Research and development of civil engineering intelligent structure system

<p>With the fast-paced development of China's economy, science and technology have made rapid progress, as well as the research on civil engineering construction. In particular, civil engineering intelligent structure system has evolved into one of the world's leading disciplines and is also the future development trend, attracting extensive attention and research from professionals in this field. This paper mainly analyzes the research and current development of civil engineering intelligent structure system, and gives reasonable suggestions based on the main problems, so as to provide some references for better development and progress of this technology.</p>

Optimal Shape Control of Piezoelectric Intelligent Structure Based on Genetic Algorithm

Shape variation induced by mismachining tolerance, humidity and temperature of the working environment, material wear and aging, and unknown external load disturbances have a relatively large influence on the dynamic shape of a mechanical structure. When integrating piezoelectric elements into the main mechanical structure, active control of the structural shape is realized by utilizing the inverse piezoelectric effect. This paper presents a mathematical model regarding piezoelectric intelligent structure shape control. We also applied a genetic algorithm, and given a piezoelectric intelligent cantilever plate with both ends affected by a certain load, optimal shape control results of piezoelectric materials were analyzed from different perspectives (precision reference or cost reference). The mathematical model and results indicate that, by optimizing a certain number of piezoelectric actuators, high-precision active shape control can be realized.

Features of Speech Organization of the Corporate System

This article focuses on speech organization of a corporate system, which is understood as the whole array of texts are created in the framework of one or another body corporate in relation to the intelligent structure of subjects of speech. Haierarchical structure is dominated by corporation, all interests are subordinated to the interests of the сorporation and all language activities are consistent with the company’s leaders. In speech organization distinguish groups of texts on the basis of mandatory or voluntary disclosure by the сorporation, the recipient factor, which is incorporative and captive audience. In accordance with this, the texts have different communicative status in speech organization of the сorporation. As a practical material used the texts of the official sites of several Russian companies.

Study on Vibration Control of Gun Tube with Intelligent Structure

An active control test is done trying to control the vibration of gun tube. A four-layer piezoelectric actuator is glued on the root of an analogue tube (a steel barrel) and a voltage amplifier is used to regulate the voltage on the actuator restraining vibration of the barrel. With 130 voltages, the vibration acceleration of the simulated free end of the barrel decreases 83 percent from the original 60 m/s2 and he attenuation time is shorted greatly. It can be seen that the vibration of the barrel is decreased obviously. It is feasible and very effective to control the vibration of gun tube by using intelligent structure according to the result of the theoretical analysis and test result.