CN106249149B - A kind of simulation of engine load device control system - Google Patents
A kind of simulation of engine load device control system Download PDFInfo
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- CN106249149B CN106249149B CN201610833284.1A CN201610833284A CN106249149B CN 106249149 B CN106249149 B CN 106249149B CN 201610833284 A CN201610833284 A CN 201610833284A CN 106249149 B CN106249149 B CN 106249149B
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- 238000006243 chemical reaction Methods 0.000 claims description 5
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- 238000011056 performance test Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
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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
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Abstract
The invention discloses a kind of simulation of engine load device control systems.The simulation of engine load device control system includes: host computer (1)；PLC controller (2), the PLC controller (2) connect with the host computer (1)；Control module is executed, the execution control module is connect with the main circuit (3) of the PLC controller (2) and simulation of engine load device respectively；Two close cycles adjust unit (4), and the two close cycles adjust unit (4) and connect respectively with the main circuit (3) of the PLC controller (2) and the simulation of engine load device.Use the application simulation of engine load device control system can with the entire starting process of simulated engine, and can be according to different model engine start when curve requirement, simulate various types of engine startups.And unit is adjusted using the two close cycles of the application and not only ensure that the real-time of system, but also has taken into account the stability and control precision of system.
Description
Technical Field
The invention relates to the technical field of engine load simulation tests, in particular to a control system of an engine load simulation device.
Background
The airplane direct current starting generator is power supply equipment of an onboard direct current power supply, and the engine drives the generator to work during normal flight, so that mechanical energy is converted into electric energy to supply power to electric equipment of the airplane and a storage battery is charged at the same time. When the airplane is started, the ground direct-current power supply or the storage battery supplies power to be used as a motor to drag the airplane engine to accelerate. When the engine speed reaches a certain speed, the engine is ignited to work and enters a normal working state, so that the engine is regarded as a starter. The starting process is carried out in stages and is automatically completed by a control circuit. The time required from the power-on of the motor to the ignition of the engine for normal operation is about several tens of seconds. In order to examine the transient power supply characteristic of the starting state of the engine and examine the capability of the onboard storage battery for starting the engine, a transient performance test simulating the state of the engine is required.
In the prior art, an engine load simulator is used for performing a transient performance test for simulating an engine state.
The existing engine load simulation device can only simulate a steady-state starting process and cannot simulate a transient starting process, so that the performance of an engine cannot be comprehensively examined, curves of various models cannot be simulated according to actual requirements, and the cost of input equipment is higher.
Accordingly, a technical solution is desired to overcome or at least alleviate at least one of the above-mentioned drawbacks of the prior art.
Disclosure of Invention
It is an object of the present invention to provide an engine analogue load device control system which overcomes or at least alleviates at least one of the above-mentioned disadvantages of the prior art.
In order to achieve the above object, the present invention provides an engine pseudo load device control system for controlling an engine pseudo load device for simulating an engine starting process, the engine pseudo load device control system comprising: an upper computer; the PLC controller is connected with the upper computer; the execution control module is respectively connected with the PLC and a main circuit of the engine simulation load device; the double closed-loop adjusting unit is respectively connected with the PLC and a main circuit of the engine simulated load device; the upper computer is used for transmitting parameter signals to the PLC; the PLC controller controls the execution control module to work, and the execution control module controls a main circuit of the engine simulation load device to work; the double closed-loop adjusting unit is used for receiving a negative feedback signal of a main circuit of the engine analog load device and a control signal transmitted by the PLC, providing an adjusting control signal for the main circuit of the engine analog load device according to the control signal and the negative feedback signal, and enabling the main circuit to work according to the adjusting control signal.
Preferably, the control system for the engine simulated load device further comprises a signal acquisition module, and the signal acquisition module is respectively connected with the PLC controller and a main circuit of the engine simulated load device; the signal acquisition module is used for acquiring information of a main circuit of the engine load simulator and transmitting the acquired information to the PLC, and the PLC transmits received data to the upper computer.
Preferably, the double closed-loop adjusting unit includes: the input end of the algorithm module is respectively connected with the PLC and a main circuit of the engine analog load device to form a PID regulator, the input end of the PID regulator is connected with the output end of the algorithm module, and the output end of the PID regulator is connected with the main circuit of the engine analog load device; the input end of the current feedback module is connected between the output end of the PID regulator and the main circuit of the engine analog load device, and the output end of the current feedback module is connected with the input end of the algorithm module; the algorithm module is used for receiving a control signal transmitted by the PLC, a negative feedback signal transmitted by a main circuit of the engine simulated load device and a current negative feedback signal transmitted by the current feedback module, calculating the control signal, the negative feedback signal and the current negative feedback signal into a PID control signal, and transmitting the PID control signal to the PID regulator; the PID regulator processes the PID control signal to form a main circuit control signal and transmits the main circuit control signal to a main circuit of the engine analog load device; and the main circuit of the engine load simulator works according to the main circuit control signal.
Preferably, a D/A given module is arranged between the algorithm module and the PLC; an A/D conversion module is arranged between a main circuit of the engine load simulator and the PLC.
Preferably, the execution control module includes: the actuating mechanism is connected with a main circuit of the engine analog load device; the input end of the switching value input module is connected with the execution mechanism, and the output end of the switching value input module is connected with the PLC; and the input end of the switching value output module is connected with the PLC, and the output end of the switching value output module is connected with the actuating mechanism.
Preferably, the signal acquisition module includes: a sensor connected to a main circuit of the engine dummy load device; the analog quantity acquisition module is respectively connected with the sensor and the PLC; the sensor is used for acquiring information of a main circuit of the engine load simulator and transmitting the information to the analog quantity acquisition module; the analog quantity acquisition module is used for converting the information transmitted by the sensor into information which can be received by the PLC controller and then transmitting the information to the PLC controller.
The engine load simulation device control system can simulate the whole starting process of an engine, and can simulate the starting processes of engines of various models according to the requirements of curves when the engines of different models are started. And the double closed-loop adjusting unit not only ensures the real-time performance of the system, but also considers the stability and the control precision of the system.
Drawings
Fig. 1 is a system diagram of an engine simulated load device control system according to a first embodiment of the invention.
Fig. 2 is a system diagram of a double closed-loop adjustment unit in an engine simulated load device control system according to a first embodiment of the invention.
Reference numerals:
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
Fig. 1 is a system diagram of an engine simulated load device control system according to a first embodiment of the invention. Fig. 2 is a system diagram of a double closed-loop adjustment unit in an engine simulated load device control system according to a first embodiment of the invention.
The engine pseudo-load device control system shown in fig. 1 is used for controlling the engine pseudo-load device, and the engine pseudo-load device is used for simulating an engine starting process.
The engine simulation load device control system comprises an upper computer 1, a PLC (programmable logic controller) 2, an execution control module and a double closed-loop adjusting unit 4, wherein the PLC 2 is connected with the upper computer 1; the execution control module is respectively connected with the PLC 2 and a main circuit 3 of the engine simulation load device; the double closed-loop adjusting unit 4 is respectively connected with the PLC controller 2 and a main circuit 3 of the engine analog load device; the upper computer is used for transmitting parameter signals to the PLC; the PLC controller controls the execution control module to work, and the execution control module controls a main circuit of the engine analog load device to work; the double closed-loop adjusting unit is used for receiving a negative feedback signal of a main circuit of the engine analog load device and a control signal transmitted by the PLC, and providing an adjusting control signal for the main circuit of the engine analog load device according to the control signal and the negative feedback signal, and the main circuit works according to the adjusting control signal.
The engine load simulation device control system can simulate the whole starting process of an engine, and can simulate the starting processes of engines of various models according to the requirements of curves when the engines of different models are started. And the double closed-loop adjusting unit not only ensures the real-time performance of the system, but also considers the stability and the control precision of the system.
Referring to fig. 1, in this embodiment, the engine artificial load device control system further includes a signal acquisition module, and the signal acquisition module is respectively connected to the PLC controller and the main circuit of the engine artificial load device; the signal acquisition module is used for acquiring information of a main circuit 3 of the engine simulation load device and transmitting the acquired information to the PLC controller 2, and the PLC controller 2 transmits the received data to the upper computer 1. The signal acquisition module is arranged, and the real-time condition of the main circuit 3 of the engine simulation load device can be displayed on the upper computer in real time.
Referring to fig. 2, in the present embodiment, the double closed-loop adjusting unit 4 includes an algorithm module 41, a PID regulator 42, and a current feedback module 43, wherein an input end of the algorithm module 41 is connected to the PLC controller 2 and the main circuit 3 of the engine simulated load device, respectively; the input end of the PID regulator 42 is connected with the output end of the algorithm module 41, and the output end of the PID regulator 42 is connected with the main circuit 3 of the engine analog load device; the input end of the current feedback module 43 is connected between the output end of the PID regulator 42 and the main circuit 3 of the engine analog load device, and the output end of the current feedback module 43 is connected with the input end of the algorithm module 41; the PLC is used for collecting negative feedback signals transmitted by a main circuit of the engine analog load device, the algorithm module is used for receiving control signals transmitted by the PLC, negative feedback signals transmitted by the main circuit of the engine analog load device and current negative feedback signals transmitted by the current feedback module, calculating the control signals, the negative feedback signals and the current negative feedback signals into PID control signals, and transmitting the PID control signals to the PID regulator; the PID regulator processes the PID control signal to form a main circuit control signal, and transmits the main circuit control signal to a main circuit of the engine analog load device; the main circuit of the engine simulation load device works according to the main circuit control signal.
The double-closed-loop regulation is composed of outer loop closed-loop regulation consisting of a PLC (programmable logic controller), a main circuit and an algorithm module and inner loop closed-loop regulation consisting of a current feedback module, the algorithm module and a PID (proportion integration differentiation) regulator, and by adopting the double-loop regulation mode, the real-time performance of the system is ensured, and the stability and the control precision of the system are also considered.
Referring to fig. 1, in the present embodiment, a D/a setting module 44 is disposed between the algorithm module and the PLC controller; an A/D conversion module is arranged between a main circuit of the engine load simulator and the PLC. The A/D conversion module is used for converting analog/digital signals. A negative feedback signal transmitted by a main circuit of the engine load simulator is transmitted to a transmission line of the PLC controller, and an A/D conversion module is arranged on the transmission line.
Referring to fig. 1, in the present embodiment, the execution control module includes an execution mechanism 5, a switching value input module 6, and a switching value output module 7, where the execution mechanism 5 is connected to a main circuit 3 of the engine simulation load device; the input end of the switching value input module is connected with the actuating mechanism, and the output end of the switching value input module is connected with the PLC; the input end of the switching value output module is connected with the PLC, and the output end of the switching value output module is connected with the actuating mechanism.
In this embodiment, the actuator includes a relay and a contactor, and the PLC controller operates the actuator such as the relay and the contactor through the switching value input module and the switching value output module to start the main circuit.
Referring to fig. 1, in the present embodiment, the signal acquisition module includes a sensor 8 and an analog acquisition module 9, the sensor is connected to a main circuit of the engine analog load device; the analog quantity acquisition module is respectively connected with the sensor and the PLC; the sensor is used for acquiring information of a main circuit of the engine analog load device and transmitting the information to the analog quantity acquisition module; the analog quantity acquisition module is used for converting the information transmitted by the sensor into information which can be received by the PLC controller and then transmitting the information to the PLC controller. The PLC controller transmits the information to the upper computer after receiving the information, and the upper computer displays the information through the displayer.
Finally, it should be pointed out that: the above examples are only for illustrating the technical solutions of the present invention, and are not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. An engine mock load device control system for controlling said engine mock load device, said engine mock load device being for simulating an engine starting process, said engine mock load device control system comprising:
an upper computer (1);
the PLC controller (2), the PLC controller (2) is connected with the upper computer (1);
the execution control module is respectively connected with the PLC (2) and a main circuit (3) of the engine simulation load device;
the double-closed-loop adjusting unit (4), the double-closed-loop adjusting unit (4) is respectively connected with the PLC (2) and a main circuit (3) of the engine simulated load device; wherein,
the upper computer is used for transmitting parameter signals to the PLC; the PLC controller controls the execution control module to work, and the execution control module controls a main circuit of the engine simulation load device to work; the double closed-loop adjusting unit is used for receiving a negative feedback signal of a main circuit of the engine analog load device and a control signal transmitted by the PLC controller, and providing an adjusting control signal for the main circuit of the engine analog load device according to the control signal and the negative feedback signal, and the main circuit works according to the adjusting control signal;
the double closed-loop regulation unit (4) comprises:
the input end of the algorithm module (41) is respectively connected with the PLC (2) and a main circuit (3) of the engine simulated load device;
the input end of the PID regulator (42) is connected with the output end of the algorithm module (41), and the output end of the PID regulator (42) is connected with the main circuit (3) of the engine analogue load device;
a current feedback module (43), wherein the input end of the current feedback module (43) is connected between the output end of the PID regulator (42) and the main circuit (3) of the engine analog load device, and the output end of the current feedback module (43) is connected with the input end of the algorithm module (41); wherein,
the algorithm module is used for receiving a control signal transmitted by the PLC, a negative feedback signal transmitted by a main circuit of the engine simulated load device and a current negative feedback signal transmitted by the current feedback module, calculating the control signal, the negative feedback signal and the current negative feedback signal into a PID control signal, and transmitting the PID control signal to the PID regulator;
the PID regulator processes the PID control signal to form a main circuit control signal and transmits the main circuit control signal to a main circuit of the engine analog load device;
and the main circuit of the engine load simulator works according to the main circuit control signal.
2. The engine dummy load device control system according to claim 1, wherein the engine dummy load device control system comprises a signal acquisition module connected to the PLC controller and the main circuit of the engine dummy load device, respectively;
the signal acquisition module is used for acquiring information of a main circuit (3) of the engine load simulator and transmitting the acquired information to the PLC (2), and the PLC (2) transmits the received data to the upper computer (1).
3. The engine dummy load device control system according to claim 2, wherein a D/a given module (44) is provided between the algorithm module and the PLC controller;
an A/D conversion module is arranged between a main circuit of the engine load simulator and the PLC.
4. The engine dummy load device control system of claim 3, wherein the execution control module includes:
an actuator (5), wherein the actuator (5) is connected with a main circuit (3) of the engine simulation load device;
the input end of the switching value input module is connected with the actuating mechanism, and the output end of the switching value input module is connected with the PLC;
and the input end of the switching value output module is connected with the PLC, and the output end of the switching value output module is connected with the executing mechanism.
5. The engine dummy load device control system of claim 4, wherein the signal acquisition module comprises:
a sensor (8) connected to a main circuit of the engine dummy load device;
the analog quantity acquisition module (9) is respectively connected with the sensor and the PLC; wherein,
the sensor is used for acquiring information of a main circuit of the engine load simulator and transmitting the information to the analog quantity acquisition module; the analog quantity acquisition module is used for converting the information transmitted by the sensor into information which can be received by the PLC controller and then transmitting the information to the PLC controller.
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| CN108427048B (en) * | 2018-03-07 | 2020-08-28 | 中国商用飞机有限责任公司北京民用飞机技术研究中心 | Load simulation device |
| CN113985167A (en) * | 2021-10-20 | 2022-01-28 | 天水电气传动研究所集团有限公司 | Feedback type power aging test experimental system for high-power direct-current conversion device |
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