Distributed control system in which individual controllers executed by
sharing loads
    67.
    发明授权
    Distributed control system in which individual controllers executed by sharing loads 失效
    通过共享负载执行单个控制器的分布式控制系统

    公开(公告)号:US5796936A

    公开(公告)日:1998-08-18

    申请号:US801923

    申请日:1997-02-14

    摘要: A distributed control system includes a plurality of controllers each composed of a plurality of processors and being coupled through a network. Each controller includes a scheduler for measuring a load; internal backup means for controlling which controller bears the load; backup request means for requesting another controller to bear the load; and backup accept means for answering to a request for bearing the load from another controller in accordance with the load of the requesting controller. Thus, the load which cannot be executed by one controller can be distributed and executed by other controllers in accordance with their loads.

    摘要翻译: 分布式控制系统包括多个控制器,每个控制器由多个处理器组成并通过网络耦合。 每个控制器包括用于测量负载的调度器; 用于控制哪个控制器负载的内部备份装置; 备用请求装置,用于请求另一控制器承担负载; 以及备份接受装置,用于根据请求控制器的负载应答来自另一控制器的负载请求。 因此,不能由一个控制器执行的负载可以根据其负载由其他控制器分配和执行。

    Position/speed detection method and apparatus
    69.
    发明授权
    Position/speed detection method and apparatus 失效
    位置/速度检测方法和装置

    公开(公告)号:US4922175A

    公开(公告)日:1990-05-01

    申请号:US318688

    申请日:1989-03-03

    IPC分类号: G01D5/245 G01D5/244

    CPC分类号: G01D5/24409

    摘要: Disclosed is a position detecting method and apparatus which are suitable for detecting the position of a moving body on the basis of the output of a position detector for generating two-phase periodic waves having a phase difference of a quarter period, the method comprising the steps of: comparing either one of the two-phase periodic waves with a predetermined reference value having hysteresis to thereby obtain a roughly estimated position for every half period of the one periodic wave; analog-to-digital converting the two-phase periodic waves and a zero-cross value for every sampling period to thereby obtain a finely estimated position; and detecting the position of the moving body on the basis of the roughly estimated position and the finely estimated position while correcting an error due to the hysteresis at the starting point of the roughly estimated position, by use of the relationship between the roughly estimated position and the finely estimated position. According to this method/apparatus, continuity between the roughly estimated position and the finely estimated position can be maintained, so that exact and high-resolution position detection can be performed.

    摘要翻译: 公开了一种位置检测方法和装置,其适用于根据用于产生具有四分之一周期的相位差的两相周期波的位置检测器的输出来检测移动体的位置,该方法包括步骤 :将两相周期波中的任一个与具有滞后的预定参考值进行比较,从而获得一个周期波的每半个周期的粗略估计位置; 在每个采样周期对模拟数字转换两相周期波和零交叉值,从而获得精细估计的位置; 并且通过使用粗略估计位置与粗略估计位置之间的关系,在粗略估计位置和精确估计位置的基础上检测移动体的位置,同时校正由于在粗略估计位置的起点处的滞后导致的误差 精细估计的位置。 根据该方法/装置,能够维持粗略估计位置与精细估计位置之间的连续性,从而能够进行精确,高分辨率的位置检测。