摘要:
A vehicle brake apparatus causes the brake control ECU to shut down control of the slave cylinder and the master cut valve in a failure mode in which the slave cylinder becomes inoperative due to a failure in the power supply, thereby allowing a brake fluid pressure generated by a master cylinder through operation of the brake pedal to actuate the wheel cylinder. The brake control ECU shuts down control of the slave cylinder and the master cut valve when the first monitoring device detects a failure in the power supply and the second monitoring device detects an interruption of the communication between the brake control ECU and other vehicle control devices that are provided independently of the brake control ECU.
摘要:
A brake system includes an electric brake force generator for braking a wheel of a vehicle by a driving force of an electric motor. A problem determination device is provided in which the problem determination device sends an electrical signal to the electric motor such that the electric motor rotates in a direction opposite that of the direction of rotation to generate a brake force. If a rotation of the electric motor is not detected, then the problem determination device determines that a problem has occurred.
摘要:
An IC-mounted card substrate comprising a first sheet member having at least a first support, a second sheet member having at least a second support and an electronic part fixing layer having therein an IC-module and provided between the first sheet member and the second sheet member, wherein the second sheet member has a cushion layer comprising an actinic ray-cured resin on the second support, and a displacement value of needle penetration of the cushion layer obtained by a thermo-mechanical analysis (TMA) apparatus is not more than 30% at temperature of 100° C. and not less than 30% at a temperature of 150° C. based on the thickness of the cushion layer.
摘要:
Formation of wear powder caused by wear of a ramp which is attributable to mutual contact of a lift tab and the ramp is to be reduced in loading and unloading operations. In one embodiment, a spindle motor is turned on by application of power, then the temperature of a ramp is measured and it is determined whether the temperature of the ramp has reached a preset temperature (about 25° C.) or not. If the answer is negative, a heater is energized to heat the ramp for raising the temperature of the ramp. When it is detected that the temperature of the ramp has reached the preset temperature, the heating of the ramp is stopped and the execution of loading and unloading operations is permitted, then an ordinary processing is started.
摘要:
During normal operation in which a motor cylinder is operative, when a depressing force cut-off valve is closed, a front wheel is braked by operating a first wheel cylinder by brake fluid pressure generated by the motor cylinder. When there is an abnormality in which the motor cylinder breaks down, the front wheel is braked by supplying, via the opened depressing force cut-off valve, brake fluid pressure generated by a master cylinder operated by a driver's braking operation to the first wheel cylinder, and a rear wheel is braked by supplying the brake fluid pressure to a second wheel cylinder. Thus, since both the front and rear wheels are braked by the brake fluid pressure generated by the master cylinder in case of abnormality, a vehicle can be reliably stopped by a sufficient braking force.
摘要:
A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50° or more when measured by using a lubricant coated on the magnetic disk, is free from start failure due to stiction caused by adhesion of the lubricant to the slider surface.
摘要:
Gas contaminants generated from the grease of bearings operating in a magnetic disk device adhere to the magnetic head and causing stiction and magnetic head crash. Such bearings are typically spindle bearings and pivot bearings. In operation, heat is generated that causes the bearing grease to generate the gases. By heat treating the grease, slow evaporating substances of hydrocarbon compounds with carbons of C9 to C13 in the grease are reduced to not more than 0.001 wt. % of the grease. The grease can then be used to lubricate the bearings. The heat treatment is performed at a temperature of 60.degree. to 100.degree. C. at a pressure of 10.sup.-3 to 10.sup.-8 torr. The assembled, lubricated bearings can be heat treated separately from the magnetic disk device or the heat treatment can take place after the bearings have been assembled in the magnetic disk device.
摘要:
An IC card comprising: a core layer comprising therein an electronic element having a memory medium; an image receptive layer recording at least either text information or image information; and an optical variation element layer comprising an optical variation element, wherein the memory medium stores a characteristic information of the optical variation element layer and at least either the text information or the image information.
摘要:
A magnetic disk drive has an external environment monitoring function. Data is stored on available disk media while the magnetic disk drive is in an unfavorable environment. Under favorable conditions, the data is then moved to a write-restricted area of the media, which was unavailable while the magnetic disk drive was in the unfavorable environment. The magnetic disk drive uses a temperature sensor/atmospheric pressure sensor as a monitoring device and exercises a function, for example, for reading a reference signal stored in a predetermined area of the medium at predefined intervals. When the external environment is favorable for the magnetic disk drive, the present invention can increase the information storage capacity determined appropriate under the current operating conditions.
摘要:
In a magnetic disk unit, in the control of a load/unload function of a magnetic head relative to a magnetic disk, the magnetic disk and the magnetic head are prevented from contacting each other and damage thereto is avoided by utilizing a shallow dual-step subambient pressure slider and carrying out loading/unloading at a rotational speed lower than a rated rotational speed of the normally operated magnetic disk at which writing and reading (R/W) of data to and from the magnetic disk by the magnetic head is normally carried out.