摘要:
A complex circuit component for a video signal circuit in a television receiver set has a single substrate, on which a first ceramic trap for removing speech carrier wave together with an inductor for that trap, a second trap for removing color subcarrier wave, and a delay circuit coupled with output of said second trap are mounted. The capacitors for those circuits are implemented by a pair of conductive patterns deposited on front surface and rear surface of the substrate. The capacitor for said first ceramic trap is subject to trimming so that the characteristics of the trap is adjustable.
摘要:
A wheel speed control apparatus for controlling a braking force and/or a driving force transmitted to wheels maintains the difference between the peripheral speed of each of the wheels and the vehicle running speed or an inferred value thereof at a value approximating the optimum value. The apparatus includes a normal control that detects and controls the increase or incipient increase of the difference over the absolute value using a differential value of the difference and difference or the rotational speed of the wheels. An integrating control detects and controls the continuation for a certain period of slightly excessive tendency of the absolute value of the difference, by comparing with a predetermined threshold value one of values which is smaller than the value with which, when the differential value is zero, the normal control would determines the excessive different only with the absolute value.
摘要:
An antilock brake control system for a motorcycle having front and rear wheels includes detectors for detecting front and rear wheel velocities, and a calculator for calculating an estimated velocity of the motorcycle. The calculator also calculates a slippage of the front and rear wheels relatively to the estimated motorcycle velocity. The amount of slippage is corrected by a compensation amount determined by the detection of various situations such as presence and absence of antilock control applied to front or rear wheel and presence and absence of brake applied to front or rear wheel.
摘要:
A multilayer ceramic substrate having a cavity is formed by the steps of laminating a plurality of ceramic green sheets including ceramic green sheets having through holes corresponding to the cavity to form a multilayer body, pressing the multilayer body and firing the pressed body. At this time, a shrinkage suppression green sheet is laminated on the surface of the a ceramic green sheet constituting the outermost layer of the multilayer body, and a shrinkage suppression green sheet piece is disposed on the ceramic green sheet exposed to the bottom of the cavity in accordance with the shape of the cavity. A burnable sheet is further disposed on the shrinkage suppression green sheet piece. Before the pressing step, an embedded green sheet separate from the ceramic green sheets (portion separated by inserting a cut) is disposed on the shrinkage suppression green sheet piece or the burnable sheet so that it is filled in the cavity. After the firing step, the embedded green sheet fired is removed.
摘要:
A wheel speed control device in an antilock brake system prevents the wheels of a vehicle such as an automobile from locking while braking. First and second brake pressure controllers are provided in which the first is a conventional differentiation type brake pressure controller and in which the second is an integration type brake pressure controller. Thus, a state such as an excessively low slip speed resulting from insufficient brake pressure, which was difficult to detect with a differentiation type main brake pressure controller, can be detected. This makes it possible to precisely and effectively control wheel speeds by executing minor pressure increase in which the brake pressure is increased at a low rate.
摘要:
A brake control device in an antilock brake system is disclosed for automatically adjusting a valve according to a wheel brake locking symptom to reduce a fluid pressure in a brake cylinder and eliminating symptom of brake locking. The brake control device includes a microcomputer which has a step for outputting a pressure reduction signal K required to eliminate a locking symptom, and a detector for detecting a current brake cylinder pressure. The microcomputer further has a step for correcting the pressure reduction signal K based on the current brake cylinder pressure. Thus, a corrected pressure reduction signal K is used for reducing the brake cylinder pressure.
摘要:
A front end module (2) comprises: a triplexer (11) for separating the AMPS band, the PCS band and the GPS band from one another; a duplexer (12) for separating transmission signals and reception signals in the AMPS band from each other; and a duplexer (13) for separating transmission signals and reception signals in the PCS band from each other. The duplexers (12, 13) each include an acoustic wave element that functions as a filter. A single multilayer substrate is used to integrate the triplexer (11) and the duplexers (12, 13). The triplexer (11) is made up of conductor layers located inside or on the surface of the multilayer substrate.
摘要:
A high frequency module incorporates a layered substrate, a plurality of elements mounted on a top surface of the layered substrate, and a metallic casing that covers these elements. The plurality of elements mounted on the top surface of the layered substrate include a band-pass filter element. The band-pass filter element includes a plurality of conductor layers for band-pass filter and a plurality of dielectric layers for band-pass filter that implement a function of a band-pass filter, but does not include any conductor layer that functions as an electromagnetic shield. A conductor layer for grounding that the layered substrate includes and the casing are each opposed to the band-pass filter element, and thereby function as an electromagnetic shield for the band-pass filter element.
摘要:
A multilayer ceramic substrate having a cavity is formed by the steps of laminating a plurality of ceramic green sheets including ceramic green sheets having through holes corresponding to the cavity to form a multilayer body, pressing the multilayer body and firing the pressed body. At this time, a shrinkage suppression green sheet is laminated on the surface of the a ceramic green sheet constituting the outermost layer of the multilayer body, and a shrinkage suppression green sheet piece is disposed on the ceramic green sheet exposed to the bottom of the cavity in accordance with the shape of the cavity. A burnable sheet is further disposed on the shrinkage suppression green sheet piece. Before the pressing step, an embedded green sheet separate from the ceramic green sheets (portion separated by inserting a cut) is disposed on the shrinkage suppression green sheet piece or the burnable sheet so that it is filled in the cavity. After the firing step, the embedded green sheet fired is removed.
摘要:
An antilock brake control apparatus is provided for adjusting the wheel cylinder pressure with actuators that include on/off-type valves. The antilock brake control apparatus includes wheel speed detectors for detecting the speed of each wheel, a wheel speed and estimated vehicle speed calculation device for calculating the wheel and vehicle behavior, and a locking symptoms detection device for detecting wheel locking symptoms and recovery from a wheel locking condition. A target pressure setting device for setting a target pressure, which is the estimated value of the wheel cylinder pressure during antilock brake control, based on a wheel cylinder pressure and a locking symptoms detection edge, is also provided. Further, a pressurization signal setting device for setting a pressurization signal used to drive the actuators based on the target pressure is provided. The antilock brake control apparatus reduces the effects of pressure pulsations caused by operation of the on/off valves and, thus, enables high precision wheel cylinder pressure control.