Abstract: A Raman amplification device that Raman-amplifies an optical signal in a transmission line by Raman pumping, the Raman amplification device includes a processor configured to monitor a first signal communicated by the optical signal, set a threshold level of an alarm (WDMLOS) detection for determining whether the alarm is output at a time of transmission line disconnection in accordance with a monitoring result of the first signal, determine whether auto power shut down (APSD) control is performed by using a first APSD determination condition based on integration of optical supervisory channel (OSC) disconnection and the alarm, in a case where the monitoring result of the communicated first signal exceeds a predetermined condition, and determine whether the APSD control is performed by using a second APSD determination condition based on the OSC disconnection, in a case where the monitoring result of the communicated first signal is lower than the predetermined condition.

Abstract: The braking control device includes a control amount derivation unit that derives a target vehicle braking force representing a target value of a vehicle braking force applied, and a braking control unit that controls a regenerative braking device and a frictional braking device based on the target vehicle braking force. When the target vehicle braking force is increased, the braking control unit executes a braking force application process of increasing the frictional braking force applied to the wheel so that such frictional braking force becomes larger than the regenerative braking force applied to the wheel. When the target vehicle braking force is increased, the braking control unit executes a switching process of switching at least a part of the frictional braking force applied to the wheel to the regenerative braking force to increase the regenerative braking force applied to the wheel after execution of the braking force application process.

Abstract: A control device includes: a first braking unit, that applies a first braking force to a steering wheel of a vehicle; a second braking unit, that applies a second braking force to a non-steering wheel of the vehicle; and a control device that controls the first braking unit, and the second braking unit, according to a target braking force, where the control device includes a steering angle information acquiring unit that acquires a steering angle-related value related to a steering angle of the steering wheel, and a distribution changing unit that executes a distribution change control of changing a braking force distribution between the first braking force and the second braking force based on the steering angle-related value when the target braking force is applied.

Abstract: A brake control device is applied to a brake device that controls a front-wheel braking force and a rear-wheel braking force. The brake control device includes a ratio calculation circuit that calculates a target front and rear braking force distribution ratio based on a target pitch angle, and a brake control circuit that performs a stability control by operating the brake device based on the target front and rear braking force distribution ratio during braking.

Abstract: A braking control device includes: a control unit that is configured to control front-wheel braking power and rear-wheel braking power based on braking power distribution and requested braking power; a distribution setting unit that is configured to set the braking power distribution; and a slip judgment unit that is configured to judge whether or not the vehicle is in a rear-wheel-led slip state. If it is judged that the vehicle is in the rear-wheel-led slip state when the braking power distribution is first braking power distribution, the distribution setting unit executes a distribution shifting process of shifting the braking power distribution to second braking power distribution within a predetermined period. The second braking power distribution is such distribution that the rear-wheel braking power is reduced relative to that observed when the first braking power distribution is set as the braking power distribution.

Abstract: A braking control device, when stopping a vehicle in a state where a braking force is being applied to the vehicle, executes a reducing control of reducing the braking force corresponding to a braking request before the vehicle stops and executes an increasing control of increasing the braking force corresponding to the braking request before the reducing control in order to suppress vehicle pitching behavior generated when the braking force is applied to the vehicle. The control device sets braking force increase amount in the increasing control based on a difference distance that is a difference between a first distance correlated with a vehicle traveling distance from a reduction start timing when the reducing control is executed until the stopping of the vehicle and a second distance correlated with a vehicle traveling distance from the reduction start timing when the reducing control is not executed until the stopping of the vehicle.

Abstract: A vehicle which adopts a control device as a braking control device includes a sensor that acquires a rotation angle of a wheel. The control device includes a first distance calculation unit, a second distance calculation unit, and a braking control unit. The first distance calculation unit sets a braking force corresponding to a braking operation member operation amount as a reference braking force, estimates vehicle longitudinal acceleration based on the reference braking force, and calculates a braking force reference distance estimating a moving distance until the vehicle stops based on the longitudinal acceleration. The second distance calculation unit calculates a wheel reference distance estimating the vehicle moving distance based on a detection signal of the sensor and a wheel diameter. The braking control unit executes feedback control for controlling the vehicle braking force so that a difference between the braking force reference distance and the wheel reference distance decreases.

Abstract: A brake control device is applied to a brake device that controls a front-wheel braking force and a rear-wheel braking force. The brake control device includes a ratio calculation circuit that calculates a target front and rear braking force distribution ratio based on a target pitch angle, and a brake control circuit that performs a stability control by operating the brake device based on the target front and rear braking force distribution ratio during braking.

Abstract: A braking control device includes a control unit that controls a braking force in accordance with an operation amount of a braking operation member, and a braking determination unit that determines whether or not a reduction in the operation amount of the braking operation member has been started when the braking force is applied to a vehicle due to the operation of the braking operation member. In a case where a reduction rate of the operation amount upon determination that the reduction in the operation amount has been started is equal to or larger than a reduction rate determination value, the control unit starts limitation processing of providing a limitation to the reduction rate of the braking force against the vehicle.

Abstract: A vehicle which adopts a control device as a braking control device includes a sensor that acquires a rotation angle of a wheel. The control device includes a first distance calculation unit, a second distance calculation unit, and a braking control unit. The first distance calculation unit sets a braking force corresponding to a braking operation member operation amount as a reference braking force, estimates vehicle longitudinal acceleration based on the reference braking force, and calculates a braking force reference distance estimating a moving distance until the vehicle stops based on the longitudinal acceleration. The second distance calculation unit calculates a wheel reference distance estimating the vehicle moving distance based on a detection signal of the sensor and a wheel diameter. The braking control unit executes feedback control for controlling the vehicle braking force so that a difference between the braking force reference distance and the wheel reference distance decreases.

Abstract: The control device includes a vehicle required braking force acquisition unit that acquires a vehicle required braking force that is a required value of the braking force applied to the vehicle, and a roll control unit that controls the rolling motion of the vehicle by adjusting a distribution ratio of the braking force with respect to a target wheel including at least one of a rear wheel on an inside during turning and a front wheel on an outside during turning of the vehicle when the braking force is applied to the vehicle according to the vehicle required braking force under a situation where the vehicle is turning.

Abstract: A braking control device adjusts a regenerative braking force and a friction braking force applied to a vehicle. The braking control device includes a stopping distance acquisition unit that acquires a distance moved until the vehicle in travel stops, as a stopping distance. The braking control device includes a brake adjustment unit that starts replacement control to replace the regenerative braking force among braking forces, which are applied to the vehicle, with the friction braking force, when the stopping distance becomes smaller than a replacement determination value.

Abstract: A vehicle stop determination device includes: a vehicle wheel speed sensor that outputs a signal according to a rotational speed of vehicle wheels; an acquisition unit that acquires a wheel speed at a predetermined reference time that a vehicle decelerates, based on an output signal of the vehicle wheel speed sensor; a derivation unit that derives a stopping position where the vehicle stops, based on the wheel speed acquired by the acquisition unit; and a determination unit that executes a stop determination to determine that the vehicle has stopped, when a difference distance between a position of the vehicle after the reference time and the stopping position is a stop determination value or less.

Abstract: A brake control device is applied to a brake device that controls a front-wheel braking force and a rear-wheel braking force. The brake control device includes a ratio calculation circuit that calculates a target front and rear braking force distribution ratio based on a target pitch angle, and a brake control circuit that performs a stability control by operating the brake device based on the target front and rear braking force distribution ratio during braking.

Abstract: A braking control device executes pre-stop braking control to adjust a braking force when a vehicle stops. The pre-stop braking control includes reduction control that reduces the braking force, and increase control that is executed before the reduction control is started, to increase the braking force. An increasing unit executes the increase control, and a reducing unit executes the reduction control. A calculation unit calculates a braking distance extended by the reduction control, as an extended distance, and calculates a braking distance shortened by the increase control, as a shortened distance. The calculation unit calculates the extended distance to become longer when an operation amount of a braking operation member operated by a driver is reduced during braking than when the operation amount is not reduced. When a difference between the extended distance and the shortened distance is less than a determination value, the reducing unit starts the reduction control.

Abstract: A brake control device includes: a decrease determination unit that determines whether a requested braking force for a vehicle is decreasing; and a brake control unit which, on the condition that the decrease determination unit determines that the requested braking force is decreasing during deceleration of the vehicle, executes ratio change decrease control of reducing the braking force of the vehicle according to the decrease of the requested braking force, while making a braking force distribution ratio smaller than a reference braking force distribution ratio. The reference braking force distribution ratio is the braking force distribution ratio at a time point when the requested braking force starts to decrease.

Abstract: A braking control device includes a braking control unit that controls a braking device, a load reduction amount derivation unit that derives a reduction amount of a load input from a vehicle body to a suspension for a second wheel, and an anti-force derivation unit that derives an anti-lift force. The braking control unit performs posture braking processing of adjusting the second braking force so that the difference between the reduction amount of the load and the anti-lift force is less than or equal to a difference determination value, and adjusting the first braking force so that the vehicle braking force becomes the required value.

Abstract: The braking control device includes a control amount derivation unit that derives a target vehicle braking force representing a target value of a vehicle braking force applied, and a braking control unit that controls a regenerative braking device and a frictional braking device based on the target vehicle braking force. When the target vehicle braking force is increased, the braking control unit executes a braking force application process of increasing the frictional braking force applied to the wheel so that such frictional braking force becomes larger than the regenerative braking force applied to the wheel. When the target vehicle braking force is increased, the braking control unit executes a switching process of switching at least a part of the frictional braking force applied to the wheel to the regenerative braking force to increase the regenerative braking force applied to the wheel after execution of the braking force application process.

Abstract: An optical amplification device includes a first Raman amplifier outputs a first excitation light to a transmission line in a same direction as a signal light, and a second Raman amplifier outputs a second excitation light to the transmission line in an opposite direction to the signal light. The first Raman amplifier includes a first detector detects a first power of a first transmitted light transmitted through a first optical filter. The second Raman amplifier includes a second detector detects second power of a second transmitted light transmitted through a second optical filter. The first Raman amplifier stops output of the first excitation light when the first power is higher than a threshold. The second Raman amplifier stops output of the second excitation light when the second power is reduced from power of the first excitation light transmitted through the second optical filter.

Abstract: A braking control device includes a first control unit configured to execute first control for reducing a target braking force, which is either a front-wheel braking force to be applied to front wheels of a vehicle or a rear-wheel braking force to be applied to rear wheels during increasing of deceleration of the vehicle, in a case that a behavior of the vehicle is unstable as the target braking force is increased; and a second control unit configured to execute second control for reducing a rate of increase in the target braking force and increasing a rate of increase in the front-wheel braking force or the rear-wheel braking force, which is not the target braking force, prior to execution of the first control.