22results about How to "Improve braking efficiency" patented technology

This utility model discloses a novel anti-fouling and anti-water-accumulation brake disc, including a brake disc body and an anti-fouling and anti-water-accumulation component. The brake disc body includes a disc plate, a disc hub, and heat dissipation holes. The disc hub is fixed on the disc plate and securely mounted on the wheel axle with bolts. Several heat dissipation holes are provided on the disc plate. The anti-fouling and anti-water-accumulation component is arranged on the disc plate. The anti-fouling and anti-water-accumulation component includes anti-fouling and anti-water-accumulation grooves and guide grooves. Several anti-fouling and anti-water-accumulation grooves are symmetrically arranged in a ring array on both sides of the disc plate. Guide grooves are symmetrically arranged on both sides of the anti-fouling and anti-water-accumulation grooves. The anti-fouling and anti-water-accumulation grooves have an arc-shaped inclined structure. The inclined direction of the anti-fouling and anti-water-accumulation grooves is opposite to the forward rotation direction of the disc plate. This novel anti-fouling and anti-water-accumulation brake disc has a simple and reasonable structure and ingenious design. Through the centrifugal force generated by the rotation of the disc plate, the dirt and water adhering to the surface of the disc plate can be discharged along the anti-fouling and anti-water-accumulation grooves, ensuring the friction coefficient between the brake pads and the brake disc body and the braking efficiency, and has a good anti-fouling and anti-water-accumulation effect.

The invention relates to an electro-mechanical brake caliper, a brake system and a vehicle. The electro-mechanical brake caliper comprises a caliper body, a brake disc and a brake disc, the brake pad is arranged on the caliper body; the driving module is arranged on the caliper body; the driving module comprises a driving part, a transmission mechanism, a first speed reducing mechanism, a second speed reducing mechanism, a first piston assembly and a second piston assembly; the driving part is in transmission connection with the first speed reducing mechanism and the second speed reducing mechanism through the transmission mechanism, the first speed reducing mechanism is in transmission connection with the first piston assembly, the second speed reducing mechanism is in transmission connection with the second piston assembly, and the first piston assembly and the second piston assembly can move in the first direction so as to abut against and drive the brake pad to move. The electronic mechanical brake caliper has good brake performance.

The invention relates to a fixed-time sliding mode anti-lock braking control method and system based on fuzzy logic and a neural network. The method comprises the steps that a dynamic model of a vehicle anti-lock braking system is established; designing a fixed time sliding mode controller, and constructing a sliding mode surface containing a terminal attractor and an approaching law; a T-S fuzzy logic system is adopted to approach a non-linear tire-road surface friction function in an ABS system on line; an approaching law of the sliding mode controller is approached online by adopting an artificial neural network; carrying out online optimization on additional control item gains introduced by neural network approximation by adopting a particle swarm optimization algorithm; and the fixed time stability of the whole closed-loop system is monitored based on the Lyapunov stability theory. According to the invention, the braking efficiency, the stability and the robustness of the ABS system are effectively improved, and the braking distance and the braking time are reduced.

A brake handle with a dynamically variable rotation center in the braking process comprises a brake shell, a piston assembly, a push rod assembly, a brake handle, a multi-fulcrum linkage component and a rotation switching mechanism. The shell is provided with a piston cavity. The handle drives the piston to move through the push rod. The linkage component is provided with two rotating fulcrums, and the switching mechanism can switch two working states. When the front section of the handle is pinched, the handle rotates around the first fulcrum, idle stroke is eliminated, and operation is labor-saving. When the rear section is pinched, the second fulcrum is switched to rotate, and the lever ratio is increased to improve braking force. By means of automatic switching of double fulcrums, labor-saving control and large braking force output are both considered, and the problem that a traditional hydraulic brake handle is poor in performance is solved; the modular structure is easy to adapt to mass production, and switching nodes are accurate and controllable; a locking and failure protection structure is arranged, so that the operation is stable and safe; meanwhile, eccentric wear of parts is eliminated, the service life of sealing pieces is prolonged, and braking efficiency and use safety are improved.

This invention discloses a radar-coordinated braking control method for electric-assist bicycles in complex road conditions, relating to the field of electric-assist bicycle control technology. The method includes acquiring radar-detected rear target signals, determining the presence of collision risk based on the changing trend of the rear target signals, and identifying the movement pattern of the rear targets; acquiring the rider's pedaling torque signal; when a collision risk is determined, predicting the moment when the rider's pedaling torque will begin to decrease based on the changing trend of the rear target signals; at the predicted moment, initiating mechanical braking pre-pressure and simultaneously reducing the motor's assist output. This invention utilizes residual assist to provide soft support for the rider's body posture, compensating for the instability caused by the forward shift of the center of gravity, and solving the timing conflict problem between braking intervention and rider posture changes in existing technologies. This improves braking efficiency in dangerous rear-end scenarios while enhancing the stability and smoothness of the riding process.

The application is a kind of airplane brake control method and system based on energy deviation and deviation change, belonging to the technical field of airplane brake control; the method steps include: calculating airplane landing energy; calculating airplane landing energy deviation, and quantitatively classifying landing energy deviation; calculating first brake airplane energy and first brake energy deviation; calculating the deviation change of first brake energy deviation and landing energy deviation, and quantitatively classifying the deviation change; determining brake reference pressure according to airplane landing energy deviation and deviation change, and completing self-adaptive adjustment of brake pressure under different airplane landing configurations. The application determines the reference pressure of this stage brake control according to energy deviation E and energy deviation EC, realizes airplane brake control based on energy deviation and deviation change, completes self-adaptive control of airplane brake, fully develops brake efficiency, and improves brake efficiency.

The invention belongs to the technical field of elevator anti-falling, and particularly relates to a freight elevator with a car anti-falling brake mechanism, which comprises a freight platform, a safety clamp, a traction rod, a sleeve, a speed limiting index and an auxiliary clamp, the freight platform is arranged at the bottom of a car and used for carrying passengers, and guide rails are arranged on two sides of the freight platform; the two safety tongs are arranged at the bottom of the cargo carrying platform, ascending connecting rod mechanisms for triggering linkage are arranged on the side faces of the safety tongs and used for enabling the safety tongs to grasp the guide rail, the traction rod is arranged between the two safety tongs, the two ends of the traction rod are connected to the ascending connecting rod mechanisms on the safety tongs respectively, and the sleeve is arranged on one side of each ascending connecting rod mechanism. The sleeve is used for limiting the movement range of the ascending connecting rod mechanism, and the sleeve is arranged outside the speed limiting index in a sleeving mode and is in sliding fit with the speed limiting index. Two-stage braking can be achieved, it is ensured that multiple sets of braking units respond quickly and synchronously during triggering, the safety margin is prolonged, reliable parking within a preset distance is achieved, and the safety of personnel and equipment is guaranteed.

The invention relates to the technical field of vehicle control, and discloses a vehicle longitudinal deceleration control method, device and system and a vehicle. Under the working condition that the vehicle is located on a low-adhesion road surface and activates an anti-lock braking system for a long distance, if it is determined that main cylinder brake fluid in a hydraulic drive-by-wire braking system is insufficient, the vehicle longitudinal deceleration control method is started; if yes, the hydraulic brake-by-wire system is controlled to close a wheel side pressure release valve, and a main cylinder is controlled to supplement brake fluid; according to hydraulic braking information required by the hydraulic brake-by-wire system for achieving the expected braking effect under the current working condition, caliper braking information generated when a caliper of the electronic parking braking system is used for braking is generated; the caliper braking information comprises parameters when the electronic parking braking system is used for braking to achieve an expected braking effect; and based on the caliper brake information, brake control is performed through a caliper of the electronic parking brake system until the master cylinder reaches the completion condition of brake fluid supplement. The device has the beneficial effect that the braking efficiency of the liquid supplementing device is improved.

This application relates to the field of unmanned aerial vehicle (UAV) control technology, and discloses a jet-driven high-speed braking method and device for UAVs. The method includes: a control unit acquiring flight attitude data of the UAV and relative correlation data between the UAV and obstacles; the control unit generating a braking command based on the relative correlation data and generating a nozzle angle adjustment command based on the flight attitude data; the control unit controlling a servo drive module to drive the nozzle to adjust the airflow injection direction and controlling the nozzle to inject airflow in the airflow injection direction, thereby generating an instantaneous reverse braking force until the control unit generates a safety command based on the relative correlation data to complete the braking of the UAV. This application can improve braking response speed and ensure the flight safety of UAVs.

The utility model relates to tractor braking technical field, concretely discloses a kind of electric driving tractor brake device, including brake cover, the outside of brake cover is provided with driving shaft, the outside of driving shaft is provided with rotating shaft, and rotating shaft is located in brake cover, the outside of rotating shaft is provided with special-shaped block, and the other end of special-shaped block is rotatably provided with push frame;The other end of push frame is provided with arc push plate, the outside of arc push plate is provided with mounting plate, the outside of mounting plate is provided with arc brake pad, and brake cover has the through slot compatible with arc brake pad, the overall structure of the present brake device is compact, convenient to install, can be directly compatible with the structure of existing electric driving tractor, without modifying tractor, and can effectively ensure the stability of brake force output, avoid tractor brake lag and the problem of skidding.

The utility model belongs to the technical field of automobile door locks, and discloses a door lock locking piece driving device, a door lock and a vehicle, the door lock locking piece driving device comprises a motor, a microswitch and a transmission mechanism, the microswitch is connected with the motor in parallel, and the microswitch is configured to enable the motor to be short-circuited and braked when being closed; the output end of the motor is in transmission connection with the input end of the transmission mechanism, and the output end of the transmission mechanism is provided with a locking position enabling the locking piece to lock the spring bolt and an unlocking position enabling the locking piece to unlock the spring bolt. The output end of the transmission mechanism is connected with an extrusion part, and when the output end of the transmission mechanism is located at the locking position, the extrusion part can act on the microswitch, so that the microswitch can be in a closed state. According to the door lock locking piece driving device, the door lock and the vehicle, the braking efficiency is high, the braking performance of the lock body is improved, and the safety coefficient is increased.

The present application relates to the technical field of vehicle electronic control, in particular to a time-varying optimal slip rate prediction and control method for electric vehicles based on time delay characteristics. The time-varying optimal slip rate prediction method in the present application takes the utilization adhesion coefficient, real-time slip rate and time delay factor of the current section as input, combines the known parameters of the reference section, and accurately calculates the time-varying optimal slip rate with the help of the correlation function. The motor braking torque calculation method based on the time-varying optimal slip rate takes the predicted time-varying optimal slip rate as the control target, first establishes a state space equation with the slip rate and its first derivative as state variables and the motor braking torque as the control variable, and discretizes it into a model suitable for digital control, then constructs a cost function that minimizes the slip rate tracking error and torque jump at the same time, obtains the optimal motor braking torque sequence by optimization, and finally outputs the first control variable in the sequence to realize accurate braking of the vehicle.

The application discloses a kind of air bearing supported turntable structure of air float turntable technical field, including support seat, motor stator and motor rotor are installed in the inside of support seat, the center of motor stator is connected with the axle, the top of axle is equipped with bearing turntable;Brake frame is installed at the top of support seat, brake plate is connected with the inside of brake frame by elastic expansion piece, the top of brake plate is equipped with brake block compatible with the bottom brake groove of bearing turntable, the present application solves the existing air float turntable in the power of clamping control basically comes from air pressure, if air float turntable internal air pressure is insufficient or no air pressure, clamping effect can be greatly reduced, leading to air float turntable can continue to rotate, the precision of control is poor, and air float turntable is used before, when air pressure is not sufficient friction is greater, it can still rotate, easy to bring certain wear to air float bearing, affect component precision, not conducive to people use problem.

The invention discloses a mechanical braking and in-cylinder compression release braking combined control method and system, and relates to the technical field of service braking. Comprising the following steps: collecting historical data, setting an activation condition, dividing scenes according to a vehicle speed difference value, a road gradient and a road adhesion coefficient, marking priorities, and generating scene labels; the method comprises the following steps: collecting real-time data of a vehicle, a driving condition and operation, and preprocessing the collected real-time data; according to the technical key points, historical data are analyzed, labels are given to different scenes, the problems that in the current brake technology, the starting precision is insufficient, and the applicable scene is single are solved, braking can be accurately started under various conditions, data are collected through active input, automatic judgment and scene adaptation, and the braking precision is improved. Scenes are divided in combination with the vehicle speed difference, the gradient and the road condition, response is rapid, accuracy is high, false triggering can be effectively avoided, meanwhile, an accurate scene basis is provided for a subsequent control strategy, and the method has a good use prospect.

The utility model relates to a kind of hydraulic devices, comprising: first circuit, first circuit is used to supply hydraulic fluid to hydraulic brake via first pipeline and include switch valve;Second circuit, second circuit includes the second pipeline fluidly connected upstream of switch valve, and including pollution sensing device and unloading valve arranged downstream of pollution sensing device, pollution sensing device is used to sense the pollution degree of hydraulic fluid in second pipeline;And control device, control device is connected to the pollution sensing device and unloading valve of second circuit, and according to the size of pollution degree to adjust the opening or closure of unloading valve.This hydraulic device can realize the oil pollution degree monitoring upstream of switch valve, and can complete oil cleaning as required, without affecting the quick response of brake, so as to improve the reliability of hydraulic device.In addition, the utility model also relates to a kind of brake system.

The utility model discloses a heat crack resistant casting reinforcing rib structure of an automobile brake disc, which is arranged on an inner side friction plate close to a wheel and positioned in a space between an outer side friction plate and the inner side friction plate, and comprises a plurality of radial reinforcing ribs, an outer ring reinforcing rib and an inner ring reinforcing rib, each radial reinforcing rib is arranged in an S shape, the outer ring reinforcing ribs are annularly arranged on the outer ring of the inner side friction plate in the circumferential direction of the inner side friction plate, and the inner ring reinforcing ribs are annularly arranged on the inner ring of the inner side friction plate in the circumferential direction of the inner side friction plate. According to the brake disc, the radial reinforcing ribs, the outer ring reinforcing ribs and the inner ring reinforcing ribs are matched with one another to form a complete reinforcing structure system and act together in different directions, so that the brake disc can bear complex stress conditions, the overall mechanical property is improved, and the brake disc better meets the requirements under various brake conditions; and safe and reliable operation of an automobile brake system is ensured.

The present application relates to the technical field of energy storage, in particular to a water buoyancy type energy storage system and an energy storage system, the energy storage system comprises a cavity, the cavity contains groundwater, a moving weight is arranged in the cavity, the moving weight is connected with a traction rope, a supporting device is arranged on the cavity, a steering device is arranged on the supporting device, the traction rope passes through the steering device and is connected with a winding drum, the winding drum is connected with a connecting brake, the connecting brake is connected with a mechanical energy transmission device, the mechanical energy transmission device is connected with a drive power generation all-in-one machine; by arranging the cavity, the bead type weight, the steering device, the mechanical energy transmission device and the drive power generation all-in-one machine, the device can convert the external power supplied by the power supply device into mechanical energy first and then into the gravitational potential energy of the bead type weight for storage, the material used in the system has low cost, is environmentally friendly and recyclable, the service life of the whole energy storage system is long, the requirement for geographical environment is low, and the system can be applied to different regions.

This utility model discloses an electric push rod mechanism for agricultural machinery braking, including a push rod fixing device, a crankshaft fixing device, an electric brake push rod, a crankshaft connecting device, a crankshaft, a mechanical connecting rod, a brake connecting rod, and a drum brake disc. The electric push rod mechanism provides power in both positive and negative directions via voltage. The lifting rod at the front end of the electric brake push rod transmits power to the crankshaft connecting device, which then drives the crankshaft to rotate, transmitting power to the mechanical connecting rod. The mechanical connecting rod then transmits power to the brake connecting rod, which in turn transmits power to the drum brake disc. The drum brake disc can achieve braking effect according to the movement state of the push rod, thereby improving the safety and efficiency of agricultural machinery braking.

The utility model relates to a kind of liquid supplementing valve structures suitable for automobile hydraulic brake system, belong to the field of automobile brake-by-wire system.Sealing valve seat is located in valve body, limiting valve seat is threadedly connected with valve body, sealing valve seat rear end face and limiting valve seat front end face top, sealing valve core front end is located in the liquid supplementing hole of valve body, valve core spring is located between sealing valve core and sealing valve seat, sealing valve core rear end boss and valve port boss of valve body are tightly sealed by toping.The advantage is novel structure, access between liquid storage tank and booster cylinder, when brake system booster cylinder needs to be quickly liquid-supplemented, booster cylinder piston is quickly returned, negative pressure is generated in booster cylinder, valve core spring resistance is overcome to push valve core to move, open liquid supplementing hole, brake fluid is directly supplemented in booster cylinder from brake liquid storage tank, ensure brake efficiency;The problem that whole vehicle brake failure is caused due to the low booster cylinder liquid-supplementing rate is solved, effectively improve booster cylinder liquid-supplementing efficiency, improve whole vehicle safety.

The present application relates to the technical field of vehicle control, and discloses a TCU low-speed lock system and method, which preliminarily predicts the deceleration expectation of a driver when downhill driving by sensing different brake strokes and brake forces, fuses the slope + wheel speed / rotation speed signals detected by an IMU in real time, dynamically calculates a target gear by a TCU according to various sensors and other vehicle information, automatically calculates an optimal lock point, and synchronously adjusts fuel injection quantity, ignition angle and other electronic injection parameters by a joint ECU during the collaborative action of an electric control clutch and a gear shifting motor, so as to realize multi-system collaborative control, reduce brake load, reduce brake disc temperature rising speed, prolong the service life of the brake disc, greatly improve the engine braking efficiency, smooth the downshift and lock processes, improve the driving stability of the vehicle on a curve, improve the fuel economy of the vehicle and optimize the driving experience.

The application discloses a triaxial six-wheel vehicle braking system and a vehicle, which comprises a first shaft, a second shaft and a third shaft arranged in sequence from front to back; two shafts among the first shaft, the second shaft and the third shaft are interconnected through same-side braking by a brake pipe; air springs are arranged on the wheels of the second shaft and the third shaft respectively, and the air springs of the same-side wheels are interconnected by an air pipe. The application realizes the simultaneous braking of the wheels on the two sides of the same side by interconnecting the two shafts among the first shaft, the second shaft and the third shaft through same-side braking by a brake pipe and interconnecting the air springs of the same-side wheels among the wheels of the second shaft and the third shaft by an air pipe, and the pipeline arrangement is simple. The air springs on the two sides of the rear wheels in the triaxial six-wheel vehicle braking system are interconnected, the wheel pressure of the single-side wheel is real-time equal, the maximum braking force of the corresponding vehicle is realized, and the braking efficiency and the braking efficiency of the triaxial six-wheel vehicle braking system are improved.