ESTIMATING METHOD FOR ELAPSE TIME CHANGING RATE OF CONTROLLED SUBJECT IN VEHICLE AND CONTROLLED SUBJECT CONTROLLING METHOD BASED ON THE ELAPSE TIME CHANGING RATE

摘要

PROBLEM TO BE SOLVED: To easily confirm the elapse time changing rate of a controlled subject by previously memorizing the reference manipulated variable of the controlled subject, and estimating the elapse time changing rate of the controlled subject by difference between the manipulated variable of the controlled subject when a control rate is feedback controlled as an objective value and a reference manipulated variable. ;SOLUTION: The reference manipulated variable of a controlled subject is calculated in a reference manipulated variable calculating part A1 on the basis of a map, and so on, and also the controlled subject C1 is operated by a manipulated variable calculating part B1 on the basis of the reference manipulated variable. When an engine is in a specified operating condition, a control rate is fed back, and a correction coefficient for the purpose of matching an actual output to a target output is calculated in a correction value calculating part D1 by using a map, a function, and so on, on the basis of the basic performance of the controlled system, and outputted to the manipulated variable calculating part B1. This correction coefficient is also inputted to a lapse time changing rate estimating part E1, and recognized as difference between the best manipulated variable of the controlled subject and an actual manipulated variable, and the lapse time changing rate of the controlled subject is estimated on the basis of this correction coefficient.;COPYRIGHT: (C)1997,JPO