摘要:
The invention is directed to an anti-skid control system for controlling a braking force applied to a road wheel with a hydraulic braking pressure supplied to a wheel brake cylinder through a pressure control valve controlled by an electronic controller. On the basis of a wheel speed of the road wheel detected by a wheel speed sensor, the controller calculates an estimated vehicle speed and sets a reference speed on the basis thereof. In the controller, the wheel speed is compared with the reference speed, and in response to a result of comparison the hydraulic pressure supplied to the wheel brake cylinder is controlled by the pressure control valve. Through an adjustment by the controller, the hydraulic braking pressure is decreased in response to a change of difference between the wheel speed and the estimated vehicle speed for a certain period of time. The controller may be arranged to calculate an integrated value of the difference between the wheel speed and the estimated vehicle speed, to compare a value which is obtained by subtracting the integrated value from the wheel speed, with the reference speed, and to decrease the hydraulic pressure in the wheel brake cylinder in response to the result of comparison.
摘要:
The invention is directed to an arrangement for controlling a braking force applied to a road wheel, with a hydraulic braking pressure supplied to a wheel brake cylinder through an actuator. A standard speed is set on the basis of a wheel speed detected by a wheel speed sensor, and a peak of the wheel speed changing from increase thereof to decrease thereof is detected. A coefficient of friction of road surface is determined on the basis of a vehicle acceleration detected by an acceleration sensor. The actuator is controlled according to a pressure control mode selected from a decrease mode for decreasing the pressure, a hold mode for holding the pressure, a first increase mode for increasing the pressure when the wheel speed exceeds the standard speed, and a second increase mode for increasing the pressure when the wheel speed exceeds the peak of the wheel speed. The first increase mode is selected when the coefficient of friction exceeds a predetermined value and the standard speed exceeds a predetermined speed. The second increase mode is selected when the standard speed is lower than the predetermined speed.
摘要:
A photoelectric converter of a high signal-to-noise ratio, low cost, high productivity and stable characteristics and a system including the above photoelectric converter. The photoelectric converter includes a photoelectric converting portion in which a first electrode layer, an insulating layer for inhibiting carriers from transferring, a photoelectric converting semiconductor layer of a non-single-crystal type, an injection blocking layer for inhibiting a first type of carriers from being injected into the semiconductor layer and a second electrode layer are laminated in this order on an insulating substrate.
摘要:
A photoelectric converter of a high signal-to-noise ratio, low cost, high productivity and stable characteristics and a system including the above photoelectric converter. The photoelectric converter includes a photoelectric converting portion in which a first electrode layer, an insulating layer for inhibiting carriers from transferring, a photoelectric converting semiconductor layer of a non-single-crystal type, an injection blocking layer for inhibiting a first type of carriers from being injected into the semiconductor layer and a second electrode layer are laminated in this order on an insulating substrate.
摘要:
An antilock brake system (ABS) control apparatus for a four-wheel drive vehicle, having a slope identifier for determining the drive status of the vehicle along a slope before an ABS control is started, and a controller that changes the usual ABS control to a control in which the ABS control is restricted on condition that the state of the drive along the slope has been decided, whereby the braking distance of the vehicle during the drive along the slope can be shortened.
摘要:
An image photodetector includes a photosensor unit, a charge storage unit, and a switch unit, all of them are formed on a single-crystal semiconductor film grown from a single nucleus such that crystal formation is performed on a substrate having a free surface including a non-nucleus formation surface and a nucleus formation surface adjacent thereto. The non-nucleus formation surface has a low nucleation density. The nucleus formation surface has a sufficiently small area to allow growth of only the single nucleus and has a higher nucleation density that that of the non-nucleus formation surface.
摘要:
A photosensor having an electrically insulating, translucent substrate; an opaque conductive layer formed on the substrate; an insulating layer formed on the conductive layer, and a semiconductive layer formed on the insulating layer for receiving light and providing a current corresponding thereto. A pair of electrodes are formed in contact with the semiconductor layer and define a light receiving window therebetween. The electrodes are formed so as to not substantially overlap the conductive layer. The conductive layer is supplied with a bias voltage corresponding to a polarity and an amount of carriers defining the current of the semiconductor layer and a voltage Va of a small absolute value during a non-reading period of the photosensor.
摘要:
A method of producing a photosensor having a photoconductive layer and a pair of electrodes provided through an ohmic contact layer on the same surface of the photoconductive layer for applying a voltage to the photoconductive layer. The method comprises the steps of: forming an insulating layer on one surface of the photoconductive layer except at portions where the pair of electrodes is to be formed; forming a layer of an ohmic contact layer forming material on the insulating layer; forming a layer of an electrode forming material on the layer of an ohmic contact layer forming material; and removing the electrode forming material except at the portions where the pair of electrodes is to be formed, and the ohmic contact layer forming material.
摘要:
In an illumination device, a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to the area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. An image reading device and an information processing apparatus can also be equipped with the above-mentioned illumination device.
摘要:
There is disclosed an illumination device in which a light guide is adapted to emit the light from a face thereof and is provided with an area, on a face opposite to the light emitting face, for diffusing and/or reflecting the light introduced into the light guide from an end face thereof or is provided with uneven light emitting characteristics along the longitudinal direction of the light guide, and the center of the light source positioned at the end of the light guide is placed at a position aberrated from the normal line to said area, whereby attained are compactness, a low cost, a low electric power consumption, a high efficiency of utilization of the light emitted by the light source, and excellent and uniform illumination characteristics. There are also disclosed an image reading device and an information processing apparatus, equipped with the above-mentioned illumination device.