Title:
PLANT CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2018080628
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To continue a search even if the non-linearity of a model for use in the prediction of future values is high, in a reference governor for searching a correction target value candidate which minimizes an objective function including items related to the future values of an EGR rate of a diesel engine (or EGR amount) and boost pressure by a gradient method.SOLUTION: It is assumed that a correction target value candidate warrives at a retention point located in a center part of Fig. 7 during a search of the correction target value candidate w. In a saddle point determination step, three points of the vicinity of the retention point are set as succeeding correction target value candidates w. Then, gradients Δ(w) are calculated with respect to the correction target value candidates w, and further succeeding correction target value candidates ware set in directions of synthetic vectors indicating the gradients Δ(w). In the Fig. 7, since the correction target value candidate wseparates from an original retention point, it is determined that the retention point is a saddle point.SELECTED DRAWING: Figure 7
Inventors:
NAKADA ISATO
Application Number:
JP2016223357A
Publication Date:
May 24, 2018
Filing Date:
November 16, 2016
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F02D45/00; F02D43/00; G05B13/02; G05B13/04
Attorney, Agent or Firm:
Hideki Takahashi
Mamoru Takada
Hidekazu Onishi
Mamoru Takada
Hidekazu Onishi