2078 results about "Brake pad" 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 utility model relates to the field of machine tools, in particular to a rotary table brake device and a machine tool, the rotary table brake device comprises a base, a rotating shaft, a working table, a brake assembly, a braking oil way and a reset structure, the brake assembly comprises a brake disc, a brake cylinder body, a brake piston and a brake pad, and a cavity is formed between the brake disc and the brake cylinder body; the brake piston is located in the cavity and divides the cavity into a first cavity and a second cavity which are not communicated, a preset gap is formed between the upper end of the brake disc and the lower side portion of the brake piston, one side of the brake pad is fixed to the rotating shaft, and the other side of the brake pad is located in the preset gap. The braking oil way is communicated with the first cavity to achieve braking of the rotary table, the reset structure is located in the second cavity or connected with the second cavity to achieve reset after braking, the rotary table braking device is simple and compact in overall structure, accurate braking can be achieved during braking, rapid and stable recovery can be achieved during resetting, and the service life of the rotary table is prolonged. And the stability and reliability of machine tool turntable operation are effectively improved.

A brake apparatus for a vehicle may include: a torque member having a pair of brake pads installed therein and spaced apart from each other, and configured to surround a brake disk; a caliper configured to cover the torque member, and having a gravitational center adjuster configured to adjust the position of a gravitational center toward the brake disk; a pair of guide rods configured to connect the torque member and the caliper, such that the caliper is slidably coupled to the torque member; and an actuator mounted on the caliper.

The invention relates to the technical field of friction plates for vehicles, and particularly discloses a resin-based friction plate for an aluminum-ceramic brake disc and a preparation method of the resin-based friction plate for the aluminum-ceramic brake disc. Steel fibers serve as a main reinforcing phase, the structural strength of the material is improved, and meanwhile the steel fibers are good friction increasing materials; the reduced iron powder can improve the heat-conducting property of the brake pad and reduce the decline of the friction coefficient at high temperature; the red copper powder and the brass powder are good lubricants, the stability of single braking can be improved, and meanwhile abrasion is reduced; the silicon carbide mainly plays a role in increasing the high-temperature friction coefficient; molybdenum disulfide is beneficial for improving the recovery performance after high-temperature decline and reducing abrasion; antimony sulfide is lubricated at high temperature, and the friction coefficient in the decline stage is increased; silicon carbide is a high-hardness material, so that the friction coefficient is increased; the potassium magnesium titanate lamellar crystal improves the damping characteristic of the material and absorbs vibration and reduces noise, and the resin-based friction plate has the advantages of being high in strength, good in heat conduction, stable in friction performance, resistant to abrasion, comfortable in braking and the like and meets the use requirement of an aluminum ceramic brake disc.

According to the brake device based on the motor, the motor is adopted to drive the threaded sleeve to rotate, the threaded sleeve drives the threaded rod to move, the pressure sensor is installed between the threaded rod and the brake seat, the clamping force between the brake pad and the brake disc is detected through the pressure sensor, on one hand, it can be guaranteed that the brake pad and the brake disc effectively clamp the brake, and the brake effect is guaranteed; on the other hand, the braking force can be detected, and the braking force is controlled through the motor, so that accurate control over the braking force is achieved; meanwhile, the brake displacement of the brake pad can be calculated through the rotation angle of the motor, the transmission between the motor and the brake seat and the size every time, and therefore the abrasion loss between the brake pad and the brake disc can be known by comparing the brake displacement with the brake displacement when the brake pad is not abraded; due to the fact that the brake disc is not abraded generally (the abrasion resistance of the general brake disc is far superior to that of the brake pad), the abrasion loss is basically the abrasion loss of the brake pad, and the abrasion loss of the brake pad and whether the brake pad needs to be replaced or not can be monitored.

The invention relates to a shared bicycle brake pad abrasion monitoring system and a monitoring method thereof, and aims to solve the problems that in the prior art, shared bicycle brake pad abrasion monitoring is high in cost and low in precision, and abnormal abrasion cannot be detected, and accurate monitoring is achieved through a multi-parameter correction model of brake frequency statistics and pressure distribution perception. A microswitch is arranged on a brake pedal, three film pressure sensors are arranged on a brake pad steel backing, a brake pressure value, an average effective pressure Pavg and a pressure distribution difference delta P are synchronously collected, a wear estimation model is built by combining working condition data such as temperature and vehicle speed, and a material coefficient k, a vehicle speed correction coefficient f (v) and a temperature correction coefficient g (T) are adopted for multi-dimensional correction, so that the wear estimation precision is improved. And calculating the accumulated abrasion loss and predicting the residual thickness. Accurate recognition of abnormal wear such as eccentric wear and block falling is achieved by analyzing a delta P threshold value and Pavg mutation characteristics, parameter customization of brake pads made of different materials is supported, and a graded early warning function is achieved.

The invention provides a brake pad end face slotting machining device, and belongs to the technical field of milling. Comprising a milling device body, a first motor is installed at the top of the milling device body, a milling cutter driving mechanism is installed at the top of the milling device body, a milling cutter body is installed on the milling cutter driving mechanism, and a second motor is installed at the top of the milling device body. By arranging the limiting and fixing mechanism and the overturning auxiliary mechanism, the milling cutter body can be flexibly adjusted in any position of the top space of the milling device body through the first motor and the milling cutter driving mechanism, and the milling cutter body can conveniently conduct milling treatment on a brake pad body placed at the top of the milling device body; and in the milling process of the brake pad body, the brake pad body can be quickly and stably mounted on the first movable block through the limiting and fixing mechanism.

The invention relates to the technical field of brake pads, in particular to a brake pad capable of reducing abrasion of a brake disc and a preparation technology thereof.The brake pad comprises, by weight, 20%-32% of reinforcing fibers, 12%-18% of a binder, 22%-34% of a friction regulator and 24%-38% of filler and functional additives, the reinforced fibers are at least one of titanium carbide coated carbon fibers, steel fibers and aluminum silicate ceramic fibers. According to the invention, the reinforced fibers construct a high-strength heat conduction network, and heat is quickly dispersed to reduce thermal stress concentration; the binder ensures the structural stability at high temperature; the friction regulator optimizes a friction coefficient curve through the synergistic effect of lubrication and friction increasing, and high-temperature fluctuation is avoided; the filler and the functional additive enhance the heat absorption and buffering capability, and adjust pores to relieve thermal shock. All the components have a synergistic effect, so that hot cracks of the brake disc can be reduced, and the crack resistance and the brake stability under extreme working conditions are improved.

The invention discloses a high-stability electromagnetic brake convenient to disassemble and assemble, and relates to the technical field of brakes. Comprising a shell, a base is installed on the top of the shell through a connecting shaft, a rotating shaft channel is formed between the base and the top of the shell in a penetrating mode, an armature is arranged on the portion, located on the surface of the rotating shaft channel, between the base and the shell in a sleeving mode, an electromagnetic coil is arranged in the shell, and an installation mechanism is arranged at the bottom of the shell. A compensation assembly is arranged at the top of the armature, a rotating disc is rotationally connected to the position, located on the surface of the periphery of the rotating shaft channel, in the cavity in the device shell, a connecting rod is arranged in the armature in a limiting mode, an unlocking assembly is arranged at the bottom of the shell, and the armature and the shell are installed easily and can be operated by one person; gaps in all directions between the armature and the electromagnetic coil are ensured to be the same, adjustment is easy, and automatic compensation after the brake pad is abraded is achieved.

The invention relates to a brake pad or a disc brake caliper, comprising a support plate receiving a friction material. According to the invention, the support plate is made from low-alloy carbon steel containing less than 0.3% by weight of carbon and vanadium in an amount between 0.2 and 0.3% by weight.

The utility model discloses a brake pad friction coefficient detection machine which comprises an installation seat, a top plate is arranged on the installation seat in parallel through a support, a detection piece used for detecting the friction coefficient of a brake pad is fixedly arranged on the top plate, a limiting seat in a regular polygon prism shape is fixedly arranged on the upper surface of the installation seat, and the limiting seat is fixedly arranged on the lower surface of the installation seat. Each side face of the limiting seat is provided with a clamping mechanism corresponding to the side face of the limiting seat, a rotating shaft is vertically and rotatably arranged at the center axis position of the upper surface of the limiting seat, and the side face of the rotating shaft is provided with a detection head capable of abutting against the surface of each to-be-detected brake block through a connecting rod. When the device is used, the problems that in the prior art, a detector can only detect the friction coefficient of one brake pad at a time and cannot detect a plurality of brake pads at the same time, so that the detection efficiency is low, and meanwhile, the performance difference of different brake pads under the same condition is difficult to comprehensively reflect are solved.

A brake actuator (10) is specified, in particular for an electromechanical vehicle brake, having a brake caliper (12) in which an intermediate space (14) is formed for a brake rotor, wherein a brake pad (16), which can be applied against the brake rotor, is arranged in the intermediate space (14), a brake piston (18) for applying the brake pad (16) against the brake rotor, a spindle drive (20) which comprises a spindle (22) which is driven by an electric motor and a spindle nut (24) which is mounted on the spindle (22) via a thread pair which is designed to be self-releasing, and a ball ramp mechanism (28) which comprises a first ramp body (30) which is mounted fixedly in terms of rotation and which has an actuating surface (32) which is oriented toward the brake piston, and a second ramp body (34) which is arranged between the first ramp body (30) and the spindle nut (24). The spindle nut (24) is axially applied by means of a spring (35) against the second ramp body (34) and this second ramp body is axially applied against the first ramp body (30). The brake actuator (10) also comprises an electric motor which is coupled in terms of drive via a gear unit (26) to the spindle (22), in order to apply the brake piston (18) against the brake rotor (16).

An electromechanical brake actuator (10) for a brake of a vehicle (100) has a brake tappet (14) that can be moved substantially translationally for transmitting a compressive force (F) in the direction of a brake pad (6, 6′), a drive member (16) that generates a drive movement (A) and a coupling gear (18) that operatively connects the drive member (16) to the brake tappet (14). The coupling gear (18) converts the drive movement (A) of the drive member (16) into an adjustment movement (B) of the brake tappet (14). The coupling gear (18) has a coupling member (38) in contact with the brake tappet (14) that moves along a cam path (40, 60) and converts the substantially uniform drive movement into an adjustment movement (B) of the brake tappet (14) at, in portions, a non-uniform adjustment speed (B′).

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.

A brake system (10) comprising: a brake caliper (12) supporting a brake pad (14), and having a first brake piston (24) and a second brake piston (28) that are configured to move the brake pad; a first rotary to linear stage mechanism (32) connected to the first brake piston, and a second rotary to linear stage mechanism (34) connected to the second brake piston; a motor (42) configured to generate torque; a torque distributing assembly (40) configured to receive torque from the motor and then distribute the torque from the motor to the first rotary to linear stage mechanism to move the first brake piston and / or to the second rotary to linear stage mechanism to move the second brake piston; wherein the torque distributing assembly comprises: i) a first driving gear (44) connected to the first rotary to linear stage mechanism; ii) a second driving gear (46) connected to the second rotary to linear stage mechanism; iii) a first set of planet gears (72) supported on respective first axles (74); iv) a second set of planet gears (98) supported on respective second axles; and v) a first carrier plate (88) having a plurality of support features each configured to support a respective one of the first axles and a respective one of the second axles.

The utility model relates to a mechanical and electrical integrated brake caliper. According to the technical scheme, the mechanical and electrical integrated brake caliper comprises a caliper body, two hydraulic brake pads and two motor brake pads. A mounting groove is formed in the calipers; the two hydraulic brake pads are slidably mounted on the two sides of one end of the mounting groove correspondingly. A hydraulic driving module is arranged on the calipers; the output end of the hydraulic driving module abuts against the two hydraulic brake pads. A motor driving module is further arranged on the calipers; one motor brake pad is fixedly mounted on one side of one end, far away from the hydraulic brake pad, of the mounting groove; the other motor brake pad is slidably mounted on the other side of the end, away from the hydraulic brake pad, of the mounting groove and abuts against the output end of the motor driving module. The brake caliper is stable in overall structure and convenient to install, a hydraulic caliper structure and an electronic caliper structure can be combined into a mechanical and electrical integrated brake caliper, and the integrated structure is higher in stability and safety; the space is saved, and meanwhile the parking effect is reserved.

The invention discloses a testing device for an electronic mechanical brake caliper component. The testing device comprises a base, a fixing component, a first displacement testing component, a second displacement testing component and a brake disc simulating component. The base comprises a bearing surface, and a guide rail is arranged on the bearing surface; the fixing part is movably connected with the guide rail and is used for supporting the electronic mechanical brake caliper part; the first displacement testing part is arranged on one side, located in the first direction, of the fixing part and is used for measuring the displacement of the electromechanical brake caliper part; the second displacement testing part is arranged on the other side, located in the first direction, of the fixing part and used for measuring the displacement of the electromechanical brake caliper part; the brake disc simulating part is arranged between the fixing part and the first displacement testing part so as to detect the pressure of the brake pad. Through the scheme of the application, multiple parameters such as clamping force, displacement, response time, brake pad stress distribution and the like of the electronic mechanical brake caliper component and the relationship among the multiple parameters can be tested.

The invention relates to the technical field of brake pads, in particular to a brake pad adaptive to a carbon-ceramic brake disc and a preparation process thereof.The brake pad comprises, by weight, 25%-57% of reinforced fibers, 22%-49% of a lubricant, 7%-17% of a binder, 7.2%-28.1% of a friction modifier and 3%-23% of filler; the reinforced fiber is at least one of nano silicon nitride modified ceramic fiber, carbon fiber and aramid fiber. Through cooperation of the components, the prepared brake pad has the advantages of being good in heat conduction, resistant to shearing and abrasion, good in toughness, capable of reducing noise, stable in friction coefficient, reliable at low temperature, high in high-temperature braking force, stable in braking and the like.

The invention belongs to the technical field of brake pad detection, and particularly relates to an abrasion resistance detection device for an automobile brake pad, which comprises a detection table, and a brake pad placing and positioning assembly is arranged on the detection table; the brake pad placing and positioning assembly comprises a placing table fixedly connected to one side of the upper end face of the detection table, a plurality of guide rods are slidably connected to one side of the bottom of the placing table, a positioning table is fixedly connected to the upper ends of the guide rods, and a through hole allowing the positioning table to penetrate through is formed in the placing table. By means of the detection auxiliary assembly, after friction work of the grinding disc on the surface of the brake pad is finished, the surface of the brake pad is coated with pigment through the coating roller, and due to the fact that the abrasion area of the surface of the brake pad is in a concave shape, the pigment can only be coated on the non-abrasion area of the surface of the brake pad. Therefore, the abrasion area and the non-abrasion area of the surface of the brake pad form a distinct contrast, and the accuracy of abrasion resistance detection is improved.

Recess and protrusion features on a brake pad backing plate and an air disc brake tappet create a unique interface that keys the backing plate for use with the tappet. If the backing plate and / or tappet move during braking, the force applied by the protrusion of the tappet against the inner wall of the recess, or vice versa, can cause stress or damage to the backing plate, tappet, and / or other parts of the braking system. To accommodate such movement, the inner dimensions of the recess can be made greater than the outer dimensions of the protrusion. In one embodiment, the minimum dimensions of the recess are determined from a stack-up of tolerances of various components in the braking system. In another embodiment, maximum dimensions of the recess are determined to avoid overlapping step-down transitions in the backing plate and tappet during braking.

The invention concerns a Brake carrier (10) for disc brake arrangement (11), the disc brake arrangement (11) having brake pads (24) that are displaceable relative to a brake disc (100), wherein the brake carrier (10) is configured to support the brake pads (24) during their displacement; wherein the brake carrier (10) comprises at least a first portion (14) that is arrangeable on a first side (13) of the brake disc (100), a second portion (16) that that is arrangeable on a second side (15) of the brake disc (100) and two connecting portions (18, 20) each connecting the first and second portions (14, 16); wherein at least one of the connecting portions (18, 20) comprises an air channel (12) having a first end (34) that is arranged so as to face towards the brake disc (100). Also disclosed is a disc brake arrangement (11) comprising such a brake carrier (10).

The invention belongs to the technical field of brake pad production, and particularly relates to a brake pad UV code spraying conveying device which comprises a base, a rack is arranged on one side of the upper end face of the base, a first conveying belt is arranged on one side of the rack, a third conveying belt is arranged on the other side of the rack, and a brake pad direction adjusting assembly is further arranged on the rack. The brake pad direction adjusting assembly comprises a second frame body fixedly connected to one side of the upper end of the rack, and two first guide plates are arranged on one side of the second frame body in a sliding mode through third lead screw guide rails. By means of the brake pad direction adjusting assembly, before code spraying, disorderly stacked brake pads can be in a tidy arrangement state, the directions of the brake pads are adjusted according to the brake pad direction information obtained through the visual detection device, each brake pad is aligned to the code spraying head at a fixed angle, and therefore accurate code spraying of the brake pads is achieved; and thus, the consistency of code spraying is ensured.

The utility model relates to the technical field of motorcycle accessories, and discloses a motorcycle brake caliper with efficient heat dissipation, which comprises a first mounting block and further comprises a second mounting block connected to one side of the first mounting block, a fixed disc fixedly connected to the inner side of the second mounting block, and mounting columns connected to the tops of the two sides of the fixed disc in a penetrating manner, and the mounting column is fixedly mounted in the first mounting block, the outer wall of the mounting column is sleeved with a brake disc, the brake disc and the fixed disc are distributed in parallel, and brake pads are fixedly connected to the inner sides of the brake disc and the fixed disc correspondingly. According to the brake disc, the cooling flow channel is formed in the fixing disc, under the action of the circulating water pump, the circulating water pump conducts cooling circulation on the cooling flow channel, cooling of the fixing disc is achieved, the through holes are formed in the fixing disc, the heat dissipation effect of the heat dissipation holes in the brake disc is further improved, and the service life of the brake disc is prolonged. And the efficient heat dissipation effect of the brake pad is ensured, and the braking effect of the brake pad is improved.

A brake in combination with a slider for holding an aircraft workpiece in position for maintenance. The combination has a slider which circumscribes and moves on a support bar and a brake configured to lock the slider in place on the support bar. The brake has a brake pad internal to the slider and at least partially congruent with the support bar. The brake pad is engageable and disengageable from the support bar by respective insertion and retraction of a key pin extending outwardly from the wall of the slider. The key pin and the brake pad are connected by a driver pin, so that insertion of the key pin towards the support bar urges the driver pin towards the support bar and the brake pad into locking contact with the support bar. A method of locking an aircraft workpiece in position for maintenance is also disclosed. The method comprises the steps of: providing a stand having X, Y, Z adjustability of a fixture for holding the aircraft workpiece moving a slider to a predetermined position on a spreader, locking the slider the in the predetermined maintenance position with a brake and joining an aircraft workpiece to the fixture.

The application relates to the brake pad manufacturing field and particularly relates to a brake pad cleaning equipment, which comprises a frame body, ultrasonic oscillators are installed on the frame body, a cleaning cavity is arranged in the frame body, a fixed connecting plate is fixedly installed in the frame body, a guide rod is fixedly installed on the fixed connecting plate, a lifting plate is slidably arranged on the guide rod, a brake pad is placed on the lifting plate, a guide column is fixedly installed on the fixed connecting plate, an arc-shaped guide groove is arranged in the guide column, a connecting piece is slidably installed on the guide column, the connecting piece is connected with the lifting plate, a connecting protrusion is integrally connected on the connecting piece, and the connecting protrusion is in sliding contact with the arc-shaped guide groove. In the application, when the lifting plate moves downwards along the guide rod, the lifting plate rotates, the brake pad is driven to move upwards and downwards, the brake pad is rotated, and the cleaning effect is good.

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 discloses brake pad powder mixing and weighing equipment, and belongs to the technical field of brake pad production. The device mainly comprises a discharging assembly and a knocking assembly, a storage assembly comprises a processing table, a top cover is arranged on the processing table, a weighing assembly comprises a first box body arranged at one end of the top cover, two drawer parts are inserted into the side face of the first box body in a sliding mode, the bottoms of the drawer parts are open, and the discharging assembly comprises a concave plate installed at one end of the inner wall of the first box body. A sliding block sliding in the linear direction of the concave plate is arranged in the concave plate, a connecting rod is installed on the side face of the sliding block, a shielding plate is installed at one end of the connecting rod and inserted into the side face of the drawer part in a sliding mode, a weighing sensor is arranged on the shielding plate, and a scraping plate is installed on the side wall of the drawer part. The bottom end of the drawer part communicates with a discharging hopper, and a knocking assembly is installed on the first box body. According to the brake pad powder mixing and weighing equipment, powder is moved out after being received through the baffle plate, residues are scraped away through the scraper, the shielding part guides the powder to reduce viscosity, and the knocking assembly breaks the viscosity to prevent interference.

The invention discloses a composite friction material and preparation and application thereof in brake pads, the composite friction material takes phenolic resin as a matrix, and modified barium sulfate and red copper fiber are dispersed in the matrix; the modified barium sulfate is composed of barium sulfate particles and a coating layer on the surfaces of the barium sulfate particles, that is, the modified barium sulfate has a core-shell structure, and the coating layer comprises a UiO-66 metal organic framework material. Compared with the existing pure phenolic resin and a composite material only added with common barium sulfate particles, the composite friction material provided by the invention has remarkable advantages in the aspects of friction coefficient, thermal stability and wear resistance by introducing the modified barium sulfate, can reduce friction noise, and is suitable for being used as a brake pad material.

A disc brake system includes a carrier and a brake pad having a backing plate and a friction material supported by the backing plate. The backing plate and friction material are configured so as to minimize any possible interference with the caliper housing, while maximizing the strength and durability of the brake pad. A method of actuating a disc brake system is also provided.

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.