Abstract: A vehicle speed calculating device includes a vehicle speed calculating unit configured to calculate a control vehicle speed that is acquired by estimating a vehicle body speed that is a speed at which a vehicle is actually traveling, as a state variable used to control an onboard device configured to operate to realize various functions provided in the vehicle. The vehicle speed calculating unit is configured to include an extraction function of extracting at least one wheel speed acquired from at least one wheel that is assumed to be rotating in a state in which an influence causing a difference from the vehicle body speed is likely to be small, out of wheel speeds of a plurality of wheels, and a calculation function of calculating the control vehicle speed based on the at least one wheel speed extracted by the extraction function.

Abstract: A simplified electronics approach to allow cost, size, and power consumption to be reduced while maintaining state of the art accuracy and reliability, key features for wireless medical devices/systems. Extreme accuracy is achieved by innovative noise shaping and filtering introduced to the electrochemical sensor, before sampling by the analog to digital converter. Introduction of the noise to the electrochemical sensor provides very low power biasing which is necessary to achieve overall reliable and very accurate bias for the electrochemical reaction cell.

Abstract: The present invention provides a low-cost detachment determining device capable of determining whether or not an electromagnetic valve-equipped device has been detached. The detachment determining device determines whether or not at least a part of an electromagnetic valve-equipped device included in an industrial machine, such as a construction machine or an industrial vehicle, has been detached from the industrial machine, the electromagnetic valve-equipped device being a hydraulic device equipped with an electromagnetic valve.

Abstract: A method for controlling brakes includes receiving, by a controller, a first wheel speed from a first wheel speed sensor of a first wheel arrangement, receiving, by the controller, a second wheel speed from a second wheel speed sensor of a second wheel arrangement, calculating, by the controller, a pressure correction, and adjusting, by the controller, a pressure command for at least one of the first wheel arrangement and the second wheel arrangement.

Abstract: In one embodiment, a steering control delay is measured, where the steering delay represents the delay between the time of issuing a steering control command and the time of a response from one or more wheels of an autonomous vehicle. A speed control delay is measured between the time of issuing a speed control command and the time of a response from one or more wheels of the autonomous vehicle or the time of supplying pressure to the gas pedal or brake pedal. In response to a given route subsequently, an overall system delay is determined based on the steering control delay and the speed control delay using a predetermined algorithm. Planning and control data is generated in view of the system delay for operating the autonomous vehicle.

Abstract: In one embodiment, a steering control delay is measured, where the steering delay represents the delay between the time of issuing a steering control command and the time of a response from one or more wheels of an autonomous vehicle. A speed control delay is measured between the time of issuing a speed control command and the time of a response from one or more wheels of the autonomous vehicle or the time of supplying pressure to the gas pedal or brake pedal. In response to a given route subsequently, an overall system delay is determined based on the steering control delay and the speed control delay using a predetermined algorithm. Planning and control data is generated in view of the system delay for operating the autonomous vehicle.

Abstract: Autonomously driven vehicles operate in rain, snow and other adverse weather conditions. An on-board vehicle sensor has a beam with a diameter that is only intermittently blocked by rain, snow, dust or other obscurant particles. This allows an obstacle detection processor is to tell the difference between obstacles, terrain variations and obscurant particles, thereby enabling the vehicle driving control unit to disregard the presence of obscurant particles along the route taken by the vehicle. The sensor may form part of a LADAR or RADAR system or a video camera. The obstacle detection processor may receive time-spaced frames divided into cells or pixels, whereby groups of connected cells or pixels and/or cells or pixels that persist over longer periods of time are interpreted to be obstacles or terrain variations. The system may further including an input for receiving weather-specific configuration parameters to adjust the operation of the obstacle detection processor.

Abstract: A brake system for a motor vehicle, in particular for a utility vehicle, with a device for reducing the yawing moment on the front axle of the vehicle, characterized in that a device for measuring the slip and/or a device for measuring the load on the rear axle or on two running wheels of the rear axle of the vehicle arranged on sides opposite one another is present and a regulating or control device for influencing the brake pressure on the front wheels is present which limits the brake pressure on the front wheels depending on the measured slip and/or depending on the measured load on the rear axle or on the running wheels of the rear axle, the regulating or control device multiplying the difference of the brake pressures on the front wheels by a value which is smaller than 1.

Abstract: A system for determining if a tire of a vehicle is improperly inflated. The system includes a radar, a wheel speed sensor, and a controller. The radar is configured to emit a signal to detect a reflection of the signal off of an object positioned perpendicular to the vehicle, and to output an indication of a speed of the vehicle. The wheel speed sensor is configured to sense a speed of a wheel of the vehicle. The controller is configured to receive the indication of the speed of the vehicle from the radar, to calculate a speed of the vehicle based on the sensed speed of the wheel, and to determine a tire of the wheel is improperly inflated when the speed of the vehicle calculated using the wheel speed sensor varies by more than a predetermined amount from the speed of the vehicle determined using the radar signal.

Abstract: The present invention is directed to a remote control system for controlling a railway vehicle. The remote control system including a remote control device for transmitting signals to a first controller module. The first controller is mounted to the railway vehicle and controls and monitors the functions of the railway vehicle. The first controller module also relays information to the remote control device. The remote control system can also include a portable safety switch allowing any individual in proximity to the railway vehicle to send a stop signal to the first controller module to stop the railway vehicle if any unsafe conditions exist.

Abstract: The present invention is directed to a remote control system for controlling a railway vehicle. The remote control system including a remote control device for transmitting signals to a first controller module. The first controller is mounted to the railway vehicle and controls and monitors the functions of the railway vehicle. The first controller module also relays information to the remote control device. The remote control system can also include a portable safety switch allowing any individual in proximity to the railway vehicle to send a stop signal to the first controller module to stop the railway vehicle if any unsafe conditions exist.

Abstract: The present invention is directed to a remote control system for controlling a railway vehicle. The remote control system including a remote control device for transmitting signals to a first controller module. The first controller is mounted to the railway vehicle and controls and monitors the functions of the railway vehicle. The first controller module also relays information to the remote control device. The remote control system can also include a portable safety switch allowing any individual in proximity to the railway vehicle to send a stop signal to the first controller module to stop the railway vehicle if any unsafe conditions exist.

Abstract: A method for active traction control of a vehicle can be performed to optimize corner exiting performance of a vehicle that is operating in a high performance or racing environment. The method estimates a real-time tire traction value during operation of the vehicle, computes a remaining tire traction value based upon a comparison of the estimated real-time tire traction value to a total available tire traction value, and calculates a traction system torque limit from the remaining tire traction value. The calculated torque limit can then be used to limit the actual traction system torque of the vehicle as needed in a real-time manner.

Abstract: A system and related operating method for performance launch control of a vehicle begins by receiving a user-selected driving condition setting that is indicative of road conditions. The method also collects real-time vehicle status data during operation of the vehicle, and derives a target wheel slip profile from the user-selected driving condition setting and the real-time vehicle status data. The actual propulsion system torque of the vehicle is limited using the target wheel slip profile, resulting in improved performance for standstill launches.

Abstract: A non-consideration creating portion creates a non-consideration control command value based on a target value and an actual value of hydraulic pressure of a brake cylinder in a control-target brake system i. A consideration creating portion creates a consideration control command value based on the target value and the actual value of the hydraulic pressure in the control-target brake system i and a target value and an actual value of hydraulic pressure in a comparison-target brake system j. Then, one of the consideration control command value and the non-consideration command value is selected based on an absolute value of a difference in the target value between the control-target brake system i and the comparison-target brake system j, and a combination of a control mode in the control-target brake system i and a control mode in the comparison-target brake system j.

Abstract: A non-consideration creating portion creates a non-consideration control command value based on a target value and an actual value of hydraulic pressure of a brake cylinder in a control-target brake system i. A consideration creating portion creates a consideration control command value based on the target value and the actual value of the hydraulic pressure in the control-target brake system i and a target value and an actual value of hydraulic pressure in a comparison-target brake system j. Then, one of the consideration control command value and the non-consideration command value is selected based on an absolute value of a difference in the target value between the control-target brake system i and the comparison-target brake system j, and a combination of a control mode in the control-target brake system i and a control mode in the comparison-target brake system j.

Abstract: A braking system for braking a wheel of an automotive vehicle, including a brake for braking the wheel and an operating device operable to produce an output corresponding to an input thereof, for activating the brake according to the output, and wherein a change of the output of the operating device is delayed with respect to a change of the input depending upon an operating condition of the braking system. The braking system includes a brake-operating-force increasing device operable on the basis of a delay of the change of the output of the operating device with respect to the change of the input, to increase an operating force of the brake to a value which is larger than a value corresponding to the output of the operating device.

Abstract: A braking system for braking a wheel of an automotive vehicle, including a brake for braking the wheel and an operating device operable to produce an output corresponding to an input thereof, for activating the brake according to the output, and wherein a change of the output of the operating device is delayed with respect to a change of the input depending upon an operating condition of the braking system. The braking system includes a brake-operating-force increasing device operable on the basis of a delay of the change of the output of the operating device with respect to the change of the input, to increase an operating force of the brake to a value which is larger than a value corresponding to the output of the operating device.

Abstract: In a brake force control apparatus selectively performing a brake assist (BA) control for generating a brake force greater than that of a normal control time, an unnecessary restart of the BA control immediately after the BA control is terminated is prevented. The BA control is terminated when it is determined that an emergency braking is unnecessary since a master cylinder pressure (PM/C) has been reduced to a value less than a predetermined value. A restart of the BA control which is caused by a sharp change in the master cylinder pressure (PM/C) and a rate of change (.DELTA.PM/C) thereof due to a rapid decrease in a fluid pressure when the BA control is terminated is prohibited until a predetermined time has been passed after the BA control was terminated.

Abstract: A brake valve control method to control the operation of the brake valves is provided in which an error check can be made with one arithmetic logic unit. Signals from a wheel speed sensor are processed to compute the respective wheel speed, and signals from the wheel speed sensor are counted for a prescribed period to derive an approximate wheel speed. If the difference between the wheel speed and the approximate wheel speed is less than or equal to a threshold value, then processing to control the valves is continued; if the difference is greater than a threshold value, then processing to control the valves is suspended.

Abstract: An anti-skid control system of a vehicle includes a wheel speed sensor for sensing a wheel rotation speed, a hydraulic pressure adjusting device for adjusting a brake pressure of hydraulic fluid of the control system, and an anti-skid brake controller for controlling the hydraulic pressure adjusting device based on the wheel rotation speed detected. The brake pressure is cyclically changed in accordance with a control cycle including at least a pressure reduction phase in which the brake pressure is reduced and a pressure increase phase in which the brake pressure is increased. A brake pressure control device detects the pressure reduction amount based on a wheel operation parameter. A brake pressure reducing action is repeatedly executed in the pressure reduction phase at a predetermined interval. Braking performance can be improved by use of the system of this invention.

Abstract: In an anti-lock braking system in which pressure is reduced in pulses separated by pressure maintenance phases, the duration of the first maintenance phase is dependent upon the vehicle deceleration and the wheel slip. A second pressure reduction pulse is triggered only when the wheel acceleration is less than a predetermined low threshold.

Abstract: A control method and an apparatus therefor, in which the braking force distribution to rear wheels is increased in a normal state, while the braking force distribution to the rear wheels is reduced to prevent the rear wheels from being locked in an early stage when the road surface is slippery. There are provided a pressure sensor (74) for detecting a master cylinder pressure, proportioning valves (57.sub.1, 57.sub.2) arranged in passages which connect a master cylinder and rear wheel cylinders and adapted to operate so that the ratios of the wheel cylinder pressures to the master cylinder pressure are low in a region where the master cylinder pressure is not lower than a predetermined pressure, normally-open switching valves (62, 63) by-passing the two valves, and a controller (71).

Abstract: Methods for brake pressure control in a vehicular antilock brake system wherein brake pressure is restored to within a window of peak brake pressure after a reduction in pressure in response to a forced departure during vehicle braking. In a preferred embodiment, the pressure reduction is adaptively controlled. The vehicle has a plurality of wheels and each wheel has brake. The method includes increasing brake pressure at a wheel so as to attain a prereduction peak brake pressure, and initiating a pressure reduction mode of operation wherein brake fluid flows from the brake of the wheel. The method also includes restoring the brake pressure at the wheel to the desired brake pressure after termination of the pressure reduction mode of operation without making actual brake pressure measurements.