1, system engineering is a branch of system science, which is actually the practical application of system science. It can be used in all aspects of large-scale systems, including human society, ecological environment, natural phenomena, organization and management, such as environmental pollution, population growth, traffic accidents, chemical processes, information networks and so on.
2. Systems engineering is a theory and method that takes large-scale complex systems as the research object, and designs, develops, manages and controls them according to certain purposes, so as to achieve the overall effect.
3. System engineering is an engineering technology. However, systems engineering is a big engineering technology category that includes many kinds of engineering technologies. It covers a wide range, including mathematics, physics, chemistry, biology and other natural sciences, as well as sociology, psychology, economics, medicine and other disciplines related to people's thinking, behavior and ability.
4. System engineering is an important methodology of modern management, and it is a science to manage the overall situation of engineering system by using emerging theories such as system theory, cybernetics and information theory.
To sum up, systems engineering is both a technical process and a management process. System engineering is a subject that applies modern mathematical methods and tools to study and discuss the analysis, planning, design, organization and management, evaluation and other issues of general systems, and make them achieve the whole.
The basic theories needed by systems engineering include operational research, cybernetics, information theory, management science and so on. 1940 was first applied and system engineering was proposed. When Bell Laboratories developed the telephone communication network, it divided the development work into five stages: planning, research, development, application and general engineering, and put forward the principle of queuing theory.
1940 Manhattan, USA plans to develop an atomic bomb to coordinate the application of system engineering principles. Two examples of conscious application of systems engineering methods and great achievements are the Apollo program of American moon landing rocket and the Nordic transnational power grid coordination program.