1552 results about "Brake control" patented technology

The invention relates to the technical field of automobile brake control, in particular to a self-adaptive brake kinetic energy recovery control method and system based on multi-sensor fusion. Tire wear and road surface feature data are collected through a multi-source sensing fusion unit, and a tire wear coefficient and a road surface friction coefficient are generated through an intelligent decision calculation unit; the method comprises the following steps of: integrating the nonlinear correlation of the multi-source sensing fusion unit and the self-adaptive control execution unit through a rule and data fusion algorithm, outputting a comprehensive friction coefficient, and dynamically adjusting the braking kinetic energy recovery force and response time by the self-adaptive control execution unit according to the comprehensive friction coefficient. The system comprises a multi-source sensing fusion unit, an intelligent decision calculation unit, the self-adaptive control execution unit and a closed-loop feedback calibration unit. The closed-loop unit corrects data deviation through cross validation of the laser radar and the motor torque inversion model, the problems of poor working condition adaptation and unreliable data are solved, and the kinetic energy recovery efficiency, the braking safety and the driving smoothness are improved.

The invention discloses an intelligent control method and system for motorcycle calipers. According to the method, multi-modal data such as vehicle speed, wheel speed, piston displacement, brake disc temperature, inclination angle and transverse acceleration are collected in real time through a multi-source sensor and are preprocessed; calculating a braking demand and an adhesion coefficient according to the data, and recognizing a straight line, a curve or an emergency braking scene in combination with the inclination angle and the transverse acceleration; inputting the data into a pre-trained brake control machine learning model to generate a target brake force change curve; controlling the driving motor and the calipers to brake based on the curve, and regularly optimizing the model according to brake feedback and historical data; predicting a braking efficiency attenuation trend by combining a part degradation model, and compensating the braking force to update the model; the motor current is adjusted in real time through closed-loop control so as to follow the target braking force; and continuously monitoring the temperature of the brake disc, and triggering thermal attenuation compensation when the temperature exceeds a threshold value. According to the invention, self-adaptive, accurate and reliable intelligent braking of the motorcycle is realized.

The invention discloses a braking control optimization method and system combined with vehicle multi-state perception, and belongs to the technical field of vehicle intelligent control, and the method comprises five steps of multi-source data acquisition, data preprocessing, multi-state risk modeling, multi-target braking force distribution and braking control optimization. Based on a tire dynamic model and a semantic physical double-source weighting mechanism, generating high-precision vehicle multi-state sensing feature data; a multi-state risk modeling method based on path prediction and a physical constraint model is combined with a dynamic risk weight adjustment mechanism to calculate a comprehensive target deceleration; a multi-objective optimization function including the braking distance, the stability and the tire reliability is constructed, and four-wheel braking force distribution and coaxial cooperative control are carried out; and pressure control is executed according to the optimization result, and brake control optimization is achieved. According to the method, real-time self-adaptive adjustment of the brake control strategy can be achieved under the complex environment and multiple working conditions, and the safety, stability and response precision of braking are improved.

The invention discloses a brake pedal verification method, device and equipment based on a two-way pedal and a storage medium, relates to the technical field of vehicle brake control, and discloses the brake pedal verification method based on the two-way pedal. Comprising the steps that a brake lamp switch signal, an allowable deviation threshold value and a first sensor signal and a second sensor signal of a two-way pedal position sensor are obtained; performing processing according to the first sensor signal and the second sensor signal to obtain a target deviation value, and performing consistency analysis according to the target deviation value and the allowable deviation threshold to obtain a consistency analysis result; performing fault tracing on the consistency analysis result according to the brake lamp switch signal to obtain a fault positioning result; and fault isolation is carried out based on the fault positioning result, so that brake pedal verification based on the two-way pedal is completed. The technical effect of guaranteeing the signal reliability of the two-way pedal position sensor and the function continuity of the braking system is achieved.

The invention discloses a linkage device, an integrated main control unit and an ABS brake system.The linkage device comprises a valve body, a piston assembly and a one-way sealing element, the valve body comprises a first cavity, a second cavity and a second oil way, and the first cavity is communicated with the second oil way and the second cavity; the piston assembly slides in the first cavity in a reciprocating mode along the axis, part of the piston assembly can enter the second oil way, a gap is formed between the piston assembly and the valve body, a plurality of small holes are evenly formed in the side wall of the piston assembly, the piston assembly is provided with an elastic element, and the one-way sealing piece is arranged in the annular groove of the valve body and located on the outer side wall of the piston assembly. The one-way sealing piece is in sliding connection with the piston assembly, and the one-way sealing piece and the small holes jointly serve as a structure for controlling opening and closing of the internal liquid channel. The linkage device solves the problems that in the prior art, a one-way oil seal of a linkage device is prone to failure, the pressure relief hole diameter is too small, and then the efficiency and safety of a braking system are affected.

The invention discloses a redundant braking control method of an automatic driving vehicle and a storage medium, which are applied to a vehicle control unit. According to the method, when it is detected that an automatic driving module, anti-collision early warning or remote monitoring triggers a braking demand, the target deceleration is calculated in combination with the vehicle speed and the obstacle distance. By collecting the actual acceleration, the parking air chamber air pressure and the motor torque, the total braking force is estimated, the electronic parking braking force is separated out, and then the road adhesion coefficient is calculated. And in the redundant braking mode, according to the target deceleration, the attachment condition and the capacity upper limit of the two systems, performance indexes including deceleration deviation and a parking penalty term are constructed, and the target motor deceleration and the target electronic parking deceleration are obtained through joint distribution. And finally, the target parking deceleration is converted into target air pressure through the deceleration air pressure mapping table containing the online correction amount, the air pressure is adjusted through closed-loop control, and accurate and stable redundant service braking is achieved.

The embodiment of the invention relates to the technical field of vehicles, and discloses a vehicle braking control method and device and a vehicle. The vehicle braking control method comprises the steps that under the condition that the vehicle is in a sliding state, an electric braking correction coefficient is determined based on road surface information and speed information of the vehicle; the road surface information is used for representing parameter values of road surface parameters influencing the braking performance; based on the electric braking correction coefficient and the maximum allowable electric braking torque of the sliding working condition of the braking motor, the target electric braking torque of the vehicle is determined; determining a hydraulic compensation torque based on a total braking torque of the vehicle and the target electric braking torque; and brake control is conducted on the vehicle based on the target electric brake torque and the hydraulic compensation torque. By means of the technical scheme, the target electric braking torque can be accurately matched with the road surface information and the speed information of the vehicle, and therefore the braking control accuracy is improved.

The invention relates to a cooperative braking control method and device based on a road adhesion coefficient and energy recovery. The method comprises the steps that vehicle state parameters of a current control period are obtained, and the vehicle state parameters comprise the vehicle longitudinal speed, the vehicle transverse speed, the vehicle yaw velocity and the angular velocity of each wheel; a preset prediction model is solved according to the vehicle state parameters and the constraint conditions, and the control quantity of each wheel in the next control period is obtained; wherein the prediction model takes closer actual longitudinal speed to expected longitudinal speed, maximization of regenerated energy, stable change of controlled quantity and convergence of slip rate of each wheel as targets, and the constraint conditions comprise a wheel constraint condition, a motor hydraulic system constraint condition, a battery charging power constraint condition and a braking force constraint condition. The wheel constraint condition is related to the road adhesion coefficient corresponding to each wheel. By the adoption of the method, the energy recovery efficiency can be maximized, and the stability and safety of the vehicle are guaranteed.

A brake assist control method and apparatus, and a computer-readable storage medium and a vehicle. The method comprises: when a vehicle is under a braking working condition, determining a target steering angle of a left rear wheel and a target steering angle of a right rear wheel on the basis of steering information, sideslip information and motion state information of the vehicle, wherein the motion state information of the vehicle comprises the speed of the vehicle, the slip ratio of the left rear wheel and the slip ratio of the right rear wheel; and controlling the steering of the left rear wheel on the basis of the target steering angle of the left rear wheel, and / or controlling the steering of the right rear wheel on the basis of the target steering angle of the right rear wheel, so as to increase the braking deceleration of the vehicle.

The invention discloses a vehicle control method, a related device, equipment and a medium, and the vehicle control method comprises the steps: determining a stability parameter of a vehicle through first vehicle state data; selecting a control mode matched with the stability parameter from a plurality of preset control modes as a target control mode; wherein different preset control modes correspond to different steering brake control strategies; and controlling the vehicle to run according to the target control mode. In the mode, the adaptive steering brake control strategy is adaptively selected according to the stability parameters of the vehicle to control the vehicle, the out-of-control risk of the vehicle can be reduced, and the running stability and safety of the vehicle are improved.

The invention relates to the technical field of scissor fork truck brake control, and discloses a scissor fork type aerial work platform walking brake control system and method.The scissor fork type aerial work platform walking brake control method is characterized in that an operation handle enables a key to reset and triggers a brake request, and initialization and triggering of a brake control sequence are achieved; the state of the shear fork truck is monitored, gradient and load information is collected, and the external environment working condition and the internal load state are synchronously obtained by calling data of a tilt angle sensor and a pressure sensor in real time; according to rapid braking of the shear fork truck, based on data collected in real time, a three-stage cooperative braking strategy of speed reduction, pressure relief and turn-off is adopted, and based on gradient information collected in real time, the switching time sequence between stages is adjusted in a self-adaptive mode, and accurate matching of the braking process, dynamic loads and topographic conditions is achieved; therefore, the effect of considering the braking efficiency and the terminal parking stability on the premise of no mechanical wear is achieved; and the shear fork truck completes braking and tends to stop stably. And different working conditions can be quickly, stably and adaptively adapted.

The present disclosure relates to a brake system and a method of controlling the same, the brake system including first and second wheel speed sensors respectively installed in wheels of a vehicle, electrohydraulic brakes respectively installed in front wheels of the vehicle, electromechanical brakes (EMBs) respectively installed in rear wheels of the vehicle, and a first controller configured to perform braking control on the electrohydraulic brakes and the electromechanical brakes based on a first front wheel speed signals outputted from the first wheel speed sensors installed in the front wheels, in which when a failure of the first wheel speed sensors installed in the front wheels are identified, the first controller performs the braking control on the electrohydraulic brakes and the electromechanical brakes based on the first rear wheel speed signals outputted from the first wheel speed sensors installed in the rear wheels.

A brake control apparatus is provided for a vehicle train having a tractor and one or more towed vehicles coupled to the tractor. The brake control apparatus comprises a tractor controller arranged to detect a pressure change in at least one brake line of the vehicle train in response to a brake trigger signal. The tractor controller is also arranged to process the detected pressure change to estimate a combination of the number of the towed vehicles and a total length of the number of towed vehicles coupled to the tractor.

The embodiment of the invention discloses a vehicle anti-lock braking control method, a medium, equipment and a product. The vehicle anti-lock braking control method comprises the steps that the braking pressure difference of a vehicle in the braking process and multi-modal data used for representing the current road surface where the vehicle is located are obtained; determining a pavement adhesion coefficient of a pavement where the vehicle is currently located, load data of the vehicle and an actual slip rate of the vehicle according to the multi-modal data; calculating a target slip rate of the vehicle according to the road adhesion coefficient, the load data and a preset load; a braking force distribution instruction is generated according to the road adhesion coefficient, the target slip rate, the actual slip rate and the braking pressure difference of the vehicle in the braking process; a brake pressure for anti-lock braking of the vehicle is controlled based on the braking force distribution command. The limitation that a traditional method depends on a single wheel speed signal can be broken through, the control target is dynamically adjusted according to the real-time road surface and the vehicle state, and the problem that traditional fixed slip rate control is insufficient in performance under the complex working condition is solved.

The invention provides a desktop-level hardware-in-the-loop test system building method, device and equipment, and relates to the technical field of hardware-in-the-loop simulation, and the method comprises the steps: configuring a vehicle network simulation and vehicle dynamics model in an upper computer with a CAN development environment and vehicle dynamics simulation software, a real-time data channel between the two is established through a full duplex transmission protocol; a driver instruction is generated through the driving control panel, and a vehicle state signal is generated through vehicle dynamics software; the wheel speed in the vehicle state signal is converted into a physical excitation signal, and a wheel cylinder pressure signal returned by the controller is collected; the pressure signal is fed back to the vehicle dynamics model to form a closed loop, a test scene is executed, and the desktop-level hardware-in-loop test of the brake controller is completed. By using vehicle dynamics simulation software, the test confidence coefficient is improved; data exchange is carried out by utilizing an FDX protocol of a CAN development environment, and complexity and potential risks of self-development of a communication interface are avoided.

A construction machine includes a travel actuator, an attachment actuator, a storage, an information obtaining device, and a hardware processor configured to perform braking control of at least one of the travel actuator and the attachment actuator in response to determining that a dangerous situation is going to occur based on information obtained by the information obtaining device and information stored in a database in the storage.

An electronic park brake system includes a first electronic control unit configured to receive and compare at least first and second speed inputs and provide a quality indicator signal indicating a quality of a vehicle speed signal being delivered to an electronic brake control unit. The electronic park brake control unit is configured to receive the quality indicator signal and the vehicle speed signal, determine a motion state of the vehicle and maintain a full operational state of an electronic park brake if the quality indicator signal is a high quality signal, and limit the operational state of the electronic park brake if the quality indicator signal is a medium quality signal or a low quality signal.Methods of using the system are also provided.

The invention provides a self-adaptive braking control method, device and equipment based on a road adhesion coefficient, and relates to the technical field of vehicle control, and the method comprises the steps that multi-source sensor data of a vehicle is collected to determine the road adhesion coefficient corresponding to a road where the vehicle is located currently; when it is monitored that the vehicle has the collision risk, a braking control instruction corresponding to a braking system of the vehicle is generated according to the road adhesion coefficient, so that the braking system conducts braking operation on the vehicle based on the braking control instruction; and in the braking operation implementation process, multi-source sensor data are repeatedly collected so as to conduct self-adaptive updating on the road adhesion coefficient and the braking control instruction till the collision risk is relieved. The braking instruction can be dynamically adjusted in combination with the road adhesion characteristics, and the applicability and safety of the intelligent driving system under the complex road condition are improved.

This invention provides a hybrid power drive device and a vehicle having the same. The hybrid power drive device includes an engine, a first motor, a second motor, and a compound planetary gear set. The output end of the engine is driven to the motor shaft of the first motor. The motor shaft of the second motor drives the wheels to rotate. A first sun gear meshes with a first planetary gear, and both the second sun gear and the first planetary gear mesh with a second planetary gear. The second planetary gear meshes with a ring gear, and the ring gear is driven to the wheels. A brake controls the operating state of the second sun gear, a first clutch controls the engagement or disengagement of the engine output end with the first sun gear, and a second clutch controls the engagement or disengagement of the engine output end with the planetary carrier. The technical solution provided in this application solves the problem in related technologies where hybrid power drive devices struggle to simultaneously achieve efficiency and compactness across multiple operating modes, as well as flexible drive switching.

A trailer ABS system is provided with an ABS valve in which pressure to the control chamber is switchable by a 2 / 2 solenoid valve, the solenoid valve being switchable between a first position in which the control chamber is pressurized by the control pressure and a second position, in which the control chamber is connected to the exhaust. The braking ECU is operable to actuate the solenoid between the first and second positions to thereby provide ABS functionality.

The invention discloses an intelligent vehicle emergency obstacle avoidance braking control method and system, and relates to the technical field of automatic driving, and the method comprises the steps: obtaining historical vehicle driving data and historical vehicle user monitoring data, constructing a driving behavior analysis model, and evaluating the vehicle driving user reaction capability under collision early warning; obtaining a plurality of historical emergency obstacle avoidance brake control triggering scene big data and the collision early warning response capability of a vehicle driving user, constructing a personalized dynamic brake redundant space evaluation model, and generating a collision early warning response personalized redundant space of the vehicle driving user; real-time vehicle surrounding environment data are obtained, collision early warning response personalized redundant space of a vehicle driving user is used as a radius, a vehicle road environment collaborative risk field function is established, a vehicle traveling dynamic risk field is output, a vehicle emergency obstacle avoidance brake control mechanism is established, and a decision of a dynamic virtual hoist rope is generated. The method has the beneficial effects that the strong robustness for dealing with uncertainty is considered, and the risk avoiding success rate is remarkably improved.

The present disclosure relates to a vehicle control method, a vehicle control device, and a vehicle control system including same. Specifically, a vehicle control device according to the present disclosure includes: a vehicle travel route estimation unit which estimates a first travel route of a vehicle on the basis of the turn radius and traveled distance of the vehicle, when the speed of the vehicle is equal to or less than a preset speed; a target travel route predicter which confirms a target from periphery detection information about the periphery of the vehicle, and predicts a second travel route of the target; a collision determiner which determines whether there is a possibility of a collision between the vehicle and the target; and a vehicle control unit which controls to perform at least one among an alert control, a brake control, and an avoidance control, when there is a possibility of a collision between the vehicle and the target.

A method for controlling anti-skid braking in civil aircraft involves constructing an anti-skid braking model and flight dynamics and kinematics models of the aircraft to analyze the forces acting on the aircraft system and obtain the corresponding forces and torques. For the anti-skid braking system, a BSMC controller is designed to control the braking coefficient μ. Brake This invention controls the braking force to ultimately control the anti-skid braking system of civil aircraft. It uses a backstepping slip mode controller (BSMC) to control the aircraft's braking commands, ensuring the system maintains the optimal slip ratio during braking, maximizing braking efficiency, reducing wheel wear, and minimizing the cost of the aircraft's braking system.

The invention relates to a configuration method, device and equipment of a train operation control system, a medium and a computer program product. The method comprises the following steps: starting a virtual marshalling test under the condition that the train control on-board equipment, the brake control unit, the log recording device and the satellite positioning module are all in a normal working state; obtaining at least one of departure positioning time data, general braking feedback time data, emergency braking feedback time data and idling and slipping data through a dynamic adjustment test; direction and handle acquisition fault time data are obtained through a static adjustment test, and general braking exhaust time data are obtained through combination of the static adjustment test and a dynamic adjustment test; and integrating test data obtained by the dynamic tuning test and / or the static tuning test and / or the combination of the static tuning test and the dynamic tuning test, and outputting virtual marshalling configuration data. By adopting the method, the key parameters in the train operation process can be dynamically obtained, the requirements of different virtual marshalling and different operation scenes are met, and the overall safety and reliability of the system are improved.

The invention discloses an intelligent brake control system and a high-cold-wind wind generating set, and relates to the technical field of wind energy industries. A sensor module is used for collecting airflow parameters, blade state parameters and wind wheel operation parameters in real time, and a controller is in signal connection with the sensor module; the controller is used for being installed in a control cabinet at the bottom of a tower of the high-cold-wind wind generating set, the controller is configured to judge whether an extreme strong wind protection mode is triggered or not according to collected parameters, the executing mechanism is in communication connection with the controller, and the mechanical brake is used for being installed at a main shaft brake disc of the high-cold-wind wind generating set. The variable-pitch driving device is used for being integrated in a hub of the high-cold-wind wind generating set so as to be used for adjusting the pitch angle of a blade, and the executing mechanism is configured to execute a mechanical brake control strategy in an extreme strong wind protection mode and control a mechanical brake to be separated from a brake disc after the blade feathering and wind wheel rotation speed are reduced to a safe rotation speed. And the wind wheel in the feathering state is in a free rotation state.

The invention provides a vehicle braking control method and system and electronic equipment, and relates to the field of vehicle braking control. According to the method, when a hydraulic braking system and a wheel speed sensor fail at the same time, vehicle state information can be obtained through an inertial sensor of a vehicle; and an accurate braking instruction is generated to control the parking brake to carry out emergency braking on the vehicle, so that the potential safety hazard that the parking brake cannot be controlled through an electronic hand brake to carry out emergency braking on the vehicle when a hydraulic braking system and a wheel speed sensor simultaneously fail in the prior art is solved.

The application discloses a train braking system distributed cooperative analysis platform, which comprises a system simulation area, a data acquisition area, a data intelligent analysis area and the like. The data acquisition area acquires vehicle data and transmits the vehicle data to the system simulation area. The system simulation area outputs vehicle simulation data through model-in-loop simulation, rapid control prototype simulation and hardware-in-loop simulation according to the vehicle data. The data intelligent analysis area performs fault diagnosis on a train braking system according to the vehicle data and the vehicle simulation data, and outputs a solution to eliminate faults according to a diagnosis result. The application takes an electronic brake control unit, a pneumatic brake control unit, a basic brake unit and other key components as main control objects, establishes a train braking system distributed cooperative analysis platform based on model simulation and big data analysis, and solves problems existing in system design, system test verification and system operation and maintenance.

The invention discloses a reciprocating type passenger ropeway constant deceleration control system, and relates to the technical field of brake control. According to the method, the first-stage constant deceleration braking mode and the second-stage constant torque braking mode are set, analysis is carried out through the second-stage braking conversion algorithm, the deceleration abnormal index, the speed tracking abnormal index and the response abnormal index are output, then the mode abnormal total value is obtained, the braking state is judged, self-adaptive mode switching is achieved, and the braking efficiency is improved. Constant braking deceleration is maintained, swinging of a hanging box is reduced, comfort of passengers is improved, brake rubber abrasion is reduced, meanwhile, regional debugging is not needed, and the operation difficulty of a construction site is reduced; hydraulic loop parameters are analyzed through a failure judgment logic algorithm set by the hydraulic redundancy protection module, a loop abnormal total value is output, and hydraulic loop switching is carried out based on the loop abnormal total value; and through visual display of the fault memory interaction module, the safety redundancy of the braking system is improved, fault tracing and maintenance are facilitated, and the running reliability of the cableway is guaranteed.

The invention relates to the technical field of new energy automobile braking control, and discloses an electro-hydraulic hybrid electric vehicle braking force coordination control method based on the braking demand change rate, and the method comprises the steps: collecting the opening degree of a brake pedal in real time, and calculating the braking demand torque and the change rate thereof; based on the battery SOC, the braking demand change rate and the vehicle speed, the braking force distribution allowable proportion and the braking torque of the motor / battery power system are determined through a nonlinear mapping module; collecting the pressure state of the hydraulic system and determining the braking torque of the hydraulic system; on the premise that the total braking demand torque is met, the braking torque of a motor / battery power system, a hydraulic system and a mechanical system is distributed in a layered and coordinated mode. The braking intention emergency degree can be dynamically recognized, the braking safety, the response speed and the energy recovery efficiency are considered, and the stability, smoothness and engineering applicability of a braking system are improved.