1086results about How to "Improve driving stability" patented technology

Provided is an organic electroluminescent device (organic EL device) that is improved in luminous efficiency, fully secured of driving stability, and simply constructed. The EL device has a light-emitting layer disposed between an anode and a cathode stacked one upon another on a substrate and the light-emitting layer comprises a phosphorescent dopant and an indolocarbazole derivative as a host material. Examples of the indolocarbazole compounds include a compound represented by the following formula (2) or (3), wherein X is N or CH, at least one of Xs is N, and Ar₁ to Ar₃ each is a substituted or unsubstituted aromatic group.

The invention relates to a four-wheel independently driven electric vehicle torque distribution control method and a four-wheel independently driven electric vehicle torque distribution control system. The method comprises the following steps of (1) acquiring a driver operation action signal and vehicle driving parameters in real time, and after pre-processing the acquired data, storing the data; (2) according to the data acquired in the step (1), identifying the current driving intention of a driver; (3) according to the driving intention identifying result, adopting a corresponding control policy to control, and according to the control policy, sending a torque control order to each driving motor. The system comprises a data acquiring module, a driving intention identifying module and a torque distribution control module which are sequentially connected. Compared with the prior art, torque can be reasonably distributed to four wheels according to the driving intentions of the driver, such as ordinary acceleration, fast acceleration and turning driving, the energy utilization of the finished vehicle is improved, meanwhile, the driving stability of the vehicle under a limited condition can also be improved, and the advantage of independent driving is fully played.

The invention relates to a motor coach unitary body of a large rectangular pipe under frame, which comprises the under frame, an upper part body frame connected with the under frame and a coping, and a floor bracket arranged on the under frame; wherein, the under frame consists of a front overhang, a front axle, a front wheel casing, a middle section, a rear axle, a rear wheel casing and a rear overhang which are sequentially connected with each other; the upper part body frame comprises a front and a rear circles as well as a left side and a right side circles; the under frame is connected with the front and the rear circles as well as the left side and the right side circles of bodywork and the coping by connecting points to form a whole carrying framework, so that a plurality of closed stress ring structures are formed. The invention has the characteristics of strong collision-resistant and side rollover resistant capability, low cost, light weight, high adaptability, good safety, etc.

In a vehicle dynamics control apparatus capable of balancing a vehicle dynamics stability control system and a lane deviation prevention control system, a cooperative control section is provided to make a cooperative control between lane deviation prevention control (LDP) and vehicle dynamics stability control (VDC). When a direction of yawing motion created by LDP control is opposite to a direction of yawing motion created by VDC control, the cooperative control section puts a higher priority on VDC control rather than LDP control. Conversely when the direction of yawing motion created by LDP control is identical to the direction of yawing motion created by VDC control, a higher one of the LDP desired yaw moment and the VDC desired yaw moment is selected as a final desired yaw moment, to prevent over-control, while keeping the effects obtained by both of VDC control and LDP control.

In an OLED device, the improvement including a reflective and conductive bilayer anode including a metal or metal alloy or both; a hole-injecting structure over the reflective and conductive bilayer anode; at least one organic layer formed over the hole-injecting structure; and the reflective and conductive bilayer anode being configured to improve the stability of drive voltage.

Device and method for determining a wheel braking pressure and/or an admission pressure in a braking system in which pressure medium is introduced from a reservoir for the pressure medium having an admission pressure into a wheel brake through at least one shutoff device for inlet and/or outlet and/or passage of a pressure medium, it being possible to remove pressure medium from the wheel brake through at least one means delivering the pressure medium. In so doing, a pressure quantity representing the admission pressure is estimated, at least one operating state of at least one actuator in the braking system is detected and the wheel braking pressure is estimated as a function of the estimated admission pressure and the detected operating states.

The invention relates to a orchard-used self-propelled independent steering and four-wheel driving power-driven orchard work vehicle comprising a frame structure, an single-wheel independent driving and independent steering mechanism, an overall steering and overall walking mechanism, a corner signal and revolving speed signal sensor and a central control unit and s storage battery. The frame structure is used for supporting other mechanical mechanisms and providing a chassis platform. The single-wheel independent driving and independent steering mechanism is provided with a direct current motor, a reducer and a direct current motor driver which are used for outputting corresponding revolving speed and torque needed in walking and controlling sense of rotation of car wheels, and is provided with a stepping motor, a stepping motor driver and a reducer which are used for steering independently. The overall steering and overall walking mechanism comprises four single wheel independent driving and independent steering structures same in structure. The corner signal and revolving speed signal sensor transmits signals to data acquisition cards to process and transmits back to computers to finish information feedback. The central control unit is used for controlling driving modes of each wheel. The storage battery is used for supplying power to all electric power mechanisms, driving mechanisms and control systems. The orchard-used self-propelled independent steering and four-wheel driving power-driven orchard work vehicle can realize overall movement by various driving modes and strong in topography adaptability.

The invention discloses an intelligent anti-rollover control system for an oil tank truck and a use method. The intelligent anti-rollover control system comprises a truck frame, a tank body, multi-dimensional pneumatic pressing plate adjusting devices, a combined pressing plate, annular gravity center adjusting devices, six-dimensional posture adjusting bionic wheel legs, a central control unit, a tank body gravity center controller and tank truck sensors. The use method is mainly characterized as follows: the central processing unit performs coordination control on the tank body gravity center controller and a wheel leg posture adjusting controller; the tank body gravity center controller performs coordination control on a pressing plate adjusting controller, a pressing plate controller and an annular gravity center adjusting controller; the wheel leg posture adjusting controller performs six-dimensional posture adjusting on the six-dimensional posture adjusting bionic wheel legs. The intelligent anti-rollover control system can realize real-time online monitoring and control of the gravity center of a chassis of the oil tank truck and the gravity center of the tank body of the oil tank truck, prevent rollover when the oil tank truck is disturbed by the bad road surface and the outside in a high-speed running state and remarkably improve the running stability, safety and the anti-rollover capacity of the oil tank truck.

The invention provides a method and device for anti-slip control over a four-wheel drive hybrid power system. The method for anti-slip control comprises the steps of respectively calculating a front axle slip error coefficient and a rear axle slip error coefficient; according to a current torque request of a driver, the front axle slip error coefficient and the rear axle slip error coefficient, obtaining a front axle torque distribution coefficient and a rear axle torque distribution coefficient; according to the front axle torque distribution coefficient and the rear axle torque distribution coefficient, adjusting front axle torque and rear axle torque which are preliminarily distributed by a vehicle control unit, and obtaining pre-distributed front axle torque and rear axle torque; respectively performing torque limitation on the pre-distributed front axle torque and rear axle torque, and obtaining anti-slip front axle torque and rear axle torque. The method and the device have the advantages that when a vehicle slips, the anti-slip front axle torque and the rear axle torque can be distributed intelligently, an optimal vehicle road adhesive force and an optimal off-the-hook capability are achieved, and driving stability and passing capability of the vehicle are effectively improved.

The invention provides a telescopic device which comprises a first telescoping mechanism, a second telescoping mechanism, a horizontal telescoping mechanism, a mounting seat, a first mounting board and a second mounting board, wherein a first end of the first telescoping mechanism and a first end of the second telescoping mechanism are hinged with the mounting seat respectively; a second end of the first telescoping mechanism and a second end of the second telescoping mechanism are hinged with the first mounting board and the second mounting board respectively; and a first end and a second end of the horizontal telescoping mechanism are hinged with the first mounting board and the second mounting board respectively. The invention further provides a vehicle provided with the telescopic device. With the adoption of the telescopic device and the vehicle, the wheelbase and the tread of the vehicle can be adjusted respectively or simultaneously.

The invention relates to a method for improving the driving stability of a motor vehicle in which driver-independent braking interventions are triggered if a critical driving situation is to be expected on the basis of route information and instantaneous position data of the motor vehicle, and to a corresponding system. According to the invention, the driver predefines, via a human/machine interface, information about the maximum coefficient of friction to be utilized, which is used as the basis for the prediction of a critical driving situation.

A subframe structure for an automotive vehicle wherein a subframe is attached through a rubber mount to a vehicle body, suspension components are assembled onto the subframe so that the suspension components are held connected to the vehicle body through the subframe, and a detecting assembly capable of providing an output signal according to a load that acts between a subframe and a vehicle body is provided. A rubber mount for use in this subframe structure is also disclosed.

The invention discloses a fabricated prestressed heat-resistant cement concrete pavement and a construction process thereof. The pavement is formed by splicing a plurality of fabricated prestressed heat-resistant pavement plates which are parallelly paved and connected into a whole through transverse prestressed steel stranded wires, wherein each fabricated prestressed heat-resistant pavement plate comprises a fabricated prestressed pavement plate which consists of a plurality of pavement plate blocks connected through connecting plates, and a vermiculite concrete heat-resistant paving layer which is paved on the fabricated prestressed pavement plate; each pavement plate block comprises a plurality of common plates which are connected into a whole through longitudinal prestressed steel stranded wires; and the connecting plates and the common plates are cement concrete prefabricated plate blocks. The construction process comprises the following steps of: 1, prefabricating the cement concrete prefabricated plate blocks; 2, transporting the cement concrete prefabricated plate blocks; and 3, paving the pavement. The pavement is reasonable in structural design, convenient to construct, low in input cost and short in construction period, and has heat resistance, construction quality is easy to ensure, and various practical problems of the traditional fabricated cement concrete pavement can be solved.

The invention discloses a distributed driving electric automobile torque vector control method based on double-layer control. The control method comprises the following steps: establishing a vehicle dynamic model, and calculating a tire slip rate by utilizing a Dugoff tire model; establishing a torque distribution controller based on the vehicle dynamic model and the Dugoff tire model, wherein thetorque distribution controller comprises an upper controller and a lower controller; calculating the current drive torque of each driving wheel of the vehicle by the upper controller according to body yawing angular velocity; calculating a compensating torque needed for remaining an ideal slip rate of each driving wheel by the lower controller according to the ideal slip rate of each driving wheel serving as a control objective, and further performing compensation distribution on the driving torque, so that an actual torque is output to the driving wheel, and torque vector control is completed. According to the control method disclosed by the invention, the automobile torque can be effectively subjected to vector distribution, the vehicle driving stability and smoothness are improved, theoperating burden of the driver is obviously decreased, and the driving safety is improved.

A suspension system for an agricultural or construction industry vehicle is described. The suspension system comprises two hydraulic cylinders, which support a frame in relation to an axle of the vehicle, the hydraulic cylinders each having a piston-side chamber and a piston rod-side chamber and each of the chambers of the hydraulic cylinders being connectable to one another via connecting lines provided with a switch valve, a first supply line, which can be connected via a switch valve to the piston-side connecting line of the first hydraulic cylinder, a second supply line, which can be connected via a switch valve to the piston-side connecting line of the second hydraulic cylinder, a hydraulic accumulator, in each case connectable to the supply lines via proportionally adjustable orifices, a hydraulic source, a hydraulic tank, a control valve device, and an electronic control unit. In order to prevent the activation of a suspension state in critical vehicle states, means for the detection and compensation of load states of the vehicle are provided in the suspension system.

A planetary gear train of claim of an automatic transmission for a vehicle may include an input shaft, an output shaft, a first planetary gear set, a second planetary gear set, a third planetary gear set, a fourth planetary gear set, six control elements for selectively interconnecting rotation elements of the planetary gear sets and a transmission housing, a first connecting member directly connected to the transmission housing, a second connecting member selectively connected to the transmission housing, a third connecting member, a fourth connecting member selectively connected to the input shaft, a fifth connecting member directly connected to the input shaft, and selectively connected to the third connecting member, a sixth connecting member selectively connected to the transmission housing, a seventh connecting selectively connected the fifth connecting member, and selectively connected to the transmission housing, and an eighth connecting member directly connected to the output shaft.

The invention relates to a rule and learning model-based highway leaving method for driverless cars. The method comprises the steps of: in a process that a driverless car runs on a highway, generatingan off-ramp motivation at a distance before a ramp according to a navigation system, trying to get off the ramp by utilizing a rule model, judging whether off-ramp decided by a rule-based decision making model reduces the success rate or not, if the judging result is negative, adopting an action decided by the rule model, and otherwise, entering the next step; and establishing a rule and reinforcement learning mixed hybrid decision making model and a training method thereof on the basis of a framework of reinforcement learning, wherein the hybrid decision model is capable of adopting a rule model for running when being far away from the ramp, and utilizing the reinforcement learning decision making model to adjust the vehicle action according to off-ramp urgency in the process of drivingto the ramp. The method is capable of enhancing the running efficiency and stability of driverless cars in the off-ramp process, and realizing efficient and high-stability off-ramp decision making ofdriverless cars under the condition that the perception range is limited and the environment vehicles are difficult to predict.