48results about How to "Guaranteed driving experience" patented technology

The invention provides a temperature control method and device of an electric car drive motor and an electric car. The method comprises following steps: monitoring the temperature of a drive motor ofan electric car after power on; when the temperature of the drive motor is greater than a first preset temperature threshold value and less than or equal to a second preset temperature threshold value, determining the limit torque of the drive motor according to the current performance parameters of a cooling system of the electric car and the current temperature of the drive motor; the first preset temperature threshold value is the maximum temperature at which the drive motor can operate normally over the rated power range; the second preset temperature threshold value is the critical temperature value at which the drive system of the electric car is at risk of failure; the cooling system performance parameters represent the cooling effectiveness of an electric car cooling system under maximum cooling capability conditions. The invention can effectively prevent the temperature of the drive motor from further rising, and at the same time can minimize the restriction on the torque output of the drive motor, thus ensuring the driving feeling of the driver.

The invention discloses an automatic parking system, which belongs to the field of automobile control. According to the automatic parking system, a plurality of infrared wide angle cameras are arranged on an automobile, and image information around the automobile can be clearly collected, so that when automatic parking is carried out, a comprehensive parking path plan can be made according to distance data between the automobile and surrounding obstacles and the image information around the automobile, which are respectively collected by ultrasonic radar and the infrared wide angle cameras, the defect that unrecognized obstacles are contained in the obtained parking path since radar has blind points for measuring the distance when only the radar is used for measuring the distance between the automobile and the surrounding obstacles is avoided, the occurrence of the phenomenon that the automobile and the obstacles in the parking path are collided and scratched when the automobile is automatically parked through the generated parking path is reduced as much as possible, and the automobile driving feeling of automobile drivers is ensured.

The invention discloses an electric vehicle, as well as a method and device for estimating the sea level elevation of environment around the electric vehicle. The electric vehicle comprises a braking booster system, wherein the braking booster system comprises a vacuum pump for extracting air in the braking booster system to provide vacuum degree in the braking booster system. The method comprises the following steps of judging whether the vacuum pump is under working state or not, judging whether a braking pedal signal of the electric vehicle is received or not, and judging whether the vacuum pump breaks down or not; and if the vacuum pump is under the working state, the braking pedal signal of the electric vehicle is not received and the vacuum pump does not break down, according to the relationship between the vacuum degree in the braking booster system and time, estimating environmental pressure of the environment in which the electric vehicle is positioned, and according to the environmental pressure, calculating the sea level elevation of the environment in which the electric vehicle is positioned. According to the method disclosed by the invention, the calculation of the sea level elevation is realized when a manometer does not exist or breaks down, and the driving feeling of a driver and the riding feeling of a passenger are guaranteed.

The invention provides an adaptive cruising control method and device, and an electric vehicle. The method comprises the following steps: obtaining the vehicle driving state information of an electricvehicle and a target tracking vehicle; according to the vehicle driving state information, determining the target output torque of the electric vehicle; according to the target output torque, carrying out cruising control on the electric vehicle. By use of the method, the vehicle driving state information of an electric vehicle and the target tracking vehicle is obtained, and the electric vehicleis subjected to cruising control according to the target output torque, which is determined by the vehicle driving state information, of the electric vehicle. Therefore, in a vehicle following process, a driver regulates the power output of the vehicle to guarantee the driving and riding feeling of people on the vehicle on a premise that the vehicle is guaranteed to be safely driven, and the purposes of the dynamic traceability and the driving and riding comfort of the electric vehicle are realized.

The invention discloses a vehicle lane change triggering method, a vehicle lane change triggering system, and a computer readable storage medium. The vehicle lane change triggering method comprises the following steps that when a vehicle lane change triggering system is in an initial state, responses to a system, and receivesan automatic lane change triggering signal, whether the system meets an activation condition or not is determined; if the activation condition is not met, the system remains in the initial state; if the activation condition is met, whether a lane change condition is met ornot is determined; if the lane change condition is met, a vehicle is controlled to change to an adjacent lane which meets the lane change condition;if the lane change condition is not met, whether the vehicle can meet the lane change condition throughspeed adjustment or not is determined; if the vehicle can meet the lane change condition after the speed adjustment, the vehicle is automatically controlled for the speed adjustment, and when the lane change condition is met, the vehicle is controlled to change to the adjacent lane which meets the lane change condition; if the vehicle cannot change lane after the speed adjustment, the system jumps back to the initial state. According to the vehicle lane change triggering method, the vehicle lane change triggering system, and the computer readable storage medium, safety can be ensured, and the success rate of lane change triggering is increased.

The invention provides a method and a device for controlling DC bus voltage fault of a vehicle. The method controlling DC bus voltage fault of the vehicle comprises the steps that detecting whether the DC bus voltage obtained from the integrated controller is a normal condition; if the DC bus voltage obtained from the integrated controller is not a normal condition, determining the fault level according to the working parameters of a plurality of components connected with the DC bus; according to the fault level, executing a preset processing mechanism corresponding to the fault level. When a fault of the DC bus voltage occurs, the fault serious degree of the vehicle is judged according to the working parameters of the plurality of components connected with the DC bus, the processing mechanism corresponding to the fault level is implemented at each fault level, thus the car can ensure the driving experience of the driver under the premise of safe driving.

The invention discloses a control method and device for output torque of a motor and a whole vehicle controller, and relates to the technical field of electric automobiles. The control method and device and the while vehicle controller aim to achieve the purpose that when a driver steps on a brake pedal of an electric automobile at first and steps on an accelerator pedal of the electric automobilewhile keeping stepping on the brake pedal, the motor is requested to output a torque value meeting the true demand of the driver. The method comprises the following steps that when the whole vehiclecontroller collects a brake pedal treading signal and collects an accelerator pedal treading signal while keeping the collected brake pedal treading signal, the whole vehicle controller acquires the current vehicle speed of the electric automobile and the treading depth of the accelerator pedal; the whole vehicle controller determines the first demand torque corresponding to the electric automobile according to the current vehicle speed and the treading depth; and when the first demand torque is the negative torque, the whole vehicle controller requests the motor to output the first demand torque. The method, the device and the whole vehicle controller are suitable for the process that the whole vehicle controller requests the motor to output the torque value meeting the requirement of thedriver.

The invention provides a fuzzy rule-based man-machine co-driving control right flexible transfer method and system, and the method comprises the steps: building a steering controller based on a kinematic model of a vehicle to control the steering, and obtaining a target steering angle of a steering wheel; constructing a random function to simulate steering wheel rotation angle input of the driver in a fatigue and distraction state, enabling the vehicle to have lane deviation in a preset time period, and simulating vehicle driving conditions of the driver in the distraction and fatigue state; judging the driving state of a driver according to steering wheel rotation angle input and information of the distance between the vehicle mass center and the lane center line, and obtaining a corresponding man-machine co-driving weight coefficient based on a fuzzy logic rule; establishing a man-machine co-driving right sharing model, and obtaining steering wheel rotation angle input for finally controlling vehicle steering motion; controlling steering motion of the vehicle according to the calculated steering wheel angle input, and correcting the current lane departure condition of the vehicle.

The invention discloses a method, device and equipment for controlling engine torque and a storage medium. The method includes the steps that vehicle state information is obtained in real time and includes brake information, accelerator pedal opening degree, engine torque limit and actual engine torque; whether a vehicle is braked or not, whether the accelerator pedal opening degree is not lower than the preset opening degree value or not and whether the actual engine torque is greater than the engine torque limit or not are judged; when the vehicle is not braked, the accelerator pedal openingdegree is not lower than the preset opening degree value and the actual engine torque is greater than the engine torque limit, an engine is controlled to increase the preset torque; and until the actual engine torque is not greater than the engine torque limit and lasts for first preset time, the engine is controlled to exit the preset torque. When the actual engine torque is too high, quick response of engine torque is maintained to keep the actual engine torque closely following the engine torque limit, and thus the safety of hardware is ensured.

The invention discloses a pure electric vehicle mode recognition and control method and device. The method comprises the steps of obtaining the current driving mode of a vehicle; obtaining facial information of a current user, matching user information in a vehicle-mounted database according to the facial information, and confirming driving information of the current user; obtaining the optimal grade of the energy recovery grade used by the current user in the current driving mode, and adjusting the energy recovery grade of the braking energy recovery system to the optimal grade; and broadcasting the driving mode and the energy recovery level used by the vehicle to the current user, and displaying the driving mode and the energy recovery level on the interactive screen. According to the method, the user information and the driving information are automatically matched through face recognition, and after different driving modes and energy recovery intensity levels of the vehicle are recognized through the VCU, the corresponding power type is automatically matched to the current user, so that friendly driving experience is brought to drivers and passengers.

The invention discloses a shock absorption chassis for a new energy four-wheel drive automobile, and relates to the technical field of new energy vehicles. The shock absorption chassis for the new energy four-wheel drive automobile comprises a support shaft plate, wherein a transmission rotating shaft is inserted into an inner cavity of the support shaft plate, and automobile wheels are separatelyinstalled on the two ends of the transmission rotating shaft; limiting baffles are separately installed on the two ends of the support shaft plate, and the limiting baffles are connected on the outerwall of the transmission rotating shaft in a clamped mode; and a automobile chassis is arranged above the support shaft plate in parallel. According to the shock absorption chassis for the new energyfour-wheel drive automobile, a principle that same magnetic poles of neodymium magnets repel each other and the mutual cooperation with elastic action of a buffer elastic piece are utilized to realize shock absorption of the automobile chassis, reduce the fatigue of the buffer elastic piece and prolong the service life of the buffer elastic piece, and even if the buffer elastic piece is weakenedor broken due to metal fatigue, the shock absorption of the automobile chassis can still be realized under the limit of a first hydraulic telescopic rod because of the always existing of the magnetismof the neodymium magnet, so that the driving feeling of a driver to a automobile and the driving safety are ensured.

The invention provides a user intention positioning method and device based on aggregated resources, and relates to the technical field of vehicle communication, and the method comprises the steps: obtaining an operation instruction for a current user of the aggregated resources, and enabling the aggregated resources to comprise a plurality of content resources; determining a plurality of alternative user intentions corresponding to the operation instruction and weight values of the plurality of alternative user intentions according to historical data, the historical data comprising intentionstatistical data of the historical operation instruction of the current user for the plurality of content resources and / or intention statistical data of the operation instruction of the historical user for the plurality of content resources; selecting the user intention with the highest weight value from the alternative user intentions as a target user intention; sending the target user intentionto a vehicle-mounted control terminal, so that the vehicle-mounted control terminal executes corresponding operation on content resources corresponding to the target user intention; the user intentionis accurately recognized according to the historical data of the aggregated resources, and the user driving experience is improved.

The invention discloses a rear-drive series hybrid power driving system, belonging to the technical field of hybrid power automobile driving system structures. The rear-drive series hybrid power driving system is mainly used for solving the problem of excessive oil consumption when a traditional hybrid power automobile runs at a high speed. According to the main structure of the system, a speed increaser comprises a speed increaser input gear, a speed increaser intermediate gear and a speed increaser output gear; the speed increaser input gear, the speed increaser intermediate gear and the speed increaser output gear are in meshed transmission connection; the axis of the speed increaser intermediate gear is further in intermittent transmission connection with the input end of a transmission shaft through a direct-drive shaft system; a motor controller is connected with a vehicle control unit; and the vehicle control unit is further connected with a battery and the direct-drive shaft system. According to the rear-drive series hybrid power driving system, by arranging the direct-drive shaft system, an engine can be directly connected with the transmission shaft when necessary so as to participate in driving of an automobile and lower oil consumption.

The invention discloses a driver abnormal state detection method based on image and voice recognition. The method comprises the steps that 1, the state of a driver is monitored in real time through an image module and analyzed; 2, voice interaction with a driver is carried out through an interaction module, the voice state of the driver is collected, a voice system can randomly extract a group of short dialogues from a voice library to interact with the driver, 3, voice information of the driver is analyzed through a voice analysis module, the state of the driver is judged, and 4, warning is carried out through a warning module. According to the method, the driving state of the driver can be monitored in real time, and traffic safety accidents caused by abnormity of the driver can be effectively reduced.

The invention relates to a planet row hybrid power system and a vehicle. The system comprises an engine, a front power mechanism and a rear power mechanism, wherein the front power mechanism comprisesa front planet row, a first lock-up clutch and a first motor, the rear power mechanism comprises a system output shaft, the first lock-up clutch is arranged between any two elements of a front sun gear, a front planet carrier and a front gear ring of the front planet row. When the first lock-up clutch is combined, the two corresponding elements are locked together, the two elements rotate at thesame speed in the same direction, the rotating speed and the direction of the third element except the two elements are the same as those of the two elements, and the whole front planet row becomes adirect gear mechanism; when large torque output is needed, only the output torque of the engine needs to be increased to the same degree, and the output torque of the engine does not need to be increased to a larger degree, so that the possibility that the engine does not run in a high-efficiency area any more due to the fact that the output torque is too large is reduced, and then the running efficiency of the engine is improved.

The invention discloses an automatic parking system, which belongs to the field of vehicle control. The present invention can clearly collect image information around the vehicle through a plurality of infrared wide-angle cameras installed on the vehicle, so that when performing automatic parking, the distance data and the distance data between the vehicle and the surrounding obstacles collected respectively by the ultrasonic radar and the infrared wide-angle camera The image information around the vehicle can be used to plan a comprehensive parking path, avoiding the fact that the radar has a blind spot when measuring the distance between the vehicle and the surrounding obstacles, so that the obtained parking path contains unrecognized objects. Defects of obstacles, minimize the collision and scratching between the vehicle and the obstacles in the parking path during the automatic parking process of the vehicle through the generated parking path, and ensure the driver's vehicle driving feel.

The invention provides a power-on control method and device for a low-voltage storage battery of an electric automobile and the electric automobile, and relates to the field of power-on processing ofthe low-voltage storage battery of the electric automobile. The power-on control method for the low-voltage storage battery of the electric automobile comprises the steps: obtaining a performance reduction judgment result of a previous power-on period of a current power-on period of the low-voltage storage battery and the awakening frequency Ni of a controller in the power-on process of the low-voltage storage battery; determining a low-voltage power-on mode of the current power-on period of the low-voltage storage battery according to the performance reduction judgment result and the wake-upfrequency Ni; and obtaining a performance reduction judgment result of the low-voltage storage battery in the current power-on period when the low-voltage storage battery is powered on according to the low-voltage power-on mode and the awakening frequency of the controller. According to the embodiment of the invention, the stability and stationarity of the output voltage in the power-on process ofthe low-voltage storage battery are ensured by detecting the performance degradation of the storage battery and awakening the controller by stages, and the driving feeling is ensured.

The invention provides an intelligent control method and device for low-speed alarm sound of an automobile, and belongs to the technical field of automobiles. The invention solves the problem that an existing low-speed alarm sound cannot meet the driving experience of a user. The intelligent control method for the low-speed alarm sound of the automobile comprises the following steps: when the method judges that the current position of the automobile is an interest point area and judges that the current interest point area is a crowded place, judging whether a first low-speed alarm condition is met or not according to the current driving speed of the automobile; if the method judges that the current position is a non-interest point area or the interest point area is a non-crowded place, judging whether a second low-speed alarm condition is met or not according to the current driving speed of the vehicle and information of pedestrians and non-motor vehicles around the vehicle; when a second low-speed alarm condition is met, turning on a low-speed alarm sound system and sending out sound for reminding; and if not, turning off the low-speed alarm sound system. According to the invention, the low-speed alarm sound can be automatically turned on and off, and the driving somatosensory and safety of a user are improved.

The invention provides a driving control method and device, and is applied to motor controllers. The driving control method comprises the following steps of detecting whether a communication failure occurs between the motor controller and a battery management system or not; if yes, calculating residual available capacity and a SOC (state of charge) value of a power battery, and determining a maximum allowable charging threshold and a maximum allowable discharging threshold of the power battery; and according to the residual available capacity and the SOC value of the power battery obtained by calculation, and the determined maximum allowable charging threshold and the determined maximum allowable discharging threshold of the power battery, performing control logic calculation, so as to realize the driving control of a motor. According to a technical scheme of the driving control method provided by the embodiment of the invention, when the communication failure occurs between the motor controller and the battery management system, the motor controller can still perform logical control, so that the driving control of the motor is realized, the limit to driving is reduced, and driving feelings and travelling feelings of staff in a vehicle are guaranteed.

The invention provides a method and a device for controlling DC bus voltage fault of a vehicle. The method controlling DC bus voltage fault of the vehicle comprises the steps that detecting whether the DC bus voltage obtained from the integrated controller is a normal condition; if the DC bus voltage obtained from the integrated controller is not a normal condition, determining the fault level according to the working parameters of a plurality of components connected with the DC bus; according to the fault level, executing a preset processing mechanism corresponding to the fault level. When a fault of the DC bus voltage occurs, the fault serious degree of the vehicle is judged according to the working parameters of the plurality of components connected with the DC bus, the processing mechanism corresponding to the fault level is implemented at each fault level, thus the car can ensure the driving experience of the driver under the premise of safe driving.

The invention provides a low-voltage battery power-on control method and device of an electric vehicle and the electric vehicle, and relates to the field of power-on processing of the low-voltage battery of the electric vehicle. The low-voltage battery power-on control method of the electric vehicle includes: obtaining the performance degradation judgment result of the previous power-on cycle of the current power-on cycle of the low-voltage battery and the wake-up times N of the controller in the power-on process of the low-voltage battery i ; According to the performance degradation judgment result and the wake-up times N i , determining the low-voltage power-on mode of the current power-on cycle of the low-voltage battery; acquiring the performance degradation judgment result of the low-voltage battery when the low-voltage battery is powered on according to the low-voltage power-on mode in the current power-on cycle and the wake-up times of the controller . In the embodiment of the present invention, the stability and smoothness of the output voltage during the power-on process of the low-voltage battery are ensured through the detection of the performance degradation of the battery and the wake-up of the controller in stages, thereby ensuring a better driving experience.

The invention discloses a self-adaptive slipping control method of a pure electrically driven automobile. A system of the automobile comprises a whole automobile controller, a motor, a motor controller, a power battery and a power battery controller. The whole automobile controller is responsible for upper-layer coordination control and is used for sending an instruction to the motor controller and receiving signals uploaded by the motor controller and the power battery controller. The self-adaptive slipping control method can keep the original driving feeling of the automobile without change of driving habits of a driver, can achieve automatic control according to automobile state parameters and the operation of the driver, can make the automobile slide at stable speed under the slope condition and can reduce the fatigue degree of the driver. By the adoption of the self-adaptive slipping control method, the brake pedal treading times executed by the driver can be decreased, and the probability of heat fade occurrence of a brake is effectively reduced. Maximized recovery of automobile brake energy under the slope condition can be achieved, and the economical efficiency of the whole automobile is improved. The self-adaptive slipping control method sets exit conditions when an electrically charged state SOC of the power battery is too high for power battery protection.

The invention discloses a remote diagnosis platform, a data acquisition method, equipment and a storage medium. The remote diagnosis platform includes: a task initiation client, a remote diagnosis server and a remote diagnosis client, the task initiation client is connected to the remote diagnosis server, and the remote diagnosis server is connected to the remote diagnosis client; wherein, the The task initiating client is configured to send a data request to the remote diagnosis server; the remote diagnosis server is configured to receive the data request sent by the task initiating client, call the target script according to the data request, and The target script generates a target task, sends the target task to the remote diagnosis client corresponding to the target vehicle, receives the target data collected by the remote diagnosis client and stores it in the database; the remote diagnosis client is used to Establish communication with the remote diagnosis server for information exchange.

The invention provides a forklift and a speed control method of the forklift. The speed control method of the forklift includes: during the process of changing the running speed of the forklift from the current running speed to a target running speed, controlling the reference speed according to the difference between the actual speed of the forklift and a reference speed. The present invention can reduce or avoid the tracking error between the actual speed of the forklift and the reference speed, and improve the poor driving experience of the forklift during acceleration or deceleration.

The invention provides an electric vehicle remaining mileage estimation algorithm and an electric vehicle using the algorithm, under the condition that hardware of the electric vehicle is not changed, the remaining mileage is estimated through weighted average real energy consumption per kilometer in the historical mileage of the vehicle and battery remaining energy, and the prediction value is adjusted in time according to the operation state so as to estimate the remaining mileage more accurately; meanwhile, when the battery is low in electric quantity, the power of the electric drive system is limited and optimized, the residual energy of the battery can be fully released, the situation that power output of the vehicle is cut off when the residual electric quantity is not used up and the instrument does not display the residual mileage of 0 kilometer is avoided, and the driving experience of a user is guaranteed.