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    • 48. 发明授权
    • Four-wheel steer control system
    • 四轮转向控制系统
    • US4893690A
    • 1990-01-16
    • US277744
    • 1988-11-30
    • Kazunori MoriFukashi SugasawaKenji KawagoeHiroshi Mori
    • Kazunori MoriFukashi SugasawaKenji KawagoeHiroshi Mori
    • B62D6/00B62D7/14B62D7/15B62D101/00B62D113/00B62D117/00
    • B62D7/159B62D7/146
    • A steering control system comprises means for performing a secondary steer of front and rear wheels by angles computed using a steer angle .theta., steer angle angular velocity .theta. and vehicle speed V from the following formulas, ##EQU1## where .delta.f is a front wheel secondary steer angle, .delta.r is a rear wheel secondary steer angle, N is a steer gear ratio and Kf, Kr, Tf and Tr are control constants which are functions of vehicle speed.In accordance with the present invention, the control system is provided with means for correcting the control constants Kf and Kr in such a way that the control constants Kf and Kr become a steady-state value when the steer angle is larger than a predetermined value and become smaller than the steady-state value when the steering angle becomes smaller than the predetermined value, means for correcting the control constants Tf and Tr in such a way that the control constants Tf and Tr become a steady-state value when the steer angle is larger than a predetermined value and become smaller than the second mentioned steady-state value when the steer angle becomes smaller than the second mentioned predetermined value, means for correcting the control constants Kf and Kr in such a way that the control constant Kr reduces at the rate larger than the control constant Kf as the steer angle reduces from the first mentioned predetermined value, and means for correcting the control constants Tf and Tr in such a way that the control constant Tf reeduces at the rate larger than the control contant Tr as the steer angle reduces from the second mentioned predetermined value.
    • 转向控制系统包括用于通过以下公式使用转向角θ,转向角速度θ和车速V计算的角度来执行前轮和后轮的次级转向的装置,其中delta f是前轮次级 转向角,delta r是后轮次级转向角,N是转向齿轮比,Kf,Kr,Tf和Tr是作为车速功能的控制常数。 根据本发明,控制系统具有用于校正控制常数Kf和Kr的装置,使得当转向角大于预定值时,控制常数Kf和Kr成为稳态值, 当转向角小于预定值时变得小于稳态值;用于校正控制常数Tf和Tr的装置,使得控制常数Tf和Tr成为当转向角为稳态值时的稳态值 大于预定值并且当转向角小于第二所述预定值时变得小于第二提到的稳态值;用于校正控制常数Kf和Kr的装置,使得控制常数Kr在 速度大于控制常数Kf,因为转向角从第一预定值减小,以及用于校正控制常数Tf an的装置 d Tr,使得当转向角从第二所述预定值减小时,控制常数Tf以大于控制对手Tr的速率重新输出。
    • 50. 发明授权
    • Flame-retardant polyester resin composition
    • 阻燃聚酯树脂组合物
    • US4548964A
    • 1985-10-22
    • US679639
    • 1984-12-10
    • Tomohiko YoshidaHiroshi Mori
    • Tomohiko YoshidaHiroshi Mori
    • C08K3/22C08K5/06C08K5/1515C08K7/14C08K13/02C08K13/04C08L63/02C08L67/00C08L67/02C08L71/02C08K5/10
    • C08K13/04
    • Disclosed is a flame-retardant polyester resin composition comprising (1) a reinforced resin composition obtained by melt blending (A) a polyethylene terephthalate resin, (B) glass fibers, a combination of (C) at least one flame retarder having a specified chemical structure and (D) hexabromobiphenyl ether used in specific proportions, (E) antimony trioxide and optionally (F) an inorganic filler; and (2) (G) at least one ester compound subsequently added to the reinforced resin composition, the ester compound being derived from pentaerythitol and a fatty acid. This flame-retardant polyester resin composition can yield molded articles having excellent mechanical properties and flame retardancy, and exhibits good releasability of the molded article and rapid feed into the molding machine at the time of molding.
    • 公开了一种阻燃性聚酯树脂组合物,其包含(1)通过熔融共混(A)聚对苯二甲酸乙二醇酯树脂,(B)玻璃纤维,(C)至少一种具有特定化学性质的阻燃剂 结构和(D)特定比例使用的六溴代二苯醚,(E)三氧化锑和任选的(F)无机填料; 和(2)(G)至少一种酯化合物,随后加入到增强树脂组合物中,酯化合物衍生自季戊四醇和脂肪酸。 该阻燃聚酯树脂组合物可以得到具有优异的机械性能和阻燃性的成型品,并且在成型时表现出良好的成型品的脱模性和快速进料到成形机中。