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    • 2. 发明授权
    • Power converter control system
    • 电源转换器控制系统
    • US4144559A
    • 1979-03-13
    • US829476
    • 1977-08-31
    • Yoshio OkumuraKyozo TachibanaHiroshi SatoGenichi Matsumoto
    • Yoshio OkumuraKyozo TachibanaHiroshi SatoGenichi Matsumoto
    • H02M7/19H02M7/12H02M7/162H02M7/155
    • H02M7/162H02M7/1626Y10S388/912
    • A power converter control system for use with a power converter of the type which comprises a plurality of cascade-connected converter units of which at least one converter unit is subjected to continuous control of its conduction phase angle and the remaining converter units are subjected to on-off control of their conductivity is arranged to include a master controller for instructing the number of the converter units to be rendered operative, a reversible counter operative to change its content in response to a phase controlling command applied to the continuously controlled converter unit indicating a maximum or minimum conduction phase angle or delayed phase angle in conduction, a unit change control unit for producing unit changing operation signals to be applied to the respective converter units for controlling the operation of the same, by using one of the binary bits derived from the counter without modification and decoding the remaining bits, and a comparing and identifying circuit which compares the content of the reversible counter with the output of the master controller and causing the reversible counter to operate in response to the aforementioned phase control command until the content of the same becomes identical to the output of the master controller.
    • 一种与功率转换器一起使用的电力转换器控制系统,该电力转换器包括多个级联连接的转换器单元,其中至少一个转换器单元经受其导通相位角的连续控制,并且其余转换器单元经受 其控制电导率被设置为包括主控制器,用于指示转换器单元的数量可操作,可逆计数器可操作以响应于施加到连续受控的转换器单元的相位控制命令来改变其内容,指示一个 最大或最小导通相位角或导通的延迟相位角;单位变更控制单元,用于产生要施加到各个转换器单元的单元改变运算信号,以控制其运行,通过使用从 计数器不修改和解码剩余的位,以及比较和识别 电路,其将可逆计数器的内容与主控制器的输出进行比较,并使可逆计数器响应于上述相位控制命令而工作,直到其内容变得与主控制器的输出相同。
    • 6. 发明申请
    • Pin for chain and method for manufacture thereof
    • 链条针及其制造方法
    • US20060162819A1
    • 2006-07-27
    • US10559287
    • 2004-06-01
    • Yoshio OkumuraAkira Fujiwara
    • Yoshio OkumuraAkira Fujiwara
    • C23C8/22
    • F16G13/06C23C10/08C23C10/36F16G13/04
    • A chain pin manufacturing method of the invention requires only one heat treatment step of forming a boundary part composed of (V, Cr) 8C7 by Cr and C in a base material at first through a cementation process in a VCl atmosphere by using Cr-rich steel as the pin base material and of forming a surface layer composed of V8C7. A Cr content in the boundary part decreases gradually toward the base material and the surface layer and the boundary part is not clearly divided. Accordingly, as compared to a conventional chain pin manufacturing method which has required two steps of heat treatment of forming an intermediate layer by a chrome carbide layer and of forming a surface layer as a mixed layer of vanadium and chrome carbide layers, the inventive manufacturing method is simple and enables to manufacture the pin having high abrasion resistance and suitably used in a severe environment like a timing chain.
    • 本发明的链销制造方法仅需要一个热处理步骤,该步骤通过Cr和C在基材中形成由(V,Cr)8 C 7 N 7构成的边界部分 首先通过使用富Cr钢作为针基材料并且形成由V 8 C 7 N 7组成的表面层,在VCl气氛中通过胶结处理材料。 边界部分的Cr含量朝向基材逐渐减少,表层和边界部分不明显分开。 因此,与通过碳化铬层形成中间层的热处理和形成作为钒和碳化铬层的混合层的表面层的两个步骤的传统链销制造方法相比,本发明的制造方法 简单,能够制造具有高耐磨性的销,适用于像正时链条这样的恶劣环境。