CN102676713B - Feedforward feedback simulation method for TRT (Top Gas Pressure Recovery Turbine unit) blast furnace top pressure control stamping process and system therefor - Google Patents

Abstract

The invention provides a feedforward feedback simulation method for a TRT blast furnace top pressure control stamping process. Through establishing a feedforward feedback simulation system and utilizing a simulation method for the blast furnace stamping process, the rating curve of a stationary guide blade is utilized in advance for feedforward control of the opening degree of the stationary guide blade during stamping, the set value of the top pressure and the feedback value are compared, a controlled variable is output for feedback control of the stationary guide blade, and commissioning in the simulation system can ensure a more reasonable control scheme, so that the influence of direct online testing of different control schemes on the normal operation of the blast furnace can be avoided.

Description

TRT blast furnace top pressure is controlled punching course feedforward feedback emulation mode and system

Technical field

The present invention relates to TRT blast furnace top pressure control field in metallurgy industry.

Background technology

TRT is the abbreviation of Top Gas Pressure Recovery Turbine unit, is known as blast furnace gas excess pressure power generating device, and it utilizes the High Temperature High Pressure coal gas that blast furnace produces to promote turbine, and then drives generator generating.According to statistics, the energy of 30%-40% in the recyclable blast furnace gas of TRT.The reducing valve group traditional with blast furnace compared, and can better stablize blast furnace top pressure, also reduced greatly the sound pollution that reducing valve group is brought.TRT can not only bring huge economic benefit for iron and steel enterprise, is also the mark post engineering of energy-saving and emission-reduction simultaneously.Typical TRT technical process as shown in Figure 1.

TRT is in controlling the process of blast furnace top pressure, only need under normal circumstances conventional PID can stablize preferably blast furnace top pressure, but blast furnace can cause strong disturbance to blast furnace top pressure when punching press, now only depending on conventional PID to control can not press fluctuation to maintain a less scope on top, certainly will produce certain impact to the normal production of blast furnace like this, but do not have at present good control program and solve the impact of punching course on furnace top pressure, the particular requirements such as continuity of simultaneously producing due to blast furnace, if the control program that slip-stick artist's on-line testing is different, be certain to the impact larger on the normal generation of blast furnace, even there are various more dangerous consequences.

Summary of the invention

The technical problem to be solved in the present invention is: provide a kind of TRT blast furnace top pressure to control punching press feedforward emulation mode and system, can in analogue system, debug, avoid directly on production line, testing and impacting.

The present invention solves the problems of the technologies described above taked technical scheme to be: a kind of TRT blast furnace top pressure is controlled punching course feedforward feedback emulation mode, it is characterized in that: it comprises the following steps:

1), for each integral part of TRT system, set up respectively each parts class emulation module, and be each parts class emulation module editor and design variable, interface;

2) interface by each parts class emulation module connects parts class emulation module by actual TRT system, and regulates each module parameter to make system reach stable state;

3) analyze feature and the control method of actual TRT system punching course, increase by 3 program class emulation modules, be respectively punching press interference module, feed forward control module and PID feedback control module; Punching press interference module is for the impact of emulation punching course on blast furnace top pressure; Feed forward control module for utilizing in advance the rating curve of stator blade to control stator blade aperture when punching press; PID feedback control module compares and exports manipulated variable stator blade is controlled for top being installed with to definite value and value of feedback;

The gas flow that described feed forward control module goes out to flow into punching press tank according to the pressure reduction before and after ram valve and gas flow coefficient calculations when punching press, simultaneously according to the rating curve of stator blade, calculate stator blade institute to aperture that should gas flow, when punching press, utilize in advance the rating curve control stator blade aperture of stator blade;

Described PID feedback control module is installed with definite value r (t) by top and compares and form controlled deviation e (t) with value of feedback c (t):

e(t)＝r(t)-c(t) (1)，

Again by controlled deviation e (t) in proportion, by linear combination, form manipulated variable u (t) after differential, integral operation:

$u\left(t\right)=k_p*e\left(t\right)+\frac{1}{T_i}{\∫}_0^{t}e\left(t\right)\mathrm{dt}+T_d*\frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}---\left(2\right),$

In formula (2), u (t) is manipulated variable, k _pfor ratio control gain, T _ifor integration time constant, T _dfor derivative time constant, t is the time;

4) system emulation parameter is set, carries out simulation calculating.

Press such scheme, described step 1) in parts class emulation module comprise:

Border A: be the first level pressure node, simulation enters the pressure of the hot blast of blast furnace;

Pipeline A: comprise a pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Bf model: comprise upper container and lower container, connected by the first variable valve between upper container and lower container; The aperture of the first variable valve is fixed value;

Pipeline B: comprise b pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Stator blade: comprise the second variable valve, the aperture of the second variable valve is by manipulated variable u (t) and the feed forward control module controls of described PID feedback control module output;

Boundary B: be the second level pressure node, simulation is through the pipe network gas pressure after stator blade;

Ram valve: the switch of ram valve is controlled by described punching press interference module;

Punching press tank: comprise a container;

Border A, pipeline A, bf model, pipeline B, stator blade are connected in turn with boundary B, separate Yi Ge branch and be connected with ram valve between pipeline B and stator blade, and the other end of ram valve is connected with punching press tank;

Top in PID feedback control module is installed with definite value r (t) and is determined by technique specialty; Value of feedback c (t) is actual measured blast furnace top pressure value, i.e. upper container force value in bf model.

Press such scheme, described step 3) the concrete control program of feed forward control module is:

If the pipeline pressure before ram valve is P ₀, punching press tank internal pressure is P ₁, P ₀and P ₁pressure reduction be Δ p and Δ p=P ₀-P ₁, first according to pressure differential deltap p, calculate the gas flow F that flows into punching press tank ₂:

$F_2=k*\sqrt{\mathrm{\Δp}},$

Wherein k is orifice coefficient, relevant with the form of ram valve;

Then according to this gas flow F ₂and the rating curve of stator blade calculates the corresponding aperture of stator blade, control in advance stator blade aperture.

Press such scheme, it also comprises step 5) by simulation result and desired result comparison, system emulation parameter is debugged, to obtain optimization control parameter.

TRT blast furnace top pressure is controlled a punching course feedforward feedback analogue system, it is characterized in that: it comprises parts generic module and program generic module;

Wherein parts generic module comprises:

Border A: be the first level pressure node, simulation enters the pressure of the hot blast of blast furnace;

Pipeline A: comprise a pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Bf model: comprise upper container and lower container, connected by the first variable valve between upper container and lower container; The aperture of the first variable valve is fixed value;

Pipeline B: comprise b pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Stator blade: comprise the second variable valve, the aperture of the second variable valve is by described feed forward control module controls;

Boundary B: be the second level pressure node, simulation is through the pipe network gas pressure after stator blade;

Ram valve: the switch of ram valve is controlled by described punching press interference module;

Punching press tank: comprise a container;

Border A, pipeline A, bf model, pipeline B, stator blade are connected in turn with boundary B, separate Yi Ge branch and be connected with ram valve between pipeline B and stator blade, and the other end of ram valve is connected with punching press tank;

Program generic module comprises:

Punching press interference module, the impact for emulation punching course on blast furnace top pressure;

Feed forward control module for utilizing in advance the rating curve of stator blade to control stator blade aperture when punching press, when punching press, according to the pressure reduction before and after ram valve and gas flow coefficient calculations, flow into the gas flow of punching press tank, simultaneously according to the rating curve of stator blade, calculate stator blade institute to aperture that should gas flow, when punching press, utilize in advance the rating curve control stator blade aperture of stator blade;

PID feedback control module compares and exports manipulated variable stator blade is controlled for top being installed with to definite value and value of feedback, top is installed with to definite value r (t) and compares formation controlled deviation e (t) with value of feedback c (t):

e(t)＝r(t)-c(t) (1)，

Again by controlled deviation e (t) in proportion, by linear combination, form manipulated variable u (t) after differential, integral operation:

$u\left(t\right)=k_p*e\left(t\right)+\frac{1}{T_i}{\∫}_0^{t}e\left(t\right)\mathrm{dt}+T_d*\frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}---\left(2\right),$

In formula (2), u (t) is manipulated variable, k _pfor ratio control gain, T _ifor integration time constant, T _dfor derivative time constant, t is the time.

Press such scheme, it is set up based on Modelica language.

Beneficial effect of the present invention is:

1, by blast furnace punching course being set up to feedforward feedback analogue system and being used emulation mode, by debugging in analogue system, to determine more rational control program, avoid direct-on-line to test different control programs, the impact on the normal generation of blast furnace.

2, select Modelica language to set up this analogue system, compare with other modeling softwares, can be convenient to physical system, carry out modeling, and can be well to flow, pressure, this solves tight coupling parameter, thereby can more truly, comprehensively reflect the running condition of TRT system.

Accompanying drawing explanation

Fig. 1 is typical TRT process flow diagram.

Fig. 2 is that TRT blast furnace top pressure is controlled model diagram.

Fig. 3 is that the curve of cyclical fluctuations is pressed on punching course top.

Furnace top pressure set(ting)value and process values curve when Fig. 4 is feedforward feedback control.

Stator blade operation curve when Fig. 5 is feedforward feedback control.

Fig. 6 is feedback control flow process figure.

Fig. 7 is PID feedback control module physical model figure.

Fig. 8 is feed forward control schema.

Embodiment

Fig. 2 is that TRT blast furnace top pressure is controlled model diagram, it is the topological framework of whole TRT simplifying model, border A produces a stable gas flow, through piping, A enters blast furnace, gas flows out from furnace roof by the bed of material in blast furnace, and flow into the stator blade in turbine through segment length's pipeline B, finally flow out to boundary B; Before stator blade, there is a lateral to be connected to punching press tank, on pipeline between stator blade and punching press tank, ram valve is housed, when opening, closing due to ram valve, blast furnace gas flow is had to larger impact, so the time that furnace top pressure can be opened along with ram valve, be closed and ram valve is opened produces fluctuation.Native system and method will be simulated the impact of the switch of ram valve on blast furnace top pressure just, by attempting the different control program to stator blade aperture, make the fluctuation of blast furnace top pressure minimum, and after being verified in native system, recycling is to actual production line.

Blast furnace is divided into upper and lower two spaces by the bed of material, can be equivalent to two airtight large containers, i.e. upper container and lower container, and the bed of material can be equivalent to a valve, and the first variable valve, in punching course, can think that the aperture of the first variable valve is fixed value.Owing to there is pressure reduction in the pipeline pressure before ram valve (being the pressure that in Fig. 2, Q is ordered) and punching press tank internal pressure, therefore can introducing furnace roof blast furnace gas batch can after opening, ram valve cause the gas flow that furnace roof flows out to increase, if now stator blade keeps aperture before, can cause furnace top pressure to decline, therefore need to when punching press, control stator blade aperture, reduce the blast furnace gas flowing out from stator blade, the gas flow that furnace roof is flowed out is relatively steady.

For actual TRT, blast furnace roof will have the pipeline of hundreds of rice to stator blade, therefore by stator blade regulating stove pressure on top surface, has an obvious large time delay.For coal gas transmission pipeline, because pipeline is longer, whole system is had to two impacts, the one, the crushing of coal gas in pipeline transmission, the 2nd, because coal gas is coercible gas, long pipeline plays the effect of a buffering in whole fluid system.For an independent container, be a first-order system, and pipeline B is not a straight pipeline, can not directly be equivalent to a large container, centre has some resistance elements, and it is middle across resistance element that native system is equivalent to several containers, forms a high order system.

1997 Modelica associations of Nian， Sweden non-profit organization develop a kind of object oriented language Modelica that is applicable to large-scale complex isomery physics system modelling.Modelica is known as unified object-oriented physical system modeling language, to the system from different field, adopts unified mode to describe, and has thoroughly realized the seamless integrated and data exchange between different field model.

The core of Modelica emulational language is equation, it utilizes equation to be described various physical phenomenons, slip-stick artist is without the too much simulation algorithm of paying close attention to, only need be to needing the object of emulation to carry out math equation description, utilize the emulation tool of Modelica that each simulation object is coupled together, how relevant Modelica instrument can determine automatic calculation equation variable, without manual intervention, therefore finally the process of physical object emulation is just evolved into the process of emulation tool to large-scale solving equations.

The TRT blast furnace top pressure of the present embodiment is controlled punching course feedforward feedback analogue system and is set up based on Modelica language, and it comprises parts generic module and program generic module.

Wherein parts generic module comprises:

Border A: be the first level pressure node P _a, for simulating the pressure of the hot blast that enters blast furnace; Be generally steady state value, P is set in the present embodiment _a=300kPa.

Pipeline A: comprise a pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture; A=3 in the present embodiment.

Bf model: comprise upper container and lower container, connected by the first variable valve between upper container and lower container; The aperture of the first variable valve is set, and in the present embodiment, the aperture of the first valve is fixed as 70%.

Pipeline B: comprise b pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture; B=2 in the present embodiment.

Stator blade: comprise the second variable valve, the aperture of the second variable valve is by manipulated variable u (t) and the feed forward control module controls of described PID feedback control module output.

Boundary B: be the second level pressure node P _b, simulation is through the pipe network gas pressure after stator blade, and this value is steady state value substantially, and P is set in the present embodiment _b=100kPa.

Ram valve: the open and close of ram valve and switching time are controlled by described punching press interference module.

Punching press tank: comprise a container.

Border A, pipeline A, bf model, pipeline B, stator blade are connected in turn with boundary B, have a lateral to be connected to punching press tank before stator blade, on the pipeline between stator blade and punching press tank, ram valve are housed.

When concrete modular design, for the design of container:

Container is cylindrical, and its diameter is D, is highly L, and this Vessel Design has two interfaces, an import F _left, an outlet F _right, for front and back, connecting, each interface inside all comprises two variablees, flow p and pressure q, this interface automatically produces Connection equations when being connected with front and back module.Container model inside has following equation:

1) inlet and outlet pressure equates: F _leftp=F _rightp;

2) import and export the variable quantity that difference in flow equals container inner pressure

In above formula, F _leftp is intake pressure, F _rightp is top hole pressure, F _leftq is inlet flow rate, F _rightq is rate of discharge, F _rightp ' is that container inner pressure is poor.

For pipeline, why be thought of as the form that valve adds container and simulate the characteristic of pipeline, be because gas has compressive characteristics, while flowing in long pipeline, except there being the pressure-losses, long pipeline also has the effect of a buffering to gas.Therefore consider to add the fixedly valve of aperture, the crushing that flows and produce at pipeline for analog gas, the formula of reduction of crushing is dp=k * q ², container has the effect of buffering.Dp is pipeline crushing, and k is flow modificatory coefficient, and q is flow.

As stated above, according to the physical size of each parts class emulation module and requirement, respectively they are designed.

Program generic module comprises:

Punching press interference module, the impact for emulation punching course on blast furnace top pressure, the switch of control ram valve.The interference (not adding PID feedback control and feed forward control) that adds punching course when stable state, furnace top pressure fluctuates as shown in Figure 3.Punching course, since 100s, is opened ram valve, closes ram valve when 500s, and aperture when whole process stator blade aperture remains on stable state is constant, and the 206kPa of furnace top pressure during by stable state is down to 193kPa, and 13kPa has declined.This simulation result is for comparing with adding the simulation result of PID feedback control and feed forward control.

PID feedback control module, its physical model figure as shown in Figure 7, compares and exports manipulated variable stator blade is controlled for top being installed with to definite value and value of feedback.

Wherein PID feedback control module is installed with definite value r (t) by top and compares formation controlled deviation e (t) with value of feedback c (t):

e(t)＝r(t)-c(t) (1)，

Again by controlled deviation e (t) in proportion, by linear combination, form manipulated variable u (t) after differential, integral operation:

$u\left(t\right)=k_p*e\left(t\right)+\frac{1}{T_i}{\∫}_0^{t}e\left(t\right)\mathrm{dt}+T_d*\frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}---\left(2\right),$

In formula (2), u (t) is manipulated variable, k _pfor ratio control gain, T _ifor integration time constant, T _dfor derivative time constant, t is the time;

Top in PID feedback control module is installed with definite value r (t) and is determined by technique specialty; Value of feedback c (t) is actual measured blast furnace top pressure value, i.e. upper container force value in bf model; Manipulated variable u (t) is for controlling the aperture of the second variable valve.

Feed forward control module for utilizing in advance the rating curve of stator blade to control stator blade aperture when punching press, because blast furnace punching press belongs to the interference that can predict in advance, therefore in theory can be by the analysis of punching course being controlled in advance to quiet leaf divergence to eliminate the impact of punching press on blast furnace top pressure.When punching press, according to the pressure reduction before and after ram valve and gas flow coefficient calculations, flow into the gas flow of punching press tank, simultaneously according to the rating curve of stator blade calculate stator blade to aperture that should gas flow, when punching press, utilize in advance the rating curve of stator blade to control stator blade aperture, can well eliminate the impact of punching course on furnace top pressure.

Suppose that the pipeline pressure before ram valve is P ₀, punching press tank internal pressure is P ₁, due to P ₀and P ₁there is pressure differential deltap p (Δ p=P ₀-P ₁), therefore can introducing furnace roof blast furnace gas batch can after opening, ram valve cause the gas flow that furnace roof flows out to increase, if now stator blade keeps aperture before, can cause furnace top pressure to decline, therefore need to when punching press, control in advance stator blade aperture, reduce the blast furnace gas flowing out from stator blade, the gas flow that furnace roof is flowed out is relatively steady.

First according to pressure differential deltap p, calculate the gas flow F that flows into punching press tank ₂:

$F_2=k*\sqrt{\mathrm{\Δp}},$

Wherein k is orifice coefficient, relevant with the form of ram valve;

Then according to this gas flow F ₂and the rating curve of stator blade calculates the corresponding aperture of stator blade, control in advance stator blade aperture.

TRT blast furnace top pressure is controlled punching course feedforward feedback emulation mode and is comprised the following steps:

1), for each integral part of TRT system, set up respectively each parts class emulation module, and be each parts class emulation module editor and design variable, interface.

2) interface by each parts class emulation module connects parts class emulation module by actual TRT system, and regulates each module parameter to make system reach stable state.

3) analyze feature and the control method of actual TRT system punching course, increase by 3 program class emulation modules, be respectively punching press interference module, feed forward control module and PID feedback control module; Punching press interference module is for the impact of emulation punching course on blast furnace top pressure; Feed forward control module for utilizing in advance the rating curve of stator blade to control stator blade aperture when punching press; PID feedback control module compares and exports manipulated variable stator blade is controlled for top being installed with to definite value and value of feedback;

Described feed forward control module controls schema as shown in Figure 8, the gas flow that goes out to flow into punching press tank according to the pressure reduction before and after ram valve and gas flow coefficient calculations when punching press, simultaneously according to the rating curve of stator blade, calculate stator blade institute to aperture that should gas flow, when punching press, utilize in advance the rating curve control stator blade aperture of stator blade.

Described PID feedback control module control flow chart as shown in Figure 6, is installed with definite value r (t) by top and compares and form controlled deviation e (t) with value of feedback c (t):

e(t)＝r(t)-c(t) (1)，

Again by controlled deviation e (t) in proportion, by linear combination, form manipulated variable u (t) after differential, integral operation:

$u\left(t\right)=k_p*e\left(t\right)+\frac{1}{T_i}{\∫}_0^{t}e\left(t\right)\mathrm{dt}+T_d*\frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}---\left(2\right),$

In formula (2), u (t) is manipulated variable, k _pfor ratio control gain, T _ifor integration time constant, T _dfor derivative time constant, t is the time.

4) system emulation parameter is set, carries out simulation calculating.

5) by simulation result and desired result comparison, system emulation parameter is debugged, to obtain optimization control parameter, specifically: the top pressure actual value and its set(ting)value that compare the upper container of bf model, be that value of feedback c (t) and top are installed with definite value r (t), pid parameter and/or feedforward making time are debugged, made the process values of blast furnace top pressure more approach its set(ting)value.

Before PID input control, first need PID, there is in theory several different methods PID, but maximum examination method of still gathering of using in Practical Project.The examination method of gathering is under the prerequisite allowing in system, by the response curve (as step response) of operation with closed ring viewing system, then according to each, regulate the roughly impact of parameter on system response, repeatedly gather examination parameter, to reach satisfied system response, thereby determine pid parameter.Generally take first ratio, rear integration, the more whole step of differential.Under a lot of situations, PID controls does not need three whole participations to control, but can change flexibly and easily control strategy, implements P, PI, PD or PID and controls, and what native system adopted is PI control.

After parameter tuning is complete, can move whole model, in the present embodiment, at 100s, start punching press, feed forward control starts to reduce stator blade aperture (this time can be made corresponding adjustment according to practical situation) at 80s in advance, and punching press finishes when 500s, then ram valve will be closed, so stator blade recovers aperture (this time can be made corresponding adjustment according to practical situation) in advance at 450s; Adopt PID to control simultaneously.Fluctuation and stator blade operation curve are pressed as shown in Figure 4, Figure 5 in top after regulating, and as can be seen from the figure, in whole regulate process, blast furnace top pressure error is+0.4/-0.4kPa, and stator blade aperture scope is between 28%～52%.

Claims (4)

1. TRT blast furnace top pressure is controlled a punching course feedforward feedback emulation mode, it is characterized in that: it comprises the following steps:

1), for each integral part of TRT system, set up respectively each parts class emulation module, and be each parts class emulation module editor and design variable, interface;

2) interface by each parts class emulation module connects parts class emulation module by actual TRT system, and regulates each module parameter to make system reach stable state;

3) analyze feature and the control method of actual TRT system punching course, increase by 3 program class emulation modules, be respectively punching press interference module, feed forward control module and PID feedback control module; Punching press interference module is for the impact of emulation punching course on blast furnace top pressure; Feed forward control module for utilizing in advance the rating curve of stator blade to control stator blade aperture when punching press; PID feedback control module compares and exports manipulated variable stator blade is controlled for top being installed with to definite value and value of feedback;

The gas flow that described feed forward control module goes out to flow into punching press tank according to the pressure reduction before and after ram valve and gas flow coefficient calculations when punching press, simultaneously according to the rating curve of stator blade, calculate stator blade institute to aperture that should gas flow, when punching press, utilize in advance the rating curve control stator blade aperture of stator blade;

Described PID feedback control module is installed with definite value r (t) by top and compares and form controlled deviation e (t) with value of feedback c (t):

e(t)=r(t)-c(t) （1），

Again by controlled deviation e (t) in proportion, by linear combination, form manipulated variable u (t) after differential, integral operation:

$u\left(t\right)=k_p*e\left(t\right)+\frac{1}{T_i}{\∫}_0^{t}e\left(t\right)\mathrm{dt}+T_d*\frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}---\left(2\right),$

In formula (2), u (t) is manipulated variable, k _pfor ratio control gain, T _ifor integration time constant, T _dfor derivative time constant, t is the time;

4) system emulation parameter is set, carries out simulation calculating;

Parts class emulation module in described step 1) comprises:

Border A: be the first level pressure node, simulation enters the pressure of the hot blast of blast furnace;

Pipeline A: comprise a pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Bf model: comprise upper container and lower container, connected by the first variable valve between upper container and lower container; The aperture of the first variable valve is fixed value;

Pipeline B: comprise b pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Stator blade: comprise the second variable valve, the aperture of the second variable valve is by manipulated variable u (t) and the feed forward control module controls of described PID feedback control module output;

Boundary B: be the second level pressure node, simulation is through the pipe network gas pressure after stator blade;

Ram valve: the switch of ram valve is controlled by described punching press interference module;

Punching press tank: comprise a container;

Border A, pipeline A, bf model, pipeline B, stator blade are connected in turn with boundary B, separate Yi Ge branch and be connected with ram valve between pipeline B and stator blade, and the other end of ram valve is connected with punching press tank;

Top in PID feedback control module is installed with definite value r (t) and is determined by technique specialty; Value of feedback c (t) is actual measured blast furnace top pressure value, i.e. upper container force value in bf model;

When concrete modular design, for the design of container:

Container is cylindrical, and its diameter is D, is highly L, and this Vessel Design has two interfaces, an import F _left, an outlet F _right, for front and back, connecting, each interface inside all comprises two variablees, flow q and pressure p, this interface automatically produces Connection equations when being connected with front and back module; Container model inside has following equation:

1) inlet and outlet pressure equates: F _left.p=F _right.p;

2) import and export the variable quantity that difference in flow equals container inner pressure $F_{\mathrm{left}}.q+F_{\mathrm{right}}.q=F_{\mathrm{right}}.p^{\′}\×\mathrm{\π}\×{\left(\frac{D}{2}\right)}^2\×L;$

In above formula, F _left.p be intake pressure, F _right.p be top hole pressure, F _left.q be inlet flow rate, F _right.q be rate of discharge, F _right.p ' be that container inner pressure is poor;

The concrete control program of described step 3) feed forward control module is:

Suppose that the pipeline pressure before ram valve is P ₀, punching press tank internal pressure is P ₁, P ₀and P ₁pressure reduction be Δ p and Δ p=P ₀-P ₁, first according to pressure differential deltap p, calculate the gas flow F that flows into punching press tank ₂:

$F_2=k*\sqrt{\mathrm{\Δp}},$

Wherein k is orifice coefficient, relevant with the form of ram valve;

Then according to this gas flow F ₂and the rating curve of stator blade calculates the corresponding aperture of stator blade, control in advance stator blade aperture.

2. TRT blast furnace top pressure according to claim 1 is controlled punching course feedforward feedback emulation mode, it is characterized in that: it also comprises that step 5), by simulation result and desired result comparison, debugs system emulation parameter, to obtain optimization control parameter.

3. for realizing TRT blast furnace top pressure claimed in claim 1, control the TRT blast furnace top pressure of punching course feedforward feedback emulation mode and control a punching course feedforward feedback analogue system, it is characterized in that: it comprises parts generic module and program generic module;

Wherein parts generic module comprises:

Border A: be the first level pressure node, simulation enters the pressure of the hot blast of blast furnace;

Pipeline A: comprise a pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Bf model: comprise upper container and lower container, connected by the first variable valve between upper container and lower container; The aperture of the first variable valve is fixed value;

Pipeline B: comprise b pipe joint road, every pipe joint road comprises fixedly valve and the container of aperture;

Stator blade: comprise the second variable valve, the aperture of the second variable valve is by described feed forward control module controls;

Boundary B: be the second level pressure node, simulation is through the pipe network gas pressure after stator blade;

Ram valve: the switch of ram valve is controlled by described punching press interference module;

Punching press tank: comprise a container;

Border A, pipeline A, bf model, pipeline B, stator blade are connected in turn with boundary B, separate Yi Ge branch and be connected with ram valve between pipeline B and stator blade, and the other end of ram valve is connected with punching press tank;

Program generic module comprises:

Punching press interference module, the impact for emulation punching course on blast furnace top pressure;

Feed forward control module for utilizing in advance the rating curve of stator blade to control stator blade aperture when punching press, when punching press, according to the pressure reduction before and after ram valve and gas flow coefficient calculations, flow into the gas flow of punching press tank, simultaneously according to the rating curve of stator blade, calculate stator blade institute to aperture that should gas flow, when punching press, utilize in advance the rating curve control stator blade aperture of stator blade;

PID feedback control module compares and exports manipulated variable stator blade is controlled for top being installed with to definite value and value of feedback, top is installed with to definite value r (t) and compares formation controlled deviation e (t) with value of feedback c (t):

e(t)=r(t)-c(t) （1），

Again by controlled deviation e (t) in proportion, by linear combination, form manipulated variable u (t) after differential, integral operation:

$u\left(t\right)=k_p*e\left(t\right)+\frac{1}{T_i}{\∫}_0^{t}e\left(t\right)\mathrm{dt}+T_d*\frac{\mathrm{de}\left(t\right)}{\mathrm{dt}}---\left(2\right),$

In formula (2), u (t) is manipulated variable, k _pfor ratio control gain, T _ifor integration time constant, T _dfor derivative time constant, t is the time.

4. TRT blast furnace top pressure according to claim 3 is controlled punching course feedforward feedback analogue system, it is characterized in that: it is set up based on Modelica language.

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