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Plant control device

A technology for controlling equipment and machines, applied to mechanical equipment, engine control, steering control installed on vehicles, etc.

Inactive Publication Date: 2004-12-01
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be considered that the above problems are caused by the very high speed response characteristic of the control of the self-tuning regulator

Method used

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  • Plant control device
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  • Plant control device

Examples

Experimental program
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Effect test

no. 1 example

[0044] figure 1 Shown is a structure of a control apparatus for a machine, that is, an air-fuel ratio control apparatus for an internal combustion engine (hereinafter referred to as "engine") according to a first embodiment of the present invention.

[0045] Engine 1 is a six-cylinder engine with an intake manifold 2 with a throttle valve 3 . The throttle opening (THA) sensor 4 is connected with the throttle valve 3 to output an electrical signal corresponding to the throttle opening THA of the throttle valve 3, and provides the electrical signal to an electric control unit (hereinafter referred to as "ECU") 5.

[0046] A fuel injection valve 6 is inserted between the engine 1 and the throttle valve 3, and slightly near the intake pipe 2 at a position on the upstream side of the intake valve (not shown) of each cylinder. These fuel injection valves 6 are connected to a fuel pump (not shown), and are electrically connected to the ECU 5 . The signal output by the ECU 5 contr...

no. 2 example

[0170] Figure 12 Shown is a schematic structural diagram of the control system of the second embodiment of the present invention, which includes a vehicle running lane keeping device. Such as Figure 13 As shown, the running lane keeping device controls the steering angle δ of the vehicle steering wheel so that the distance YACT from the left end of the running route to the center of the vehicle 50 (hereinafter referred to as "actual running position") coincides with the target running position YCMD.

[0171] Figure 12 The control system shown includes a self-tuning regulator 51 , a steering angle calculation module 52 , a steering mechanism 53 , a position detector 54 and a high-pass filter 55 . The self-adjusting regulator 51 includes an inverse transfer function controller 61 and a parameter adjusting mechanism 62 .

[0172] Based on the images captured by the CCD camera, the position detector 54 detects the actual operating position YACT. The high-pass filter 55 perf...

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PUM

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Abstract

The present invention provides a control apparatus for a plant, which can suppress excessive correction for a spiky disturbance being applied and maintain a good controllability, when controlling the plant, which is a controlled object, with the self-tuning regulator. A detected equivalent ratio KACT is input to a high-pass filter 33, and a high-pass filter output KACTHP is input to a parameter adjusting mechanism 42. The parameter adjusting mechanism 42 calculates a corrected updating vector (KID.dtheta(k)) by multiplying an updating component dtheta of a model parameter vector by a correction coefficient KID, and adds the corrected updating vector to a preceding value theta(k-1) of the model parameter vector, to thereby calculate a present value theta(k). The correction coefficient KID is changed from '1.0' to a value near '0' upon detection of the spiky response where an absolute value of the high-pass filter output KACTHP increases.

Description

technical field [0001] The present invention relates to a control device for a plant, in particular to a control device with a self-adjusting regulator, which is used to identify one or more models of the controlled object obtained by modeling the machine of the model parameters, and use the identified model parameters to control the machine. Background technique [0002] Japanese Patent Laid-Open No. 11-73206 discloses an example of a control apparatus for controlling the air-fuel ratio of an air-fuel mixture supplied to an internal combustion engine. This control device controls the air-fuel ratio using a self-adjusting regulator having a parameter adjusting mechanism that functions as an identifier for identifying model parameters of a controlled object model. [0003] In this control device, the self-adjusting regulator calculates the self-adjusting correction coefficient KSTR according to the air-fuel ratio measured by the air-fuel ratio sensor provided by the engine e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D45/00B62D1/28F02D41/14G05B5/01G05B13/02G05B13/04
CPCG05B5/01F02D2200/0404F02D2041/1433F02D41/1456B62D1/28F02D2200/0414F02D2200/0406F02D41/2477F02D41/14F02D41/1402F02D2200/703F02D41/1458G05B13/042
Inventor 水野隆英安井裕司岩城喜久
Owner HONDA MOTOR CO LTD