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Plant control device

A technology of equipment control and equipment, applied in the direction of electric controller, adaptive control, computer control, etc., can solve the problems of large calculation amount and large calculation load, etc.

Inactive Publication Date: 2015-09-23
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the amount of calculation involved in the online calculation of the reference regulator is huge, when the online calculation performed by the reference regulator is installed in the control device, the control device will also bear a huge calculation load

Method used

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  • Plant control device
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Embodiment Construction

[0025] Hereinafter, embodiments of the present invention will be described using the drawings.

[0026] The control device according to the present embodiment is a diesel engine mounted on an automobile. More specifically, it is a control device using a diesel engine post-processing system as a control target device. figure 1 It is a schematic diagram showing the structure of the aftertreatment system of a diesel engine. The aftertreatment system is equipped with DOC (Diesel Oxidation Catalyst) and DPF (Diesel Particulate Filter) on the exhaust passage, and a fuel addition valve at the exhaust port of the cylinder head. At the downstream of the DPF in the exhaust passage, a temperature sensor for measuring the DPF temperature (specifically, the outlet gas temperature of the DPF) as a control output of the aftertreatment system is installed.

[0027] The control device according to the present embodiment includes a control structure for making the DPF temperature follow the target v...

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Abstract

According to this plant control device, on the basis of a correction target- value candidate of control output, a reference governor uses a prediction model in which a closed loop system including a plant and a feedback controller are modeled to sequentially calculate across a limited prediction horizon a prediction value for a plant state quantity that includes a specific state quantity to which conditions are assigned. When doing so, if the prediction value of a specific state quantity conflicts with the conditions in relation to a correction target-value candidate, the reference governor excludes such correction target-value candidate from a final correction target value. As a result of the foregoing, the sufficiency of the conditions is guaranteed and the calculation load necessary for correction of the target values of control output is reduced.

Description

Technical field [0001] The present invention relates to a control device for equipment, and in detail, to a control device that uses a reference regulator to correct the target value of the control output of the equipment so that the restriction imposed on the state quantity of the equipment is sufficient. Background technique [0002] A general device control device is configured to determine the control input of the device by feedback control so that the control output of the device is given a target value to follow the target value. However, in actual device control, there are often various restrictions on the hardware or control of the state of the device. If these restrictions are insufficient, there is a possibility that hardware damage or control performance degradation may occur. The sufficiency of the restriction and the followability to the target value of the control output are also one of the important performances pursued in the control of the equipment. [0003] The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/36G05B13/02
CPCG05B11/36G05B13/04G06N5/02G05B15/02G05B13/02
Inventor 嶋田真典
Owner TOYOTA JIDOSHA KK
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