| 摘要 |
PURPOSE:To suppress the generation of damping oscillations by setting the controlled variable obtained after a period from the present at a level less than the present target value and then obtaining the manipulated variable which is supplied in the next period from said controlled variable. CONSTITUTION:The manipulated variable vector which is supplied to a plant 1 of a device to be controlled within a period is set by means of the present controlled variable vector so that the controlled variable vector is set at a desired level after a period. The target value is set at SV for the prescribed controlled variable X(t) of the plant 1 and then compared with the controlled variable X(nT) which is delivered from the plant 1 at the time nT. When the controlled variable X(nT) is smaller than the value SV, both the controlled and manipulated variable are obtained when the next period elapses and fed to the plane 1. This controlled variable is larger than the preceding controlled variable and smaller than the value SV. When the X(nT) is larger than the value SV, the manipulated variable is set so that the controlled variable obtained when a fixed period elapses is smaller than the SV. |
