 and a first group unit 2 serving as an example of a moving body that engages with the rod 42 with a prescribed frictional force. The moving body (first group unit 2) is provided with a holding member 24, a pressing member 30 or other member that engages with the rod 42 in such a way that fluctuation in the frictional force is suppressed, and drive performance is stabilized. As a consequence, the drive mechanism and the imaging device according to the present invention can suppress fluctuation in the frictional force (gripping force) of the moving body in the ultrasonic linear actuator 4, making it possible to stabilize drive performance.

The hybrid vehicle transfers power between the two motors, releases a coupling between one of the motors and the drive shaft, adjusts the rotation speed of one of the motors which is released from the coupling to the drive shaft by the transmission so as to enable drive source element connection, and connects the clutch as well as cranks the engine by either one or the other motor when the engine is started while the clutch is released, the engine is stopped, both the motors are coupled to the drive shaft as well as at least one of the motors is caused to output power.

The invention provides a lane change decision-making method and device for an autonomous vehicle. The method includes the following steps: defining a candidate strategy set for a lane change decisionof the autonomous vehicle; and determining a reward value of each strategy in the candidate strategy set for the lane change decision of the autonomous vehicle by using an evaluation function, and selecting the strategy with the maximum reward value as the lane change decision. The technical scheme provided by the invention mainly improves the decision-making ability of the autonomous vehicle, andespecially has a good decision-making effect for complicated automobile driving scenes.

A vehicular power-transmission control system comprises a continuously variable transmission CVT, which transmits the output of an engine E to wheels, a starting clutch 5, which controls the transmission of power in the continuously variable transmission, an electrical motor generator M, which can assist the engine in rotational drive, and a hydraulic pump P, which is connected to the output shaft of the engine. When the vehicle, which has come into a halt with the engine consequently stopped in an idling elimination control, is to be restarted, the power-transmission control system controls the electrical motor generator to rotate the output shaft of the engine, to which fuel supply is not allowed, thereby to drive the pump. Thereafter, when the starting clutch receiving a hydraulic pressure from the hydraulic pump starts its engagement, the power-transmission control system starts the operation of the engine.

A plurality of thin film transistors provided in a peripheral region are first staggered thin film transistors where a first channel layer configured of low-temperature polysilicon is included, and the first channel layer is not interposed between a first source electrode and a first gate electrode, and between a first drain electrode and the first gate electrode. A plurality of thin film transistors provided in a display region are second staggered thin film transistors where a second channel layer configured of an oxide semiconductor is included, and the second channel layer is not interposed between a second source electrode and a second gate electrode, and between a second drain electrode and the second gate electrode. The first thin film transistor is located below the second thin film transistor.

The invention discloses a central-shaft torque sensing device for an electric bicycle. The central-shaft torque sensing device comprises a central shaft assembled in a five-way tube via a bearing, cranks fixed on the central shaft, a chain wheel sleeved on the central shaft, and an elastic torsion member connected with the central shaft and the chain wheel, wherein left and right torque sensing magnetic steel capable of generating peripheral relative displacement during the torsion of the elastic torsion member are fixed on the elastic torsion member; a magnetic induction coil wrapping the left and right torque sensing magnetic steel is further sleeved outside the elastic torsion member and is electrically connected with a motor control circuit board via a circuit board between the central shaft and the inner wall of the five-way tube; and the motor control circuit board is electrically connected with a motor of the electric bicycle. The device is high in induction sensitivity and accuracy, and capable of accurately detecting torque signals transmitted by the left crank and the right crank in a non-contact manner via a magneto-electricity conversion mode.

The invention discloses an air foam slug flow driving process for the oil recovery of an oil field, comprising the following steps of: 1 determining type and proportion of the used foam liquid, slug volume ratio and on-site injection manner of the used air and the foam liquid during the air foam slug flow driving by an indoor test; and 2 carrying out the air foam liquid slug flow driving on site,wherein the oil flow driving process comprises the following steps of: preparation before the oil flow driving; slugging a pad fluid; slugging the air foam; alternatively injecting the air and foam liquid slug from a specially manufactured device to a target well for many times; and continuously carrying out the oil flow driving on the target well by a water or air injection method according to the dynamic change condition of the target well and a conventional oil displacement method after the injection of the air foam slug is finished. The invention has the advantages of reasonable design, simple and convenient construction steps, good use effect and convenience of realizing, can effectively solve various practical problems of poor water injection effect, difficult improvement on the water injection capability, poor oil flow driving efficiency and the like during the ultralow reservoir waterflooding.

The invention discloses a multi-wheel mobile platform. The multi-wheel mobile platform comprises a car frame, and at least two pairs of wheel-type travelling mechanisms are installed on the car frame,wherein each wheel-type travelling mechanism comprises a master pin, a steering knuckle arm and a wheel, the master pins and the steering knuckle arms are installed on the inner sides of the wheels,each pair of the wheel-type travelling mechanisms are symmetrically arranged on the two sides of the car frame, active suspension is installed between the wheel-type travelling mechanisms and the carframe, the wheel-type travelling mechanisms and the car frame are connected through the active suspension, the multi-wheel mobile platform further comprises at least two wheel track changing assemblies, and each wheel track changing assembly is connected with the two active suspension on one pair of the wheel-type travelling mechanisms. The multi-wheel mobile platform has the advantages that the structure is simple, and chassis adjustment can be conducted according to road conditions so that the overall mobility of a car can be improved.

A circumferential sipe extends continuously in the circumferential direction of the tire in the center region of the tread surface section of a rib defined between circumferential grooves. Widthwise sipes are disposed at prescribed intervals in the circumferential direction of the tire in the tread surface section, the widthwise sipes extending in the widthwise direction of the tire in crossing relationship to the circumferential sipe, the widthwise sipes each having opposing terminal ends open to the circumferential grooves. The circumferential sipe changes in depth periodically in such a manner that the circumferential sipe is shallow between adjacent widthwise sipes. The widthwise sipes changes in depth in such a manner that they are greater in depth in the center region and end regions of the tread surface section.

Systems and methods are provided to enhance the driving performance of a leanable vehicle such as a motorcycle. The system includes a leanable vehicle interface to receive input from a driver (e.g., a human or a robotic driver) and a sensor interface to receive inputs from sensors on the leanable vehicle. The system also includes a computing module to use the sensor data in combination with data from the leanable vehicle interface to calculate the driver behavior to produce a future desired performance, based on a specified aggressiveness, so that the performance of the leanable vehicle is optimized. The calculation may be done using a machine learning method, a rule based method, or both.

The invention discloses a battery box for a vehicle, a vehicle body component and an automobile. The battery box for the vehicle comprises a first battery accommodation part having a first battery space for accommodating the battery, a second battery accommodation part which is apart from the first battery accommodation part and has a second battery space for accommodating the battery, and a third battery accommodation part which is connected with the first battery accommodation part and the second battery accommodation part, wherein a space between boxes for accommodating feet of a passenger is formed at the two sides of the third battery accommodation part between the first battery accommodation part and the second battery accommodation part; and the third battery accommodation part has a third battery space which is communicated with the first second battery space and the second battery space. The vehicle body component comprises a floor covering member which is provided with an accommodation part for accommodating the battery box for the vehicle, wherein the accommodation part is below the space of the passenger; and a floor beam structure which is fixed on the lower portion of the floor covering member and forms the boundary for accommodating the battery box for the vehicle. Therefore, requirements for relatively high range and safe reliability can be met.

A bogie for a vehicle of a guide rail type which is guided by guide wheels that rotate while keeping contact with a guide rail arranged along a guideway of the vehicle, comprises: a guide frame which includes a pair of transverse beams and a connecting member arranged between the pair of the transverse beams, each of the traverse beams being equipped with the guide wheels rotatably on both ends thereof; an axle which is supported on a non-turning part of the bogie such that the axle is capable of turning; and running wheels which are attached to both ends of the axle, wherein the running wheels are rigidly fixed to the axle and the guide frame is fixed to the axle so as to steer the guide frame, the axle and the running wheels integrally.

The invention discloses a combined counterweight device and a crane using the same and aims to solve a problem that the prior counterweight device cannot move backwards and forwards. The combined counterweight device of the invention comprises a counterweight body, two horizontal slide rails, a counterweight bracket, two vertical oil cylinders and two horizontal oil cylinders, wherein the vertical oil cylinders are fixed on the counterweight bracket through the two vertical oil cylinders, and the counterweight bracket can slide backwards and forwards along the horizontal slide rails fixedly arranged on two sides of the tail part of a turntable under the action of the two horizontal oil cylinders. The key design points of the combined counterweight device and the crane using the same include: the counterweight body can move backwards and forwards to effectively improve the length of the big arm and the vehicle stability under a large amplitude working condition of the crane and to reduce the vehicle length to impact the structure of the crane respectively; and at the same time, the crane has a relatively small radius when driving on a curve, so the rideability of the crane is greatly improved.

The present invention relates to a control device for an automatic transmission and a method for implementing a failsafe function of the automatic transmission, which can properly protect the automatic transmission and ensure a certain degree of running performance even if the state of the shifting operation performed by the operator cannot be grasped. The control device has: an operating lever (1) for setting the shift range of the automatic transmission, a suppression switch (2) for outputting a range signal corresponding to the shift range as a control signal, and a vehicle speed sensor ( 3) At the same time, it also has an engine control device (10), which has a fault judging device (11) for judging the fault state of the suppression switch (2) based on the control signal, and suppresses the output of the engine according to the driving speed of the vehicle during the fault state. Torque engine torque suppression device (12).

The invention discloses a tread rubber composition of an all-steel truck snow tire. The tread rubber composition is characterized by being composed of, by weight, 42-62 parts of natural rubber, 15-35 parts of oil-extended neodymium-based butadiene rubber, 25-34 parts of solution-polymerized styrene-butadiene rubber, 23-38 parts of high-dispersion white carbon black, 30-55 parts of carbon black N220, 2-4 parts of coupling agent liquid Si69, 1-10 parts of aromatic oil, 2-8 parts of zinc oxide, 0.5-3 parts of stearic acid, 2-4 parts of antiager 6PPD, 1.5-3 parts of antiager RD, 2-5 parts of microcrystalline wax, 1-3.5 parts of oil-extended sulfur, 1-2.5 parts of accelerator NS, 0.1-1 part of accelerator DPG and 0.1-0.5 part of scorch retarder CTP. By the adoption of the solution-polymerized styrene-butadiene rubber with the Tg appropriate to that of natural rubber, the neodymium-based rare-earth butadiene rubber with the lower Tg and white carbon black commonly used for semi-steel snow tires, at a specific proportion, the tire is moderate in tread hardness and good in elasticity, and has the advantages of excellent snow slip resistance, good snowfield road holding, high snowfield indexes and the like in a freezing snowfield.

The invention discloses a multi-objective hierarchical collaborative control and optimization method for vehicles with driving intentions. The method comprises the following steps: S1, establishing adriver steering intention recognition model; S2, establishing a nonlinear eight-degree-of-freedom vehicle preview prediction model; S3, establishing a predicted load transfer rate PLTR based on the preview driver model; S4, establishing a multi-objective hierarchical coordinated control system for the whole vehicle; S5, performing multi-objective genetic algorithm optimization with vehicle path tracking and rollover stability as the objective function. The method of the invention is simple, easy to implement and has good application prospects.

The invention relates to a balance car which comprises a first wheel, a second wheel, a connecting shaft, a first pedal mechanism, a second pedal mechanism, angle motion detection mechanisms and control mechanisms. The first wheel and the second wheel can independent from each other and are arranged on the connecting shaft in a rotatable mode. The first pedal mechanism and the second pedal mechanism are arranged on the connecting shaft in a rotatable mode. The first pedal mechanism is connected with the first wheel in a matched mode, and the second pedal mechanism is connected with the second wheel in a matched mode. The angle motion detection mechanisms are arranged on the first pedal mechanism and the second pedal mechanism respectively. The control mechanisms are in communication connection with the angle motion detection mechanisms. The balance car has the advantages of being convenient to control, easy to popularize, high in safety and small in size.

Electric bicycle central axle torque speed sense device comprises a central axle (4) assembled in a five-way tube, a left crank (13) and a right crank (14) fixed on each end of the central axle (4) and a chain wheel (16) sleeved on the central axle (4), and the device is characterized in that: the central axle (4) is sleeved with a torque sleeve (5) which can generate circumferential deformation when bearing circumferential torsional force, one end of torque sleeve (5) is fixed to the central axle (4), the other end is fixed to the chain wheel (16); a circle of magnetism conductive alloy sheet (20) arranged on and abut closely to the torque sleeve are fixed on the outer tube wall of said torque sleeve (5), the magnetism conductive alloy sheet (20) is densely provided with multiple holes (17), coils (19) used for detecting magnetism changes are arranged on the peripheries of the magnetism conductive alloy sheet (20), the coils (19) are connected to motor controller via a signal processor, a speed induction Hall (18) connected with said signal processor is further arranged in the five-way tube, and a speed induction magnetic steel (12) corresponding to the speed-sensitive Hall (18) is fixed on the central axle (6). The structure of the present invention is smart and reasonable in structure, and has induction sensitivity and high accuracy.

The invention provides a four-wheel type indoor mobile robot, and relates to a robot. The four-wheel type indoor mobile robot comprises a chassis, two driving wheels, two universal wheels, a controller and a lithium battery. The two driving wheels are two independent driving wheels adopting a wheel hub type DC brushless motor with a Hall effect sensor to act as a driving motor. The driving wheels and the driving motors are integrated. The controller adopts a full-bridge PWMDC / DC converter working in a bipolar mode to drive the DC brushless motors so that disadvantages in the prior art that DC brush motors are slow in commutation speed and high in noise, and the motors are liable to be damaged when the motors are in a wear and tear state for a long time can be overcome.

An electric vehicle is provided which allows an output torque to be automatically adjusted during travelling even when there is a difference in output characteristic between two traction motor units (6, 6) that independently drive left and right drive wheels (2). The electric vehicle includes the motor units; a torque command unit (23) that outputs torque command values to the motor units; a torque difference occurrence determiner (31) that determines that a difference has occurred between actual driving forces TL, TR of the respective drive wheels (2) even when the torque command unit applies the same torque command values TL*, TR* to the motor units; and a driving force difference reducer (32) that, if the determiner determines that a driving force difference not less than a set value has occurred between the drive wheels, causes control of reducing the driving force difference to be performed during travelling

The invention discloses an electric bicycle center shaft force moment sensing device which comprises a center shaft arranged in a five-way tube through a bearing, a crank fixed on the center shaft and a crankset sleeved on the center shaft. The electric bicycle center shaft force moment sensing device is characterized by further comprising a force moment sensing Hall component. The component comprises an elastic twist component connected with the center shaft and the crankset. Force moment sensing magnetic steel generating circumferential displacement through twist of the elastic twist component is fixed on the elastic twist component. The electric bicycle center shaft force moment sensing device further comprises a force moment sensing Hall element corresponding to the force moment sensing magnetic steel and fixed on the center shaft. The force moment sensing Hall element is electrically connected with a motor control circuit board through a collecting ring wire outlet device arranged between the center shaft and an inner wall of the five-way tube and the motor control circuit board is electrically connected with a motor. The electric bicycle center shaft force moment sensing device is high in flexibility and accuracy and capable of detecting static torque and dynamic torque, guaranteeing zero start when an electric bicycle is ridden and maintaining stable riding performance.