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    • 4. 发明授权
    • Rear wheel braking force control apparatus and control method therefor
    • 后轮制动力控制装置及其控制方法
    • US5297861A
    • 1994-03-29
    • US36542
    • 1993-03-22
    • Takao MoritaTsutomu MatsukawaHiromichi YasunagaTadao Tanaka
    • Takao MoritaTsutomu MatsukawaHiromichi YasunagaTadao Tanaka
    • B60T8/1764B60T8/1766B60T8/26B60T8/18
    • B60T8/266B60T8/1764B60T8/1766Y10S303/03
    • A first target value is set as an initial value of split point pressure, a master cylinder pressure is set as a second target value of split point pressure in a memory when ABS valves (17, 20, and 23) are operated, thereafter when a sign of locking of the rear wheels is detected, the target value is reduced even further and set in the memory, the target value is maintained for a predetermined time by timer control at every setting of a new target value, and when a braking deceleration generated while the target value is maintained in the memory, a controller (37) controls so that the target value is increased after the completion of braking. When the master cylinder pressure is higher than the target value stored in the memory, proportioning valves (26 and 27) are closed to decrease a ratio of the rear wheel braking force to the front wheel braking force, thereby always achieving appropriate control over the rear wheel braking force allocation.
    • 将第一目标值设定为分割点压力的初始值,当ABS阀(17,20,23)被操作时,将主缸压力设定为存储器中的分离点压力的第二目标值,之后,当 检测到后轮的锁定符号,目标值进一步减小并设置在存储器中,通过在新目标值的每次设定时的定时器控制将目标值保持预定时间,并且当产生制动减速时 当目标值保持在存储器中时,控制器(37)进行控制,使得在完成制动之后目标值增加。 当主缸压力高于存储在存储器中的目标值时,比例阀(26和27)被关闭以减小后轮制动力与前轮制动力的比率,从而总是实现对后轮的适当控制 车轮制动力分配。
    • 10. 发明授权
    • Surface acoustic wave device
    • 表面声波装置
    • US07589451B2
    • 2009-09-15
    • US10594982
    • 2005-03-08
    • Takao MoritaTakuya Ohwaki
    • Takao MoritaTakuya Ohwaki
    • H03H9/125H03H9/25
    • H03H9/02551
    • An object of the invention is to provide a SAW device where a device size is made smaller than that of a conventional structure, has a high Q value, and is excellent in a frequency temperature characteristic in a SAW device using a quartz substrate. Therefore, IDTs 2 including pluralities of electrode fingers mutually inserted and grating reflectors 3a and 3b positioned on both sides of the IDTs 2 are disposed on a piezoelectric substrate 1. The piezoelectric substrate 1 is a quartz flat plate where a cut angle θ of a rotation Y cut quartz substrate is set to satisfy a range of −64.0°
    • 本发明的目的是提供一种SAW器件,其中器件尺寸小于常规结构的尺寸,具有高Q值,并且在使用石英衬底的SAW器件中的频率温度特性优异。 因此,包括多个电极指相互插入的IDT2和位于IDT2的两侧的光栅反射器3a和3b设置在压电基板1上。压电基板1是石英平板,其中旋转角度θ Y切割石英基板被设定为在晶体Z轴的逆时针方向上满足-64.0°<-49.3°的范围,并且将声表面波的传播方向设定为与晶体的90°±5° X轴,要被激发的表面声波是SH波。 IDT2和光栅反射器3a和3b由Al或包含Al作为主要成分的合金制成,并且当表面声波的波长表示为λ时,设定由波长标准化的电极膜厚度H /λ 以满足0.04