| 摘要 |
PURPOSE:To apply an optimum manipulated variable to a plant and to operate the plant smoothly without tripping by estimating a manipulated variable by using a plant model, and providing plural limiting values and comparing it. CONSTITUTION:The 1st predictive arithmetic means 4 calculates the manipulated variable on the basis of specific algorithm from the quantities of state read by a plant state input means 3 and also estimates a future manipulated variable using a plant model in a storage device. A limiting value calculating means 5 the 1st limiting value for setting an operation area wherein the diagnosing function of the manipulated variable for every starts operation terminal of the plant from the quantity of state of the plant and the 2nd limiting value for setting an operation area wherein a protecting function operates. Data from the arithmetic means 4 and calculating means 5 are passed through a manipulated variable comparative decision means 7, the 2nd predictive arithmetic means 8, optimum manipulated variable, optimum manipulated variable selecting means 9, etc., to select the current optimum manipulated variable, which is outputted from an output device 11 to the plant 1. Consequently, the plant is put in smooth operation without tripping. |
