CN111271182A - Engine control system capable of accelerating ECU development - Google Patents
Engine control system capable of accelerating ECU development Download PDFInfo
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- CN111271182A CN111271182A CN202010092776.6A CN202010092776A CN111271182A CN 111271182 A CN111271182 A CN 111271182A CN 202010092776 A CN202010092776 A CN 202010092776A CN 111271182 A CN111271182 A CN 111271182A
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
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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
- F02D41/0002—Controlling intake air
- F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
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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
- F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
- F02D41/0047—Controlling exhaust gas recirculation [EGR]
- F02D41/0077—Control of the EGR valve or actuator, e.g. duty cycle, closed loop control of position
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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
- F02D41/30—Controlling fuel injection
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/3809—Common rail control systems
- F02D41/3836—Controlling the fuel pressure
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
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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
- F02D41/30—Controlling fuel injection
- F02D41/38—Controlling fuel injection of the high pressure type
- F02D41/40—Controlling fuel injection of the high pressure type with means for controlling injection timing or duration
- F02D41/401—Controlling injection timing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0602—Fuel pressure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Testing Of Engines (AREA)
Abstract
The invention discloses an engine control system capable of accelerating ECU development, which relates to the technical field of electronic control of engines and comprises the following components: the sensor module is used for acquiring information of the engine and generating a sensor signal; the driving circuit module is used for connecting the sensor module and the actuator module and conditioning signals; the programmable bottom layer driving module is used for connecting the driving circuit module and the central processing module and converting and calculating signals; the central processing module is used for calculating a control signal for controlling the actuator according to the sensor signal and then transmitting the control signal for controlling the actuator to the programmable bottom layer driving module; and the actuator module is used for receiving the signal conditioned by the driving circuit module and controlling the engine.
Description
Technical Field
The invention relates to the technical field of electronic control of engines, in particular to an engine control system capable of accelerating ECU development.
Background
The development of Electronic Control Units (ECU) of automobile engines relates to many fields such as computer technology, automatic Control, embedded systems, engine technology, etc., and is the most complex system in the electrical Control systems of automobiles. The engine ECU software development is the core of automobile electronic technology and is also the highest part of the technology content. The engine ECU development process is a system-level solution, the development difficulty is high, and the development process is long. The traditional engine ECU development mode comprises five processes of functional design, rapid control prototype, target code generation, hardware-in-the-loop test and calibration, each process can enter the next process development only after the previous process is finished, and the whole ECU development period is long and the workload is large. At present, the updating iteration speed of engine products is faster and faster along with the requirement of emission regulations, however, the number of sensors and actuators of an electric control system is more and more, the control strategy becomes more complex, and the difficulty of shortening the development period of the ECU is huge.
The continuous extension of engine product series, the number of parameters to be calibrated increases exponentially along with performance indexes, and the calibration workload is increased greatly and the pressure of product research and development cycle is shortened.
Disclosure of Invention
The invention aims to provide an engine control system capable of accelerating ECU development, which can directly use a designed control strategy for controlling the operation of a real engine in a rapid control prototype stage by a programmable function of a programmable bottom layer driving module, can solve the conflict and the problem of design, development, test and verification links in the early stage of ECU development and shorten the ECU development period.
To solve the above problems, a first aspect of the present invention provides an engine control system capable of accelerating development of an ECU, comprising:
the sensor module is used for acquiring information of the engine and generating a sensor signal. The sensors include, but are not limited to, a crankshaft sensor, a camshaft sensor, a high pressure common rail pressure sensor, an accelerator pedal sensor, a coolant temperature sensor, a VNT position sensor, an ECR position sensor, an intake air flow sensor, and a boost pressure sensor of the engine. The voltage value of the sensor is collected and then calculated as a different physical quantity, for example, the voltage value is collected by the coolant temperature sensor and then calculated as a temperature value.
And the driving circuit module is used for connecting the sensor module and the actuator module and conditioning signals. The driving circuit module conditions signals received by the sensor module, such as a crankshaft sensor, a camshaft sensor, a high-pressure common rail pressure sensor, an accelerator pedal sensor, a coolant temperature sensor, a VNT position sensor, an ECR position sensor, an intake air flow sensor and a boost pressure sensor of the engine, and sends the conditioned signals to the programmable bottom layer driving module. And the control level signal output by the programmable bottom layer driving module is driven and amplified to control an actuator on the engine, and the driving comprises oil injection driving, fuel metering unit driving, VNT (Variable Nozzle Turbocharger) driving and EGR (Exhaust Gas Recirculation) driving.
And the programmable bottom layer driving module is used for connecting the driving circuit module and the central processing module and converting and calculating signals. The programmable function of the programmable bottom layer driving module is realized by an FPGA (Field programmable gate Array), and the basic structure of the FPGA comprises a programmable input/output unit, a configurable logic block, a digital clock management module, an embedded block RAM, a wiring resource, an embedded special hard core and a bottom layer embedded functional unit. The conversion and calculation specifically include: and receiving the sensor signal conditioned by the driving circuit module, acquiring sensor data, calculating in real time, and sending the calculated sensor signal to a central processing module. And after receiving the control signal of the central processing module, converting the control signal into a control level signal and sending the control level signal to the driving circuit module. The programmable bottom layer driving module also calculates the crank angle and the engine speed of the engine according to a crank shaft and cam shaft position sensor of the engine; and generating an oil injection control level signal according to the oil injection pulse width and the oil injection time which are provided by the central processing module.
And the central processing module is used for calculating a control signal for controlling the actuator according to the sensor signal and then transmitting the control signal for controlling the actuator to the programmable bottom layer driving module. The central processing module is mainly used for calculating a control strategy and simultaneously communicates with the rack equipment through the router.
And the actuator module is used for receiving the signal conditioned by the driving circuit module and controlling the engine. The actuator module comprises an oil sprayer, an air injection electromagnetic valve, a fuel metering unit and an EGR (exhaust gas recirculation) electromagnetic valve.
The central processing module also comprises a communication interface and a control strategy submodule, wherein the communication interface is used for connecting the programmable bottom layer driving module and the central processing module, defines the interfaces of the central processing module and the programmable bottom layer driving module, realizes the connection of the output of the programmable bottom layer driving module and the input of the central processing module, and realizes the connection of the output of the central processing module and the input of the programmable bottom layer driving module. The communication interface module is specifically an interface between ECU bottom layer software and a control strategy model, comprises various sensor signals transmitted to an application layer from the bottom layer and various actuator signals transmitted to the bottom layer from the application layer, and is an input/output signal of the control strategy model. The communication interface module comprises a discrete signal input interface, a camshaft speed interface, a camshaft state interface, a crankshaft angle interface, a crankshaft average speed interface, a crankshaft real-time speed interface, a crankshaft state interface, a discrete output signal diagnosis state interface, an engine state interface, a crankshaft signal event interface, an oil injector diagnosis state interface, an oil injector oil quantity interface, an oil injector angle interface, an injection frequency interface, a pulse width input interface, a pulse width output diagnosis state interface and a sensor input; the user can also access the control strategy developed by self-definition and test and verify the function of the control strategy.
And the control strategy submodule is used for calculating a value of a control actuator according to the value acquired by the engine sensor and the required working condition of the engine, and then transmitting the value to the programmable bottom layer driving module to realize level output. And the control strategy submodule is used for calculating a control signal for controlling the actuator according to the engine demand working condition and the signal acquired by the engine sensor, and then transmitting the control signal to the programmable bottom layer driving module to realize level output. The control strategy sub-module comprises a starting control strategy, an idle speed control algorithm, an engine state coordinator, an oil injection control strategy, a rail pressure control strategy and the like, and also comprises parameters capable of being calibrated and monitored measuring points.
The further technical scheme is that the programmable bottom layer driving module is based on an FPGA chip and comprises the following sub-modules:
and the signal modulation and demodulation submodule is used for modulating the sensor signal of the driving circuit module and then transmitting the modulated sensor signal to the central processing module, and demodulating the received control signal of the central processing module and then transmitting the demodulated control signal to the driving circuit module.
And the communication and storage sub-module is used for carrying out signal transmission with the communication interface and the driving circuit module and also used for sending the transient data to the central processing module for storage. The transient data may be sent to the central processing module for storage by DMA (Direct Memory Access).
And the crankshaft camshaft signal tracking submodule is used for synchronously tracking the phase of the crankshaft camshaft signal acquired by the sensor module, calculating the rotating speed and the crankshaft angle of the engine and transmitting the signals to the central processing module. When the crankshaft and camshaft signal tracking submodule calculates the rotating speed of the engine, the crankshaft and camshaft digital signals are respectively processed, the processing process comprises the steps of identifying the falling edge of the digital signal, filtering a noise signal, calculating the signal period, then calculating the instantaneous rotating speed of the engine according to 1 signal period, and the arithmetic mean value of 60 signal periods is the average rotating speed of the engine.
The further technical scheme is that the driving circuit module comprises the following sub-modules:
and the signal acquisition submodule is used for receiving the original sensor signal acquired by the sensor module.
And the signal modulation and demodulation submodule is used for conditioning the original signal of the sensor and converting and amplifying the received control signal of the programmable bottom layer driving module into an analog current waveform.
And the signal transmission submodule is used for respectively carrying out signal transmission with the programmable bottom layer driving module, the sensor module and the controller module.
According to a further technical scheme, the signal modulation and demodulation sub-module comprises;
and the diesel injection modulation strategy is used for converting and amplifying the received control signal of the programmable bottom layer driving module into an analog current waveform for diesel injection.
A second fuel injection modulation strategy for converting and amplifying the received programmable bottom drive module control signal into an analog current waveform for a second fuel injection; the second fuel may be one of natural gas, gasoline, methanol.
Further technical solution is that the central processing module further includes the following sub-modules:
and the rack system control submodule is used for controlling the dynamometer control system, the emission test system and the combustion analyzer in the ECU development process. The bench system control submodule is used for controlling the dynamometer, the emission device, the combustion analyzer and other devices, the dynamometer is controlled between the bench system control submodule and the dynamometer control system through a TCP/IP protocol and a memory impression technology, the AK protocol is used between the bench system control submodule and the emission test system for controlling the emission device and transmitting data, and the bench system control submodule and the combustion analyzer are connected through a Distributed Component Object Model (DCOM) technology. The control submodule of the rack system mainly aims to record data of different devices synchronously at a time point and realize automatic control of each system on one device; compared with the existing product which can realize the connection with the same function, the cost is high.
And the calibration submodule is used for calibrating the control strategy parameters, calibrating the reading and writing of a database file and monitoring the control strategy measuring points.
And the experiment recording submodule is used for recording corresponding measured values according to the user requirements, wherein the measured values comprise steady-state recorded measured values, and data and a measuring channel sent by the transient recording communication and storage submodule.
And the automatic calibration editor submodule is used for editing an automatic experiment process, automatically calibrating the engine by controlling other submodules and recording an experiment.
The further technical scheme is that the bench system control submodule is connected with the dynamometer control system, the emission test system and the combustion analyzer through a router. The communication speed is improved by an Ethernet communication mode, and the highest communication speed can reach 1G/s.
The technical scheme is that the calibration sub-module indexes according to the calibration parameter path when calibrating the control strategy parameters, and a communication protocol is not needed.
The control strategy accessed in the central processing module is compiled into an NI VeriStandModel Framework model, the interface of the central processing module is open source, and the user-defined control strategy can be accessed
The principle of the invention is explained as follows: the driving circuit module of the engine control system provided by the invention conditions the original signal collected by the sensor module and then transmits the conditioned original signal to the programmable bottom layer driving module for data collection, and the programmable bottom layer driving module collects and calculates the sensor as a voltage value; and simultaneously, synchronous phase tracking is carried out on the crankshaft camshaft signal, and the rotating speed and the crankshaft rotation angle of the engine are calculated.
The communication interface transmits the engine speed and the crankshaft rotation angle calculated by the programmable bottom layer driving module to the central processing module for calculation, and the central processing module outputs control signals for controlling oil injection, rail pressure, air injection, EGR electromagnetic valves and the like to the programmable bottom layer driving module through the communication interface after calculation;
the programmable bottom layer driving module generates control output waveform signals of a crank angle of the engine and various actuators for oil injection and air injection according to the control signals of the central processing module, sends the waveform signals to the driving circuit module, and the driving circuit module converts and amplifies the waveform signals into analog current waveforms to control the actuators of the engine to work.
The bench system control submodule is used for realizing data communication and control of a dynamometer, a combustion analyzer and emission test system test equipment to carry out engine bench tests, the test recording submodule stores and records measured data according to needs, and the calibration submodule reads and writes parameters in a control strategy to complete manual calibration tests. The automatic calibration editor submodule is a tool for realizing automatic experiments and automatic calibration, realizes the control of the working condition of the engine through a flow chart, sets calibrated variables and numerical values, can gradually execute the control of test equipment for realizing the control of the engine, a dynamometer, emission and the like according to the flow chart, modifies calibrated parameters, automatically records experimental data, and finishes the automatic calibration without manual watching.
In the early stage of ECU development, the designed control strategy can be directly used for controlling the operation of a real engine in the rapid control prototype stage by directly using the programmable function of the programmable bottom layer driving module, so that the conflict and the problem of design, development, test and verification links are solved in the early stage of ECU development, and the ECU development period is shortened.
The technical scheme of the invention has the following beneficial technical effects: the programmable bottom layer driving module can easily realize flexible control on the fuel injection time, pulse width and fuel injection pressure of the dual-fuel engine through the high-performance controller of the FPGA, and realizes the synchronous data recording of the transient working condition of crankshaft camshaft-engine phase position-top dead center-fuel injection; the programmable function of the system can find and solve problems in the early stage of engineering development, reduce design cost and reduce research and development time. The engine control system can realize the test and verification of a user-defined control strategy model, breaks through the limitation of an embedded control strategy, expands the control strategy realization method, completes the data communication and control of the engine bench measuring equipment by one set of control system, improves the communication rate by an Ethernet communication mode, and has the highest communication rate reaching 1G/s. Compared with the traditional engine ECU calibration mode, the method can realize the calibration of the control strategy parameters and the automatic experimental record without a communication protocol, so that the development and calibration of the ECU are carried out in parallel, the development period is shortened, and the calibration workload is reduced.
Drawings
FIG. 1 is a schematic block diagram of an engine control system and engine according to one embodiment of the present disclosure;
FIG. 2 is a schematic block diagram of an engine control system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 1, the engine control system of the present invention includes a central processing module, a programmable bottom layer driving module, a driving circuit module, a sensor module, and an actuator module. A driving circuit module of the engine control system is connected with a sensor module and an actuator module through a wire harness, and the sensor module and the actuator module comprise a sensor and an actuator which are installed on an engine. The central processing module is connected with external equipment through an Ethernet communication router, wherein the external equipment comprises a dynamometer control system, a combustion analyzer and an emission testing system, and the dynamometer control system is connected with the engine through a dynamometer.
The engine control system provided by the embodiment is used for controlling an engine, a frame of the engine control system is shown in fig. 2, a signal acquisition submodule of a driving circuit module is connected with a sensor module, acquires an engine signal of the sensor module, processes the signal by a signal modulation and demodulation submodule, and transmits the signal to a programmable bottom layer driving module through a signal transmission submodule. The signal transmission submodule also receives a control signal of the programmable bottom layer driving module, and the control signal is processed by the signal modulation and demodulation submodule and then is transmitted to the actuator module to complete the control of the engine. The driving circuit module realizes signal processing of the sensor and driving control of the actuator, the sensor specifically comprises a crankshaft position sensor, a camshaft position sensor, a rail pressure sensor, a water temperature sensor, an accelerator pedal sensor and the like, and the actuator comprises an oil sprayer, a fuel metering unit, a VNT, an EGR and the like. The signal modulation and demodulation submodule of the programmable bottom layer driving module is used for controlling the generation of waveforms; the crankshaft camshaft signal tracking submodule is used for calculating the position of the engine to realize phase tracking and calculating the average rotating speed and the instantaneous rotating speed of the engine; the communication and storage submodule is used for transmitting various signals of synchronous phases; the control strategy submodule of the central processing module is used for operating a control strategy and is connected with the programmable bottom layer driving module through the communication interface, the communication and storage submodule of the programmable bottom layer driving module transmits the acquired sensor signal into the control strategy submodule through the communication interface, the control strategy submodule calculates the sensor signal to obtain a real-time control signal of the engine, and the communication interface transmits the control signal to the programmable bottom layer driving module.
The bench system control sub-module, the calibration sub-module, the experiment record sub-module and the automatic calibration editor sub-module of the central processing module are used for optimizing the invention.
The invention can be used for the performance test of the engine and the parameter calibration of the engine in a better real-time mode, as shown in figure 1, a rack system control submodule of a central processing module is connected to a dynamometer control system, a combustion analyzer and an emission test system through a router and controls the engine rack test equipment, wherein the rack system control submodule can be in data communication with the dynamometer control system, the combustion analyzer and the emission test system and transmits control commands and data; the experiment recording submodule is used for recording experiment data and values of measuring points in the control strategy, and the calibration submodule is used for calibrating parameters of the control strategy. The automatic calibration editor sub-module can control each sub-module of the central processing module according to the set steps of the flow chart, and control the engine and the bench equipment according to the preset steps, so that the automatic experiment and calibration work are realized.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (9)
1. An engine control system capable of expediting ECU development, comprising:
the sensor module is used for acquiring information of the engine and generating a sensor signal;
the driving circuit module is used for connecting the sensor module and the actuator module and conditioning signals;
the programmable bottom layer driving module is used for connecting the driving circuit module and the central processing module and converting and calculating signals;
the central processing module is used for calculating a control signal for controlling the actuator according to the sensor signal and then transmitting the control signal for controlling the actuator to the programmable bottom layer driving module;
and the actuator module is used for receiving the signal conditioned by the driving circuit module and controlling the engine.
2. The engine control system capable of expediting ECU development according to claim 1, wherein the central processing module comprises the following sub-modules:
the communication interface is used for connecting the programmable bottom layer driving module and the central processing module;
and the control strategy submodule is used for calculating the value of the control actuator according to the value acquired by the engine sensor and the required working condition of the engine, and then transmitting the value to the programmable bottom layer driving module to realize level output.
3. The engine control system capable of accelerating ECU development according to claim 2, wherein the programmable bottom drive module is based on an FPGA chip and comprises the following sub-modules:
the signal modulation and demodulation submodule is used for modulating the sensor signal of the driving circuit module and then transmitting the modulated sensor signal to the central processing module; demodulating the received control signal of the central processing module and then sending the demodulated control signal to the driving circuit module;
and the communication and storage submodule is used for carrying out signal transmission with the communication interface and the driving circuit module and also used for sending transient data to the central processing module for storage.
And the crankshaft camshaft signal tracking submodule is used for synchronously tracking the phase of the crankshaft camshaft signal acquired by the sensor module, calculating the rotating speed and the crankshaft angle of the engine and transmitting the signals to the central processing module.
4. The engine control system capable of accelerating ECU development according to claim 1, characterized in that the drive circuit module includes the following sub-modules:
the signal acquisition submodule is used for receiving the original sensor signal acquired by the sensor module;
the signal modulation and demodulation submodule is used for conditioning the original signal of the sensor and converting and amplifying the received control signal of the programmable bottom layer driving module into an analog current waveform;
and the signal transmission submodule is used for respectively carrying out signal transmission with the programmable bottom layer driving module, the sensor module and the controller module.
5. The engine control system capable of expediting ECU development according to claim 4, wherein the signal modem submodule comprises;
the diesel injection modulation strategy is used for converting and amplifying the received control signal of the programmable bottom layer driving module into an analog current waveform used for diesel injection;
a second fuel injection modulation strategy for converting and amplifying the received programmable bottom drive module control signal into an analog current waveform for a second fuel injection; the second fuel may be one of natural gas, gasoline, methanol.
6. The engine control system capable of expediting ECU development according to claim 1, wherein the central processing module further comprises the following sub-modules:
the stand system control submodule is used for controlling the dynamometer control system, the emission test system and the combustion analyzer in the ECU development process;
the calibration submodule is used for calibrating the control strategy parameters, calibrating the reading and writing of a database file and monitoring the control strategy measuring points;
the experiment recording submodule is used for recording corresponding measured values according to the needs of a user, and comprises a steady-state recording measured value and a transient recording communication and storage submodule for sending data;
and the automatic calibration editor submodule is used for editing an automatic experiment process, automatically calibrating engine control parameters by controlling other submodules, and recording an experiment.
7. The engine control system capable of accelerating ECU development of claim 6, wherein the bench system control submodule is connected with the dynamometer control system, the emission test system, the combustion analyzer through a router.
8. The engine control system that enables expedited ECU development according to claim 6, wherein the calibration sub-module indexes according to a calibration parameter path when calibrating control strategy parameters without requiring a communication protocol.
9. The engine control system capable of accelerating development of the ECU as claimed in claim 2, wherein the control strategy accessed in the central processing module is compiled into an NI VeriStand Model Framework Model, and the interface of the central processing module is open source and can be accessed to a customized control strategy.
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| CN114594719A (en) * | 2020-12-07 | 2022-06-07 | 山东新松工业软件研究院股份有限公司 | Programmable control system and method based on i.MX6ULL |
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