1246results about How to "Improve driving comfort performance" patented technology

The invention discloses a multi-vehicle coordinating lane changing control system and a multi-vehicle coordinating lane changing control method based on vehicle-vehicle communication, and belongs to the field of control over vehicles. The system comprises a sensing unit, a communication unit, a control unit and a human-computer interaction unit. The sensing unit is used for acquiring information of an own vehicle in real time, the communication unit is used for performing real-time interaction of information among vehicles, and the communication unit is used for making a decision of the coordinating lane changing feasibility and acquiring expected control quantities of the own vehicle and coordinating vehicles and realizing control over the vehicles. The method is based on the system, through collecting information of vehicles, i.e. the own vehicle, a front vehicle on an original lane, a front vehicle on a target lane and a behind vehicle on the target lane, motion statuses of the four vehicles having mutual effects are planned in a centralized manner in the lane changing process, and the own vehicle changes the lane smoothly through active coordinating among the four vehicles. By applying the multi-vehicle coordinating lane changing control system and the multi-vehicle coordinating lane changing control method based on the vehicle-vehicle communication, safety spaces among the vehicles can be fully used, the feasible lane changing chance is effectively increased, the lane changing safety is guaranteed, the driving comfort in the lane changing process is improved, and negative influences of lane changing behaviors on the upstream vehicles on the target lane are decreased.

The invention discloses a model-based anti-shake control method for a motor-driven vehicle, which comprises the following steps of: obtaining a motor torque request, performing integral estimation on the rotating speed of a motor, performing negative feedback estimation on a rotating speed error and resistance torque, and performing low-pass filtering. The problem that an electrically-driven vehicle shakes because the motor shakes is solved. The motor torque request is subjected to torque compensation by a model-based rotating speed feedback control method in a closed loop control mode, so that the problem that the vehicle shakes and vibrates under specific working conditions is solved, and the driving comfort of the vehicle is improved; the problem that the vehicle shakes when a vehicle speed exceeds a vehicle speed interval corresponding to the resonant frequency of a power system under the working conditions of starting and accelerating, low-speed rapid accelerating and low-speed rapid decelerating is solved; and a way for solving the problem that the vehicle shakes on the premise of not sacrificing the power performance and braking performance of the vehicle is provided.

A control system of a vehicle according to an exemplary embodiment of the present invention may include an input portion for inputting an order for generating an virtual avatar of a driver, an image detection portion that detects an outside image of the driver according to the order that is input by the input portion, an avatar generating portion that transforms the image of the real driver into the virtual avatar, and an integrated control portion that controls a driver seat, a steering device, a side view mirror, or a rear view mirror according to the shape of the virtual avatar.

The invention relates to an automatically adjusted electric vehicle staged automatic emergency braking control system. The automatically adjusted electric vehicle staged automatic emergency braking control system comprises vehicle-mounted distance measuring and speed measuring sensor equipment, a staged pre-warning control system, a safety distance calculation model, a vehicle reverse longitudinaldynamic calculation model, a hydraulic braking force and regenerative braking force distribution and calculation module, a hydraulic braking system reverse model, an ESC and Booster active pressurizing hydraulic pressure distribution module and a pavement information estimation module; potential safety hazards such as rear-end collision of a rear vehicle caused by great sudden deceleration of a vehicle are reduced while the comfort during triggering an AEB system is improved; by estimating information, such as gradients and adhesion coefficients, of a current running road and a front road ofthe vehicle and controlling online adjusting of parameters, the adapting degree of the AEB system to different pavement statuses is enhanced, the braking energy is sufficiently recycled, the endurancemileage is increased, and the advantages of a vehicle body stability control system ESC and an electronic mechanical braking booster in active pressurizing are sufficiently developed.

The invention discloses a combination control system for integration electric power steering and active steering. The combination control system for integration electric power steering and active steering comprises an active steering control system, an electric power steering control system, an adjustment control system based on yaw velocity and an adjustment control system based on steering wheel moment, the active steering control system and the electric power steering control system are respectively connected with a vehicle speed sensor and a steering wheel angle sensor for calculating and processing the inputted vehicle speed and steering wheel angle and outputting the total front wheel angle control signal to the total system for steering the front wheel actively; the adjustment control system based on yaw velocity is used for adjusting the obtained yaw velocity value for having feedback to the active steering control system for amending the front wheel angle control signal; the adjustment control system based on steering wheel moment is used for adjusting the obtained steering wheel moment for having feedback to the electric power steering control system for amending the outputted front wheel angle control signal.

The invention discloses an automatic speed-change electrical wheel hub, comprising a left wheel hub frame, a right wheel hub frame, a housing, a motor, a transmission shaft, a wheel, a brake device arranged on the transmission shaft, and a self-adaptive two-speed automatic speed-change assembly driven by the motor rotor via a transmission device. The transmission device is arranged in the intracavity of the motor stator. The automatic speed-change electrical wheel hub has the advantages that the motor transmission device is arranged reasonably, the consumption of the manufacture materials of the housing is lowered, the whole wheel hub has a compact size and a light weight, the manufacturing cost is reduced, and the invention can enable the output power of the motor and the driving status of vehicles to always be in an optimum matching status to achieve the balancing control of the driving moment of the vehicles and the synthesized driving resistance; the speed change can be operated automatically along with the change of the driving resistance by the self adaptive without cutting off the driving force, so that the invention is beneficial to the energy-efficiency of the vehicles and the mechanical power equipment, and can satisfy the usage under the conditions of mountain areas, hills and heavy loads; and the transmission of the invention has a light weight and a compact structure.

The invention provides a fleet formation control device and a formation control method based on an information physical network, wherein a fleet comprises navigation vehicles (Ri) and following vehicles (Rj); a fleet intelligent obstacle avoiding device arranged on each vehicle of the fleet comprises a vehicle external sensor module (1), a GPS positioning module (2), a wireless communication module (3) and a central processing unit module (4); the central processing unit module (4) used for realizing communication and application protocols receives speed and position information of the vehicle through the GPS positioning module (2) and processes the speed and position information; and when an infrared sensor (5) senses that an obstacle object exist in the front, the central processing unit module (4) obtains linear speeds and angular speeds of the navigation vehicles (Ri) and the following vehicles (Rj) by means of formula calculation, and the navigation vehicles (Ri) and the following vehicles (Rj) send the obtained linear speeds (vj) and angular speeds (wj) to a vehicle controller (7) through a CAN bus so as to ensure the fleet to advance in a formation manner.

The invention discloses a vehicle economy cruise control method based on an engine universal characteristic. Economy cruise adopts vehicle economy as a control target. A structure diagram of the control method comprises a safe interval judging module, a running resistance computing unit, an engine universal characteristic curve identifying module, an engine fuel consumption rate optimizing module, an executing control module, an engine, a vehicle ECU (Electronic Control Unit) and a sensor measurement signal. On the basis of ensuring the running safety of the vehicle, and according to the change of road resistance to the vehicle during running of the vehicle, the method is implemented through a closed loop control system which controlling the engine to always operate in an economy area of the engine universal characteristic, namely, the vehicle speed is regulated through controlling the openness of a throttling valve in real time to adapt to the change of the running resistance of the vehicle, so that the vehicle always cruises and runs at an economy speed. Therefore, according to the invention, the fuel economy of the engine can be effectively improved, the fuel consumption of the vehicle per one hundred kilometers can be effectively reduced, and the purposes of saving energy and reducing emission are well realized.

An alternating-current permanent magnet type electric power steering system based on a DSP (Digital Signal Processor) and an electric power steering method belong to the field of automobiles. The electric power steering system comprises a torque turn angle sensor, a vehicle speed sensor, a current sensor, a side acceleration sensor, a yaw acceleration sensor, a motor rotor position sensor, a signal conditioning circuit, a DSP controller, a permanent magnet synchronous motor, a motor drive circuit, a system protection circuit and a communication interface circuit. The side acceleration sensor, the yaw acceleration sensor and the torque turn angle sensor transmit the measured signals to the DSP, after being processed by the DSP through algorithms, the signals such as the electrical angle of the power-assisted motor, the three-phase current and the current vehicle speed are measured by the rotor position sensor, the vehicle speed sensor and the current sensor, and the power-assisted steering and the turn angle control are carried out according to the input signals. With the adoption of the electric power steering system and the electric power steering method, smooth switching between the power-assisted steering control and the vehicle stability is realized, the switching between the turn angle control and the torque control is achieved by a corresponding lower level motor, so that the driving stability of a vehicle and the steering comfort are guaranteed.

The invention discloses a vehicle operation remind control method. The method includes the steps of 1, acquiring the driving intention information of a driver according to the speed information, the accelerator pedal opening degree information and / or speed information; 2, selecting a power shifting rule table or fuel economy shifting rule table according to the driving intention information of the driver; 3, querying the power shifting rule table or fuel economy shifting rule table to acquire the shifting speed according to the vehicle current gear information, engine load information and vehicle speed information; 4, determining a reminding time point according to the vehicle speed information and shifting speed, and reminding the driver when the reminding time point is reached. The method has the advantages that the characteristics of a manual transmission vehicle can be played completely, the power efficiency, economy efficiency, driving comfort and maneuverability of the vehicle can be improved, and the driving safety is guaranteed.

The invention discloses a three-gear wire control automatic transmission of an electric vehicle. one end of an input gear is connected with an input shaft of the transmission, and the other end of the input gear is frequently engaged to a first-gear high speed gear, a second-gear high speed gear, a third-gear high speed gear and a reverse-gear idle gear along the peripheral outer side of the gear; the first-gear high speed gear, the second-gear high speed gear, the third-gear high speed gear and a reverse-gear high speed gear are respectively connected with a first-gear main shaft, a second-gear main shaft, a third-gear main shaft and a reverse-gear main shaft through a first-gear electromagnetic clutch, a second-gear electromagnetic clutch, a third-gear electromagnetic clutch and a reverse-gear electromagnetic clutch; the first-gear main shaft, the second-gear main shaft, the third-gear main shaft and the reverse-gear main shaft are distributed at the periphery of an intermediate shaft of the transmission; an electric control unit controls the joint and the separation of all gears of high speed gears and a driving gear through all gears of electromagnetic clutches to realize the wire control gear shifting control of the three-gear wire control automatic transmission of the electric vehicle. The three-gear wire control automatic transmission of the electric vehicle has such advantages as compact structure, wire control power gear shifting and no mechanical or hydraulic gear shifting parts.

The invention relates to a spring strut arrangement for wheel suspensions of motor vehicles formed of a telescoping shock absorber (12), a suspension spring element (14) preferably designed as a helical compression spring, and a storage spring element (16) preferably designed as a helical coil spring, wherein the spring elements (14, 16) are supported by spring caps (28, 30) on the body (22) of the motor vehicle and on a wheel suspension element (24), and third spring cap (34) located therebetween is displaceably guided relative to the body (22) along the longitudinal axis of the shock absorber by means of an electrically driven positioning drive (32) disposed within the spring elements (14, 16), wherein the positioning drive (32) comprises a positioning spindle (36) rotatably supported about the shock absorber and a positioning nut (40) connected to the displaceable spring cap (34). According to the invention, the shock absorber (12) is disposed on the body (22) of the motor vehicle with the damping tube (46) upward, and the positioning spindle (36) is rotatably supported on the damping tube (46).

A method and a device for controlling an electrically operated supercharger are proposed, which cooperates with an exhaust-gas turbocharger for compressing the air supplied to the internal combustion engine. The controlling of the electrical supercharger (ES) is implemented via a control signal, which is generated as a function of a predefined value for the compressor-pressure ratio of the electrical supercharger.

The invention discloses a planetary intelligent self-adaptive two-gear multi-cam automatic speed change driver which comprises a power device, a box body, a transmission shaft, a planetary transmission mechanism, a circular ring body axial outer conical sleeve and a circular ring body axial inner conical sleeve, wherein the transmission shaft is sleeved by the circular ring body axial outer conical sleeve which is transmitted by a helical cam pair; and the planetary transmission mechanism adopts a slow gear transmission mode and has a multi-end-face-cam transmission structure. The planetary intelligent self-adaptive two-gear multi-cam automatic speed change driver has all the advantages of existing cam self-adaptive automatic speed change devices and outputs slow gear power through the planetary transmission mechanism; by adopting the multi-end-face-cam slow gear transmission structure, the transmission efficiency is improved, the sensitivity during gear shifting can be guaranteed, sudden jerk and clamping stagnation which are caused by gear shifting can be eliminated, and the driving and riding comfortableness is improved; and furthermore, energy is saved, consumption is reduced, and the dynamic property, the economical property, the driving safety and the comfortableness of vehicles are greatly improved.

The invention relates to a control method, in particular to a control method for an automotive active suspension system. The problem that design models are simple, and single-target control is mainly adopted in the conventional suspension control technologies, so that external uncertain disturbance and unmodeled dynamics cannot be coped with is solved. The control method specifically comprises the following steps of: establishing a nonlinear active suspension model; designing a nonlinear robust controller; and regulating gains k1, k2, epsilon1 and epsilon2 to ensure that all constraints are limited within a permissible range, namely to realize constraint control. The control method is used for the control and the stabilization of the automotive active suspension system.

A method and an apparatus for controlling a semi-active suspension system (1) for motorcycles are described. According to the present invention, the damping forces applied to controllable force generators (2, 3), such as controllable shock absorbers, provided to the front and the rear semi-active suspensions of a motorcycle are jointly controlled. In particular, the pitch velocity (Vp) of the suspended mass (Ms) is taken into account so as to jointly control the front and rear suspension systems of a motorcycle. The present invention allows the optimization of the global adherence of the motorcycle to the road surface and of the driving and the travelling comfort of the vehicle.

The invention relates to a footrest and aims at providing a footrest capable of keeping the supporting effect for the left and right feet to be balanced when a vehicle is subjected to impact. The footrest comprises a lower footrest plate obliquely arranged between an automobile floor and a front surrounding plate, an upper footrest plate is arranged on the lower footrest plate, the bottom edges of the lower footrest plate and the upper footrest plate are hinged, and an elastic part is arranged between the lower footrest plate and the upper footrest plate. The footrest has the advantages of enabling the left and right feet to be subjected to the same supporting force, meanwhile playing a buffering role through the elastic part between the upper footrest plate and the lower footrest plate and suitable for popularization and usage.

The invention discloses a method for controlling an automatic air conditioning for an automobile. The method comprises the following steps of 1, acquiring the temperature in the automobile by using an inner temperature sensor in the automobile, acquiring an illumination intensity signal by using a sunlight sensor, and acquiring ambient temperature outside the automobile by using an outer temperature sensor; 2, acquiring an output value of the inner temperature sensor, an output value of the sunlight sensor and an output value of the outer temperature sensor by using an electronic controller, and calculating a TAO value according to the output value of the inner temperature sensor, the output value of the sunlight sensor, the output value of the outer temperature sensor, and a temperature value set by a user; 3, automatically controlling the temperature mixing air door opening, the air volume, air outlet modes and internal and external circulation by using the electronic controller according to the TAO value obtained in the step 2, wherein the step 3 comprises the following substeps of 3a, controlling the temperature mixing air door opening; 3b, controlling the air volume; 3c, controlling the switching of the air outlet modes; 3d, controlling the switching of internal and external circulation. According to the method, the indoor temperature of the automobile can be stabilized near the value expected by the user, and ultralow or ultrahigh temperature can be avoided.

The invention relates to the field of motor control and provides a motor output torque control method and device and an automobile and aims to solve the technical problem of failure in realization ofautomobile driving and braking through one pedal in the prior art. The motor output torque control method in an embodiment includes: determining a driving mode of the automobile; acquiring acceleratorpedal openness and motor rotating speed when the driving mode of the automobile is a single-pedal driving mode; determining a motor initial output torque according to the accelerator pedal openness and motor rotating speed; subjecting the motor initial output torque to torque limiting value processing to obtain a torque after torque limiting value processing, and outputting. The motor output torque control method and device and the automobile have the advantage that automobile driving or braking through one pedal namely the accelerator pedal is realized.

The invention discloses a self-adaptive two-speed automatic speed-change wheel hub of side hung cone disc type, comprising a left wheel hub frame, a right wheel hub frame, a housing, a power device, a transmission shaft, a wheel, a brake device arranged on the transmission shaft, a driving shaft driven by the momentum equipment, a gear speed-change mechanism arranged on the speed-change gear axis and a cone disc type self adaptive two-speed automatic speed-change assembly. The driving shaft and the speed-change gear axis are arranged in the housing and are in parallel to the transmission shaft. The self-adaptive two-speed automatic speed-change wheel hub of side hung cone disc type has the advantages that the output power of the motor and the driving status of the vehicles are always in an optimum matching status to achieve the balanced control of the driving moment of the vehicles and the synthesized driving resistance; the speed change can be operated automatically along with the change of the driving resistance by the self adaptive without cutting off the driving force, so that the invention is conducive to the energy-efficiency of the vehicles and the mechanical power equipment, and can satisfy the usage under the conditions of mountain areas, hills and heavy loads; and the transmission of the invention has a light weight and a compact structure.

The invention discloses a deep reinforcement learning-based low-speed vehicle following decision-making method, which is implemented in the following manner: at first, receiving position, speed and acceleration information of front and back vehicles as an environmental state in real time through the Internet of vehicles, and expressing a present state and behavior of an unmanned vehicle; then, constructing an Actor-Critic framework-based deep reinforcement learning structure; and finally, selecting, by Actor, an appropriate action according to the present environmental state, and continuouslyperforming training and learning through an evaluation made by Critic, thereby obtaining an optimal control strategy to ensure that the unmanned vehicle can be kept at a certain safe distance away from the front and back vehicles and implement automatic low-speed running of the vehicle following the front vehicle under an urban congestion working condition. According to the deep reinforcement learning-based low-speed vehicle following decision-making method, the driving comfort is improved, the traffic safety is also ensured, and the clarity of a congested lane is further improved.

A method is described for limiting a change in torque transmitted through a vehicle powertrain when in a predetermined range. Such a method minimizes transmission gear separation, or "clunk". In one approach, the rate of change of powertrain output is limited when powertrain output is near zero transmitted torque. The limitation is not used under other circumstances so as not to hinder driver performance.

A hybrid vehicle includes a plurality of motor generators and an engine for generating a vehicle-driving force. A motor ECU controls the motor generators in accordance with respective torque command values for the motor generators. The motor ECU selects a motor generator used for performing vibration-reduction control, based on the operating state of the motor generators each. The output torque of the motor generator used for the vibration-reduction control is controlled so that a compensation torque corresponding to a periodic vibration-reduction torque component for cancelling out a periodic variation component of the rotational speed of drive wheels is superimposed on the torque for generating the vehicle-driving force.

A method for optimize that zero-crossing torque shock of a motor of a new energy vehicle settles a problem of vehicle impact caused by the change of front and rear abutment surfaces of driving gears in the driving process of new energy vehicle, and the abutment impact of driving gears is reduced. The method comprises the steps of detecting the zero crossing torque of motor; wherein the zero crossing torque of motor includes zero crossing from positive torque to negative torque and zero crossing from negative torque to positive torque, and detecting a zero crossing point of torque by means of azero crossing detection algorithm; after the zero crossing point of torque is detected, limiting the slope of the rising or falling torque to change the original change trajectory of torque so as toachieve the purpose of reducing the zero crossing impact of torque and improving the driving comfort.

A seamless bridge for road is composed of main beams, bridge piers, lap-jointed plates and sleeper beams, and features that said lap-jointed plate is connected between main beam and sleeper beam and one or more layers of earth material are spread on said lap-jointed plate.

A hybrid electrical vehicle (HEV) control system and method, the control system comprising a transmission device (10), an engine power subsystem (20), a motor power subsystem (30) and a controller (40); the controller (40) enables the HEV to enter a hybrid power economical mode by controlling the engine power subsystem (20) and the motor power subsystem (30); if a detected current gradient signal is below or equal to a gradient lower threshold, and the SOC of a power battery (7) is below or equal to a first electric quantity threshold, or if the current gradient signal is below or equal to the gradient lower threshold, and the maximum allowable discharge power of the power battery (7) is below or equal to a first power threshold, then the controller (40) controls the HEV to operate in a low-power mode. In a parallel connection, the control system enables easy power matching, and provides high conversion efficiency and a high starting point of an engine, effectively reducing fuel consumption and emissions, reducing frequent engine start and stop, thus extending the service life of a starter, reducing noise during vehicle travel, and improving driving comfort.

The invention provides an adaptive cruise torque control method and device and an electric vehicle. The method includes the steps of obtaining the relative speed and time interval between the electricvehicle and a target vehicle in front of the electric vehicle; determining whether there is a braking demand for the electric vehicle according to the relative speed or the time interval; if there isthe braking demand for the electric vehicle, according to the relative speed, determining a target braking demand torque of the electric vehicle; according to the preset priority of modules for torque control, controlling the corresponding module to perform torque control on the electric vehicle so as to cause the actual braking torque output to the electric vehicle to be the target braking demand torque, wherein the modules for torque control include a complete vehicle longitudinal control module, a driving assistance deceleration control module and an electronic stability control system. According to the adaptive cruise torque control method and device, the output torque of the electric vehicle is controlled according to torque control logic of the priority of the modules used for the torque control, not only can the safety of complete vehicle driving be improved, but also driving comfort can be improved, and the control disorder problem that may occur is solved.