Abstract: An electronic control capable of processing wheel speed information is disclosed. An electronic control apparatus according to an embodiment of the disclosure includes: a first electronic control apparatus including a first signal processor configured to process a signal of a wheel speed sensor; and a second electronic control apparatus which includes a second signal processor configured to process the signal of the wheel speed sensor, a first switching device electrically provided between the wheel speed sensor and the first signal processor, configured to allow or block the signal of the wheel speed sensor to be transmitted to the first signal processor, and a second switching device electrically provided between the wheel speed sensor and the second signal processor, configured to allow or block the signal of the wheel speed sensor to be transmitted to the second signal processor.

Abstract: There is provided an information processing apparatus to provide a mechanism capable of improving accuracy of detection of abnormality of sensors without changing configurations of the sensors, the information processing apparatus including: an acquisition unit configured to obtain a first value obtained by measurement in a first measurement unit and a second value obtained by measurement in a second measurement unit whose dynamic range regarding measurement is a second dynamic range different from a first dynamic range of the first measurement unit; and a detection unit configured to detect abnormality of the first value or the second value on a basis of a change in a correlation between the first value and the second value.

Abstract: A utility vehicle includes a frame and a plurality of ground-engaging members supporting the frame. Each of the plurality of ground-engaging members is configured to rotate about an axle. The utility vehicle further includes a powertrain assembly supported by the frame and a braking system configured to operate in a normal run mode and an anti-lock braking mode. The braking system includes an anti-lock braking control module operably coupled to the plurality of ground-engaging members and configured to automatically engage the anti-lock braking mode in response to a predetermined condition.

Abstract: A smart trailer system coupled to a trailer of a vehicle includes a sensor configured to measure a parameter of the trailer, a sensor interface board electrically coupled to the sensor and configured to retrieve the measured parameter, and a master controller communicatively coupled to the sensor interface board via a data bus.

Abstract: An emergency braking control system of a vehicle using a limited slip differential, may include a brake circuit formed by splitting hydraulic lines for left and right side drive wheels; a limited slip differential disposed to restrict the differential of the drive wheels; and a controller for determining whether or not the braking circuit failure occurs in a braking situation, and performing the engagement control of the limited slip differential, wherein the controller is configured to perform the engagement control of the limited slip differential to distribute a braking force to drive wheel connected to a hydraulic line where the braking circuit failure occurs when the brake circuit failure occurs in the braking situation.

Abstract: An electronic controller includes a first electrical input, receiving electrical power of a first voltage for powering the electronic controller, and a second electrical input, receiving an electrical power line communication signal at a second voltage. The second voltage is different than the first voltage. The power line communication signal is received from a second electronic controller that is powered by electrical power of the second voltage.

Abstract: Provided are a brake system, a brake device, and a method of controlling brakes for railroad cars in which control can be multiplexed with a simple configuration. In a brake system 1 for railroad cars includes brake control devices 11, 12, 13 provided in railroad cars 101, 102 103 respectively that form a unit 104. Each brake control device 10 (11, 12, 13) is capable of outputting information of the corresponding car (101, 102, 103) to the other brake control devices 10 through a transmission device 20. The brake control device 10 can calculate a total necessary braking force value BRA required for braking all of the cars 101, 102 103 using the information output from the other brake control devices 10 to the transmission device 20.

Abstract: In some aspects of what is described herein, an aircraft wheel speed sensor system includes a pair of conductors coupled between an electro-mechanical system and a control system. The control system is configured to apply a carrier voltage signal to the pair of conductors and to detect a modulated current signal on the pair of conductors. The electro-mechanical system includes a stator and a rotor that moves upon rotation of an aircraft wheel. The stator includes a winding disposed about the rotor. The winding is configured to produce the modulated current signal on the pair of conductors in response to movement of the rotor. The modulated current signal has a frequency that is dependent on a rotational speed of the aircraft wheel.

Abstract: A brake control apparatus includes a braking force applying apparatus for applying a braking force to each of a plurality of wheels adapted to a vehicle, a braking force testing device for testing the braking force of a predetermined malfunction test subject wheel by controlling the braking force applied thereto to be reduced or maintained for a predetermined time on the basis of a test actuation pattern while the braking force applied to each wheel is increased, a wheel speed detecting device for detecting a wheel speed of each of the plurality of the wheels including the malfunction test subject wheel, and a malfunction detecting device for detecting a malfunctioning state, in a case where changes of the wheel speed of the malfunction test subject wheel towards acceleration is not detected while the braking force testing device testing the braking force applied to the malfunction test subject wheel.

Abstract: A method and apparatus for data interchange between a tractor vehicle and a trailer vehicle coupled thereto. A first electronic device provided in or on the tractor is connected via a data link to a second electronic device provided in or on the trailer; the first and second devices being connected to sensors and/or actuators for controlling operating functions of the vehicle allocated thereto and for measuring status information. Initiated by an information request, the first device sends request data via the data link to the second device. The first device receives status information via the data link sent by the second device in response to the request data. The first device outputs, in a manner that correlates with the trailer, the received status information by means of an output device disposed on or in the tractor. The same output scheme is used for both the tractor and trailer.

Abstract: A vehicle anti-lock brake system determines when an ABS failure condition has occurred, configures a failure condition operating mode of the ABS control, and, finally, activates the ABS control based on the failure condition operational mode. When a brake actuator failure occurs, this allows the system to configure the failure condition operating mode to exclude the wheel having the failed brake actuator. Alternately, the system may configure the failure condition operating mode to exclude wheel speed data when an invalid wheel speed indicator is determined for a wheel.

Abstract: A method for exchanging data in a vehicle train having a tractor, at least one trailer coupled to the tractor, and vehicle electronics allocated to the tractor and trailer interconnected via a PLC data bus used to provide programmed input and output functions for the vehicle electronics of the trailer. Data representing the programmed functionality is provided automatically and cyclically via the PLC data bus to the vehicle electronics. The vehicle electronics can be configured as ABS control electronics, the programmed input and output functions providing functionality beyond that of the ABS function. Control of these additional functions in the trailer vehicle electronics equipped with the specific functionality is then exercised via an input/output unit provided in the tractor and connected to the PLC data bus either directly or indirectly via the tractor ABS control electronics.

Abstract: The general principle underlying the invention is a braking system that is provided with an arithmetic unit with at least two independent channels for determining the reference speeds approximated to the actual vehicle speed. The at least two determined reference speeds are used only for regulating a part of the brakes installed in the vehicle.

Abstract: An abnormality determining device for a longitudinal acceleration sensor for a vehicle has: a first acceleration estimating unit based on a wheel speed; a second acceleration estimating unit based on the throttle angle; a determination-permission deciding unit for setting a determination-permission region based on the estimated values of the first and second acceleration estimating unit so as to output a determination-permission signal when a deviation between the vehicle acceleration by the first acceleration estimating unit and by the second acceleration estimating unit is within a predetermined value; and a determining unit for setting an abnormality determining region based on the vehicle acceleration estimated by the second acceleration estimating unit and for determining that the longitudinal acceleration sensor is abnormal, if the output value of the longitudinal acceleration sensor exists in the abnormality determining region for a predetermined time or longer in a state that a determination-permissio

Abstract: A microprocessor system for safety-critical control operations includes at least three central units which are preferably located jointly on one chip and execute the same program. Further, there is provision of read-only memories and random-access memories with additional memory locations for test data, input and output units and comparators which check the output signals of the central units for correlation. The central units are interconnected by way of bus systems and bypasses which enable the central units to jointly read and process the existing data, including the test data and commands, according to the same program. The central units are extended by redundant periphery units into two complete control signal circuits and are interconnected in such a manner that, upon failure, the faulty central unit is identified by a majority decision and an emergency operation function is maintained.

Abstract: A method for monitoring the wheels (R1, R2, R3, R4) of a motor vehicle (10) for fault states, in particular for incorrect tire pressures, comprises the steps of: each wheel (E1, E2, E3, E4) to be monitored is assigned a wheel unit (E1, E2, E3, E4) which transmits data (D1, D2, D3, D4) to a central evaluation device (ECU) of the vehicle (10) at least in response to a trigger signal, the occurrence of a fault state and the wheel position (FL, FR, RL, RR) of the wheel (R1, R2, R3, R4) at which the fault state has occurred being indicated. The detection and the indication of the wheel position (FL, FR, RL, RR) of the wheel (R1, R2, R3, R4) at which the fault state has occurred can be triggered after the fault state has been indicated.

Abstract: The time reset safety timer circuit eliminates approximately half of the external interfaces of the prior art safety timers. The prior art safety timers depend on vehicle axle speeds, brake indications, and/or trainline signals to initiate a safety timer reset. The time reset safety timer circuit in the present invention uses only internal information to initiate a safety timer reset. This simplifies the circuitry of the time reset safety timer circuit, which improves the reliability.

Abstract: The duration and average deceleration of a vehicle wheel are measured during a wheel speed departure and compared to duration and deceleration thresholds to determined if a wheel sneakdown condition exists for the wheel.

Abstract: A method of selecting a performance trim set for a control algorithm from multiple performance trims sets contained in a read only memory. The selected trim set is used by a control system for a motor vehicle, such as a traction control system. The selected trim set is determined by a trim set identification. The trim set identification is determined every ignition cycle from the system messages. A default trim set identification can be provided until the vehicle identification for a particular motor vehicle is received through the system messages. Thus, a failsafe is provided to ensure that a valid trim set is used for that particular motor vehicle.

Abstract: There is provided an automotive brake control system capable of executing ABS control (skid control), in which when an abnormality such as superimposition of noise on the output of a wheel speed sensor occurs, a pseudo vehicle body speed is generated by wheel-speed sensor signal excluding an abnormal wheel-speed sensor signal. The automotive brake control system includes an abnormality judgment section which determines whether an abnormal wheel-speed sensor signal is included in the wheel-speed sensor signals. The abnormality judgment section cooperates with a pseudo vehicle body speed generating section for generating a pseudo vehicle body speed based on the wheel-speed sensor signals except the abnormal wheel-speed sensor signal when the abnormality judgment section determines that the abnormal wheel-speed signal is present.

Abstract: Electronic braking force distribution control initiation is properly judged. Upon pressurizing the brake pedal, if the estimated vehicle deceleration or the vehicle wheel deceleration becomes larger than a threshold value, electronic braking force distribution control by controlling the rear wheel inlet and outlet valves is initiated. The deceleration threshold value is varied based on the degree of pressure applied stepping on the brake pedal.

Abstract: A vehicle braking system including a controller, in an initial anti-skid cycle, performs a first determination to select a high or a low control mode in accordance with wheel speed parameters. The controller in a second, or subsequent anti-skid cycle, performs a second determination to determine whether a near &mgr; test is to be performed in accordance with wheel speed parameters. The controller consequent upon selection of low control mode performs a near &mgr; test. The near &mgr; test includes performing a rise in the brake pressure and then selecting a high or low mode in accordance with the speed of the wheels resulting from the rise in brake pressure in the near &mgr; test.

Abstract: In a method of improving the control behavior of an anti-lock control system, criteria for identifying a cornering situation and the direction of curve are obtained from the rotating behavior of the vehicle wheels. For cornering identification, the wheel slip values (&lgr;i) are filtered by way of a first order, low pass and the filtered values are compared. The time constant (T) of the low pass filter is varied as a function of the acceleration (ai) of the respective wheel (i). The time constant (Ti) of the filter starting from a minimum value (Tmin), is increased according to the relation Ti=Tmin+(agrenz−ai)/k1 as soon as the acceleration (ai) of the respective wheel (i) drops below a predetermined limit value (agrenz).