Patent ID: 6892101
Filing Date: 2005-05-10
Classification: G05B

Abstract:
1. A feedback control method of giving a manipulated variable to an object to be controlled so as to make a controlled variable tracking a set point, and performing the set point tracking control, comprising: dividing a response process of set point tracking control into three, tracking, convergence, and stabilization phases; and executing a first phase switching procedure of switching a phase to the tracking phase at set point change start time as start time of the tracking phase, a tracking phase manipulated variable decision procedure of continuously outputting the manipulated variable which causes the controlled variable to tracking the set point in the tracking phase, a second phase switching procedure of switching the phase to the convergence phase at, as start time of the convergence phase, specific set point tracking control elapsed time at which the controlled variable does not exceed the set point in the tracking phase, a convergence phase manipulated variable decision procedure of continuously outputting a manipulated variable which converges the controlled variable to the vicinity of the set point in the convergence phase, a third phase switching procedure of switching the phase to the stabilization phase at, as start time of the stabilization phase, time at which the controlled variable reaches a preset situation in the convergence phase, and a stabilization phase manipulated variable decision procedure of continuously outputting a manipulated variable which stabilizes the controlled variable at the set point in the stabilization phase.