138 results about "Brake wear" patented technology

The invention relates to the technical field of automobile active safety, in particular to an intelligent brake pad abrasion measuring method and system based on multi-sensor fusion, and the method comprises the steps that S1, multi-source sensing signals are synchronously collected, and wheel speed pulse signals and brake pressure signals from a vehicle CAN bus are received; s2, multi-modal signal feature extraction: carrying out time domain filtering processing on the original thickness signal to form a thickness change feature vector, carrying out space partition calculation on the temperature distribution signal to form a temperature gradient feature matrix, and carrying out wavelet packet decomposition on the braking vibration signal to form a frequency domain energy feature set; s3, dynamically fusing decisions, outputting a joint feature vector, and generating a wear loss estimated value and a confidence index; and S4, performing Kalman filtering correction on the wear loss estimated value according to the confidence index to form final wear thickness data. According to the brake pad wear intelligent measurement method and system based on multi-sensor fusion, the problem that brake pad wear cannot be accurately monitored and intelligently diagnosed online in real time can be solved.

The invention discloses a motor electric control brake system clamping force self-adaptive correction method based on deep learning, and belongs to the technical field of chassis control, the method fully considers the wear condition of a brake pad in the use process, introduces a deep learning neural network optimization control strategy for the nonlinear change problem caused by the wear of the brake pad, and corrects the clamping force of the motor electric control brake system. The complex nonlinear relation between the clamping force estimated by the rotation angle of the motor and the actual clamping force is modeled as predictable probability distribution, and self-adaptive correction is performed, so that the clamping force control is optimized under the brake pad abrasion condition, the dynamic change caused by the brake pad abrasion is effectively dealt with, the real-time performance of system control is enhanced, and the system reliability is improved. The prediction precision and the response speed of the system are greatly improved, the stability, the reliability and the safety of the brake system are comprehensively enhanced, and meanwhile, the situation that a large number of sensors are adopted for real-time clamping force monitoring is avoided.

The invention discloses a vehicle brake pad wear degree prediction method and device based on working condition recognition, belongs to the field of brake pad wear degree prediction, and aims at solving the problems that in an existing vehicle brake system, brake pad friction prediction accuracy and robustness are poor; and wear prediction and brake system performance optimization cannot be efficiently and economically completed. The method comprises the following steps: carrying out clustering selection under difference maximization on a vehicle speed sequence of a vehicle to obtain a typical working condition; performing wavelet transform processing on the original vehicle speed sequences under different working conditions to obtain vehicle speed signals after reconstruction and noise reduction; carrying out matrix conversion related to a Gramer angle field on a plurality of subsequences in the vehicle speed signal under the typical working condition to obtain a two-dimensional image; extracting and calculating the spatial features and the time features in the two-dimensional image by using a hybrid neural network model to obtain a predicted value of the abrasion loss of the brake pad in the vehicle braking system at the current moment; and brake gain adjustment is conducted on a vehicle brake system, and the final brake torque is obtained.

The invention relates to the technical field of motor vehicle non-tail-gas particulate matter emission testing, in particular to a brake abrasion particulate matter collecting device and method.The brake abrasion particulate matter collecting device comprises a brake assembly, a collecting assembly and a controller, a collecting groove is formed in the braking end of the brake assembly, a collecting channel is formed in brake calipers, and the collecting channel communicates with the collecting groove; the collecting assembly comprises a fan and a particulate matter collector, one end of the particulate matter collector is connected to the air outlet end of the fan, the other end of the particulate matter collector communicates with the collecting channel through a pipeline, and a heating piece is arranged in the particulate matter collector; and the controller is electrically connected with the fan and the heating piece. When an automobile brakes, particles generated by abrasion of a brake pad enter the particle collector through the collecting groove, the collecting channel and the pipeline under the counterclockwise driving of a brake disc and the influence of gravity, so that the particles are gathered and collected as much as possible, and when the particles in the particle collector are accumulated to a certain degree, the controller controls the heating piece to heat, so that the particles are collected. And the particles are combusted and are prevented from overflowing.

The utility model provides an automobile brake pad wear detection device. The brake disc, the shell, the two push-out assemblies and the two brake pads are installed on a vehicle, a hydraulic induction mechanism is fixedly installed on the outer wall of one side of the shell, and the hydraulic induction mechanism comprises a storage box, a hydraulic pipe, a sealing push block, a U-shaped rod, a supporting block, an installation box, a plurality of delay induction switches and a trigger switch; the storage box is fixedly installed on the outer wall of one side of the shell, and the hydraulic pipe is fixedly installed on the inner wall of one side of the storage box. According to the automobile brake pad wear detection device provided by the utility model, the hydraulic sensing mechanism is arranged, the switch is driven to trigger through the change of the oil quantity in the device, the device is not easily interfered by external factors, the stability is strong, the detection accuracy is improved through the time-delay sensing switch, and the controller is arranged to control the detection precision. And information of a plurality of brake pads can be collected, summarized and transmitted.

The invention relates to the technical field of brake wear analysis, in particular to a service life prediction method and system for a brake disc. The method comprises the following steps: firstly, acquiring a real-time road condition difference degree according to a difference condition between pedal moving speeds corresponding to a current time period and a historical time period; integrating the braking habit influence coefficient and the braking habit wear coefficient to obtain an overall habit influence index; according to the pedal moving distance sequence of the reference time period, obtaining an autocorrelation coefficient; correcting the autocorrelation coefficient according to the overall habit influence index to obtain a corrected autocorrelation coefficient; and predicting the service life of the brake disc according to the pedal moving distance sequence of the reference time period and the corrected autocorrelation coefficient. The method fully considers the influence of the real-time driving habit on the wear of the brake disc, reasonably sets the corrected autocorrelation coefficient, and improves the prediction accuracy of the service life of the brake disc.

The invention provides a method and device for estimating the abrasion degree of a vehicle brake pad and a medium, and belongs to the technical field of vehicles. The method comprises the steps that braking parameters are obtained, and the current remaining thickness of each wheel brake pad is estimated according to the braking parameters; and according to the current residual thickness of each wheel brake pad, the braking force distribution proportion and the braking duration of each wheel brake pad are dynamically adjusted, and whether the current residual thickness smaller than the set replacement threshold exists or not is judged. And when the current remaining thickness of the wheel brake pad is smaller than the set replacement threshold value, a warning mark corresponding to the wheel brake pad is generated. The brake pad abrasion loss is accurately calculated in real time, a user is reminded of the brake pad abrasion condition in time, the service life of a brake system is prolonged, and safety of the brake system is improved.

To provide a brake caliper capable of coping with wear of a brake pad.SOLUTION: By having the sleeve member 65 and the bolt member 68 in threaded engagement with each other and adapted to be actuated by the brake lever means 6 to move the first brake pad 41 towards the brake rotor, wherein the bolt member 68 is adapted to rotate and move relative to the sleeve member 65 when the first brake pad 41 is moved by the piston means actuated by the brake pedal, the travel distance required for the bolt member 68 driven by the brake lever means 6 to perform its braking function remains substantially the same even if the amount of wear on the brake pads increases.SELECTED DRAWING: Figure 4

Method for forming a decorative insert (110, 112) on a brake pad wear surface (106, 406) of a brake disc (100, 400), the method comprising: Positioning an insert material in a mold; Casting a brake disc (100, 400) in the mold around the insert material; and Machining the brake disc (100, 400) by cutting, grinding, sandblasting, scraping or polishing so that at least part of the insert material is visible on the brake pad wear surface (106, 406), wherein the thickness of the decorative insert (110, 112) is 0.5 to 3.0 millimeters, and wherein: a coefficient of friction between the decorative insert (110, 112) and a brake pad is the same as a coefficient of friction between the brake pad wear surface (106, 406) and the brake pad; and a wear rate of the decorative insert (110, 112) is equal to or greater than a wear rate of the brake pad wear surface (106, 406).

The brake pad of the automobile brake system comprises a plurality of storage holes formed in the brake pad, the storage holes are vertically formed from the surface, close to a brake disc, of the brake pad to the interior of the brake pad, and each storage hole sequentially comprises a circular truncated cone storage part, a cylindrical storage part and a conical storage part which are communicated with one another; the upper bottom surface of the circular truncated cone storage part is arranged on the surface, close to the brake disc, of the brake pad, and the two ends of the cylindrical storage part are communicated with the lower bottom surface of the circular truncated cone storage part and the bottom surface of the conical storage part respectively. The storage hole structure formed by compounding the circular truncated cone storage part, the cylindrical storage part and the conical storage part is arranged on the surface of the brake pad, so that the trapping and coagulation efficiency of brake wear particles is effectively improved, and the emission level of micron-scale and nano-scale particles is remarkably reduced; the particle containing and heat management performance of a friction interface in different braking stages is improved, and meanwhile the abrasion resistance and braking stability of the surface of the brake pad are enhanced.

The utility model relates to the technical field of AGV robots, in particular to an AGV intelligent dispatching robot which comprises a vehicle body, wheels and a moving plate are arranged on the vehicle body, a track used for movement of the vehicle body is arranged at the bottom of the vehicle body, and a connecting rod is fixedly installed in the vehicle body. A brake assembly used for braking the wheels is arranged on the connecting rod and comprises a movable ring arranged on the connecting rod. By arranging the brake assembly, when the AGV is braked, the motor can enable the moving plate to move downwards to enable the blocking block at the bottom to be gradually attached to the ground of the track through the long plate, and the moving ring is made to push the moving frame through the connecting plate to push the blocking block to be gradually close to the side face of the track. Therefore, in the process of approaching the side face, the push block is matched with the check block to enable the blocking block to be attached to the wheel to limit and block the wheel, then the wheel is braked, the brake pad is used in cooperation with a traditional brake pad, the braking effect is enhanced, abrasion of the brake pad is reduced, and the service life of the mechanical brake pad is prolonged.

The present disclosure relates to a kind of vehicle anti-lock braking control method, device, electronic equipment and vehicle, relate to vehicle control technical field.Therein, method includes: in response to triggered anti-lock braking signal, control vehicle enters anti-lock braking state;In anti-lock braking state, motor brake system and hydraulic brake system are braked to vehicle jointly;The braking condition data of vehicle is acquired;Based on braking condition data, only adjust the hydraulic brake parameter when hydraulic brake system is braked to vehicle.This embodiment of the present disclosure can reduce the working noise and mechanical vibration under ABS condition, reduce brake wear, improve the service life of brake system.

The utility model discloses a rail wheel wear resistance detection device, and specifically relates to the wheel wear resistance detection tool technology field, the rail wheel wear resistance detection device comprises a detection box, the top surface of the detection box is symmetrically provided with a plurality of slide rails, the plurality of slide rails are internally connected with a slide plate in a sliding manner, the outer side of each slide rail is provided with a through groove, and the through groove is provided with a through hole. According to the utility model, when in use, the operation is simple, the relative rotation wear detection between the wheel and the track body and the brake wear detection between the wheel and the track body can be selected as required, the detection efficiency is improved, and the detection cost is reduced. Meanwhile, during brake wear detection, the initial speed of the wheel body can be endowed, the laying length of the track body is reduced, the relative rotation wear of the wheel body and the track body is reduced, and brake wear detection is more accurate.

The invention relates to a vehicle, in particular an electric vehicle, comprising an electric powertrain and at least one energy storage unit (preferably electric), comprising a single-pedal drive system, comprising at least one vehicle throttle controller for controlling throttle power and at least a portion of brake power of the vehicle, at least one brake system for controlling the accelerator power and at least a portion of the brake power of the vehicle, a system for providing braking power to a vehicle, where the braking power is based at least in part on a braking power demand signal, where the braking power demand signal is determined based on an integral of at least one measured variable of a vehicle throttle controller. The invention also relates to a method for a single throttle drive of a vehicle and a regenerative braking system to achieve an extended range by minimizing energy consumption, minimizing tire wear, minimizing brake wear, minimizing tire particle emissions, minimizing brake particle emissions, or any combination thereof.

A dynamic braking system for an electrified vehicle having a high voltage (HV) battery system and an electric propulsion system includes a regenerative braking system configured to recharge the HV battery system, a vehicle controller configured to monitor and control the regenerative braking system to selectively perform a regenerative braking operation, and a vehicle brake actuator configured to selectively actuate one or more vehicle friction brakes. A brake controller is in signal communication with the vehicle brake actuator and configured for signal communication with a trailer brake actuator to selectively actuate trailer friction brakes. The brake controller is programmed to receive a driver braking request, receive a signal indicating a regenerative braking capacity of the electric propulsion system, and based on the driver braking request and the regenerative braking capacity, automatically adjust a trailer brake gain to (i) maximize energy recovery via regenerative braking and (ii) reduce brake wear.

The invention provides a brake abrasion monitoring method and device, equipment, a storage medium and a product, and the method comprises the steps that current abrasion data of a vehicle are collected and obtained, and the current abrasion data of the vehicle comprise the current thickness of each friction plate, the current temperature of a brake disc, the current brake pressure and the current rotating speed of each wheel; inputting the current wear data of the vehicle and pre-stored historical wear data into the residual life prediction model to obtain the residual life prediction value and wear rate of each friction plate output by the residual life prediction model; wherein the residual life prediction model is constructed on the basis of a neural network and is obtained through pre-training on the basis of a training set, the training set comprises multiple pieces of training data, and each piece of training data comprises historical wear data of the vehicle, the residual life reference value of each friction plate and the wear rate reference value of each friction plate. According to the scheme, the accuracy and reliability of brake wear monitoring are improved.

The application discloses a motor electric control brake system clamping force self-adaptive correction method based on deep learning, belongs to the chassis control technical field, and fully considers the brake pad wear condition in the use process. In view of the nonlinear change problem caused by the brake pad wear, a deep learning neural network optimization control strategy is introduced, a complex nonlinear relationship between the estimated clamping force of the motor rotation angle and the actual clamping force is modeled as a predictable probability distribution, and self-adaptive correction is carried out, so that the clamping force control is optimized under the condition of brake pad wear, the dynamic change caused by the brake pad wear is effectively coped with, the real-time performance of system control is enhanced, the prediction accuracy and response speed of the system are greatly improved, the stability, reliability and safety of the brake system are comprehensively enhanced, and meanwhile, real-time clamping force monitoring by using a large number of sensors is avoided.

The utility model discloses a brake shoe block with a noise elimination mechanism, which comprises a brake shoe, two sides of the brake shoe are respectively welded and fixed with a silencing shell, the inner wall of each silencing shell is fixedly connected with a fixed separation net, the inner side of each fixed separation net is provided with sound-absorbing cotton, the inner wall of each sound-absorbing cotton is provided with a sound insulation plate, and the inner wall of each sound insulation plate is provided with a noise elimination mechanism. The other side of the fixed partition net is divided into a silencing cavity, a plurality of first sound absorption holes are formed in the front wall and the rear wall of the silencing shell, a plurality of second sound absorption holes are formed in the outer side wall of the silencing shell, and detachable brake pads are installed on the outer side wall of the silencing shell. Noise is sucked into the noise reduction cavity through the first sound absorption holes and the second sound absorption holes, sound energy rebounds repeatedly in the cavity and is converted into heat energy to be consumed, and the noise is further absorbed and isolated through the sound absorption cotton and the sound insulation plate. Due to the fact that the silencing shell and the brake pad are independently arranged, the brake pad can be independently disassembled and replaced after being greatly abraded, the disassembly and assembly efficiency is improved, the replacement cost is low, and potential safety hazards are reduced.

The utility model provides a hydraulically actuated single-cylinder brake, which comprises a brake shoe assembly, a brake bottom plate assembly, an expander assembly and a single-cavity brake cylinder which are connected in sequence, the expander assembly comprises an expander, an adjusting screw rod of the expander is connected with a web plate of the brake shoe assembly, the single-cavity brake cylinder comprises a single-cavity cylinder body, and the single-cavity cylinder body is connected with the brake bottom plate assembly. A single-cavity piston moving in the axial direction of the single-cavity cylinder body is arranged in the single-cavity cylinder body, a guide ring and a sealing ring are arranged on the circumferential side of the single-cavity piston at intervals, an exhaust hole and an oil inlet are formed in the bottom of the single-cavity cylinder body, and an exhaust nozzle is arranged in the exhaust hole. The defects that in the prior art, an air pressure brake cannot meet the requirement for long-time service braking, and meanwhile the dragging and abrasion risk of the brake exists can be overcome.

A dynamic braking system for an electrified vehicle having a high voltage (HV) battery system and an electric propulsion system includes a regenerative braking system configured to recharge the HV battery system, a vehicle controller configured to monitor and control the regenerative braking system to selectively perform a regenerative braking operation, and a vehicle brake actuator configured to selectively actuate one or more vehicle friction brakes. A brake controller is in signal communication with the vehicle brake actuator and configured for signal communication with a trailer brake actuator to selectively actuate trailer friction brakes. The brake controller is programmed to receive a driver braking request, receive a signal indicating a regenerative braking capacity of the electric propulsion system, and based on the driver braking request and the regenerative braking capacity, automatically adjust a trailer brake gain to (i) maximize energy recovery via regenerative braking and (ii) reduce brake wear.

The utility model relates to the technical field of brake pad wear detection, in particular to a brake pad wear detection device. According to the technical scheme, the device comprises a fixed-width plate and an adjusting plate, the fixed-width plate and the adjusting plate are hinged to each other, a fixed-width hole is formed in the fixed-width plate, an adjusting hole is formed in the adjusting plate, a fixed plate is fixed to the side wall of the adjusting hole, and a movable plate is installed on the side, away from the fixed plate, of the adjusting plate; an adjusting assembly for driving the movable plate to stretch out and draw back is arranged on the side wall of the adjusting hole, and a fixing assembly is arranged between the width fixing plate and the adjusting plate. According to the utility model, the brake pad passes through the specified detection hole, the purpose of rapid detection is realized, width measurement is not needed, the working efficiency can be greatly improved in the batch detection process, and the detection holes with different widths are arranged at the same time, so that different brake pads can be detected.

Service device (1) with a communication interface (13) configured to receive operating data of a vehicle (3) provided by the vehicle, wherein the operating data includes several sensor measurement data from sensors assigned to the vehicle (3), an engine wear parameter, a brake wear parameter, a current position of the vehicle, a destination of the vehicle, a radio station setting, personalization data, and with an evaluation unit (15) configured to determine a vehicle user profile parameter based on the operating data of the vehicle (3) and with a provision unit (17) configured to select specified information based on the respective vehicle user profile parameter and to make it available at the communication interface (13) for transmission to the vehicle (3).

The invention relates to the technical field of vehicle testing, in particular to a whole vehicle braking wear particulate matter testing system under laboratory conditions. The system comprises a chassis dynamometer, a vehicle head fan, a tested vehicle, a connection system, a collection system, a test system and a verification system. The chassis dynamometer is used for providing various resistances in the normal driving process of the automobile; the automobile head fan provides cooling airflow in the automobile driving process; in the running process of the tested vehicle, braking wear particles are generated by a braking system; the connecting system connects the tested vehicle with the collecting system; the collecting system is used for capturing brake wear particles generated by the brake assembly; the test system is used for acquiring emission characteristics of brake wear particles of the tested vehicle; and the verification system is used for obtaining the test efficiency of the brake wear particles in the test scheme and correcting a final result.

The application belongs to the technical field of brake, and particularly relates to a low-pressure large-torque parking brake, which comprises a second back plate, a first driving assembly, a second driving assembly, a friction assembly and an adjusting assembly. The second back plate is used for providing a mounting position. The first driving assembly and the second driving assembly are respectively used for driving the service brake and the parking brake. The friction assembly is used for braking the vehicle. The adjusting assembly is used for adjusting the wear compensation of the gap between the brake pad and the brake drum. In the application, the two brake shoes of the friction assembly are connected with the first driving assembly and the second driving assembly through a differential structure, so that the two brake shoes can drive the brake pad to contact the brake drum under the driving of the first driving assembly or the second driving assembly with the same pressure, and the uneven wear of the two brake pads is avoided.

The invention provides a friction body material, a preparation method thereof and a composition brake shoe, and relates to the technical field of composition brake shoes for railway heavy-duty trucks. The friction body material comprises the following components or is prepared from the following raw materials in parts by weight: 46-68 parts of a bonding material; 48-88 parts by weight of a reinforcing material; 97 to 167 parts by weight of a filling material; the bonding material comprises phenolic resin and powdered nitrile rubber, and the auxiliary material comprises ethanol and octadecenoic acid. According to the friction body material provided by the invention, control on performance indexes such as hardness and impact strength of the composition brake shoe is realized, and an ideal friction coefficient is obtained so as to meet the requirements of railway general-purpose trucks with different axle loads and running speeds on brake abrasion performance.

A brake pad may include a brake lining configured to engage with a brake rotor operatively coupled to a wheel of the vehicle to exert friction to decelerate the vehicle, a backing plate to support the brake lining, and a wear indicator circuit operatively connected to the brake lining to detect brake pad wear. The wear indicator circuit can be printed externally onto the brake pad using conductive ink.

The application discloses a wind turbine high-speed shaft brake control system and method, which comprises a high-speed shaft brake power supply control loop, a high-speed shaft brake temperature detection control loop, a main control PLC, a safety relay and a rotating speed monitor, wherein the main control remote brake release switch K1 and the main control brake holding switch K4 of the high-speed shaft brake power supply control loop are connected with the main control PLC respectively, the safety relay switch K3 of the high-speed shaft brake power supply control loop is connected with the safety relay, the rotating speed control switch K2 of the high-speed shaft brake power supply control loop is connected with the rotating speed monitor, and the high-speed shaft brake temperature sensor R1 and the cabin temperature sensor R2 of the high-speed shaft brake temperature detection control loop are connected with the temperature acquisition module of the main control PLC respectively. The application can effectively solve the problems of high-speed shaft brake wear, loss of power generation of the unit and even cabin fire caused by the failure of the high-speed shaft brake control loop.

The invention discloses a turbulence-enhanced braking wear particulate aerosol uniform mixing device which comprises a shell, a brake disc driving shaft and a brake caliper connecting piece, and a mixing cavity is formed in the shell; the brake disc is installed at one end of the brake disc driving shaft and located in the mixing cavity, and the other end of the brake disc driving shaft rotationally penetrates out of the mixing cavity to be connected with an external power source. The brake caliper connecting piece is arranged on the brake disc driving shaft in a sleeving manner, and the brake caliper is mounted on the brake caliper connecting piece; an air inlet and an air outlet are formed in the shell, both communicate with the mixing cavity and are symmetrically formed in the two opposite sides of the brake disc; a sealing environment is provided through the shell, external interference is prevented, particulate matter leakage is avoided, the accuracy and reliability of a detection result are guaranteed, a stable installation foundation is provided for the brake through the brake disc driving shaft and the brake caliper connecting piece, the structure is simple, installation is convenient, and practicability is high.

The hydraulic power plant unit braking system signal feedback device comprises a reference assembly connected with a brake supporting plate, the reference assembly and the brake supporting plate synchronously and linearly move and are used for synchronously reflecting the movement stroke of a brake piston, the reference assembly is provided with a rack, and the rack is meshed with a stroke monitoring assembly; the stroke monitoring assembly comprises an anti-backlash gear and an encoder connected with the anti-backlash gear, the encoder is connected with the control unit, the control unit is used for receiving a rotation signal of the anti-backlash gear, calculating the abrasion loss of a brake disc and outputting a brake state feedback signal, and the signal feedback device can adjust a signal feedback threshold value according to brake abrasion. Effective brake strokes are accurately distinguished, signal feedback that a brake instruction is effective but a brake disc is not attached is avoided, meanwhile, early warning on abrasion of the brake disc of the brake is achieved, and operation safety of equipment is guaranteed.