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Air engine tail nozzle throat area control system

A technology of aero-engine and throat area, which is applied in the direction of machine/engine, jet propulsion, etc., can solve the problems of poor installation of the engine system, large volume and weight, etc., achieve good anti-load disturbance ability, and ensure the effect of reliable operation.

Active Publication Date: 2019-10-08
XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the existing high-power output tail nozzle throat area control system has a la

Method used

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  • Air engine tail nozzle throat area control system
  • Air engine tail nozzle throat area control system
  • Air engine tail nozzle throat area control system

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Embodiment Construction

[0050] The present invention is described in more detail below in conjunction with accompanying drawing and embodiment:

[0051] Such as figure 1 Shown: aero-engine exhaust nozzle throat area control system, including N low-power electric cylinders and integrated servo controllers; (N=3 in this example)

[0052] Among them, the integrated servo controller includes a control circuit, a power drive circuit and a power supply circuit;

[0053] Such as figure 2 and image 3 As shown, the control circuit is a control processor based on a dual DSP+FPGA architecture, including a control circuit including an FPGA chip, a master DSP chip, a slave DSP chip, two AD sampling expansion chips, three data decoding chips, a buffer circuit, and RS422 communication Serial port, LDO circuit, protection circuit and ROM chip;

[0054] The FPGA chip communicates with the main DSP chip, the slave DSP chip, two AD sampling expansion chips and three data decoding chips;

[0055] Both AD sampling...

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Abstract

The invention relates to an aviation engine tail nozzle throat area control system. The system solves the problems that an existing high-power output tail nozzle throat area control system is large involume weight and poor in installation of an engine system. The system comprises n small-power electric cylinders and an integrated servo controller, wherein the integrated servo controller comprisesa control circuit, a power driving circuit and a power circuit, the core of the control circuit is provided with a dual DSP chip and FPGA chip combination structure, and the power driving circuit mainly comprises n IPM modules, n magnetic isolation circuits and 2n phase current sampling chips. According to the system, the IPM modules drive the small-power electric cylinders to act, and synchronous control of n path small-power electric cylinders is realized through the dual DSP chip and the FPGA chip.

Description

technical field [0001] The invention belongs to the technical field of computer control, and in particular relates to a throat area control system of an aero-engine tail nozzle. Background technique [0002] In the engine, the tail nozzle can accelerate the expansion of the high-pressure gas discharged from the gas generator, and discharge it out of the engine at a high speed, thereby converting the available work of the gas into kinetic energy and providing reaction force to the engine to generate thrust. The throat area control system of the tail nozzle is an important part of the control system of the aero-engine. It adjusts the distribution of the expansion ratio of the airflow in the tail nozzle by changing the throat area of ​​the tail nozzle, so as to achieve the purpose of controlling the working state of the engine. [0003] With the continuous improvement of aircraft and engine performance, the requirements for the control of the engine exhaust nozzle are getting h...

Claims

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Application Information

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IPC IPC(8): F02K1/18
CPCF02K1/18
Inventor 张振华高卓李彪蔡军刘沛尧曹宽康广庆刘小玲
Owner XIAN AEROSPACE PRECISION ELECTROMECHANICAL INST
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