2771 results about "Braking system" patented technology

Systems and methods of operating a fracturing operation include a platform having an upper surface and a channel, wherein the platform is configured to receive a carrier mounted with a pumping unit; and a conduit configured to transfer fluid to or from a manifold system, the conduit having a first end configured to be connected to the pumping unit. The channel may be configured to receive the conduit when the carrier is at least partially received on the platform. A guide member may be configured to guide the conduit into the channel and include a rounded portion and an abutment surface, wherein the conduit is configured to extend at last partially around the rounded portion, and the carrier is configured to engage the abutment surface. The systems and methods may also include a controller configured to control a braking system of the carrier when the pumping unit is actuated.

A stable walking apparatus can be used to allow the elderly, disabled, injured, or infirmed to move for day-to-day activities and exercise. The apparatus supports the individual at an upper body portion, such as under the arms of the user. This allows use of the arms and legs of the individual, such as better balance and move with the device, while also controlling aspects of the device. The support is height adjustable, and also includes a braking system to both slow down and stop the user-apparatus. The braking system can be used with limited extremity functionality for greater use of the apparatus by a wide range of individuals. Swiveling wheels provide for additional functionality to use the device for more purposes and in increased locations.

The application discloses an intelligent electric chassis configuration and a fault-tolerant control method of the intelligent electric chassis, and relates to the technical field of electric chassis. The chassis configuration comprises a front axle centralized motor drive assembly, a rear axle distributed motor drive assembly, a front axle electronic hydraulic brake system, a rear axle electronic mechanical brake system and a chassis domain controller. The front axle centralized motor drive assembly comprises a centralized drive motor, a front wheel speed reducer and a drive half shaft which are sequentially connected. The rear axle distributed motor drive assembly comprises a left rear wheel end drive motor and a left rear wheel speed reducer which are sequentially connected, and a right rear wheel end drive motor and a right rear wheel speed reducer which are sequentially connected. The front axle electronic hydraulic brake system comprises a first main brake unit and a redundant brake unit. The rear axle electronic mechanical brake system comprises a second main brake unit. The chassis domain controller is used for controlling the centralized drive motor, the left and right rear wheel end drive motors, the first main brake unit, the redundant brake unit, the second main brake unit, a front axle steer-by-wire system, an intelligent suspension system and an intelligent tire. The application can improve the chassis safety and fault-tolerant capability to support high-level automatic driving functions.

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

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

The invention relates to the technical field of vehicle braking, and discloses a drive-by-wire hybrid braking method and device, equipment and a medium. A braking instruction of a target vehicle is obtained, braking demand analysis is conducted according to the braking instruction, and braking demand torque is obtained; the target vehicle is at least provided with an energy recovery system, a front wheel hydraulic braking system and a rear wheel running and parking integrated system; when the target vehicle is in other working conditions, the braking demand torque is distributed to the energy recovery system or the energy recovery system and the front wheel hydraulic braking system; and when the target vehicle is in the preset braking working condition, the braking demand torque is distributed to the energy recovery system, the front wheel hydraulic braking system and the rear wheel running and parking integrated system according to the braking distribution proportion. The rear wheel running and parking integrated system has the beneficial effects that the rear wheel running and parking integrated system is used for replacing a hydraulic braking system, braking is carried out through cooperative work between the braking systems, the complexity of the braking systems is optimized on the basis of ensuring the braking safety of the vehicle, and the fault probability of the braking systems is reduced.

The utility model provides a novel rail unloading operation vehicle. A novel rail unloading operation vehicle comprises a hook buffer device, a handrail, a bogie, a boarding ladder, a steel rail traction device, an electrical system, a braking system, a rail unloading device, a welding machine storage platform, a guiding device, a rail shifting device, a vehicle frame and a cab. According to the novel rail unloading operation vehicle, steel rails are deformed to one side from the middle of the vehicle within allowable stress through the vehicle, fall into the center of the rail or the side of the rail through the guide device or directly fall into the rail bearing groove, and are matched with a rail welding vehicle and a rail transporting vehicle to complete transportation, welding and unloading of the long steel rails; the steel rail can pass through the lower part of the cab, so that a transverse displacement space is vacated for rail unloading operation; alignment with a welding machine of a rail welding vehicle is facilitated, the rail unloading position is flexible, and possibility is provided for integrated construction of rail overhaul; the steel rail is moved to the multiple rail unloading positions from the horizontal center position through the guide device, the variable site construction environment can be used, and convenience is provided for follow-up construction.

The invention discloses an automatic emergency braking system and method based on a graph neural network and retrieval enhancement generation. Comprises: a dangerous scene map construction module for extracting target spatial-temporal characteristics based on an accident video, marking on a high-precision map, and constructing a dangerous scene map; the GNN encoding module encodes the dangerous scene into an embedded vector and stores the embedded vector in a cloud vector database; the real-time positioning and retrieval module is used for calculating a retrieval radius and indexing and downloading nearby scene subsets; the real-time sensing module is used for generating a structured sensing data frame through time-space synchronization and multi-sensor fusion; the real-time GNN coding and similarity matching module is used for carrying out similarity matching on the coded current scene and the subset and calculating a safety evaluation coefficient; and the decision optimization module is used for triggering the active intervention strategy according to the priority based on the safety evaluation coefficient. According to the method, advanced perception and active avoidance of potential risks are realized by retrieving historical dangerous scene experience, and the driving safety in a complex scene is remarkably improved.

The application discloses a brake fluid filling and exhaust device and a control method and system thereof. The device comprises a liquid supplement tank, a liquid supplement pipeline, a liquid return pipeline, a first valve and a second valve. The liquid supplement tank is internally provided with a filter, the top of the tank body is provided with an exhaust port, one side of the tank body is connected with the liquid supplement pipeline, the liquid supplement pipeline is provided with the first valve, the other side of the tank body is connected with the liquid return pipeline, and the liquid return pipeline is provided with the second valve. When brake fluid is filled, the liquid supplement tank, the liquid supplement pipeline, a liquid storage pot, brake calipers and the liquid return pipeline are communicated to form a circulating passage of brake fluid, and when a stop-filling condition is met, the liquid storage pot stops filling brake fluid to the brake calipers, and the stop-filling condition at least comprises that gas in the brake system is exhausted. Through the technical scheme provided by the application, gas in brake fluid can be filtered, separated and exhausted from the exhaust port in the brake fluid circulation process, automatic filling and exhaust of brake fluid are realized, and the filling and exhaust efficiency of brake fluid is improved.

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

The disclosure relates to a leak detection system for a pneumatic braking system of a vehicle. The pneumatic braking system has a control unit, a pneumatic circuit, and an air tank configured to supply pneumatic pressure to the pneumatic circuit. The pneumatic circuit has a plurality of valves configured to be individually controlled by the control unit. The link detection system includes program code configured, when executed by a processor, to individually control the valves of the pneumatic circuit so as to isolate a sub-circuit of the pneumatic circuit. The leak detection module is configured to monitor a pressure in the pneumatic circuit for leaks, wherein the leak detection module detects a leak in the sub-circuit if the pressure decreases while the sub-circuit is isolated.

An electropneumatic ABS brake system is for a utility vehicle. The brake system has: a foot brake valve operable via a brake pedal and including pneumatic output channels, axle service brake circuits connected to the output channels and each having an axle valve unit and ABS valves for actuating wheel service brakes, a control unit for actuating the ABS valves and the axle valve units, and a first pressure sensor connected to one of the two pneumatic output channels and configured to measure the pneumatic control pressure output by the foot brake valve and to output a first pressure signal to the control unit. A second pressure sensor is provided separately from the first sensor and is configured to output a second pressure signal to the control unit, which receives the two pressure signals and actuates the ABS valves and / or the axle valve units as a function of the signals.

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

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

The invention discloses an electronic brake system of a fishing reel, and belongs to the technical field of fishing gears. The system comprises a side cover, an adjusting drive plate, a brake adjusting execution assembly, a supporting cover plate, a coil base, an electric control board and a wire cup assembly, wherein the electric control board integrates an optical detection module, a conductive detection module and a control unit; a stop block of the brake adjusting execution assembly and an adjusting drive plate move synchronously, a conducting circuit and a conducting contact can be selectively conducted through a conducting layer on the bottom face of the brake adjusting execution assembly, discrete electric signals identifying gears are output, meanwhile, the shielding degree of the stop block on an optical path of the optical detection module changes continuously, and continuous light sensation analog signals are formed. And the control unit locks the gear according to the discrete electric signal, and responds to the light sensation analog signal to realize stepless regulation of the braking force in the same gear. The device adopts dual-mode cooperative detection, has the characteristics of no mechanical wear, high precision and strong interference resistance, is compact in structure and controllable in cost, effectively improves the casting stability of the fishing reel and the user experience, and is suitable for various fishing reels with precise brake requirements.

A valve unit for an anti-lock braking system has a valve body, a piston, and an elastic element acting on the piston. The valve body has an outlet port, an inlet port, a primary chamber communicating with the outlet port, an expansion chamber with an outflow passage establishing fluid communication between the primary chamber and the expansion chamber, and a bypass passage between the inlet port and the outlet port. The piston is movable in the primary chamber and has a longitudinal through cavity, a first transversal surface facing the outlet port, and a second transversal surface facing away from the outlet port. The first transversal surface has an area smaller than the area of the second transversal surface. The elastic element exerts an elastic force to move the piston away from the outlet port. The valve unit is activatable by pressure of a brake fluid in the primary chamber.

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.

A vehicle may include a set of wheels, a propulsion system coupled to at least a subset of the set of wheels and configured to propel the vehicle, a steering system coupled to at least a subset of the set of wheels and configured to steer the vehicle, and a braking system configured to decelerate the vehicle. The vehicle may also include a light detection and ranging (LiDAR) emitter configured to emit light into an environment external to the vehicle and a LiDAR sensor configured to receive portions of the emitted light reflected by the environment, and a processing system configured to accept, as input, a LiDAR point cloud.

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

The utility model provides a high-rotating-speed fifth-shaft rotary table structure which comprises a shell, a first rotating shaft, a second rotating shaft, a third rotating shaft and a fourth rotating shaft. The main shaft is mounted on the four-point contact ball high-speed bearing; the driving motor is installed in the shell, a rotor of the driving motor is installed on the main shaft through a rotor connecting ring, and a stator of the driving motor is installed on the inner wall of the shell; a rear shaft is mounted at the tail part of the main shaft; an encoder rotor is mounted on the rear shaft, an encoder stator is arranged beside the encoder rotor, and the encoder stator is mounted on an encoder seat; and the encoder seat is also provided with a brake system. The high-rotating-speed fifth-axis rotary table structure is compact in structure, excellent in high-speed performance, high in sealing performance, fast in response, high in reliability and easy to maintain, can be widely applied to precision manufacturing equipment such as high-end numerical control machine tools and five-axis linkage machining centers, and has remarkable technical advantages and application prospects.

The invention relates to the technical field of hydraulic capstan, in particular to a hydraulic capstan for cableway laying and a method for achieving cableway laying through the hydraulic capstan. Lateral supporting frames are fixedly arranged on the front side and the rear side of the top of the machine connecting rack correspondingly. A first winch unit and a second winch unit are installed on the left side and the right side of the top of the connecting machine frame respectively, a driving unit is arranged between the first winch unit and the second winch unit, and the first winch unit and the second winch unit are matched to achieve winding of a steel wire rope. The two winch units are synchronously driven by the single driving unit, and a built-in braking system is matched, so that the problems of asynchronous driving and insufficient braking force of the traditional double winches are solved from the double dimensions of power transmission and braking guarantee, and the safety and stability of large-load cableway laying operation are greatly improved.

The utility model discloses a water drop reel magnetic brake system which comprises a brake bowl arranged on a winding wheel shaft, a magnet assembly arranged outside the brake bowl and an adjusting assembly for adjusting the radial distance between the magnet assembly and the brake bowl, and the brake bowl is arranged on one side of a winding wheel and rotates along with the winding wheel shaft. The adjusting assembly comprises a retarding cam and a retarding rotary knob driving the retarding cam to rotate, the retarding rotary knob is connected with the winding wheel cover, the magnet assembly comprises two magnet mounting seats and two arc-shaped magnets, the arc-shaped magnets are assembled on the magnet mounting seats, positioning columns are arranged on the magnet mounting seats, and the arc-shaped magnets are arranged on the positioning columns. The positioning column penetrates through a linear positioning groove formed in the winding wheel cover and then falls into a spiral groove in the retarding cam. The water drip wheel magnetic brake system has the advantages of being stable in brake force, large in brake force adjusting range, high in adjusting precision and the like.

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 discloses an active suspension control method, a vehicle controller and a vehicle, and belongs to the technical field of vehicles, when a driver steps on a brake pedal to brake the vehicle, target brake pressure can be calculated based on the trampled stroke of the brake pedal, at the moment, a brake system does not control a brake to brake, and the target brake pressure can be calculated based on the trampled stroke of the brake pedal. A front active force of a front suspension is adjusted to a target forward active force in an upward direction, a rear active force of a rear suspension is adjusted to a target rear active force in a downward direction, and the front suspension increases the target forward active force opposite to the sinking movement of the front side of the vehicle before a braking system applies a significant braking force to the vehicle. Meanwhile, the rear suspension increases target rear main power opposite to the lifting motion of the rear side of the vehicle, and resistance is provided for the upcoming forward inclination trend of the vehicle; when the braking system brakes the vehicle, the front side and the rear side of the vehicle are affected by the target front main power and the target rear main power respectively, the initial amplitude and the speed of forward inclination of the vehicle body are restrained, and the comfort of passengers in the vehicle is improved.

The invention discloses a steering-by-wire fault degradation processing method and system, a vehicle, equipment and a medium, and relates to the technical field of vehicle control. The steering-by-wire fault degradation processing method comprises the following steps that the fault state of a steering-by-wire system of a vehicle is obtained; according to the fault state of the steer-by-wire system, whether a braking system of the vehicle needs to provide steering capacity is judged; if the braking system needs to provide the steering capacity, the needed front wheel steering angle is determined according to the steering angle signal and the vehicle speed; four-wheel braking force needed by the vehicle is determined according to the needed front wheel rotation angle; and controlling the braking system to execute the braking force of each wheel according to the required four-wheel braking force so as to realize front wheel steering. Under the condition that the steer-by-wire system breaks down and loses part of or all steering capacity, extra steering capacity can be provided through four-wheel braking force distribution of the braking system, cross-system redundancy safety is achieved, and the safety of the steer-by-wire vehicle is improved.

An on-board electronics system of an aerial work platform moves the wheels between a retracted and extended position by pivoting a respective arm. The method comprises the following successive steps: a) orienting each wheel tangentially to the pivoting path of the corresponding arm, b) moving the wheel by pivotally actuating the corresponding arm, and c) reorienting the wheel so as to enable another translation of the aerial work platform. The steps are performed in different orders between the wheels so that at any time at least one of the following conditions is complied with: —the brake system of at least one wheel is active, —at least one wheel is rotated by a motorised drive, —the orientation of the wheels relative to one another prevents any translation of the aerial work platform (1) on the ground as a result of gravitational force.

The invention discloses a high-precision clamping force estimation method of an electronic mechanical braking system, and belongs to the technical field of automobile braking system control. The method comprises the following steps: acquiring real-time signals such as motor rotation angle, angular velocity and current, and acquiring a steady-state clamping force estimation value by using a seven-degree polynomial static model; then based on a motor angular speed judgment working condition, correcting a tightening force estimation value through an inertia and friction dynamic compensation model under a high-speed dynamic working condition to obtain a model output force; estimating unmodeled disturbances such as friction change and temperature excursion in real time through an extended state observer to obtain disturbance compensation force; and finally, obtaining a final clamping force estimated value by adopting working condition self-adaptive weighted fusion. According to the method, errors caused by factors such as friction change, temperature excursion and structure aging can be effectively reduced, and high-precision estimation of the clamping force is achieved.

The present invention discloses a chainless electrical bicycle, which is designed to eliminate any type of mechanical means to transfer torque and power from pedals to a traction wheel. The present invention employs a generator to transfer a pedal torque and power with the help of power electronics, control electronics, a battery and control methods to a motor that is used for traction, which is attached to the traction wheel. The generator power is supplemented with the battery power, wherein the battery is rechargeable. The main purpose of the present invention is to emulate a mechanical chain bicycle operation, eliminate shortcomings of a mechanical chain bicycle, and introduce convenience features, such as, but not limited to, continuously variable electronic gear, a gravity compensation, a static and dynamic torque assistance, a ride charge feature, and an electric brake system.

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

A control system for an agricultural baler includes a controller configured to receive a bale wrap signal indicative of a type of a bale wrap. The controller is also configured to determine whether the bale wrap is segmented or continuous based on the type. Furthermore, the controller is configured to control a braking system to establish a tension force at a weakened section of the bale wrap sufficient to separate a first portion disposed about a bale from a second portion disposed about a shaft in response to determining the bale wrap is segmented and the weakened section is positioned between the shaft and the bale. In addition, the controller is configured to control a cutting system of the agricultural baler to cut the bale wrap in response to determining the bale wrap is continuous and a target section of the bale wrap is positioned at the cutting system.