388results about How to "Effective braking" patented technology

A brake rotor and methods for cooling and / or removing debris from a brake rotor are provided. The brake rotor may include a first and second annular braking surfaces jointly defining inner and outer circumferential surfaces and a central portion and a hat portion disposed in the central portion and adapted for mounting the rotor to a vehicle. The rotor may also include a plurality of vanes provided between the inner and outer circumferential surfaces, which may define a plurality of corresponding flow channels between at least a pair of vanes. Each flow channel may include a first flow channel opening (e.g., inlet) provided near the central region and a second flow channel opening (e.g., outlet) provided near a periphery of the brake rotor. The rotor and methods also may include a plurality of first slots provided on the first annular braking surface and a plurality of second slots provided on the second annular braking surface corresponding to the plurality of first slots. At least one first opening may be included within one or more slots. Similarly, at least one second opening may be provided within each second slot. Each second opening of each second slot may correspond substantially to and fluid communicate with a first opening of a first slot.

A braking system for a personal watercraft includes at least one brake plate for mounting to the transom of a personal watercraft such that the jet nozzle of the watercraft is directionally adjustable independently of the braking system. The brake plate is alternatable between a nonbraking condition wherein the plate is retracted against the transom and is held completely above a lower edge of the transom, and a braking condition where the brake plate extends beyond the lower edge of the transom. A hand-controlled actuator assembly selectively alternates the brake plate between the braking and nonbraking conditions.

The invention relates to an unmanned aerial vehicle type automatic sampling system at fixed points of the water surface. The unmanned aerial vehicle type automatic sampling system comprises a water sampler, a lifting mechanism and a control circuit, wherein the water sampler comprises a barrel body and a periphery component, a large conical horn mouth is designed at the lower end of the barrel body, and an end cover exhaust device is arranged at the upper end of the barrel body; a buoyancy ring and a heavy ring are arranged at the outer side of the barrel body, the buoyancy ring is arranged at the lower end of an end cover, and the heavy ring is arranged at the lower end of the buoyancy ring; and a valve cover is arranged at the bottom of the inner side of the barrel body; the integrity is connected by a flying ring, the lifting mechanism is connected at the upper part of the flying ring, and is controlled by the control circuit. The lifting mechanism adopts a winding and distributing mechanism, the winding mechanism is composed of a power motor, a worm-gear speed reducer and a speed ratio guide wire wheel set, the speed ratio guide wire wheel set is connected with the flying ring by a connecting wire, the speed ratio guide wire wheel set is connected with the worm-gear speed reducer which is connected with the power motor; while the twisting force is increased, self locking can be achieved; and the system adopts the unmanned aerial vehicle system to realize sampling, the traditional manual sampling mode can be replaced completely, and rapid, intelligent and high-efficiency water sampling can be achieved.

An external surface of a spindle is formed with tapering grooves which become narrower in a direction towards the forward end of the spindle. A slider sleeve is provided with splines which also taper in a forward direction. In this way, the slider sleeve is prevented from rotating relative to the spindle, but can slide axially. A rearward end of the slider sleeve includes a recess containing an elastomeric O-ring. When the drive torque exceeds a predetermined threshold, inclined surfaces of the mutually engaging teeth on the spindle drive gear and slider sleeve slide over each other, as a result of which the drive gear slides forwardly along the slider sleeve against the action of a spring. The spindle drive gear can then rotate relative to the slider sleeve and the cooperating sets of teeth ratchet over each other, preventing spindle drive gear being from rotating the spindle.

A vehicle includes a combined wet brake and rear gear assembly supported by a pair of frames. The combined wet brake and rear gear assembly includes a housing having at least one gear and a wet brake provided therein. An input shaft is connected to the gear and to the engine of the vehicle. The wet brake is located between one of the pairs of frames and the input shaft in the transverse direction of the vehicle in a top plan view.

An automatically retracting chalk line dispenser having a first and second casing elements, chalk line, reel, coil spring, and thumb-lever. The thumb-lever operates as a brake thereby allowing for either controlled retraction or an effective lock on the chalk line.

An aircraft engine assembly including a turbojet, a turbojet attachment pylon, and a nacelle mounted on the attachment pylon and surrounding the turbojet. The nacelle includes at least one mobile nacelle portion forming a single piece envelope all around a section of the turbojet, this mobile nacelle portion being mounted free to slide on the attachment pylon so that it can be moved from the forward position in the aft direction, and vice versa.

An intake controller installed in a diesel engine, wherein the control part of a valve controller fully opens a bypass valve in a bypass passage when it determines that the operating state of the diesel engine is suddenly decelerated from a middle and high speed and middle and high load range. Accordingly, the control part can feed an intake air from the outlet passage side of a compressor to the inlet passage side of an exhaust turbine, and can rapidly lower the rotational speed of an exhaust turbine supercharger (20) which tends to be rotated at a high speed by inertia. As a result, since the operating state not enter a surging area while an operating point is moving, surging can be securely avoided.

The invention relates to an automobile brake pedal mechanism and a pedal feel simulator thereof. The brake pedal mechanism comprises a brake pedal, a pedal displacement sensor, the pedal feel simulator, a microwave distance-measuring radar, a central processing unit and the like, wherein the pedal displacement sensor adopts two variable resistors for identifying the brake intention of a driver; the pedal feel simulator is based on a magnetorheological fluid principle; the central processing unit can controls the voltage volume of a coil and adjusts the damp of the simulator according to the pedal speed or distance information of front vehicles, people or barriers provided by the microwave distance-measuring radar, so that the driver has excellent operation feel, and the stability, comfortand safety of brake can be improved. Meanwhile, by changing the set value in the central processing unit, the damp output curve of the pedal feel simulator can be adjusted to meet requirements of different vehicle models or drivers. The automobile brake pedal mechanism and the pedal feel simulator thereof have the advantages of simple structure, quick response, good adaptability and the like, andis convenient in operation,.

An inner tub of a washing machine is rapidly braked during a portion of a deceleration phase following an extraction phase of an overall spin cycle. A controller establishes the braking operation over a critical speed band or resonant frequency zone during which excessive vibrations would be developed. The critical speed band is preferably determined based on one or more signals received from speed, load, and / or out-of-balance sensors.

To provide a braking device for a vehicle, which is capable of switching properly between single braking for one of front and rear wheels and combined braking with CBS according to the driving conditions of the vehicle, and of thereby achieving the balance between active vehicle controllability based on a driver's intention and braking performance. Brake systems respectively for the front and rear wheels are provided so that brake caliper assemblies respectively for the front and rear wheels can be operated independently of each other with brake operating sections exclusively for the brake caliper assemblies for the front and rear wheels, respectively. The brake system for the front wheel is provided with a hydraulic pressure modulator capable of feeding a braking force to the brake caliper assembly for the front wheel. When a rear wheel slip ratio exceeds a threshold value under rear brake operation, a controller activates the hydraulic pressure modulator for the front wheel to start braking the front wheel.

Disclosed is a fuzzy adaptive pictorial information digitizer (PID) control method of a motor train unit based on multi-model switch. According to the method, a data driving modeling method is proposed according to collected running process data of the motor train unit and field experience knowledge, the number of braking models is determined by means of subtraction cluster, and then a plurality of partial linear models describing a braking process of the motor train unit are established. The partial linear models adopt the recursive least-squares method to identify model parameters. At each sampling moment, an optimal partial model is selected based on the multi-model switch strategy, and the fuzzy adaptive PID control algorithm is adopted to control the braking process of the motor train unit, and therefore safe, punctual and effective running of the motor train unit is achieved. The multi-model adaptive PID control of the braking process of the motor train unit is simple, practical, capable of achieve multi-purpose control of the braking process of the motor train unit, and suitable for on-line monitoring and automatic control of the braking process of the motor training unit.

The invention discloses a vehicle-mounted terminal, and a method and a system for the remote control of vehicle braking, which are used for solving the problem of large potential safety hazards causedby the fact that the prior art cannot effectively control a vehicle in time. The technical scheme comprises the following steps: acquiring the current state of an appointed vehicle by a network side;when the vehicle is determined to accord with a default immediate braking condition according to the current state, indicating the vehicle-mounted terminal on the vehicle to control the vehicle to bebraked immediately; otherwise, indicating the vehicle-mounted terminal on the vehicle to control the vehicle to reduce the speed. Through the technical scheme, the vehicle can be controlled to brakeeffectively in time, various safety risks for the reason that the vehicle cannot be stopped in time are reduced, the problems of vehicle bumper-to-bumper rear-end collisions, traffic jams and the likecaused by improper time for braking the vehicle immediately are reduced, and the safety is high.

An aircraft engine assembly including a turbojet, a turbojet attachment pylon, and a nacelle mounted on the attachment pylon and surrounding the turbojet. The nacelle includes at least one mobile nacelle portion forming a single piece envelope all around a section of the turbojet, this mobile nacelle portion being mounted free to slide on the attachment pylon so that it can be moved from the forward position in the aft direction, and vice versa.

A bin comprising a vessel and a pivoting lid that can be moved between an open position and a closed position. The lid and the vessel are arranged in such a manner that the air leaving the vessel during closure of the lid and when the lid is close to its closed position is forced to turn at least twice, being forced to pass between substantially vertical surfaces belonging respectively to the lid and to the vessel, at least at the front of the lid, preferably at least at the front of the lid and on both sides therefore, and more preferably still all round the four edges of the lid, so as to encourage the creation of raised pressure inside the vessel, which raised pressure tends to brake the displacement of the lid towards its closed position.

A system and method are provided whereby at least two motors driven by an inverter coupled to a DC bus are configured to alternate between regenerative and injection braking such that at least one motor is placed in regenerative braking mode and at least one motor is placed in motoring mode. Energy is simultaneously placed on and removed from the DC bus in a manner allowing a large current to flow in as many motors as possible, for fast stoppage of load inertia. At least one motor may be placed in regenerative braking mode and at least one motor in DC injection mode, such that energy is simultaneously placed onto and removed from the DC bus, respectively. Further, a single motor may be is alternated between regenerative braking and DC injection braking, such that energy is alternately placed onto and removed from the DC bus, respectively.

A device for braking the fall of a load, the device having a flexible fabric structure with a central hub connected to at least two radial blades adapted to impart rotary motion to the structure, thereby generating lift, and suspension rigging connecting the flexible fabric structure to the load beneath it.

A brake for the traction cable of elevator has a trigger mechanism, which is composed of an impact module, an electromagnetic module, a connecting string module, and a bearing module. The pull plate on bearing module is pressed by said impact module via impact spring. Said pull plate is connected with electromagnetic module and is moving toward one end under the action of electromagnetic module to implement impact. A restoring spring can restore the pull plate to original position.

A motorized valve has a hollow case having an input and output tubes, a saddle connected with the hollow case, a turn plug cooperating with the saddle, and a piezoelectric drive to turn the turn plug, the piezoelectric drive including a piezoelectric generator of radially directed standing acoustic waves, which is connected with the hollow case and is connectable with a pulse current source, and a rotor operatively connected with the piezoelectric generator and kinematically connected with the turn plug so as to turn the turn plug when the rotor is actuated by the piezoelectric generator.

The invention discloses an electromagnetic evacuated ultraspeed railway system. The electromagnetic evacuated ultraspeed railway system comprises a housing and at least one transporting line which isarranged in the housing; the transporting line comprises an evacuated transportation tube and a train which is positioned in the evacuated transportation tube; and active collision avoidance devices are arranged between compartments of the train and the train head and the compartments. An external electromagnetic propulsion layer is arranged on the internal wall of the evacuated transportation tube; an internal electromagnetic propulsion layer is arranged on the external wall of the train; when the train penetrates through the evacuated transportation tube, homopolar magnetism pushes the trainto advance; and meanwhile, a power generation closed lead configured for the train cuts a magnetic induction line of the external electromagnetic propulsion layer to generate electric energy needed by running. The electromagnetic evacuated ultra-speed railway system is a people and object carrying integrated transportation system with a certain power generation capacity; and according to the electromagnetic evacuated ultra-speed railway system, requirements on external power supply are extremely low; under a mutual effect of an electromagnetic tube and an evacuated environment, the train running speed is highest, the energy consumption is lowest, no fear of influence from any weather is realized, the cost is lowest, and the input-output ratio is highest.

A brake assembly including a brake pad; a selectively movable rotor, a backing plate which is coupled to the brake pad, at least a first roller which is coupled to the backing plate, a caliper, at least a second roller which is coupled to the caliper, a wedge member which is positioned between and which engages the at least first and the at least second roller, and a motor which is coupled to the wedge member and which selectively moves the wedge member, effective to brake a selectively movable assembly.

The invention provides an electrically powered wheelchair brake control system which is suitable for the technical field of wheelchairs. The electrically powered wheelchair brake control system comprises a signal detection module, a forward control module, a reverse control module and a motor driving module, wherein the signal detection module is used for detecting shifting force and a loosening state of a controller and transmitting a force signal; the controller is connected with a first loop circuit, a second loop circuit and the signal detection module through a control chip, the first loop circuit is used for controlling output of a forward voltage signal, and the second loop circuit is used for controlling output of a reverse voltage signal; the forward control module is used for outputting a high level as a control signal for forward rotation according to the force signal; the reverse control module is used for outputting a low level as a control signal for reverse rotation when the controller is loosened or is shifted; the motor driving module is used for driving a motor to perform forward rotation or reverse rotation. The invention further provides an electrically powered wheelchair. Therefore, the brake is more efficient, and certain sliding distance after braking is shortened.

An intelligent, on-board, train brake safety monitoring and fault action system is disclosed. The system compares measured dynamic train brake performance using on-board train control system, such as a LEADER® system. Using the measured dynamic train brake performance, the brake monitoring system can determine whether the train is capable of stopping within a particular required distance, such as a stop distance set by a positive train control system in which the train is participating. The ongoing ability to meet external braking criteria, such as compliance with positive train control stop distances, may be used to extend the interval between any mandated train brake inspections and tests.

The invention relates to the field of safety of elevators, in particular to an elevator safety clamp. The elevator safety clamp comprises a bracket, an upper clamp body, a lower clamp body and a pull rod; the bracket includes an upper clamp body cavity and a lower clamp body cavity connected up and down; the upper clamp body is arranged in the upper clamp body cavity, and includes an upper fixed wedge and an upper movable wedge arranged from outside to inside; a first transverse hole is formed in the lower part of the upper movable wedge; the lower clamp body is arranged in the lower clamp body cavity, and includes a lower fixed wedge and a lower movable wedge arranged from outside to inside; a second transverse hole is formed in the lower movable wedge; and the pull rod includes an upper pull rod and a lower pull rod.

Some embodiments of the present invention provide a system comprising: a first controller operable to assume one of a plurality of respective states, in a first state the first controller being configured to generate a first controller powertrain signal in order to cause a powertrain to develop drive torque, and a first controller brake signal in order to cause application of a brake to one or more wheels, the first controller being configured to generate the first controller powertrain signal and first controller brake signal to cause a vehicle to operate in accordance with the target speed value, wherein when the first controller is in a predetermined one or more states the first controller is configured automatically to perform a brake wipe operation in which the first controller generates the first controller brake signal in dependence on one or more predetermined conditions whilst continuing to cause a vehicle to operate in accordance with the target speed value.

An electronic brake system and a method for operating the same are disclosed. The electronic brake system includes a hydraulic-pressure supply device and a hydraulic-pressure control unit. The hydraulic-pressure supply device operates a hydraulic piston using an electric signal corresponding to a displacement of a brake pedal, and thus generates hydraulic pressure. The hydraulic-pressure control unit controls hydraulic pressure of a pressure medium supplied to individual wheel cylinders. The electronic brake system controls a plurality of valves mounted to the hydraulic-pressure control unit, and thus performs a normal operation mode, an abnormal operation mode, a regenerative braking mode, and an inspection mode using the valves.

There is provided a retarder control device which is simple in constitution and can reliably apply braking. An engine rotational speed detector detects an engine rotational speed, gear step detection means detects a gear step of a transmission, an accelerator operation detector detects the operated state of an accelerator, and a retarder controller previously stores automatic braking amount determination data representing the relation between the engine rotational speed and the automatic braking amount of a retarder corresponding to each gear step of the transmission and controls the retarder according to the automatic braking amount of the retarder calculated from the automatic braking amount determination data based on the detected engine rotational speed and gear step of the transmission when the accelerator is judged to be off from the detected operated state of the accelerator.

The invention discloses an electric-pneumatic composite braking control method for a train. The train is divided into a plurality of bullet train trailer units, and electric-pneumatic composite braking is performed in each bullet train trailer unit; a traction control unit and a brake control unit are arranged on the bullet train trailer unit; the control method comprises the following steps thatS1, the traction control unit and the brake control unit receive a brake instruction and a brake level signal; S2, the traction control unit calculates an electric braking force theoretical value Fe0and executes electric braking force; the brake control unit calculates the unit brake requirement Fu, the bullet train brake requirement Fd and the trailer brake requirement Ft; S3, the traction control unit determines an electric braking force feedback value Fe, and sends the electric braking force feedback value Fe and an electric braking effective signal to the brake control unit; S4, the brakecontrol unit calculates the air brake supplementing amount of the bullet train and the trailer and executes air brake; signal delay is effectively reduced, the real-time performance of electric-pneumatic composite braking is enhanced, and the response speed of electric-pneumatic braking is increased.

The invention discloses a right-turning intelligent vehicle two-stage braking active collision avoidance system based on a collision time, and the collision avoidance system comprises the following parts: an information sensing system which is used for detecting the information of a target vehicle and the state information of a pedestrian, and outputting the information of the target vehicle and the state information of the pedestrian; a collision time calculation system that is used for receiving the target vehicle information and the pedestrian state information, classifying collision conditions, calculating collision time and outputting the collision time; and a two-stage braking active collision avoidance system that is used for receiving the collision time and executing collision avoidance after performing grade judgment. The invention discloses a right-turning intelligent vehicle two-stage braking active collision avoidance method based on the collision time.