Title:
制御装置
Document Type and Number:
Japanese Patent JP3973922
Kind Code:
B2
Abstract:
There are provided a control device, a control method, a control unit, and an engine control unit, which are capable of controlling a controlled object with relatively large phase delay and dead time, while attaining elimination of lag in control timing between the input and output of the controlled object and improvement of control accuracy at the same time. A state predictor calculates a deviation (output deviation) between an output from an oxygen concentration sensor and a predetermined target value at a predetermined deviation calculation period. Then, a DSM controller calculates a target air-fuel ratio for converging the output from the oxygen concentration sensor to the predetermined target value, according to the calculated deviation, based on any one of a Delta modulation algorithm, a DeltaSigma modulation algorithm, and a SigmaDelta modulation algorithm at a predetermined calculation period shorter than the predetermined deviation calculation period.
Inventors:
Yuji Yasui
Application Number:
JP2002039094A
Publication Date:
September 12, 2007
Filing Date:
February 15, 2002
Export Citation:
Assignee:
Honda motor industry stock company
International Classes:
F02D45/00; G05B13/02; F02D41/14; G05B11/36; G05B13/04; G05B21/02; H03M3/02
Domestic Patent References:
| JP2001154704A | ||||
| JP2000043609A | ||||
| JP2001107781A | ||||
| JP2000332611A |
Attorney, Agent or Firm:
Tomoo Takahashi