What is Qian Xuesen s Engineering Cybernetics about?

Engineering Cybernetics is a systematic, comprehensive and in-depth exposition of the basic concepts, basic principles, basic methods and basic technologies of engineering cybernetics during Qian Xuesen's teaching at the California Institute of Technology and the Massachusetts Institute of Technology in the 50s of the 20th century, on the basis of summarizing the practical experience of science and engineering technology, laying a solid foundation for the new discipline of engineering cybernetics.

The main contents of the book include:

1.The basic concept of the control system: including the composition, classification, performance index, stability and robustness of the control system.

2.Modeling of control systems: including modeling methods, model simplification, model verification, etc.

3.Analysis of control system: including transfer function, frequency characteristics, stability analysis, error analysis, etc.

4.Design of control system: including system adjustment, system optimization, system diagnosis, etc.

5.Implementation of control system: including hardware design, software implementation, controller parameter adjustment, etc.

6.Application of control system: including industrial automation, robotics, aerospace technology, etc.

Engineering Cybernetics is a very important work on engineering control theory, which has a profound impact on the development and application of engineering control.

In 1954, Qian Xuesen published the English version of Engineering Cybernetics in the United States, systematically summarizing the new development of automatic control theory and creating a new technical science. As soon as "Engineering Cybernetics" came out, it quickly attracted wide attention among people of insight in the American scientific community. They believe that this book is a foundational work in this field, and it is another brilliant achievement after the American scientist Wiener.

Therefore. The book has earned a high international reputation. Two years later, the book was published in Russian, German and Chinese.

Cybernetics is the theory of automatic control and self-regulation of various systems in the field of engineering and technology. After Dr. Wiener proposed the basic idea of cybernetics in the 40s, many engineers and doctors of mathematics tried to find a way to this pinnacle of theory, but they all failed halfway. Engineers focus on practice and solve specific problems, and are not good at rising to the level of theory, while mathematicians are good at theoretical analysis, but are not good at solving practical problems from the general to the individual.

Qian Xuesen concentrated two advantages in one, masterfully loaded two wheels onto a chariot, and crushed a new way of engineering cybernetics research. His seminal book, Engineering Cybernetics, is recognized worldwide as the theoretical basis of automation control technology. For more than 40 years, this work has been widely cited and referenced by scientists from all over the world, and has become the most cited classic work in the field of automatic control.

Evaluation of Qian XuesenEngineering Cybernetics

Qian Xuesen pioneered the promotion of cybernetics to the field of engineering technology in "Engineering Cybernetics", which is a classic work of cybernetics, which is written in German.

Russian translation. In order to finely describe the static and dynamic properties of controlled objects, mathematical models are often established.

method. Successful mathematical models provide a more profound, focused, and accurate quantitative reflection of the essential characteristics of a controlled system.

With the help of the Lexix mathematical model, the engineer can clearly see the control variables.

The relationship with the state of the system and how to change the control variables to achieve the expected state of the system's parameters and keep the system running reliably. Mathematical models can also help people fight against harmful interference from the outside world, pointing out the measures that must be taken to eliminate such interference.

Applications:

The automatic adjustment of mechanical and physical variables such as speed, temperature, and pressure is the earliest industrial application, and the automatic adjustment theory is a theoretical summary of technological progress in this period. Second world war.

The appearance of automated air defense systems and self-seeking missile systems in front of and behind facilitated the widespread application of servo mechanisms and automatic control technologies.

After the development and improvement of the theory of automatic regulation, it was upgraded to the theory of automatic control. With the advent of the first electronic digital computer, the technical community began to develop automata and automatic control systems with numerical computing capabilities and logic analysis functions.

The function of intelligent control is immediately obtained.

With cheap microcomputers.

A large number of people have entered the market, and the automatic cavity engineering system has entered the intelligent stage in an all-round way, and the full meaning of automatic control theory has been realized.

pwd=pd7f Extraction Code: A sub-discipline of pd7f cybernetics, it is the theory of the analysis, design, and operation of controlled engineering systems. The French physicist and mathematician Ampère used the term cybernetics in 1834 to refer to the science that governs the country.