73 results about "Vehicle acceleration" patented technology

This invention discloses a method and apparatus for calculating vehicle acceleration. The method establishes gravitational acceleration component equations based on a first set of acceleration models and a second set of acceleration models. It determines the total acceleration vector of a second sensor based on the vector coordinates of the second coordinate system relative to the first coordinate system. Based on the vector coordinates of the second coordinate system relative to the first coordinate system, it calculates the total rotational angular velocity vector and the total rotational angular acceleration vector of the second sensor in the first coordinate system. Based on the total acceleration vector, the total rotational angular velocity vector, and the total rotational angular acceleration vector, it calculates the summed acceleration vector of the second sensor at the origin of the first coordinate system. Based on the resultant acceleration vector and the summed acceleration vector in the first coordinate system, it establishes acceleration equations. Finally, it establishes and solves a joint system of equations based on the gravitational acceleration component equations and the acceleration equations to obtain the motion acceleration of each axis in the first coordinate system. This method improves the accuracy of vehicle acceleration calculation.

The application discloses a new energy commercial vehicle adaptive torque distribution output method and system, and belongs to the field of new energy vehicles. The method comprises the following steps: acquiring vehicle acceleration and vehicle speed data; based on the vehicle acceleration and vehicle speed data, vehicle weight is calculated by using an extended Kalman filtering algorithm and a least square method to obtain a vehicle weight estimation value; based on the vehicle weight estimation value, a target torque value is obtained by table lookup of a preset vehicle weight-torque mapping table, and the target torque value is sent to a motor control unit; the motor control unit controls the power output of the vehicle according to the received torque value; a vehicle reference vehicle weight inputted from outside is acquired; and based on the vehicle reference vehicle weight, the vehicle weight calculation process is adaptively corrected. The application realizes adaptive torque distribution output suitable for different load conditions.

This application provides a control method, device, and vehicle. The method includes: acquiring vehicle driving parameter information, including motor speed and vehicle acceleration; determining, based on the driving parameter information, that the road surface where the vehicle is located is a separated road surface; and sending first instruction information to a first controller, the first instruction information being used to instruct the first controller to control the differential lock to lock, the first controller being located within the vehicle. Based on the above method, it is possible to efficiently identify that the vehicle is on a separated road surface and promptly control the differential lock to lock, thereby improving the vehicle's passability and driving stability under complex road conditions.

This application discloses a vehicle acceleration determination method, apparatus, electronic device, and storage medium. The method includes: acquiring an initial acceleration from a vehicle accelerometer; determining the zero-bias error parameter of the vehicle accelerometer; and updating the initial acceleration using the zero-bias error parameter of the vehicle accelerometer when it is determined that the vehicle is currently in a non-moving state. This application achieves adaptive adjustment of the zero-bias error parameter of the vehicle accelerometer, while eliminating high-frequency noise errors and improving data accuracy. This application can be used in autonomous vehicles.

This application relates to the field of vehicle technology, and in particular to a method, apparatus, and vehicle for controlling the engine power follow-up in a hybrid electric vehicle. The method includes: in response to the vehicle entering launch control mode, acquiring the current state of charge (SOC) value of the power battery; determining a target follow-up strategy for the engine based on the SOC value, controlling the engine to operate according to the target follow-up strategy, and detecting the release time of the brake pedal; when the release time falls within a preset time window, controlling the engine to switch to target output power operation. This solves the problems of battery overcharging risk and low matching degree between engine power output and driver's launch intention in related technologies, which affect the overall vehicle acceleration performance.

A procedure for determining the initial vehicle speed of a vehicle is described, comprising the following steps: - Determining a second vehicle speed based on wheel speed sensor readings of the vehicle; - Determining vehicle acceleration as a function of the determined second vehicle speed; - If the measured vehicle acceleration exceeds and / or falls below a predefined acceleration limit, limit the measured vehicle acceleration to the predefined acceleration limit; and - Determining the initial vehicle speed as a function of the vehicle acceleration.

An overshoot of actual acceleration relative to target acceleration is suppressed in controlling acceleration of a vehicle by performing integral control. A vehicle control device includes: an actual acceleration recognition unit that recognizes actual acceleration of a vehicle; an integrated value calculation unit that calculates a time integrated value of a difference between predetermined target acceleration and the actual acceleration; a control instruction value setting unit that sets a control instruction value for a drive apparatus of the vehicle based on the time integrated value; and an integration processing limiting unit that limits calculation of the time integrated value performed by the integrated value calculation unit so that the time integrated value when a predetermined limiting condition is satisfied is smaller than that when the limiting condition is not satisfied.

Disclosed herein is a method and a system for determining the acceleration profile and residual distance profile of a vehicle. The method comprises receiving a plurality of inputs relating to the operating behavior of the vehicle and a preceding vehicle, and the presence of a braking threshold. The method further comprises determining, based on the plurality of inputs, whether one or more preconditions relating to the preceding vehicle, the vehicle, and the braking threshold are satisfied. If the one or more predefined conditions are satisfied, the method comprises determining the vehicle's acceleration profile and residual distance profile relative to the preceding vehicle and adjusting the vehicle's acceleration profile and residual distance profile to these profiles until the preceding vehicle passes over the braking threshold.

The present application relates to the field of fuel cell vehicles, in particular to an energy management method for a vehicle hybrid power system.The present application provides an energy management method for a vehicle hybrid power system, the vehicle hybrid power system comprising a fuel cell and a power battery, the energy management method comprising the following steps: determining the working mode of the vehicle, including a static mode and a dynamic mode; in response to the vehicle being in the static mode, adopting a first energy management strategy, including determining the fuel cell output power based on the power battery SOC and determining the power supply distribution between the power battery and the fuel cell for the vehicle demand power; and in response to the vehicle being in the dynamic mode, adopting a second energy management strategy, including determining the fuel cell output power based on the vehicle acceleration mode and the power battery SOC, and cooperatively supplying the vehicle demand power by the fuel cell and the power battery. Not only the energy distribution efficiency is improved, but also the vehicle endurance mileage is improved, and the driving experience is improved.

The application provides an IMU installation angle estimation method based on speed increment and confidence check, comprising: establishing a gyroscope zero offset estimation model, performing mean value calculation on the gyroscope output in the vehicle static stage, obtaining the gyroscope axis zero offset and compensating the measurement data; establishing a correlation model of the accelerometer and the gravity projection in the static state, deducing the gravity projection in the IMU system, and solving the roll and pitch installation angles by simultaneously solving the constraint equations; when the vehicle acceleration is large, starting the inertial navigation recursion, solving the speed change, using the included angle of the speed change to solve the heading installation angle of the IMU at each epoch; through sequence convergence judgment and installation angle confidence check, taking the mean value of the latter half of the converged sequence as the final heading installation angle, and obtaining the complete estimation of the three-axis installation angle. The application solves the heading installation angle through the speed increment and the attitude constraint, realizes the integrated estimation of the three installation angles, and adapts to the initial calibration scene of the vehicle-mounted inertial navigation.

This application discloses a method and apparatus for adjusting the profile of a vehicle seat, and related equipment, relating to the field of automotive seat technology. The profile of the vehicle seat includes an adjustment area profile, and the vehicle seat includes a profile adjustment component disposed on the backrest and / or seat cushion. The method includes: acquiring vehicle state information, which is used to determine the vehicle's acceleration information; and controlling the profile adjustment component to adjust the adjustment area profile based on the acceleration information. It is evident that the vehicle's acceleration information is determined through the vehicle state information, the vehicle's acceleration and deceleration are determined through the acceleration information, and finally, the profile adjustment component is controlled based on the acceleration information to dynamically adjust the adjustment area profile. In this way, by dynamically adjusting the profile of the vehicle seat through the profile adjustment component, the inertial forces generated by vehicle acceleration and deceleration are buffered, reducing the extent of backward leaning or forward tilting of the occupants, thereby improving the overall comfort and stability of the vehicle ride.

This invention discloses a mixing and flow-dividing device and a heat exchanger assembly. The mixing and flow-dividing device includes an inlet pipe, a primary flow-dividing structure, a secondary flow-dividing structure, and an outlet pipe. Through a differential mixing layout, it effectively neutralizes distribution differences in various spatial directions, allowing flow deviations and gas-liquid ratio deviations in vertical, horizontal, and different orientations to compensate and cancel each other out. The secondary flow-dividing is not a simple redistribution, but a re-collection and equalization based on the primary flow-dividing. The secondary flow-dividing, through interval selection and cross-directional collection, precisely compensates for the distribution deviations caused by different orientations in the primary flow-dividing, significantly reducing the adverse effects of gravity and external acceleration on fluid distribution. This achieves a stable and uniform distribution of the gas-liquid two-phase refrigerant under any orientation and vehicle acceleration conditions.

This invention discloses an adaptive torque compensation control method and system for electric vehicles on bumpy roads, belonging to the field of intelligent control technology for electric vehicles. The method includes: real-time acquisition of left and right wheel speed signals, motor speed signals, and vehicle acceleration signals during the electric vehicle's operation; determining the bumpiness state of the current road segment based on the left and right wheel speed signals and motor speed signals; and adaptively adjusting the torque based on the bumpiness state determination result, including: when the electric vehicle is determined to be traveling on a bumpy road segment, calculating the real-time torque compensation value for the current bumpy road segment using a dynamic torque compensation strategy based on the left and right wheel speed signals and vehicle acceleration signals, and superimposing the real-time torque compensation value onto the original requested torque to output the final drive torque; otherwise, directly using the original requested torque as the drive torque and outputting it. This invention can achieve precise torque compensation on bumpy road segments, improving the user's driving experience and comfort.

The application provides a starting control method and device, a storage medium, a vehicle controller and a vehicle. According to the starting control method, the road adhesion coefficient is obtained before the vehicle starts, the torque output of the vehicle when starting is controlled based on the road adhesion coefficient, and the torque output of the vehicle is controlled based on the traction control system when the slip rate of the vehicle reaches the trigger threshold of the traction control system, so that the situation that the slip rate of the vehicle is relatively high due to the excessively large torque increasing rate of the vehicle in the early stage of starting is avoided, and the acceleration performance of the vehicle is ensured.

The operation of the air conditioning system is controlled according to the vehicle's driving conditions. [Solution] The air conditioning control device 30 has an air conditioning control unit 322 that controls the output of a compressor 21 included in an air conditioner 20 that conditioned the air inside the vehicle S, and the air conditioning control unit 322 makes the output of the compressor 21 when the vehicle S is accelerating less than the output of the compressor 21 when the engine brake is applied to the vehicle S.

Systems and techniques are described herein for controlling an engine of a vehicle. For instance, a method for controlling an engine of a vehicle is provided. The method may include predicting a time associated with acceleration of the vehicle; determining an engine-off duration based on an engine-shutdown duration, an engine-startup duration, and the time wherein the engine-shutdown duration is associated with shutting down the engine, wherein the engine-startup duration is associated with starting the engine, and wherein the engine-off duration comprises a prediction of how long the engine will be shutdown based on the predicted time; and based on the engine-off duration being less than an engine-off threshold, preventing an idle-engine shutdown feature from stopping the engine of the vehicle, wherein the idle-engine shutdown feature is configured to shut down the engine when the vehicle is stopped.

The application discloses a kind of bracket structures for vehicle-mounted road detection instrument, belong to vehicle-mounted road technical field, including bottom plate, buffer assembly is connected above bottom plate, support block is connected above buffer assembly, clamping assembly is connected on support block, and installation component is connected on the both sides of bottom plate;The position of mounting hole on mounting block can be adjusted by installation component, and a variety of vehicle types can be adapted, the vibration generated during driving of vehicle can be buffered by designing buffer assembly, not only improve detection accuracy, also will greatly improve instrument service life, place road detection instrument on the top of support block, clamp and fix road detection instrument by clamping assembly, avoid the occurrence of instrument displacement, collision or even falling off when vehicle accelerates, turns or emergency brake, improve the safety of instrument, avoid the occurrence of potential threat to other equipment in vehicle and driving personnel.

Some work vehicles are equipped with a continuously variable transmission (CVT) and a transmission control device that controls the acceleration and deceleration during gear changes according to the operating speed and amount when the main transmission lever, which allows for stepless gear changes, is operated. While the ability to perform various operations when accelerating and decelerating the vehicle improves convenience, adding buttons for each function increases the number of parts and thus the cost. Therefore, this invention provides a work vehicle that offers multi-functional gear changes with a simple configuration. [Solution] In a work vehicle equipped with a gear shift lever 15 for operating a transmission that changes the speed of the prime mover's power and transmits it to the drive wheels, and an operating switch 62 provided on the gear shift lever 15, the operating load of the gear shift lever 15 changes in steps with respect to the load change angle, and different control is performed when the operating switch 62 is operated at the angle before the load change and when the operating switch 62 is operated at the angle after the load change.

This application discloses a method, apparatus, device, and storage medium for correcting engine oil level values, relating to the field of engine control technology. In this method, the measured engine oil level value of a vehicle at the end of a target time period is obtained, and the vehicle acceleration during the target time period is also obtained. Vehicle acceleration includes acceleration in six directions. A level correction value and an acceleration coupling coefficient are determined using the vehicle acceleration. The level correction value is used to reduce the deviation in the measured oil level value caused by vehicle acceleration. The acceleration coupling coefficient is used to reduce the influence of the coupling relationship between accelerations in multiple directions on the measured engine oil level. By using the level correction value and the acceleration coupling coefficient to correct the measured oil level value, the measured oil level value can be comprehensively corrected from both the perspectives of acceleration in multiple directions and the coupling relationship between accelerations, reducing the influence of acceleration and the coupling relationship between accelerations on the engine oil level measurement, thus obtaining a more accurate engine oil level value.

The present disclosure relates to the technical field of vehicle intelligent driving, and provides a vehicle control method and a vehicle. In response to monitoring that a vehicle brakes, vehicle acceleration data and wheel speed are acquired, a target disturbance intensity is determined according to the vehicle acceleration data and the wheel speed; it is determined that the target disturbance intensity meets a preset adjustment condition, and vehicle kinetic energy recovery data are acquired; a target recovery intensity is determined according to the target disturbance intensity, the kinetic energy recovery data and the vehicle acceleration data, and the vehicle is controlled to perform energy recovery according to the target recovery intensity. In the present disclosure, when the recovery intensity of energy recovery is determined, the target disturbance intensity of the vehicle at present, the actual running information of the vehicle and the kinetic energy recovery data when the vehicle recovers power are comprehensively considered, and the recovery intensity is more accurate. At the same time, the instability caused by kinetic energy recovery is dynamically inhibited, the imbalance of wheel speed and the decline of vehicle stability caused by recovery control rigidity are avoided, and the consistency of wheel speed and the safety of the vehicle are ensured.

This invention discloses a method and apparatus for analyzing accelerator pedal travel value, brake pedal travel value, and vehicle speed data of new energy vehicles. This method does not rely on internal vehicle manufacturer protocols. By placing the vehicle on a rotating test bench or closed road, simulating states such as stationary, cruise control, and pedal fully depressed, the method uses the vehicle speed displayed on the instrument panel and the pedal travel range (0~100%) as reference data to filter fields that meet certain characteristics from a custom binary data block: in the stationary state, the "0 value field" is located; in cruise control, the vehicle speed coefficient k is deduced; and in the pedal fully depressed state, the "field that gradually transitions to 0x64" is located. The data storage location is confirmed through multiple rounds of verification. This invention offers high parsing efficiency (≤2 hours), small error (vehicle speed deviation ≤±0.5km / h), and can meet the electronic data evidence collection needs of traffic accident investigations, improving the judicial validity of evidence. It also has strong compatibility and can be integrated into in-vehicle evidence collection products.

A vehicle comprises: a brake indicator; a sensor unit configured to detect vehicle status information and an acceleration signal from the vehicle; an acceleration correction unit configured to generate a corrected acceleration from the vehicle's acceleration signal; and a control unit configured to control the brake indicator based on a value of the corrected acceleration. The acceleration correction unit establishes effective ranges for the vehicle's acceleration and acceleration fluctuations and generates the corrected acceleration within these effective ranges.

This application relates to the field of vehicle chassis technology, and provides a radiator assembly mounting structure and a vehicle. The radiator assembly mounting structure includes: a main frame including two main longitudinal beams; a front subframe connected to the main frame and having two secondary longitudinal beams; and a radiator assembly including a radiator and a radiator frame, wherein the radiator is mounted on the radiator frame, and the radiator frame is connected to the two main longitudinal beams and the two secondary longitudinal beams. Improving the dynamic stiffness of the radiator mounting point on the radiator frame, that is, improving the ability of the radiator mounting point to resist deformation under specific dynamic disturbances, thereby reducing noise during acceleration in a vehicle with this radiator assembly mounting structure and improving vehicle comfort.

The application discloses a kind of self-adapting electric vehicle traction force control method and system based on maximum wheel end transmissible torque, it is related to electric vehicle dynamics control technical field;The system includes: signal acquisition and pretreatment module, road surface state discrimination module, adaptive scheduling module, NMETE calculation module, torque attenuation limiting module and motor controller;The method judges the road adhesion state by wheel-vehicle acceleration difference, then determines slip and online updates relaxation factor by torque ratio and acceleration difference, and then obtains the maximum effective torque estimation value;Under low adhesion road surface, according to the low adhesion duration Attenuation coefficient is constructed, the output torque is limited, and the final torque upper limit is obtained, so as to improve the traction utilization rate and driving stability under complex road surface and multiple working conditions.Compared with the conventional METE controller, the application can better adapt to complex road surface and multiple working conditions, improve the slip rate change, and improve the traction utilization rate and vehicle driving stability.

This invention provides a vehicle scheduling method and system for a two-way, two-lane unsignalized intersection, comprising: Step S1: Preprocessing vehicles based on given real-world traffic conditions at a two-way, two-lane intersection to determine the likelihood of collisions and analyze conflict relationships between vehicles; Step S2: Constructing a vehicle scheduling model based on deep search of conflict relationships; Step S3: Utilizing nonlinear programming to make vehicle action decisions, determining the optimal passage time and vehicle acceleration; and based on the vehicle scheduling model, performing lower-level planning to design a vehicle scheduling strategy for the unsignalized intersection; Step S4: Building a simulation scenario of the intersection based on a given real-world intersection scenario and initializing vehicle information for each vehicle; Step S5: Inputting the vehicle information into the vehicle scheduling model to make behavioral decisions and obtain the action output of each vehicle at the next moment. This invention can improve vehicle traffic efficiency and reduce the probability of accidents.

The invention relates to the technical field of data transmission, in particular to a data transmission method and system based on edge computing, comprising: acquiring motion data of a vehicle and channel state information of a communication channel, the motion data comprising acceleration, and the channel state information comprising a signal-to-noise ratio; and based on a plurality of signal-to-noise ratios and accelerations within a set sliding window length. According to the method, the channel-motion coupling fluctuation index is constructed by fusing the vehicle acceleration and the channel signal-to-noise ratio, the time delay sensitivity weighted backlog coefficient reflecting the real business urgency degree is calculated according to the channel-motion coupling fluctuation index, and the self-adaptive parameters of the transmission control algorithm are dynamically adjusted. Therefore, the system can sense the potential channel deterioration risk caused by strenuous movement of the vehicle, the attention on energy saving is automatically reduced when the environment becomes worse or data burst occurs, and the real-time performance of data transmission is preferentially guaranteed, so that the transmission backlog and time delay are remarkably reduced in a high-dynamic edge computing scene.