WO2011033662A1 - 内燃機関の制御装置 - Google Patents
内燃機関の制御装置 Download PDFInfo
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- WO2011033662A1 WO2011033662A1 PCT/JP2009/066417 JP2009066417W WO2011033662A1 WO 2011033662 A1 WO2011033662 A1 WO 2011033662A1 JP 2009066417 W JP2009066417 W JP 2009066417W WO 2011033662 A1 WO2011033662 A1 WO 2011033662A1
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- engine
- parameter
- transient
- throttle valve
- neural networks
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
- F02D41/1405—Neural network control
Definitions
- the present invention relates to a control device for an internal combustion engine, and more particularly to a control device that uses a neural network.
- Patent Document 1 discloses a parameter estimation device that estimates an air-fuel ratio using a neural network that inputs parameters indicating an operating state of an internal combustion engine, for example, throttle valve opening, intake pressure, engine speed, intake air temperature, and the like. It is shown.
- a plurality of engine operation areas are set according to the input parameters, and the calculation path in the neural network to be used is changed according to the engine operation area.
- the calculation path is switched when the engine operating region changes, so there is a possibility that the parameter estimation value may change suddenly with the switching.
- the control parameter is calculated, there is a problem that the calculation accuracy of the control parameter is temporarily lowered.
- the present invention has been made paying attention to this point, and controls an internal combustion engine capable of controlling the engine by appropriately using a plurality of neural networks corresponding to the operating state of the engine and improving the control accuracy.
- An object is to provide an apparatus.
- the present invention provides a control apparatus for an internal combustion engine, wherein a plurality of neural networks (SOMSS, SOMTS) for outputting a predetermined operation parameter (THCMD) of the engine are used to control the engine control parameter (IDTH). And a plurality of neural networks (SOMSS, SOMTS) each corresponding to a specific operating state of the engine, and the control parameter calculation means includes outputs of the plurality of neural networks (THCMDSS, A coordinator that calculates the predetermined operation parameter (THCMD) according to THCMDTS) is provided, and the control parameter (IDTH) is calculated according to an output (THCMD) of the coordinator.
- a plurality of neural networks SOMSS, SOMTS
- THCMDTS predetermined operation parameter
- engine control parameters are calculated using a plurality of neural networks that output predetermined engine operation parameters. Specifically, by using a plurality of neural networks, a plurality of values of a predetermined operation parameter are output, a predetermined operation parameter is calculated according to the plurality of values by a coordinator, and an engine control parameter is determined according to the predetermined operation parameter Is calculated.
- a coordinator By appropriately setting the operation characteristics of the coordinator, it is possible to obtain predetermined operating parameters that appropriately reflect the outputs of a plurality of neural networks, and to improve the control accuracy of the engine.
- the system further comprises transient state parameter calculating means for calculating at least one transient state parameter (DNE, DPB, DPI, DGAIRCMD) indicating the transient operation state of the engine, and one of the plurality of neural networks (SOMSS) is Corresponding to the steady operating state of the engine, the other one of the plurality of neural networks (SOMTS) corresponds to a transient operating state, and the coordinator is configured to transmit the at least one transient state parameter (DNE, DPB, DPI, DGAIRCMD). It is desirable to calculate a weighting coefficient (WTS, 1-WTS) of the plurality of neural network outputs in accordance with the predetermined operation parameter (THCMD) using the weighting coefficient.
- WTS weighting coefficient
- At least one transient state parameter indicating the transient operation state of the engine is calculated, and a plurality of neural network outputs, that is, the output of the neural network corresponding to the steady operation state of the engine, and the transient operation state of the engine
- a weighting factor for the output of the corresponding neural network is calculated according to the transient state parameter.
- a predetermined operation parameter is calculated using the weighting coefficient. Since the weighting coefficient is calculated according to the transient state parameter, the state of the transient operation is specifically reflected, and an appropriate predetermined operation parameter value can be obtained.
- the transient state parameter calculation means calculates at least one change amount (DNE, DPB, DPI, DGAIRCMD) of the operation parameter of the engine as the at least one transient state parameter, and as the change amount increases, It is desirable to increase the weighting coefficient (WTS) of the output of the neural network (SOMTS) corresponding to the transient operation state.
- the amount of change in the engine operating parameter is calculated as the transient state parameter, and the weighting coefficient of the output of the neural network corresponding to the transient operating state increases as the amount of change increases.
- the engine operating state can be appropriately reflected.
- FIG. 1 is a diagram showing a configuration of an internal combustion engine and a control device thereof according to an embodiment of the present invention.
- An internal combustion engine (hereinafter referred to as “engine”) 1 is a diesel engine that directly injects fuel into a cylinder, and a fuel injection valve 9 is provided in each cylinder.
- the fuel injection valve 9 is electrically connected to an electronic control unit (hereinafter referred to as “ECU”) 20. It is controlled by the ECU 20.
- ECU electronice control unit
- the engine 1 includes an intake pipe 2, an exhaust pipe 4, and a turbocharger 8.
- the turbocharger 8 includes a turbine 11 having a turbine wheel 10 that is rotationally driven by the kinetic energy of exhaust, and a compressor 16 having a compressor wheel 15 connected to the turbine wheel 10 via a shaft 14.
- the compressor wheel 15 pressurizes (compresses) air sucked into the engine 1.
- the turbine 11 has a plurality of variable vanes 12 (only two are shown) that are driven to change the flow rate of exhaust gas blown to the turbine wheel 10, and an actuator (not shown) that drives the variable vanes to open and close.
- the flow rate of the exhaust gas blown to the turbine wheel 10 can be changed by changing the opening degree of the variable vane 12 (hereinafter referred to as “vane opening degree”) ⁇ vgt so that the rotational speed of the turbine wheel 10 can be changed. It is configured.
- the actuator that drives the variable vane 12 is connected to the ECU 20, and the vane opening degree ⁇ vgt is controlled by the ECU 20. More specifically, the ECU 20 supplies a control signal with a variable duty ratio to the actuator, thereby controlling the vane opening ⁇ vgt.
- the configuration of a turbocharger having a variable vane is widely known, and is disclosed in, for example, Japanese Patent Laid-Open No. 1-208501.
- An intercooler 18 is provided on the downstream side of the compressor 16 in the intake pipe 2, and a throttle valve 3 is provided on the downstream side of the intercooler 18.
- the throttle valve 3 is configured to be opened and closed by an actuator 19, and the actuator 19 is connected to the ECU 20.
- the ECU 20 controls the opening degree of the throttle valve 3 via the actuator 19.
- the exhaust gas recirculation passage 5 is provided with an exhaust gas recirculation control valve (hereinafter referred to as “EGR valve”) 6 for controlling the exhaust gas recirculation amount (EGR amount).
- the EGR valve 6 is an electromagnetic valve having a solenoid, and the valve opening degree is controlled by the ECU 20.
- the EGR valve 6 is provided with a lift sensor 7 for detecting the valve opening degree (valve lift amount) LACT, and the detection signal is supplied to the ECU 20.
- the exhaust gas recirculation passage 5 and the EGR valve 6 constitute an exhaust gas recirculation device.
- the intake pipe 2 includes an intake air flow rate sensor 21 that detects an intake air flow rate GA, a boost pressure sensor 22 that detects an intake pressure (supercharge pressure) PB downstream of the compressor 16, and an intake air temperature that detects an intake air temperature TI.
- a sensor 23 and an intake pressure sensor 24 for detecting the intake pressure PI are provided. These sensors 21 to 24 are connected to the ECU 20, and detection signals from the sensors 21 to 24 are supplied to the ECU 20.
- a lean NOx catalyst 31 that is a NOx purification device that purifies NOx contained in the exhaust, and particulate matter (mainly composed of soot) contained in the exhaust are collected.
- a particulate matter filter 32 is provided.
- the lean NOx catalyst 31 captures NOx in a state where the oxygen concentration in the exhaust is relatively high, that is, in a state where the concentration of the reducing components (HC, CO) is relatively low, and captures in a state where the concentration of the reducing component in the exhaust is high. NOx is reduced by the reducing component and released.
- a rotation speed sensor 28 is connected to the ECU 20, and detection signals from these sensors are supplied to the ECU 20.
- the engine speed sensor 28 supplies the ECU 20 with a crank angle pulse generated at every predetermined crank angle (for example, 6 degrees) and a TDC pulse generated in synchronization with the timing at which the piston of each cylinder of the engine 1 is located at the top dead center. To do.
- the ECU 20 shapes input signal waveforms from various sensors, corrects the voltage level to a predetermined level, converts an analog signal value into a digital signal value, a central processing unit (hereinafter referred to as “CPU”).
- CPU central processing unit
- the ECU 20 performs an engine operation state (mainly, fuel injection control by the fuel injection valve 9, exhaust gas recirculation control by the EGR valve 6, supercharging pressure control by the variable vane 12 in accordance with the engine speed NE and the engine load target value Pmecmd).
- the engine load target value Pmecmd is calculated according to the accelerator pedal operation amount AP, and is set to increase as the accelerator pedal operation amount AP increases.
- the ECU 20 calculates the target throttle valve opening THCMD according to the target intake air amount GAIRCMD [g / sec] using a neural network to which the self-organizing map algorithm is applied (hereinafter simply referred to as “self-organizing map”).
- the actuator 19 is driven so that the detected throttle valve opening TH matches the target throttle valve opening THCMD.
- the target throttle valve opening is performed using the steady state model self-organizing map SOMSS corresponding to the steady operating state of the engine 1 and the transient state model self organizing map SOMTS corresponding to the transient operating state of the engine 1.
- the degree THCMD is calculated.
- An input data vector xj composed of N elements is defined by the following equation (1), and a weight vector wi of each neuron constituting the self-organizing map is defined by the following equation (2).
- the number of neurons is M. That is, the parameter i takes a value from 1 to M.
- the initial value of the weight vector wi is given using a random number.
- the Euclidean distance DWX
- between the input data vector xj and the corresponding neuron weight vector wi is calculated, and the neuron with the smallest distance DWX is defined as the winner neuron.
- the Euclidean distance DWX is calculated by the following formula (3).
- the weight vector wi of the neuron included in the winner neuron and its neighboring neuron set Nc is updated by the following equation (4).
- ⁇ (t) is a learning coefficient
- t is the number of learnings.
- the neuron weight vector wi not included in the neuron set Nc maintains the previous value as shown in the following equation (5).
- wi (t + 1) wi (t) (5)
- the neuron set Nc is also a function of the learning count t, and is set so that the neighborhood range is narrowed as the learning count t increases.
- the weight vectors of the winner neuron and the neighboring neurons are corrected so as to approach the input data vector.
- the arrangement of M neurons reflects the distribution state of the input data vectors.
- the input data vector is represented as a two-dimensional vector for the sake of simplicity and the arrangement is represented on a plane, and the input data vector is uniformly distributed on the plane, the neuron arrangement after learning is flat. Distributed uniformly on the top.
- the distribution of input data vectors is biased (dense / dense), the distribution state of neurons is the same biased distribution state.
- the self-organizing map obtained in this way may be made to have a more appropriate arrangement of neurons by further applying a learning vector quantization (LVQ) algorithm.
- LVQ learning vector quantization
- FIG. 2 shows a steady state model self-organizing map SOMSS for calculating the steady state target throttle valve opening THCMDSS in the present embodiment as a two-dimensional map.
- This two-dimensional map is defined by a target intake air amount GAIRCMD and a supercharging pressure PB, which are two input parameters that are the most dominant factors.
- the input data vector xTH is defined by the following formula (10). That is, the input parameters are the target intake air amount GAIRCMD, the supercharging pressure PB, the intake pressure PI, and the engine speed NE.
- xTH (GAIRCMD, PB, PI, NE) (10)
- each region RNR i Is defined.
- the map shown in FIG. 2 is obtained by performing learning corresponding to a standard engine (a new engine and an engine having an average operating characteristic).
- the input data applied to learning is plotted with black circles.
- a region RNRi including an operating point on the map at that time determined by the target intake air amount GAIRCMD and the supercharging pressure PB which are elements of the input data vector xTH is selected, and the neuron NRi representing the region RNRi is selected.
- the steady state target throttle valve opening THCMDSS is calculated by applying the weighting coefficient vector Ci and the input data vector xTH associated with to the following equation (12).
- This expression (12) corresponds to a mathematical expression that defines the steady state model in the present embodiment.
- THCMDSS C1i x GAIRCMD + C2i x PB + C3i * PI + C4i * NE + C0i (12)
- the change amount of the input parameter of the above-described steady state model self-organizing map SOMSS is applied as an input parameter. That is, a target intake air amount change amount DGAIRCMD, a supercharging pressure change amount DPB, an intake pressure change amount DPI, and a rotational speed change amount DNE are calculated by the following equations (21) to (24), and the transient state model self-organization is calculated.
- a target intake air amount change amount DGAIRCMD a supercharging pressure change amount DPB, an intake pressure change amount DPI, and a rotational speed change amount DNE are calculated by the following equations (21) to (24), and the transient state model self-organization is calculated.
- Applied as an input parameter for the map SOMTS. “K” in these mathematical expressions is a discretization time discretized at the calculation cycle TC of the target throttle valve opening THCMD.
- DGAIRCMD GAIRCMD (k) ⁇ GAIRCMD (k ⁇ 1) (21)
- DPB PB (k) ⁇ PB (k ⁇ 1) (22)
- DPI PI (k) ⁇ PI (k ⁇ 1) (23)
- DNE NE (k) ⁇ NE (k ⁇ 1) (24)
- FIG. 3 shows a transient state model self-organizing map SOMTS for calculating the transient state target throttle valve opening THCMDTS in the present embodiment as a two-dimensional map.
- This two-dimensional map is defined by the target intake air amount change amount DGAIRCMD and the supercharging pressure change amount DPB.
- CDi (CD0i, CD1i, CD2i, CD3i, CD4i) (26)
- the transient state target throttle valve opening THCMDTS is calculated by the following equation (27).
- This expression (27) corresponds to a mathematical expression that defines the transient state model in the present embodiment.
- THCMDTS CD1i ⁇ DGAIRCMD + CD2i ⁇ DPB + CD3i ⁇ DPI + CD4i ⁇ DNE + CD0i
- FIG. 4 is a diagram showing the relationship between the intake air amount GAIR [g / sec] and the throttle valve opening TH, and the curves L1 to L5 indicate that the engine speed NE is 1000, 1500, 2000, 2500, and This corresponds to the state of 3000 rpm.
- the target intake air amount GAIRCMD set according to the accelerator pedal operation amount AP and the engine speed NE multiplies the maximum intake air amount GAIRMAX by a predetermined threshold coefficient KTH (for example, 0.95).
- the target throttle valve opening THCMD is set to the maximum opening THMAX (for example, “90 degrees”). Thereby, the calculation load of the CPU of the ECU 20 can be reduced without impairing the controllability of the intake air amount.
- the target throttle valve opening THCMD is calculated using the above-described self-organizing map. As a result, the optimum throttle valve opening can be set for controlling the actual intake air amount GAIR to the target intake air amount GAIRCMD.
- FIG. 5 is a flowchart of a process for calculating the target throttle valve opening THCMD, and this process is executed by the CPU of the ECU 20 every predetermined time TC.
- a GAIRCMD map (not shown) is searched according to the accelerator pedal operation amount AP and the engine speed NE to calculate a target intake air amount GAIRCMD.
- the GAIRCMD map is set so that the target intake air amount GAIRCMD increases as the accelerator pedal operation amount AP increases, and the target intake air amount GAIRCMD increases as the engine speed NE increases.
- step S12 a GAIRMAX map (not shown) is searched according to the engine speed NE and the boost pressure PB, and the maximum intake air amount GAIRMAX is calculated.
- the GAIRMAX map is set so that the maximum intake air amount GAIRMAX increases as the engine speed NE increases, and the maximum intake air amount GAIRMAX increases as the boost pressure PB increases.
- step S13 the determination threshold GAIRTH is calculated by multiplying the maximum intake air amount GAIRMAX by a predetermined threshold coefficient KTH.
- step S14 it is determined whether or not the target intake air amount GAIRCMD is smaller than the determination threshold value GAIRTH. If the answer to step S14 is affirmative (YES), the SOM calculation process shown in FIG. A target throttle valve opening THCMD is calculated using the maps SOMSS and SOMTS (step S15).
- step S14 when the target intake air amount GAIRCMD is equal to or larger than the determination threshold GAIRTH, the target throttle valve opening THCMD is set to the maximum opening THMAX.
- step S21 in FIG. 6 the target intake air amount change amount DGAIRCMD, the supercharging pressure change amount DPB, the intake pressure change amount DPI, and the rotation speed change amount DNE are calculated by the above-described equations (21) to (24).
- step S22 the steady state target throttle valve opening THCMDSS is calculated using the steady state model self-organizing map SOMSS.
- step S23 the transient state target throttle valve opening THCMDTS is calculated using the transient state model self-organizing map SOMTS. Is calculated.
- step S24 the W1 table shown in FIG. 7A is searched according to the rotational speed change amount DNE, and the first weight correction coefficient W1 is calculated.
- the W1 table is set so that the first weight correction coefficient W1 increases as the rotational speed change amount DNE increases (however, the maximum value is “1.0”).
- step S25 the W2 table shown in FIG. 7B is searched according to the boost pressure change amount DPB, and the second weight correction coefficient W2 is calculated.
- the W2 table is set so that the second weight correction coefficient W2 increases as the boost pressure change amount DPB increases (however, the maximum value is “1.0”).
- step S26 the W3 table shown in FIG. 7C is retrieved according to the intake pressure change amount DPI to calculate the third weight correction coefficient W3.
- the W3 table is set so that the third weight correction coefficient W3 increases as the intake pressure change amount DPI increases (however, the maximum value is “1.0”).
- step S27 the W4 table shown in FIG. 7D is searched according to the target intake air amount change amount DGAIRCMD to calculate the fourth weight correction coefficient W4.
- the W4 table is set so that the fourth weight correction coefficient W4 increases as the target intake air amount change amount DGAIRCMD increases (however, the maximum value is “1.0”).
- step S28 the first to fourth weight correction coefficients W1 to W4 are applied to the following equation (28) to calculate the transient state weighting coefficient WTS.
- WNE, WPB, WPI, and WGAIR in Expression (25) are experimentally calculated in advance for the rotational speed change amount DNE, the boost pressure change amount DPB, the intake pressure change amount DPI, and the target intake air amount change amount DGAIRCMD, respectively. It is a weighting coefficient value that has been set.
- the weighting coefficient values WNE, WPB, WPI, and WGAIR are all set to values larger than “0” and smaller than “1”.
- WTS W1 ⁇ WNE + W2 ⁇ WPB + W3 ⁇ WPI + W4 ⁇ WGAIR (28)
- the transient state weighting coefficient WTS is subjected to limit processing so as not to exceed “1” in steps S29 and S30.
- step S31 the transient state weighting coefficient WTS, the steady state target throttle valve opening THCMDSS, and the transient state target throttle valve opening THCMDTS are applied to the following equation (29) to calculate the target throttle valve opening THCMD.
- THCMD (1 ⁇ WTS) ⁇ THCMDS + WTS ⁇ THCMDTS (29)
- the CPU of the ECU 20 calculates a drive parameter IDTH for driving the actuator 19 so that the detected throttle valve opening TH matches the target throttle valve opening THCMD calculated by the processing of FIGS. Valve opening control (intake air amount control) is performed.
- the steady state model self-organizing map SOMSS that outputs the steady state target throttle valve opening THCMDSS and the transient state model self-organizing map SOMTS that outputs the transient state target throttle valve opening THCMDTS are used.
- the target throttle valve opening THCMD is calculated, and the drive parameter IDTH of the actuator 19 is calculated according to the target throttle valve opening THCMD.
- the final target throttle valve opening THCMD is set according to the steady state target throttle valve opening THCMDSS and the transient state target throttle valve opening THCMDTS by the processing of steps S24 to S31 in FIG. 6 corresponding to the coordinator.
- the drive parameter IDTH which is an engine control parameter, is calculated according to the target throttle valve opening THCMD.
- the target throttle valve opening THCMD in which the outputs of the two self-organizing maps are appropriately reflected can be obtained.
- the control accuracy of the intake air amount can be improved.
- a rotational speed change amount DNE a supercharging pressure change amount DPB, an intake pressure change amount DPI, and a target intake air amount change amount DGAIRCMD, which are transient state parameters indicating a transient operation state, are calculated, and the transient amount is changed according to these change amounts.
- a transient state weighting coefficient WTS that is a weighting coefficient of the state target throttle valve opening THCMDTS and a weighting coefficient (1-WTS) of the steady state target throttle valve opening THCMDSS are calculated. Then, the target throttle valve opening THCMD is calculated using the weighting coefficient WTS, (1-WTS). Since the weighting coefficient WTS specifically reflects the operation state (steady operation state, transient operation state, or intermediate operation state thereof) of the engine 1, the target throttle valve opening THCMD is set to an appropriate value. be able to.
- the transient state weighting coefficient WTS is set to increase as the rotational speed change amount DNE, the supercharging pressure change amount DPB, the intake pressure change amount DPI, and the target intake air amount change amount DGAIRCMD increase.
- the engine operating state can be appropriately reflected in the weighting coefficient WTS.
- the ECU 20 constitutes a control parameter calculation unit and a coordinator. That is, the target throttle valve opening THCMD corresponds to a predetermined operation parameter, the drive parameter IDTH of the actuator 19 corresponds to an engine control parameter, the process of FIG. 5 corresponds to a part of the control parameter calculation means, and the process of FIG. Corresponds to the coordinator.
- the rotational speed change amount DNE, the supercharging pressure change amount DPB, the intake pressure change amount DPI, and the target intake air amount change amount DGAIRCMD are used as the transient state parameters. Any one of these, or a combination of two or three variations may be used as a transient state parameter.
- the transient state weighting coefficient WTS is calculated by the following equation (31), and when the target intake air amount change amount DGAIRCMD and the supercharging pressure change amount DPB are used.
- the transient state weighting coefficient WTS is calculated by the following equation (32).
- WTS W4 ⁇ WGAIR (31)
- WTS W2 ⁇ DPB + W4 ⁇ WGAIR (32)
- the target throttle valve opening THCMD is an example of the predetermined operation parameter.
- the NOx amount exhausted from the engine 1, the exhaust gas recirculation rate (or the exhaust gas recirculation amount or the target exhaust gas recirculation amount), the intake The amount of air may be set as a predetermined operation parameter, and the fuel injection amount (control parameter) may be calculated according to the calculated predetermined operation parameter.
- the input parameters of the steady state model self-organizing map for calculating the NOx amount include engine speed NE, fuel supply amount (fuel injection amount), air-fuel ratio, temperature of exhaust gas flowing into the turbine 11, and supercharging pressure PB. ,
- the intake pressure PI, and the intake air amount GAIR are applied, and the change amount of the input parameter of the steady state model self-organizing map is applied as the input parameter of the transient state model self-organizing map.
- the input parameters of the steady-state model self-organizing map for calculating the exhaust gas recirculation rate include boost pressure PB, intake pressure PI, EGR valve opening, intake air amount GAIR, fuel / air ratio, engine speed NE, turbine 11 vane opening degree ⁇ vgt and recirculation exhaust gas temperature are applied, and the input parameter variation of the steady state model self-organizing map is applied as the input parameter of the transient state model self-organizing map.
- the throttle valve opening TH As input parameters of the steady state model self-organizing map for calculating the intake air amount, the throttle valve opening TH, the supercharging pressure PB, the intake pressure PI, and the engine speed NE are applied, and the transient state model self-organizing is applied.
- the transient state model self-organizing As an input parameter of the map, a change amount of the input parameter of the steady state model self-organizing map is applied.
- the self-organizing map is used as the neural network.
- the present invention is not limited to this, and a neural network known as a so-called perceptron may be used.
- the present invention can also be applied to the control of a marine vessel propulsion engine such as an outboard motor having a vertical crankshaft.
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Abstract
Description
この装置では、入力パラメータに応じて複数の機関運転領域が設定されており、使用するニューラルネットワークにおける演算経路が機関運転領域に応じて変更される。
図1は本発明の一実施形態にかかる内燃機関、及びその制御装置の構成を示す図である。内燃機関(以下「エンジン」という)1は、シリンダ内に燃料を直接噴射するディーゼルエンジンであり、各気筒に燃料噴射弁9が設けられている。燃料噴射弁9は、電子制御ユニット(以下「ECU」という)20に電気的に接続されており、燃料噴射弁9の開弁時期及び開弁時間は、すなわち燃料噴射時期及び燃料噴射量は、ECU20により制御される。
N個の要素からなる入力データベクトルxjを下記式(1)で定義し、自己組織化マップを構成する各ニューロンの重みベクトルwiを下記式(2)で定義する。ニューロンの数はM個とする。すなわち、パラメータiは、1からMまでの値をとる。重みベクトルwiの初期値は乱数を用いて与えられる。
xj=(xj1,xj2,…,xjN) (1)
wi=(wi1,wi2,…,wiN) (2)
wi(t+1)=wi(t)+α(t)(xj-wi(t)) (4)
wi(t+1)=wi(t) (5)
xTH=(GAIRCMD,PB,PI,NE) (10)
Ci=(C0i,C1i,C2i,C3i,C4i) (11)
THCMDSS=C1i×GAIRCMD+C2i×PB
+C3i×PI+C4i×NE+C0i (12)
DGAIRCMD=GAIRCMD(k)-GAIRCMD(k-1) (21)
DPB=PB(k)-PB(k-1) (22)
DPI=PI(k)-PI(k-1) (23)
DNE=NE(k)-NE(k-1) (24)
xTHD=(DGAIRCMD,DPB,DPI,DNE) (25)
CDi=(CD0i,CD1i,CD2i,CD3i,CD4i)
(26)
THCMDTS=CD1i×DGAIRCMD+CD2i×DPB
+CD3i×DPI+CD4i×DNE+CD0i (27)
ステップS11では、アクセルペダル操作量AP及びエンジン回転数NEに応じてGAIRCMDマップ(図示せず)を検索し、目標吸入空気量GAIRCMDを算出する。GAIRCMDマップは、アクセルペダル操作量APが増加するほど目標吸入空気量GAIRCMDが増加し、かつエンジン回転数NEが増加するほど目標吸入空気量GAIRCMDが増加するように設定されている。
WTS=W1×WNE+W2×WPB+W3×WPI+W4×WGAIR
(28)
THCMD=(1-WTS)×THCMDSS+WTS×THCMDTS
(29)
WTS=W4×WGAIR (31)
WTS=W2×DPB+W4×WGAIR (32)
2 吸気管
19 アクチュエータ
20 電子制御ユニット(制御パラメータ算出手段、コーディネータ)
22 過給圧センサ
24 吸気圧センサ
27 アクセルセンサ
28 エンジン回転数センサ
Claims (3)
- 内燃機関の制御装置において、
前記機関の所定運転パラメータを出力する複数のニューラルネットワークを用いて、前記機関の制御パラメータを算出する制御パラメータ算出手段を備え、前記複数のニューラルネットワークはそれぞれ前記機関の特定の運転状態に対応し、
前記制御パラメータ算出手段は、
前記複数のニューラルネットワークの出力に応じて前記所定運転パラメータを算出するコーディネータを備え、
該コーディネータの出力に応じて前記制御パラメータを算出することを特徴とする内燃機関の制御装置。 - 前記機関の過渡運転状態を示す少なくとも1つの過渡状態パラメータを算出する過渡状態パラメータ算出手段をさらに備え、
前記複数のニューラルネットワークの1つは前記機関の定常運転状態に対応し、前記複数のニューラルネットワークの他の1つは過渡運転状態に対応し、
前記コーディネータは、前記少なくとも1つの過渡状態パラメータに応じて前記複数のニューラルネットワーク出力の重み付け係数を算出し、該重み付け係数を用いて前記所定運転パラメータを算出する請求項1の制御装置。 - 前記過渡状態パラメータ算出手段は、前記機関の運転パラメータの少なくとも1つの変化量を前記少なくとも1つの過渡状態パラメータとして算出し、前記変化量が増加するほど、前記過渡運転状態に対応するニューラルネットワークの出力の重み付け係数を増加させる請求項2の制御装置。
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PCT/JP2009/066417 WO2011033662A1 (ja) | 2009-09-18 | 2009-09-18 | 内燃機関の制御装置 |
JP2011531735A JP5377656B2 (ja) | 2009-09-18 | 2009-09-18 | 内燃機関の制御装置 |
DE112009005242.8T DE112009005242B4 (de) | 2009-09-18 | 2009-09-18 | Regelungs-/Steuerungssystem für einen Verbrennungsmotor |
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PCT/JP2009/066417 WO2011033662A1 (ja) | 2009-09-18 | 2009-09-18 | 内燃機関の制御装置 |
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Cited By (1)
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EP3623610A1 (en) | 2018-09-14 | 2020-03-18 | Toyota Jidosha Kabushiki Kaisha | Control device of internal combustion engine |
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JPH10331701A (ja) * | 1998-04-06 | 1998-12-15 | Hitachi Ltd | 制御装置 |
JP2002251597A (ja) * | 2001-02-23 | 2002-09-06 | Yamaha Motor Co Ltd | 最適解探索装置、最適化アルゴリズムによる制御対象の制御装置及び最適解探索プログラム |
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JPH01208501A (ja) | 1988-02-12 | 1989-08-22 | Honda Motor Co Ltd | 可変容量タービン |
JPH04302304A (ja) * | 1991-03-29 | 1992-10-26 | Toshiba Corp | 非線形プロセス制御装置 |
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JPH1185719A (ja) * | 1997-09-03 | 1999-03-30 | Matsushita Electric Ind Co Ltd | パラメータ推定装置 |
JP2000213395A (ja) * | 1999-01-25 | 2000-08-02 | Matsushita Electric Ind Co Ltd | 空燃比制御装置 |
EP2085593B1 (en) * | 2008-01-29 | 2010-06-30 | Honda Motor Co., Ltd. | Control system for internal combustion engine |
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2009
- 2009-09-18 WO PCT/JP2009/066417 patent/WO2011033662A1/ja active Application Filing
- 2009-09-18 DE DE112009005242.8T patent/DE112009005242B4/de not_active Expired - Fee Related
- 2009-09-18 JP JP2011531735A patent/JP5377656B2/ja not_active Expired - Fee Related
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JPH06249007A (ja) * | 1993-02-26 | 1994-09-06 | Toyota Motor Corp | 車両の駆動力制御装置 |
JPH1011105A (ja) * | 1996-06-20 | 1998-01-16 | Yamaha Motor Co Ltd | 状態制御方式 |
JPH10331701A (ja) * | 1998-04-06 | 1998-12-15 | Hitachi Ltd | 制御装置 |
JP2002251597A (ja) * | 2001-02-23 | 2002-09-06 | Yamaha Motor Co Ltd | 最適解探索装置、最適化アルゴリズムによる制御対象の制御装置及び最適解探索プログラム |
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EP3623610A1 (en) | 2018-09-14 | 2020-03-18 | Toyota Jidosha Kabushiki Kaisha | Control device of internal combustion engine |
US11047325B2 (en) | 2018-09-14 | 2021-06-29 | Toyota Jidosha Kabushiki Kaisha | Control device of internal combustion engine |
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JPWO2011033662A1 (ja) | 2013-02-07 |
JP5377656B2 (ja) | 2013-12-25 |
DE112009005242T5 (de) | 2012-09-06 |
DE112009005242B4 (de) | 2015-02-12 |
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