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Full-Text Articles in Engineering

Research On Control Technology Of Aeroengine Heat Exchanger, Qingyang Jiang, Song Hua Dec 2019

Research On Control Technology Of Aeroengine Heat Exchanger, Qingyang Jiang, Song Hua

Journal of System Simulation

Abstract: In order to solve the high temperature problem caused by the high speed of the synergistic aspirating engine, this paper designs a control algorithm for the heat exchanger. In the process of designing the control algorithm, considering the strong nonlinearity, uncertainty and strong coupling of the engine, The decoupling study of the multi-input and multi-output linear model of the heat exchanger is carried out. The decoupling effect of two different decoupling methods on the strongly coupled heat exchanger is obtained. The fuzzy decoupling PID controller has short adjustment time and overshoot. Small, conclusions with better decoupling effects.


The Causal Relationships In The Management Process Of Cement Production, Alishev Sh., Ortikov Z. Oct 2019

The Causal Relationships In The Management Process Of Cement Production, Alishev Sh., Ortikov Z.

Problems of Architecture and Construction

In the article on the basis of cause-effect relationships in cement, which are both direct and reverse in nature, it is revealed that the compressive strength of concrete largely depends on the reactivity of the anhydrous compounds obtained during firing, the fineness of grinding, the amount of free lime and other oxides, as well as a great influence on the quality of cement has a fine grinding of raw materials. Results of calculation of standard deviations. The models are obtained on the basis of the results of chemical analysis and individual expressive data of physical and mechanical character, on the …


Developing An Automatic Control System For Track Relays In The Relay Room Of The Railway Stations Of The Joint Stock Company “Uzbekistan Temir Yo’Llari”, Q.K. Nuriddinov Aug 2019

Developing An Automatic Control System For Track Relays In The Relay Room Of The Railway Stations Of The Joint Stock Company “Uzbekistan Temir Yo’Llari”, Q.K. Nuriddinov

Journal of Tashkent Institute of Railway Engineers

This article deals with the problems of developing an automatic control system for track relays in the relay room of the railway stations of the Joint Stock Company “Uzbekistan Temir Yo’llari”. The statistical data of failures that occurred at the railway stations of the Joint Stock Company “Uzbekistan Temir Yo’llari” are given. A functional diagram of a local module for inputting analog signals from Signaling, Centralization, Interlocking and data transmission systems on a personal computer using a microcontroller via an Ethernet channel has been developed.


Achievements And Developments Of Hysteresis And Creep Of Pneumatic Artificial Muscles, Shenglong Xie, Haitao Liu, Jiangping Mei Jan 2019

Achievements And Developments Of Hysteresis And Creep Of Pneumatic Artificial Muscles, Shenglong Xie, Haitao Liu, Jiangping Mei

Journal of System Simulation

Abstract: Regarding to the problems of hysteresis and creep, the developments and achievements of the research on pneumatic artificial muscles at home and abroad are systemically reviewed. The state of the art is summarized in terms of characteristics, reasons causing, modeling and control strategies based on the hysteresis and creep modeling. The problems in recent research are analyzed and the direction for further research is put forward. The theoretical study on hysteresis and creep of pneumatic artificial muscle is limited. The hysteresis modeling needs to consider the time-varied parameters caused by creep. Neural network modeling needs to solve …