公开(公告)号：US3906196A

公开(公告)日：1975-09-16

申请号：US40716673

申请日：1973-10-17

Applicant: INDUSTRIAL NUCLEONICS CORP

Inventor： SPITZ DAVID ALLAN

IPC: D21F5/00 ,  F26B25/22 ,  G05B11/10 ,  G05D22/02 ,  G05B11/01

CPC classification number: F26B25/22 ,  D21F5/00 ,  G05B11/10 ,  G05D22/02

Abstract: A feedback system provides control for an actuator in a range of error signals wherein deadband is otherwise frequently provided to reduce noise content of a parameter controlled by the actuator. A signal indicative of the magnitude of the controlled parameter is compared with a setpoint for the controlled parameter to derive an error signal having a magnitude and polarity equal to the difference between the parameter and the setpoint. For error signals within assigned limits, a control signal for the actuator is derived by feeding the error signal to a network which generates an output signal having a magnitude directly proportional to the square of the error signal and a polarity that is the same as the polarity of the error signal. For error signals beyond assigned limits for the error signal, the control signal is linearly related to the error signal.

Abstract translation: 反馈系统提供在一系列误差信号中的致动器的控制，其中通常提供死区以减少由致动器控制的参数的噪声含量。 将指示受控参数的幅度的信号与受控参数的设定值进行比较，以导出具有等于和极性等于参数和设定值之差的幅度和极性的误差信号。 对于分配限制内的误差信号，通过将误差信号馈送到产生具有与误差信号的平方成正比的幅度的输出信号和与极性相同的极性的网络来导出用于致动器的控制信号 的误差信号。 对于误差信号超出分配限值的误差信号，控制信号与误差信号线性相关。

公开(公告)号：US3876872A

公开(公告)日：1975-04-08

申请号：US18925271

申请日：1971-10-14

Applicant: INDUSTRIAL NUCLEONICS CORP

Inventor： SPITZ DAVID ALLAN

IPC: G05B13/00 ,  G05B11/36 ,  G05B13/02 ,  G05D5/03 ,  G06F15/46

CPC classification number: G05D5/03 ,  G05B13/02

Abstract: A continuous material production process is regulated by a controller whose set point is automatically optimized according to statistical computations based on inputs of measured fraction defective and fraction defective set-point values. These values are each converted to a linear deviation quantity based on an estimate of standard deviation computed from defect level, process average and measured fraction defective. The deviation quantities and the difference therebetween are computed repeatedly, and the difference values are accumulated to provide integral control of the set point for the process controller.