497 results about "Brake-by-wire" patented technology

The invention relates to a vehicle brake-by-wire method and system, and relates to the technical field of brake-by-wire, and the method comprises the steps: obtaining environment information around a vehicle and vehicle attitude information; identifying road conditions based on the environment information and obtaining dynamic parameters of the vehicle based on the vehicle attitude information and a vehicle dynamics model; obtaining a vehicle state evaluation result based on the identified road condition and the vehicle dynamic parameters; the vehicle state evaluation result is obtained based on the driving state and the potential risk of the vehicle under the current road condition; determining a braking force distribution proportion and an adjustment amount of each wheel by using a braking force distribution matrix and a braking force adjustment algorithm based on the vehicle state evaluation result; and adjusting the brake fluid pressure of each wheel based on the determined brake force distribution ratio and adjustment amount of each wheel.

The invention provides a brake-by-wire method and system based on personalized feature learning and intention evolution prediction and a vehicle. The invention discloses a brake-by-wire method based on personalized feature learning and intention evolution prediction. The brake-by-wire method comprises the following steps: acquiring real-time braking operation information of a driver, current state information of a vehicle and driving environment information of the vehicle; personalized braking characteristic parameters of the driver are obtained or updated; predicting a current braking intention type of the driver by utilizing a preset driving intention recognition model integrated with an attention mechanism; predicting the evolution trend of the current braking intention in a preset future time window; determining a group of target braking characteristic parameters according to the predicted current braking intention type and evolution trend in combination with the current state information of the vehicle and the driving environment information of the vehicle; and a brake control instruction of the brake-by-wire system is dynamically adjusted. According to the invention, more intelligent, smoother and predictable line control brake is realized.

The invention discloses a drive-by-wire chassis electric vehicle hardware-in-the-loop simulation test bench and a power chassis domain integrated control architecture thereof. The test bench comprises a driving simulation system, an electric drive system, a drive-by-wire brake system, a drive-by-wire steering system, an active suspension system, a power chassis domain integrated control system, a vehicle real-time simulation system and a bench measurement and control system. And the power chassis domain integrated control system receives a driver instruction, road environment and vehicle model information and response information of each execution system of the power chassis and the load simulation device of the execution system to complete decision-making instruction sending. The power chassis domain integrated control system adopts a hierarchical control architecture and comprises a vehicle motion stability judgment layer, a vehicle motion integrated control layer and an actuator and load control layer thereof. The system is used for testing and verifying control algorithms of various movement modes such as transverse and longitudinal movement modes, transverse and vertical movement modes and transverse, longitudinal and vertical movement modes of the drive-by-wire chassis intelligent electric vehicle, and has the characteristics of complete drive-by-wire chassis functions, high power chassis domain fusion degree, wide test coverage and the like.

The invention relates to the technical field of brake-by-wire systems, in particular to a hydraulic brake-by-wire system which has double pressure source control, a first BSM module and a second BSM module can independently provide brake fluid, when one of the first BSM module and the second BSM module loses a hydraulic power source, the other of the first BSM module and the second BSM module still has the hydraulic power source, the pressure of the first BSM module and the pressure of the second BSM module are subjected to split-axis regulation and control, and the brake fluid can be independently supplied. Compared with a traditional hydraulic braking system with four wheels controlled by the same pressure source, when a heavy-duty vehicle enters EBD control, front wheels are independently pressurized without being influenced by pressure relief of the rear wheels while pressure relief of the rear wheels, braking force loss can be reduced, the first BSM and the second BSM communicate and interact through a private CAN during normal work, and when the private CAN breaks down, the braking force loss is reduced. The first BSM transmits a pedal travel signal to the second BSM through the whole vehicle public CAN; when the first BSM breaks down, a pedal travel signal is transmitted to the second BSM through the hard wire PWM, and in addition, the liquid supply amount of brake liquid can meet the requirements for brake time and brake deceleration of a larger-tonnage automobile or truck in the mode that the two WCBSs control two wheels respectively.

The invention relates to an abnormal protection method and device for a brake-by-wire system and a vehicle, and relates to the technical field of brake-by-wire systems, and the method comprises the steps that real-time monitoring data are obtained through a temperature sensor, a pressure sensor and a flow sensor which are arranged on a brake disc and a brake pipeline; judging the working state of the brake-by-wire system based on the monitoring data; on the basis of historical braking data, vehicle driving condition data and the monitoring data, the abnormal condition of the braking system is predicted on the basis of a pre-trained brake-by-wire system performance prediction model; determining a final abnormal condition based on the working state judgment result and the predicted abnormal condition; and when the final abnormal condition is displayed to be abnormal, a pedal curve reactivity adjusting action, a power limiting action, a vehicle speed limiting action and a reminding action are executed, and the braking energy recovery force is adjusted according to the abnormal severity degree.

The invention relates to the technical field of brake-by-wire, and provides a self-adaptive fluid infusion control method, device and equipment for a brake-by-wire system. The method comprises the steps that when a to-be-controlled vehicle enters a braking mode, the deceleration and the running speed of the to-be-controlled vehicle are obtained; according to the deceleration, the road surface type of the road surface where the to-be-controlled vehicle is located is recognized, and the road surface type is the type obtained by dividing the road surface based on the adhesion coefficient; and determining a liquid supplementing strategy according to the road surface type and the driving speed, and controlling the to-be-controlled vehicle to supplement liquid based on the liquid supplementing strategy. The method has the core advantages that the attachment type of the current road surface is recognized by obtaining the deceleration and the driving speed of the vehicle, and the optimal liquid supplementing strategy is selected accordingly. According to the method, the inherent defect that a traditional fixed parameter fluid infusion strategy is single in performance under different road conditions is overcome, and the performance optimal balance within the full working condition range is achieved. The intelligent self-adaptive mechanism greatly improves the comprehensive performance and the driving experience of the brake-by-wire system.

The invention provides a vehicle attitude control device and method, and relates to the technical field of vehicle control. The device comprises the steps that a brake-by-wire system collects the wheel speed of each wheel of a vehicle and obtains attitude data, deviation calculation is conducted on the attitude data and the wheel speeds, an attitude deviation value is obtained, and the vehicle state of the vehicle is matched from a stability degree table according to the attitude deviation value; the air suspension system collects suspension height signals of all wheels of the vehicle, when the brake-by-wire system judges that the state of the vehicle is an unstable state, the suspension height signals of all the wheels are adjusted according to adjusting rules, and height adjusting signals corresponding to all the wheels are obtained; the air suspension system adjusts the height of the air spring of the corresponding wheel according to the plurality of height adjustment signals. The vehicle is jointly controlled through the brake-by-wire system and the air suspension system, the height of an air spring of the vehicle is adjusted, the vehicle is prevented from rolling over due to the unstable gravity center, and the safety of the vehicle is improved.

The invention discloses an automobile drifting control method based on a brake-by-wire system. The automobile drifting control method comprises the following steps: S1, enabling an automobile to be in a drifting mode starting state; s2, judging whether a drift mode is triggered or not; s3, the braking torque for braking the rear axle of the automobile is calculated, and the rear axle of the automobile is braked to enable the automobile to drift; the brake torque is obtained by adding the feedforward brake torque, the yaw velocity feedback brake torque and the wheel speed feedback brake torque; the feedforward braking torque is calculated according to the load of the wheel, the road adhesion coefficient and the rolling radius of the wheel; the yaw velocity feedback braking torque is calculated according to a drift yaw velocity target, the wheel speed feedback braking torque is calculated according to a rear wheel speed target, and the drift yaw velocity target and the rear wheel speed target are both obtained according to a steering wheel angle and the change rate of the steering wheel angle; and S4, judging whether the automobile exits the drifting state or not in the drifting driving process of the automobile. By means of the control method, the drifting state of the automobile is more stable, control is easier, and safety is high.

The invention provides a hydraulic integrated brake-by-wire system, and belongs to the field of automobile brake systems, the hydraulic integrated brake-by-wire system comprises a main cylinder, a first piston, a second piston, a first oil can, a second oil can and an energy accumulator, the first piston and the second piston divide an inner cavity of the main cylinder into a first cavity, a second cavity and a third cavity, and the end, away from the main cylinder, of the first piston is connected with a pedal; a first loop and a second loop are connected between the second cavity and the wheel cylinder set, a third loop is connected between the first cavity and the wheel cylinder set, an oil pump is connected to the first loop in series, the energy accumulator is located between the oil pump and the second cavity, the first oil can is communicated with the first cavity through a pipeline, and the second oil can is communicated with the second cavity and the wheel cylinder set through pipelines. And the first oil pot and the second oil pot are mutually independent. The problem that an existing electronic hydraulic braking system is limited in redundancy capacity is solved. The method has the technical effects that reliable voltage buildup with higher power and higher braking response speed are realized, and the braking effect of redundant braking is ensured while braking decoupling is realized.

The invention discloses a clamping force control method for an electronic mechanical braking system, and belongs to the technical field of automobile brake-by-wire. The method comprises the following steps: step 1, establishing a mechanical model of the electronic mechanical braking system; step 2, based on the mechanical model, designing a high-order linear extended state observer HLESO for estimating total disturbance and uncertain items of the system; 3, the total disturbance of the system observed by the HLESO serves as a feedforward control item, and a fast terminal sliding mode controller FTSM is designed; 4, designing a fuzzy corrector to carry out smooth transition on the discontinuous characteristics of the switch control items of the FTSM; and 5, when the vehicle enters a braking state, braking is achieved through the HLESO-FTSM control strategies in the steps 3-4. According to the invention, the long-term stability of the EMB system under complex working conditions is improved, the control process is simplified, and the control bandwidth and response speed of the system are greatly improved.

The invention discloses an electro-hydraulic brake-by-wire system based on a CPS architecture and an energy optimization method. The method comprises the following steps: acquiring driver input data of a vehicle and working condition data of vehicle driving; performing data processing on the driver input data and the vehicle driving working condition data; working condition prediction is carried out according to the processed data, and a rolling time domain driving working condition prediction result is obtained; according to the obtained working condition prediction result, an electro-hydraulic composite braking overall objective function is solved, and an optimal braking strategy is obtained; and vehicle braking is conducted according to the optimal braking strategy, and braking system energy optimization is completed. Braking is conducted according to the current vehicle state in combination with working condition prediction, the energy optimization strategy is perfected, reasonable braking torque distribution is achieved, energy consumption of the electro-hydraulic composite braking system is further reduced, and energy conservation and emission reduction of the whole life cycle of the vehicle are achieved.

The invention relates to a universal full-decoupling electric control brake assisting system and method, and belongs to the technical field of vehicle brake systems. Comprising a simulation cylinder first piston component, a simulation cylinder second piston component, a valve block, a simulation cylinder, a simulator piston, a simulator load, a pressure cylinder, a pressure cylinder second piston component, a pressure cylinder first piston component, a transmission mechanism, an angle sensor, a motor, a controller, a first flow channel, a second flow channel and a third flow channel. The system has the advantages that by collecting signals of the displacement sensor and the hydraulic sensor, rotation of the motor component is controlled by a program to drive the pressure cylinder assembly to build pressure, and the control system forms boosting pressure braking. A motor is used for directly pushing a pressure cylinder piston, and the pressure cylinder piston pushes brake fluid to form brake pressure. The system is characterized in that drive-by-wire brake is adopted, logic intercommunication with downstream ESC / ABS is achieved, functional applications such as active collision avoidance, self-adaptive cruise and intelligent driving can be achieved, and the system is the trend of future service brake system development.

The invention relates to the technical field of automobile braking, in particular to a multi-objective optimization method and system for a brake-by-wire system based on digital twinning, and the method comprises the steps: building a virtual platform which comprises a brake-by-wire system physical model and a digital twinning model, and enabling the virtual platform to integrate a calculation model, simulation data and a physical entity on the same platform; constructing a virtual-real interaction interface on the virtual platform to realize real-time interaction between physical model data and digital twin model data; performing multi-target optimization on the brake-by-wire system based on a depth deterministic strategy gradient algorithm, and coordinating friction braking and motor braking force distribution on the premise of ensuring braking safety according to the driving intention of a driver; a physical engine is adopted to simulate pressure fluctuation of a hydraulic pipeline in real time, the brake energy recovery amount and system response characteristics are optimized under the ABS activation working condition, a depth deterministic strategy gradient algorithm is adopted to perform multi-target optimization on a brake-by-wire system, and multiple targets such as energy recovery efficiency can be better balanced.

The utility model discloses an electronic pedal structure for brake-by-wire, which comprises a pedal support and a pedal arm rotationally connected to the pedal support through a pedal shaft, and further comprises a pedal simulator arranged below the pedal arm, the pedal simulator is provided with a central axis, and the pedal simulator can stretch out and draw back in the extending direction of the central axis. The two ends of the pedal simulator in the telescopic direction are flexibly connected with the pedal arm and the pedal support respectively, the pedal support is provided with a mounting face, the included angle between the mounting face and the central axis ranges from 80 degrees to 100 degrees, and projections of the pedal shaft and the pedal simulator on the plane where the mounting face is located are staggered. The height of the pedal support in the electronic pedal structure is small, so that the structural size of the pedal support is small; in addition, the electronic pedal structure and an original hydraulic brake pedal can be installed on an automobile in a replaceable mode, and therefore the transition requirement of the hydraulic pedal and the electronic pedal is met in stages.

The invention relates to the field of vehicle control methods, in particular to a brake-by-wire system and a dragging torque maneuvering control method thereof. The method includes the following steps that firstly, the opening degree of an accelerator pedal is obtained; 2, analyzing a driving intention according to the opening degree of the accelerator pedal; and 3, through the recognized driving intention, the brake-by-wire system sends a corresponding dragging torque control instruction, and the dragging torque control instruction drives a friction plate to change the distance between the friction plate and a brake disc. According to the method, the opening degree of the accelerator pedal and the change rate of the opening degree are detected, the driving intention of a driver is judged through an algorithm, then the distance between the friction plate and the brake disc is autonomously adjusted, the dragging torque is reduced or increased, and preparation is made for subsequent braking or acceleration.

The invention discloses a brake-by-wire system assembly pedal displacement sensor calibration device and method, and the device comprises a main body support and a screw rod lifting platform, the main body support is used for fixing a brake-by-wire system assembly, the screw rod lifting platform is provided with a push block assembly, and the screw rod lifting platform is used for driving the push block assembly to move. The push block assembly is used for measuring the brake-by-wire system assembly. According to the calibration device and method for the brake-by-wire system assembly pedal displacement sensor, through cooperation of the main body support and the lead screw lifting platform, the position of the pushing block assembly is conveniently adjusted to calibrate the brake-by-wire system assembly pedal displacement sensor, the calibration device and method are suitable for different brake-by-wire system assemblies, compatibility is high, and the calibration precision is high. The detection efficiency is high, and the high precision of calibration is ensured.

The invention relates to the technical field of vehicle safety, and discloses a tire burst active braking method and system, a vehicle and a storage medium. And under the condition that the vehicle tire burst early-warning signal is received, pressure pre-building is conducted based on the brake-by-wire system, so that the vehicle brake pressure is generated in advance. Then, under the condition that the vehicle tire burst signal is received, the vehicle is braked based on the brake pressure through the brake-by-wire system, and compared with a method that under the condition that the vehicle tire burst signal is received, pressure building is carried out based on the brake-by-wire system, and then the vehicle is braked, the braking efficiency is improved; according to the pre-pressure-building method, the pressure building time under the condition that the vehicle tire burst signal is received is shortened, the transmission time is optimized, the brake control effect can be improved, the stability of vehicle control under the tire burst condition is improved, and the life and property safety of personnel on the vehicle under the tire burst working condition is guaranteed.

The invention relates to the technical field of vehicle control, and discloses a steering-braking cooperative control method, system and equipment during brake-by-wire failure, and the method comprises the steps that running state information of a vehicle is acquired; on the basis of the running state information, whether electronic mechanical brake wheels fail or not is judged; if yes, the braking force deviation of the failed wheel is determined according to the running state information; yawing moment deviation is generated according to the braking force deviation; generating a feed-forward compensation rotation angle based on the yawing moment deviation; determining a feedback compensation rotation angle according to the operation state information; and generating a steering compensation angle for steer-by-wire based on the feedforward compensation rotation angle and the feedback compensation rotation angle. The control system has the beneficial effect that the safety performance and the control reliability of the whole vehicle are improved.

This application describes examples of a brake-by-wire system and a control method. In one example, a braking control system includes a brake master cylinder, a first pressure booster, a second pressure booster, at least one first interface, at least one first control valve, at least one second control valve, at least one third control valve, at least one fourth control valve, and a second pedal feel simulation system. The at least one first interface is connected to at least one brake wheel cylinder, respectively. The brake master cylinder and the at least one first interface are respectively connected through the at least one first control valve. The first pressure booster and the at least one first interface are respectively connected through the at least one first control valve. The second pressure booster and the at least one first interface are respectively connected through the at least one third control valve.

The invention discloses a layered vehicle stability brake control system and a brake control method. A layered vehicle stability braking control system is applied to a vehicle provided with a brake-by-wire system and a steering-by-wire system and comprises a chassis dynamics analysis module and a yawing moment instruction distribution module. The invention discloses a layered vehicle stability braking control method. The braking control step sequentially comprises the steps of determining the corrected yaw moment of a target vehicle, evaluating the availability and the permissibility of active steering control, determining a wheel steering control angle based on the availability and the permissibility of the active steering control, determining the steering corrected yaw moment based on the wheel steering control angle, and conducting braking control. Determining a residual corrected yaw moment based on the target vehicle corrected yaw moment and the steering corrected yaw moment, and determining a brake control instruction based on the residual corrected yaw moment; according to the method, the optimal distribution of the target correction yaw moment can be realized through the synergistic effect of active steering and brake-by-wire.

The invention discloses a brake-by-wire redundancy control method and system based on big data, and the method comprises the steps: obtaining historical fault data of a brake-by-wire system, carrying out the preprocessing of the historical fault data into standard fault data, carrying out the clustering analysis, extracting the position of a fault part, and determining a weak position set of the system; constructing an initial fault propagation matrix according to the weak position set, and calculating the system failure contribution degree of each fault component to update the matrix; using Monte Carlo simulation to form a failure probability data set based on the updated matrix; generating a plurality of candidate switching paths for the scene with the failure probability higher than a preset threshold value, and simulating the candidate switching paths through digital twin simulation to obtain actual switching time delay and success probability; and calculating the comprehensive performance score of each path according to the simulation result, sorting according to the scores, and selecting the path with the highest score for switching control when the running load state of the fault component exceeds a preset threshold value. According to the invention, the redundancy control switching efficiency of the drive-by-wire system under a complex working condition is improved.

The invention discloses a clamping force estimation method for a data and model dual-driven electronic mechanical braking system, and relates to the technical field of intelligent vehicle brake-by-wire. The method comprises the following steps: establishing electronic mechanical braking system models and state observers thereof under different precisions; designing a clamping force estimator of the model-driven electronic mechanical braking system by combining an extended Kalman filtering method; after the input features are screened, designing a clamping force estimator of the data-driven electronic mechanical braking system in combination with a time sequence convolutional neural network; estimating values of the model driving estimator and the data driving estimator are fused in real time based on an adaptive weight fusion mechanism, and finally an estimation result with higher precision and higher robustness is obtained. According to the method, the interpretability and real-time advantages of a model driving method and the adaptive capacity of a data driving method to complex non-linear working conditions are fused, and the precision and robustness of clamping force estimation under multiple working conditions and noise interference are effectively improved under the condition that a force sensor is not needed.

The invention discloses a brake-by-wire method and a brake system in dual modes, and belongs to the field of automobile braking, the brake-by-wire method and the brake system in dual modes comprise a pedal assembly, a vehicle control unit electrically connected with the pedal assembly and a brake-by-wire module electrically connected with the vehicle control unit, and the brake-by-wire module adopts a redundant structure. The brake-by-wire module comprises a main line control brake unit and a redundant brake-by-wire unit, and the main line control brake unit and the redundant brake-by-wire unit are connected with the brake calipers through brake connectors. By the adoption of the brake-by-wire method and the brake system under the double modes, the reliability, the safety and the response accuracy of the brake-by-wire system are remarkably improved through redundant acquisition of the brake intention by the double sensors, backup of the double brake-by-wire units and intelligent switching of the flow channels by the brake connector, stable and efficient operation of the brake function under the complex working condition is ensured, and the brake efficiency is improved. Therefore, the method is suitable for a normal driving mode and an automatic driving mode.

This specification discloses a hydraulic brake circuit fault diagnosis method based on the OneBox wire control brake system, including four parts: electric cylinder circuit fault diagnosis, master cylinder and simulator brake circuit fault diagnosis, PSV fault diagnosis, and CSV fault diagnosis. The embodiment of this specification detects brake system circuit faults through four diagnostic processes, uses pressure sensors and electric cylinder units to achieve pressure detection and pressure increase and decrease control, realizes pressure building function diagnosis, valve, hydraulic cylinder, wheel cylinder leakage performance diagnosis; valve, electric power unit jam fault diagnosis, can quickly and comprehensively detect the boost isolation valve, master cylinder isolation valve, simulation valve, pedal simulator, isolation valve and wheel cylinder with high accuracy.

The invention relates to the technical field of vehicle control, and discloses a brake-by-wire calibration method, device and equipment, and the method comprises the steps: obtaining the total mass of a vehicle, brake pedal travel data, vehicle speed data and brake pressure data; performing difference calculation according to the vehicle speed data to obtain a wheel speed difference; in combination with a braking distribution coefficient model, performing braking distribution calculation according to the total vehicle mass, the vehicle speed data and the wheel speed difference to obtain a braking distribution coefficient; according to the total mass of the vehicle, the brake pressure data and the brake distribution coefficient, brake torque calculation is conducted, and a brake torque compensation value is obtained; according to the total mass of the vehicle and the brake pressure data, brake force correction calculation is conducted, and a brake force correction value is obtained; according to the brake torque compensation value, the brake force correction value and the brake pedal travel data, PID closed-loop system control calculation is conducted, and a motor torque output value is obtained. According to the method, the braking force and the output torque can be accurately calculated, so that the reliability and the stability of braking are ensured.

The invention discloses a vehicle brake lamp control method, device and equipment and a storage medium. The method comprises the steps that whether a main controller and an auxiliary controller of a brake lamp of a current vehicle break down or not is judged; when the main controller and the auxiliary controller do not fail, acquiring a brake-by-wire pedal state signal, a pedal travel state signal and a brake lamp switch signal, and performing handshake judgment on the main controller and the auxiliary controller according to the brake-by-wire pedal state signal, the pedal travel state signal and the brake lamp switch signal; after the handshake passes, a first brake lamp in the brake lamps is controlled to be lightened through the main controller, and a second brake lamp in the brake lamps is controlled to be lightened through the auxiliary controller; the brake state of the vehicle can be accurately identified, the complexity of brake lamp control is avoided, the control cost is reduced, the driving safety is improved, and the control accuracy of the brake lamp of the vehicle is improved.

The invention relates to a vehicle braking control method and device, a vehicle and a storage medium, and the method comprises the steps that a braking control signal of the vehicle is received; in response to the braking control signal, whether the vehicle meets a preset comfortable braking condition or not is judged according to the braking parameters and the current driving parameters of the vehicle; if the vehicle meets the preset comfortable braking condition, the distance between the vehicle and the braking obstacle is obtained, the pressure relief slope of the braking hydraulic pressure of the vehicle is determined based on the distance, and the pressure relief speed of the wheel end braking pressure of the vehicle is determined based on the pressure relief slope so as to control a brake-by-wire system of the vehicle to conduct braking. Therefore, the technical problems that in the related technology, the comfortable braking function of the vehicle is difficult to intelligently adjust according to the actual scene, safety and comfort are difficult to balance, and the driving requirements of a user cannot be considered are solved.

The invention discloses an electro-hydraulic drive-by-wire redundancy braking control system for controlling the braking stability of a manned and unmanned selectable tracked vehicle. The system comprises an oil supply system, independent drive-by-wire brake valve sets on the two sides, a drive-by-wire brake change-over switch valve, a mechanical hydraulic brake valve, a shuttle valve, a brake cylinder and a brake pipeline. The independent drive-by-wire brake valve sets on the two sides are connected with a left brake cylinder and a right brake cylinder respectively and used for achieving decoupling line control of left brake force and right brake force, and therefore the requirement for brake stability control is met. Meanwhile, a mechanical hydraulic brake loop is reserved in the system as redundancy, and when the drive-by-wire system breaks down, the mechanical hydraulic brake valve can output brake pressure through the shuttle valve to achieve reliable braking; through the design, the electro-hydraulic drive-by-wire redundant braking system realizes drive-by-wire decoupling of left and right braking force of the tracked vehicle and braking stability control, and ensures the braking reliability under a fault condition, so that the driving safety of the tracked vehicle is greatly improved.

The invention relates to the field of brake-by-wire systems, and discloses a control method and system for an automobile brake-by-wire system, and the method comprises the steps: collecting motor operation parameters, environment state parameters and vehicle dynamics parameters; based on the environment state parameters and a pre-calibrated environment compensation parameter table, environment compensation is carried out on the motor current signal and the rotation angle signal; carrying out load correction on the motor current signal and the rotation angle signal which are subjected to environment compensation; identifying a current key characteristic time period and a corner key characteristic time period respectively; generating a system reliability verification coefficient based on cross validation of the current key characteristic time period and the corner key characteristic time period; calculating an actual clearance value between a friction plate and a brake disc based on a system reliability verification coefficient, the corner signal after load correction and a pre-calibrated mechanical transmission parameter; and outputting a brake system control instruction based on the calculated actual gap value.

A brake control method, system and device and a computer readable storage medium relate to the technical field of electromechanical brake-by-wire, and specifically comprise: acquiring a road surface type corresponding to a road surface where a target vehicle is currently located, and a first optimal slip rate and a second optimal slip rate corresponding to different moments of the target vehicle, the first optimal slip rate is obtained based on an electronic mechanical brake-by-wire system, and the second optimal slip rate is obtained based on an intelligent driving assistance system; when it is determined that the road surface type is credible according to the first optimal slip rate and the second optimal slip rate, target braking force is determined based on the first optimal slip rate; and brake control is conducted based on the target brake force. The problems that in the first cycle of the function of the anti-lock braking system, braking is conducted only by stepping on the pedal, so that braking force is too large, and the wheel speed is reduced or increased greatly are solved.