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More electric aircraft electro-mechanical actuator modeling method based on energy features and model thereof

A technology of electromechanical actuators and energy characteristics, applied in the direction of instruments, adaptive control, control/regulation systems, etc., can solve the problems of power flow that cannot reflect electric energy, fast modeling speed, heavy workload, etc., and achieve model structure Simple and versatile, fast modeling and fast running effects

Active Publication Date: 2015-07-29
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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Problems solved by technology

[0006] In order to overcome the shortcomings of the above-mentioned existing modeling methods, the present invention proposes a modeling method for electromechanical actuators based on energy characteristics, which solves the workload of traditional modeling methods based on transfer functions for multi-electric aircraft electromechanical actuators. The large sum can

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  • More electric aircraft electro-mechanical actuator modeling method based on energy features and model thereof
  • More electric aircraft electro-mechanical actuator modeling method based on energy features and model thereof
  • More electric aircraft electro-mechanical actuator modeling method based on energy features and model thereof

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[0022] The technical solution of the present invention will be described in detail below in conjunction with the drawings:

[0023] Such as figure 1 In the method of the present invention, the electromechanical actuator is divided into three power modules of electric energy converter, motor and rotary-linear converter and a closed-loop feedback module. The input of the electromechanical actuator is DC voltage and DC current; the output is linear speed and Linear force.

[0024] Such as figure 2 , The input of the power converter is DC voltage U in And DC current I in , The output is three-phase AC voltage u 1 And current i 1 , The power absorbed by the energy storage element in the electric energy converter is P 1C , You can use resistor R 1 And capacitance C 1 The circuit formed in series simulates the energy storage element, which stores energy during the voltage rise and releases energy during the voltage drop; the input power of the electrical energy converter is P 1 , The ou...

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Abstract

The invention discloses an aircraft electro-mechanical actuator modeling method, mainly solves problems that a conventional modeling mode of a more electric aircraft electro-mechanical actuator based on a transfer function is high in workload and cannot reflect power flow of electric energy, and belongs to the field of more electric aircraft electrical system modeling and simulation. Modeling is performed on the basis of the energy features reflected by concrete functions which can be realized by components at the input and output ends without analyzing the concrete structure of the electro-mechanical actuator so that workload is low, modeling speed is high, the model structure is simple and general and operation speed is high. The input and output relation of power can be reflected by the model established by utilizing the method, and the model has normalized power interfaces with a power grid so as to be suitable for simulation of more electric aircraft electrical loads, and influence of the electro-mechanical actuator on power grid power can be truly reflected.

Description

technical field [0001] The invention discloses an electromechanical actuator modeling method based on energy characteristics, and belongs to the technical field of electric load simulation modeling of multi-electric aircraft. Background technique [0002] One of the characteristics of more electric aircraft is to change the hydraulic actuators driven by hydraulic energy into electromechanical actuators driven by electric energy. The electromechanical actuator controls the rotary motion of the motor through a power electronic converter, and then the mechanical device converts the rotary motion into a linear motion to drive the aircraft control surface. Since hydraulic energy is replaced by electric energy, multi-electric aircraft will be more efficient and more reliable, so it has become the development direction of aircraft. [0003] Since there are more and more electromechanical actuators in the aircraft power grid, their power, especially the impact power at startup, is ...

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Application Information

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IPC IPC(8): G05B13/04
Inventor 王丹阳徐红专张惠娟杨善水王莉
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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