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environmental control 1

fuzzy control 1

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Estimation of fatigue damage of airplane landing gear

LIU Ke-ge, YAN Chu-liang, ZHANG Shu-ming

Frontiers of Mechanical Engineering 2006, Volume 1, Issue 4, Pages 424-428 doi: 10.1007/s11465-006-0051-x

Abstract: Taking the main landing gears of fighter and transport airplanes as examples, the fatigue life was estimated by means of the Miner s rule and from the spectrum of the real measurements. The computed results show that the landing damage to the fighter and transport airplanes is 75% and 60% of the total damage, and the damage caused by the landing stroke is 40% of the landing-gear damage. The fatigue damage properties can provide important information for reliable designing and the structural optimization.

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Analysis of Control Performance of ECS in Fighter Plane

Yao Hongwei,Wang Jun

Strategic Study of CAE 2006, Volume 8, Issue 6, Pages 44-47

Abstract:

Based on the characteristics of the ECS, pulse width-fuzzy control concept was put forward. Four models, pulse width regulating, PID control, fuzzy control and combined control, were established with Fuzzy and Simulink tool boxes in MATLAB. The difference between the temperatures of mixed flow and the objective and its change rate were the input in the fuzzy system, and the output, the control signal, was obtained by fuzzy reasoning. Rank skipping response characteristics of the four control methods were computed and analyzed with temperature rank skipping signal. A group of dynamic parameters were selected as the input data, by which dynamic response of the combined control model was simulated. The result showed that combined control system could solve the problem of temperature fluctuation in existing pulse width regulating system efficiently.

Keywords： airplane environmental control fuzzy control simulation

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Tire Dynamics Collaborative Development Strategy

Guo Konghui,Lu Dang and Wu Haidong

Strategic Study of CAE 2018, Volume 20, Issue 1, Pages 91-96 doi: 10.15302/J-SSCAE-2018.01.013

Abstract:

Tire dynamics is an important bottleneck in the autonomous development of automobiles and aircraft. This study compares the development of tire dynamics both nationally and in other nations, and indicates a significant challenge in the development of tire dynamics in China in the face of an increasingly fierce international competition. The strategies and suggestions for the collaborative development of tire dynamics in China are proposed after analyzing the characteristics of the tire dynamics test, simulation, and application technology.

Keywords： tire dynamics automobile airplane collaborative development strategy