Abstract: A control device for a braking system of a vehicle is provided, having a first receiving device which receives a provided brake activation intensity variable, a plunger control device which determines a setpoint fill level variable of a plunger, taking into account at least the received brake activation intensity variable, and a corresponding plunger control signal is outputtable so that a ratio of an actual volume and a maximum fillable volume of a storage volume of the plunger is settable corresponding to the determined setpoint fill level variable. For a brake activation intensity variable corresponding to a predefined non-activation intensity variable, the plunger control device determines a fill level variable different from an empty state as the setpoint fill level variable, and outputs a plunger control signal corresponding to the determined setpoint fill level variable to the plunger such that the plunger is at least partially filled.

Abstract: An electric braking system is provided for a road vehicle that includes at least two wheels (1) each connected for rotation to at least one rotary electric machine (2), and one electronic wheel control module (23) controlling an electric machine of a corresponding wheel, with each electronic control module enabling a control torque of determined amplitude and sign to be imparted selectively to a corresponding wheel. The electric braking system includes at least two sub-systems (A and B) each including: at least one of the electronic wheel control modules (23), a central electric line (40), and a low-voltage electrical supply stage for supplying electronics for controlling and driving power elements. The low-voltage electrical supply stage includes a first low-voltage electrical supply and at least one second low-voltage electrical supply.

Abstract: Methods and systems are provided to reduce a hard brake pedal feel. A brake control variable is adjusted in anticipation of a hard pedal condition to increase hydraulic brake line pressure and maintain a normal pedal feel. A pedal force is inferred from brake line pressure relative to brake booster vacuum.

Abstract: An electronic control unit for a brake control apparatus has a pressure-command-signal memorizing portion, which outputs a pressure command signal to a brake force control unit, when a braking operation is not carried out by a vehicle driver, in order to gradually increase brake fluid pressure. The memorizing portion memorizes the pressure command signal as a gap-zero pressure signal sent to the brake force control unit when vehicle deceleration exceeds a predetermined value. A pre-charge control portion outputs the gap-zero pressure signal to carry out a pre-charge control, when the braking operation is not carried out, so that a gap between a friction element and a non-friction element is reduced to a desired amount before an actual braking operation by the vehicle driver.

Abstract: Provided is an electric brake capable of accurately estimating the brake pad temperature and securing a sufficient braking force and response. An electric brake has a disc rotor rotating with a wheel, an actuator for rectilinearly actuating a piston in the axial direction of the disc rotor by using an electric motor, a drive controller for controlling the drive of the actuator, a brake pad pressed by the piston to give a frictional resistance to the disc rotor in the direction of rotation, and a braking start position detector for detecting a braking start position of the piston where the disc rotor is brought into contact with the brake pad. The drive controller stores the braking start position detected by the braking start position detector as the maximum braking start position. When the braking start position shifts in the pressing force-increasing direction, the drive controller updates the value stored as the maximum braking-start position.

Abstract: An auxiliary braking system and method of controlling the braking a towed vehicle is provided that includes a remote control that is in selective communication with an auxiliary braking unit positioned in a towing vehicle. More specifically, it is often desirable for the operator of the towing vehicle to assess the performance of the auxiliary braking apparatus positioned in a towed vehicle. In addition, it is often advantageous for the operator to perform real time adjustments to the performance parameters of the auxiliary braking apparatus positioned in the towing vehicle without having to cease driving and physically access the auxiliary braking device.

Abstract: A brake system includes a main brake cylinder and a pedal decoupling unit provided with a holding piston, the first ring surface thereof together with a first primary brake cylinder piston defining a first hydraulic chamber that is hydraulically pressurized with an electrically controllable pressure supply device. In order to improve the pedal characteristics of the brake system, in particular in a brake-by-wire brake system, the holding piston is embodied as a differential piston, the second ring surface thereof defining a second, blockable hydraulic chamber, and a piston effect in the second chamber corresponds to a force that acts counter to the direction of actuation on the holding piston.

Abstract: A disc brake apparatus including a disc brake having a parking brake mechanism operated by an electric motor as a drive source to mechanically hold a piston in a braking position even after the hydraulic pressure is released; and a controller for supplying a predetermined amount of hydraulic pressure from a hydraulic control unit to caliper caliper, based on a parking-brake indicating signal from a parking brake switch and for operating the parking brake mechanism. In a case in which a brake pedal is being operated when a parking-brake indicating signal is input, the parking brake mechanism is operated in a state in which a hydraulic pressure in the caliper is at a predetermined pressure, after the operation of the brake pedal is finished, so as to reduce a hydraulic pressure required for a release of a brake pedal.

Abstract: A method of braking a vehicle which includes ground engaging wheels, and a braking system with ABS capability and including an operator actuated brake control, the ABS becoming operative in response to the operator actuating the brake control, and upon the braking system sensing the slippage or impending slippage of at least one of the ground wheels relative to the ground, to vary the braking force applied to the at least one of the wheels between, in alternative periods, an applied state in which the braking force is applied, and a released state in which the braking force is released, and characterised in that the method includes applying torque to assist acceleration of the wheel at least during periods in which the braking force is released by the ABS.

Abstract: The invention relates to a method in which the driving stability of a vehicle is controlled, wherein a yaw rate difference is influenced by an additional yaw moment which is generated at least partially by building up braking torque independently of the driver at one or more wheels. According to the invention, the braking torque which influences the additional yaw moment is variably apportioned between the front axle and the rear axle of the vehicle in an oversteering situation.

Abstract: Systems and methods disclosed herein may be useful emergency braking systems for use in, for example, an aircraft. A system is disclosed that allows emergency braking without the need for a manually operated emergency brake. For example, a system is provided comprising a potentiometer in mechanical communication with a brake pedal, a first electronic switch in electrical communication with the potentiometer, a second electronic switch indicating a displacement of the brake pedal, wherein a brake control valve opens in response to the first electronic switch, and wherein a shutoff valve opens in response to the second electronic switch.

Abstract: An electric autobrake interlock system for an aircraft includes an autobrake power interlock mechanism that prevents inadvertent (uncommanded) application of brakes. The autobrake power interlock removes operating power from the brake actuators whenever the autobrake actuation data does not indicate a legitimate autobrake application condition. The interlock processing occurs in parallel with the autobrake command processing such that even if an inadvertent autobrake command is generated, the brake actuators will be unable to act upon the inadvertent autobrake command. In this regard, the brake actuators are unable to apply brakes automatically unless the following two actions happen concurrently: the operating power is provided to enable the electric brake actuators and autobrake actuation control is commanded in response to the legitimate autobrake application condition.

Abstract: A vehicle behavior control device (S) determines, by using a vehicle velocity (V), a transmission function (K(s)) which is determined based on a specification of the vehicle, receives as an input a wheel turning speed (?) obtained by differentiating a wheel turning angle (?) of left and right front wheels (FW1, FW2) with respect to time, and outputs a target yaw moment (My). The device (S) also calculates, by using the determined target yaw moment (My), a left-wheel-side forward/backward force (FxCL) imparted to a left wheel side (left front wheel FW1 and left rear wheel RW1) of a vehicle (10) and a right-wheel-side forward/backward force (FxCR) imparted to a right wheel side (right front wheel FW2 and right rear wheel RW2) of the vehicle (10).

Abstract: A system configured to estimate a change in temperature of a brake component of a vehicle brake during a braking operation. The system includes a weight estimation module for estimating a weight of a vehicle to which a brake is fitted, a volume estimation module for estimating a volume of a brake component, a temperature model module for calculating a change in temperature during brake application based on a relationship between the weight of the vehicle as estimated by the weight estimation module, the volume of the brake component as estimated by the volume estimation module, the deceleration of the vehicle, and further constants of the vehicle and/or the brake.

Abstract: A brake system in an electric drive dump truck. The electric drive dump truck has a generator 11 driven by an engine 10 and traveling motors 13L, 13R driven with electric power generated by the generator 11. Hydraulic brakes 20L, 20R, 21L, 20R are operated by brake pedal 18. An oil pressure sensor 22 detects hydraulic fluid pressure produced in accordance with the amount of depression of the brake pedal 18 and a control unit 14 controls the traveling motors 13L, 13R so as to operate them as generator-type retarders when the hydraulic fluid pressure P detected by the oil pressure sensor 22 is not smaller than a predetermined value P1.

Abstract: An electric parking brake control apparatus includes: an electric parking brake actuator that pulls cables connected to respective parking brake units of wheels; a brake actuator that controls braking pressures applied to the wheels by service brakes; a pressure-increase control unit that controls the brake actuator to increase the braking pressures to a predetermined value, when a tension of the cables falls below a predetermined target tension after the cables are pulled until the target tension is achieved; and a tension-increase control unit that controls the electric parking brake actuator to pull the cables until the tension of the cables exceeds the target tension, after the brake pressures are increased by the pressure-increase control unit.

Abstract: A brake system for an automotive vehicle includes a controller for operating friction and powertrain braking subsystems so that hydraulic pressure to the friction brakes is minimized during powertrain braking, while at the same time emulating the driver-interface operating characteristics of a pure friction-braking system during all operating conditions.

Abstract: A brake system, and a method for operating a brake system of a vehicle. To reduce a braking force, brake fluid is able to be discharged from the braking device via a cross-section adjusting member which connects a delivery deice to the braking device, in a controlled and/or regulated manner, into an intermediate reservoir and is delivered to the main brake cylinder using the delivery device. The discharge of the brake fluid from the braking device of the brake system takes place, at least at times, at a discharge volume flow that is greater than the maximum delivery volume flow of the delivery device, and when a certain operating state of the braking system occurs, the discharge volume flow is reduced.

Abstract: A “brake-by wire” brake system for motor vehicles, with a brake master cylinder which can be actuated by a brake pedal and has a housing and a piston, which is arranged displaceably in the housing and, together with the housing, delimits a pressure space. The piston of the brake master cylinder is designed as a stepped piston with at least two hydraulic active surfaces A1, A2 of differing size, wherein a first, small active surface A1 is assigned to the pressure space, and a second, large active surface A2 is assigned to a filling space, and, after a closing travel has been overcome, the second, large hydraulic active surface A2 is effective and the active surface A2, A1 are switched over in dependence on a hydraulic pressure in the pressure space and on the pedal force, respectively.

Abstract: A circuit arrangement for switching two backup valves in a rear axle module of an electronic brake system of a utility vehicle is provided, in which the circuit arrangement includes a switch at which pulse width modulation for controlling magnetic fields of inductors of the two backup valves is applied, and a diode for a slow discharge of the two backup valves in correlation with a predetermined operating state of the two backup valves, in which the diode is connected in parallel with two branches, each containing an inductor of the two backup valves, of the circuit arrangement, and in which the diode switches the two backup valves simultaneously in correlation with the predetermined operating state.

Abstract: A braking system having a master cylinder to which wheel brake circuits (I, II) can be connected, a first piston coupled to a brake pedal, a second piston by means of which the master cylinder is actuated, a third piston actuated by the first piston and connected in a force transmitting fashion to the second piston, a simulation device which gives the driver of the vehicle a pedal sensation, an intermediate space between the second piston and third piston, a pressure generating device which controls the pressure in the intermediate space, a pressure medium reservoir vessel which is under atmospheric pressure and which can be connected hydraulically to the intermediate space, and means for electrically controlling the pressure in the intermediate space.

Abstract: In a brake control system, a power supply portion supplies a voltage to a plurality of actuators. When a first actuator is supplied with a voltage equal to or higher than a first minimum operating voltage from the power supply portion, the first actuator operates to perform a first function. When a second actuator is supplied with a voltage equal to or higher than a second minimum operating voltage from the power supply portion, the second actuator performs a second function. The first minimum operating voltage and the second minimum operating voltage are set to be different from each other by a predetermined value so that the first actuator and the second actuator stop operating in a predetermined sequence with a decrease in the supplied voltage.

Abstract: A control system for an electromechanical-braking system provided with actuator elements configured to actuate braking elements for exerting a braking action has a control stage for controlling the braking action on the basis of a braking reference signal. The control stage comprises a model-based predictive control block, in particular of a generalized predictive self-adaptive control type, operating on the basis of a control quantity representing the braking action. The control system further has: a model-identification stage, which determines parameters identifying a transfer function of the electromechanical-braking system; and a regulation stage, which determines an optimal value of endogenous parameters of the control system on the basis of the value of the identifying parameters.

Abstract: When a brake force is generated by a service brake in accordance with the depression of a brake pedal by a driver, a brake force generated by an electric parking brake is reduced when lock control is performed, taking the brake force generated by the service brake into consideration. More specifically, a target motor current value increase amount is corrected such that as the brake force generated by the service brake becomes larger, the target motor current value increase amount becomes smaller. Thus, when brake force is generated by the electric parking brake and the service brake compensates for the brake force, it is possible to inhibit generation of a brake force larger than necessary.

Abstract: A valve unit for an electro-pneumatic brake control device for controlling a parking brake of a vehicle includes at least one air-quantity-boosting valve device for aerating and venting at least one spring brake cylinder of the parking brake and at least one electrically actuatable control valve for controlling the air-quantity-boosting valve device. To simplify the construction of the brake control device, the air-quantity-boosting valve device and the control valve are integrated in a common integral valve block.

Abstract: The present disclosure relates to various computer-implemented methods of line-locking a hydraulic vehicle braking system. A method includes performing a preliminary system check and controlling the distribution of fluid between a hydraulic module and an individual wheel-end brake component when the preliminary check is satisfied. The system continues to monitor predetermined vehicle inputs during activation.

Abstract: An annular seal member includes: an annular base part; and a seal edge, which is provided on both end faces of the annular base part to protrude in opposite directions, wherein the seal edge is configured to closely contact with a opposing face of a seal target such that an inner periphery side of the base part and an outer periphery side of the base part are fluid-tightly partitioned, wherein a plurality of the seal edges is provided in parallel with each other in at least one area of the base part, and wherein the number of the seal edges in the at least one area of the base part is larger than the number of the seal edges in the other area of the base part.

Abstract: A system for controlling a brake force of a vehicle. In one embodiment, the system includes an electronic control unit including a controller, a plurality of sensors in electronic communication with the controller. Each of the sensors transmits sensor data to the controller. A user interface and a driver recognition system are in electronic communication with the controller, and a computer readable memory stores instructions executed by the controller. The instructions cause the controller to evaluate a driver identification data received from the driver recognition system, a driver preference data received from the user interface, and the sensor data received from the sensors.

Abstract: The invention relates to a method of controlling a vehicle brake that is adapted to exert a braking force in response to an actuation setpoint, the method comprising the following steps: from a braking setpoint, determining a nominal actuation setpoint for the brake actuator, taking account of all of the components of the braking setpoint; from the same braking setpoint, and from a measurement of the torque developed by the brake, determining a correction for the nominal actuation setpoint, this correction taking account only of low-frequency variations in the braking setpoint; and adding the correction to the nominal setpoint.

Abstract: In a method for controlling a selector valve situated in a hydraulic brake system of a motor vehicle, the selector valve is opened by applying an electrical signal having various control phases having different current intensities. The thermal load and the noise of the valve are significantly improved if the lengths of the control phases for the pilot stage or the holding phases are variably adapted to the driving situation.

Abstract: In a method for displacing and storing brake fluid for a hydraulic brake system of a vehicle which brake system has at least one hydraulic accumulator, at least one brake booster and at least one brake circuit, the brake booster is configured in such a manner, that even without an action of the driver, actuation of the brake booster allows a volume of brake fluid to be automatically displaced. The brake fluid is displaced into the hydraulic accumulator and stored, by automatic actuation of the brake booster, and at least a portion of the stored brake fluid is emptied by the hydraulic accumulator into the brake circuit as a function of the operating state of the brake system.

Abstract: In an electric braking device that produces brake fluid pressure by driving a second slave piston in the axial direction with the driving force by a motor, a driving force transmission mechanism for transferring the driving force by the motor includes a nut that rotates upon reception of the rotational driving force by the motor, and a ball screw shaft which is engaged with the nut and is movable in the axial direction and which abuts the second slave piston. The electric braking device further includes a worn-out reducer for reducing the worn-out of a contact part between the ball screw shaft and the second slave piston.

Abstract: A control unit for a rail vehicle, comprising a braking control unit that contains an electronic braking control device for emitting control commands to brake actuators and/or comprising an anti-skid device, which controls the wheel slip of the wheels of at least one axle in accordance with at least one rotational speed signal from an anti-skid sensor. The control unit also comprises a roll monitoring unit with an electronic roll monitoring control device and at least one roll monitoring sensor for detecting the rotational speed of at least some wheels in the form of a rotational speed signal, and comprises a rolling gear monitoring unit for monitoring and/or diagnosing critical conditions of and damage to the rolling gear. The monitoring unit comprises an electronic control device for monitoring the rolling gear.

Abstract: To improve brake force in front and rear combined brake control, a brake control device includes a front wheel brake caliper having at least two front wheel cylinders, and a rear wheel brake caliper having a rear wheel cylinder. A front wheel brake conduit is disposed between a front wheel master cylinder and one of the front wheel cylinders, and a rear wheel brake conduit is disposed between a rear wheel master cylinder and the rear wheel cylinder. A pressure amplification conduit branches from a first position in the rear wheel brake conduit and merges with the rear wheel brake conduit at a second position downstream of the first position. A combined brake conduit branches from a third position in the rear wheel brake conduit positioned downstream of the first position and is coupled to the other of the front wheel cylinders. A first switch control valve is disposed between the first position and the third position in the rear wheel brake conduit.

Abstract: A fully electrically controlled electric braking system is provided for a road vehicle fitted with wheels (1). Each of the wheels is connected for rotation to at least one rotary electric machine (2) specific thereto, with at least one electronic wheel control module (23) controlling the electric machine(s) (2) of that wheel. Each electronic wheel control module (23) makes it possible to impart selectively to a corresponding wheel a control torque of determined amplitude and sign, in such a way that the corresponding wheel imparts to the vehicle a drive force or a braking force in accordance with the control torque. The system includes a central unit (3) for managing vehicle displacement, the central unit (3) controlling all the electronic wheel control modules (23). The central unit (3) has a vehicle braking mode activated by a vehicle braking control signal having a given amplitude representing a total desired braking force for the fully electrically controlled wheels.

Abstract: An electric braking apparatus which first moves a piston in a detaching direction or passes a current to move the piston in the detaching direction in order to detect a pad contacting position. Furthermore, while the piston moves in the detaching direction, pad non-contact judgment is performed. After a pad non-contact state is confirmed, the piston is moved in a pressing direction to detect the pad contacting position. When the piston does not move in the detaching direction, it is judged that a parking brake has an ON-state, and it is waited until a host system instructs parking brake release.

Abstract: A control system for use in a vehicle having left and right clutch assemblies, each clutch assembly including a brake mechanism and a drive mechanism. The control system includes a steering switch having a left steering position to actuate the left brake mechanism and the right drive mechanism, a neutral steering position to actuate the left and right drive mechanisms, and a right steering position to actuate the left drive mechanism and the right brake mechanism. The system may also include an operator switch having a first position to actuate brake mechanisms and disable the steering switch, and a second position that passes control of both brake clutch assemblies to the steering switch. The system may further include a brake switch having a brake position that actuates both brake mechanisms and disables the operator switch and the steering switch, and a drive position that passes control of both clutch assemblies to the operator switch.

Abstract: A vehicle air braking system having a source of fluid under pressure (1), an air dryer (A) downstream of the source (1), and an air consumer circuit (2) downstream of the air dryer (A), the system being operable to suspend the source (1) on demand to permit backflow of air under pressure from the air consumer circuit (2) through the air dryer (A) to a drain valve (B), the system including a regeneration valve (D), and a command valve (C) having an inlet connected to the air consumer circuit (2), and a supply outlet operably connected to the drain valve (B), wherein the regeneration valve (D) is operable to permit regeneration backflow in response to connection of the inlet and supply outlets of the command valve (C).

Abstract: A method for controlling a vehicle drive unit, which comprises at least two individual drives, at least one of which is able to provide a negative torque. A vehicle control unit is provided, within which a continuous torque comparison is performed within a monitoring level. A permissible torque is ascertained therein. Using a torque range checker it is established whether ascertained setpoint torques lie within torque ranges of the at least two individual drives.

Abstract: The parking brake control device sets a lock control target tension TTAR to a value which depends on the brake fluid pressure (i.e. M/C pressure), wherein the lock control target tension TTAR is used as a threshold determining whether the condition for terminating a lock control is satisfied or not. This operation is aimed for compensating the decrease of the tension applied to the brake cable which occurs caused by the service brake when the service brake is operating and does not occur when the service brake is not operating. Therefore, it is possible to prevent the service brake from causing a problem in which the lock control is terminated while a desired brake force is not achieved at the EPB.

Abstract: A method shall render it possible that an especially favorable pilot control can be achieved with an electrically controllable hydraulic valve (10), in particular an analog/digital inlet valve of a friction brake of a motor vehicle brake system. To this end, an actuating current is applied to the hydraulic valve (10), which is determined by linking an available opening current characteristic curve (Iopen(?P)table) of the hydraulic valve (10) to a correction value (igrad), with the correction value (igrad) being predetermined depending on a number of parameters that are characteristic of the hydraulic valve (10).

Abstract: A method for controlling braking in a vehicle having a brake pedal includes the steps of calculating an intended amount of brake torque corresponding to a braking request made via application of the brake pedal, applying the intended amount of brake torque if a pre-determined condition pertaining to the vehicle is satisfied, and applying a filtered amount of brake torque if the pre-determined condition is not satisfied.

Abstract: The invention relates to an architecture for powering aircraft brakes for an aircraft having at least two undercarriages, each having a certain number of wheels (L1, L2; R1, R2), each of the wheels being fitted with a brake having a certain number of electromechanical braking actuators (1, 2, 3, 4). The architecture has at least four power supply units that power groups of actuators taken from complementary groups of wheels.

Abstract: A brake fill effect minimization function for preventing or reducing brake controller windup during a brake fill condition or the like that may commonly occur in hydraulic or electromechanical brake systems, particularly during initial application of the brakes or during anti-skid conditions. The function temporarily reduces error input to the brake controller during a perceived brake fill condition (hydraulic brakes) or running clearance condition (electromechanical brakes) thereby facilitating smooth application of the brakes during initial braking and/or under anti-skid conditions.

Abstract: A method for controlling and/or regulating an electronically triggerable vehicle brake system, operating on the return principle, and to such a brake system in which by an adapted triggering of the drive motor for the pressure generator, the pumping quantity of the pressure generator is varied such that the difference between these flows of pressure medium to and from the master cylinder assumes a minimal value, preferably a value of zero. To that end, the driving rpm of the pressure generator is preferably varied. The trigger signal for the drive motor can be ascertained by an electronic control unit from measurement outcomes from sensors within the vehicle brake system, or it can be estimated with the aid of a hydraulic volume model stored in memory in the control unit. The trigger signal can be controlled or regulated.

Abstract: An electromechanically actuable parking brake for motor vehicles is disclosed. The brake includes at least one electromechanical actuator whose rotational movement is converted into a translational movement by an actuating unit, and which moves at least one brake element in such a way that at least one brake lining which is connected to the brake element is pressed with a locking force against a rotor which is connected to a motor vehicle wheel, wherein the current consumption of electromechanical actuator when the parking brake is engaged and/or released can be acquired. Furthermore, a method for operating the electromechanically actuable parking brake is also disclosed.

Abstract: An electric brake actuator (motor cylinder apparatus) for generating hydraulic brake pressure on the basis of at least an electric signal corresponding to brake manipulation by an operator, which is incorporated in a vehicle brake system with an input apparatus being arranged separately from the electric brake actuator and receiving the brake manipulation. A reservoir reserving brake fluid is attached to a cylinder body included in the electric brake actuator, and the ceiling of the reservoir is inclined from the axis of the cylinder body in correspondence with an arrangement of the main body inclined from the horizontal line.

Abstract: A system and method for establishing a running clearance position for an electromechanical actuator (28), wherein the running clearance is based on an actuator ram (34) position attained during a force application to a brake stack (30). In particular, a running clearance calibrator (66) determines a position value corresponding to a position of the force applicator when retraction from an application of force on the brake stack commences. The running clearance calibrator also generates a running clearance position as a function of the position value.

Abstract: In some embodiments, a braking system for a positioner in a medical imaging apparatus comprises a brake coil coupled to a power supply, a first control circuit coupled to a top side of the brake coil, a second control circuit coupled to a bottom side of the brake coil, and a current sensor coupled to at least one of the first control circuit and the second control circuit.

Abstract: A trailer brake controller 10 for use in a passenger vehicle 12 is provided, including a control element 11 positioned within the passenger vehicle 12, a vehicle speed input 16 and a vehicle brake pressure input 14 providing speed and brake pressure data to the control element 11, and a trailer brake output 18 sending a signal to the trailer in response to the vehicle speed input 16 and the vehicle brake pressure input 14.