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Servo power computing method based on Monte Carlo target practice

A power calculation and power technology, applied in calculation, design optimization/simulation, special data processing applications, etc., can solve problems such as power consumption requirements of difficult servo systems, large load fluctuations, and difficult dynamic mathematical models of servo systems

Active Publication Date: 2017-03-08
CHINA ACAD OF LAUNCH VEHICLE TECH
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AI Technical Summary

Problems solved by technology

[0002] The servo system is one of the most important control actuators for various aircraft in the aerospace field. As a high-order multivariable strongly coupled system, there are a large number of nonlinear factors, uncertain factors, and unmodeled dynamic characteristics during operation. , which makes it very difficult to establish an accurate dynamic mathematical model of the servo system, and therefore it is difficult to accurately calculate the power consumption demand of the servo system. power system design
[0003] In the traditional model design, the calculation of the power consumption demand of the servo system usually adopts the method of engineering experience estimation, that is, the working efficiency of the servo system is estimated based on engineering experience, and combined with the peak power consumption of the steering gear obtained in the nominal design flight trajectory simulation Calculate the peak power consumption demand for the power system. The calculated power consumption cannot accurately reflect the actual working conditions of the servo system, which may easily lead to over-design of the power system without accurate design input, and affect the overall weight and volume of the aircraft. The closed loop adversely affects

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  • Servo power computing method based on Monte Carlo target practice
  • Servo power computing method based on Monte Carlo target practice
  • Servo power computing method based on Monte Carlo target practice

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Embodiment Construction

[0068] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0069] Build an aircraft six-degree-of-freedom simulation platform in MATLAB software, input the overall original data and the aerodynamic characteristic data of the entire aircraft, set the initial conditions for the simulation, and consider various deviation interference factors to carry out multiple Monte Carlo shooting simulations to obtain the flight trajectories of the aircraft According to the relevant data, the power curve of the steering gear of the aircraft is calculated with time.

[0070] The formula for calculating the power Q of the aircraft steering gear is as follows:

[0071]

[0072] Among them: Q is the steering gear power, M Z is the hinge moment of the steering gear (including the transmission mechanism), M I is the moment of inertia of the steering gear (including the transmission mechanism), M f is the friction torqu...

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Abstract

The invention relates to a servo power computing method based on Monte Carlo target practice. According to the method, for single or more target practice simulation tracks of an aircraft, a power change curve along with time of an aircraft servo is obtained; aircraft servo peak power, aircraft servo maximum peak power duration, aircraft servo peak power minimum interval time before landing, the aircraft servo peak power interval number, aircraft servo constant power and aircraft servo average power are obtained according to the change curve. According to the method, the accurate power consumption demand condition of the servo in a whole task cycle is obtained by obtaining the aircraft servo power related indexes, and reliable design input for design of a power system is provided.

Description

technical field [0001] The invention relates to a steering gear power calculation method based on Monte Carlo shooting, and belongs to the technical field of aircraft steering gear power supply design. Background technique [0002] The servo system is one of the most important control actuators for various aircraft in the aerospace field. As a high-order multivariable strongly coupled system, there are a large number of nonlinear factors, uncertain factors, and unmodeled dynamic characteristics during operation. , which makes it very difficult to establish an accurate dynamic mathematical model of the servo system, and therefore it is difficult to accurately calculate the power consumption demand of the servo system. power system design. [0003] In the traditional model design, the calculation of the power consumption demand of the servo system usually adopts the method of engineering experience estimation, that is, the working efficiency of the servo system is estimated b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 谢泽兵石庆峰郑宏涛杨友超郎鹏飞李然张月玲袁利平刘刚康建斌张建英李洋
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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