Non-linear model predictive control method for controlling a gas-phase reactor including a rapid noise filter and method therefor

本发明提供一种从多个原始信号和至少一个先前产生的滤波信号中产生滤波信号的方法和一种从许多原始信号和至少一个先前产生的滤波信号中产生滤波信号的数字滤波器。较好地使用N-极性滤波器子程序来滤波传感器或控制器输出信号，就可以将由于这些信号中的噪声引起的虚假控制过程降至最小。 A method for controlling a chemical reactor such as a gas-phase reactor using a non-linear predictive control includes steps for generating a plurality of signals representing a current state of the chemical reactor and reflecting a respective constituent of reactants in the chemical reactor, calculating a future state of the chemical reactor responsive to said plurality of signals and referenced to mass hold-up of the reactants in the chemical reactor, and controlling at least one parameter related to the chemical reactor so as to control the future state of the chemical reactor. Spurious control events due to noise in sensor or controller output signals are preferably minimized by filtering these signals using a N-sign filter subroutine.