公开(公告)号：US3875383A

公开(公告)日：1975-04-01

申请号：US34603473

申请日：1973-03-29

Applicant: INDUSTRIAL NUCLEONICS CORP

Inventor： SOMERVILLE GERALD H ,  STRAUMANIS MARIS A

IPC: G05B15/02 ,  G05D5/03 ,  G07C3/14 ,  G06G7/66 ,  G05B13/02

CPC classification number: G07C3/14 ,  G05B15/02 ,  G05D5/03 ,  Y10S131/905

Abstract: A system for controlling the setpoint for the average value of a material property includes a means for monitoring the property to derive a first signal indicative of the property values. A computer means responds to the first signal to derive second and third signals respectively indicative of the spread of values of the first signal over relatively short and long time intervals. In response to the spread of values indicated by the second signal exceeding a first statistically expected value, based on the number of property values derived from the monitoring equipment over the relatively short time interval, a flag signal is derived. A further flag signal is derived in response to the spread of values indicated by the third signal exceeding a second statistically expected value based on the number of property values derived over a longer time interval. The second statistically expected value changes as the number of samples of the property increases from the time when a particular long term computation cycle began. In response to either of the flag signals being derived, the computation cycles are re-initiated and a change is made in the average value setpoint in response to the difference signal which resulted in the derivation of the flag signal.

Abstract translation: 用于控制材料属性的平均值的设定值的系统包括用于监视该属性以导出指示该属性值的第一信号的装置。 计算机装置响应于第一信号以得到第二和第三信号，分别指示在相对较短和长的时间间隔内第一信号的值的扩展。 响应于由第二信号指示的值超过第一统计预期值的扩展，基于在相对短的时间间隔内从监视设备导出的属性值的数量，导出标志信号。 基于在较长时间间隔上导出的属性值的数量，响应于由第三信号指示的值超过第二统计期望值的值的推导导出另外的标志信号。 第二个统计预期值随着特定长期计算周期开始时的财产样本数量的增加而变化。 响应于导出的任何一个标志信号，重新启动计算周期，并且响应于导致标志信号的导出的差分信号而在平均值设定点中进行改变。