控制系統(tǒng)的介紹英文翻譯-展示頁
2024-11-17 13:35本頁面
【正文】 arge sophisticated systems could be put together very pactly thereby allowing a putational and control advantage coupled with systems of small physical dimensions. We were now capable of designing and flying miniputers and landing men on the moon. The post sputnik age saw much effort in system optimization and adaptive systems. Finally, the refinement of the chip and related puter development has created an explosion in putational capability and putercontrolled devices. This has led to many innovative methods in manufacturing methods. such as puteraided design and manufacturing, and the possibility of unprecedented increases in 5 industrial productivity via the use of putercontrolled machinery, manipulators and robotics. Today control systems is a science with the art still playing an important role. Much mathematical sophistication has been achieved with considerable interest in optimal control system. The modern approach, having been established as a science, is being applied not only to the traditional control systems, but to newer problems like urban analysis, econometrics, transportation, biomedical problems, energy analysis, and a host of similar problems that affect modern man. BIASIC CONCEPTS Control system analysis is concerned with the study of the behavior of dynamic systems. The analysis relies upon the fundamentals of system theory where the governing differential equations assume a causeeffect relationship. A physical system may be represented as shown in Fig. where the excitation or input is x(t) and the response or output is y(t) . A simple control system is shown in Fig. Here the output is pared to the input signal, and the difference of these two signals bees the excitation to the physical system, and we speak of the control system , such as described in Fig . involves the obtaining of y(t) given the input and output are specified and we wish to design the system characteristics, then this is known as synthesis. SYSTEMS DESCRIPTION Because control systems occur so frequently in our lives, their study is quite important. Generally, a control system is posed of several subsystems connected in such a way as to yield the proper causeeffect relationship. Since the various subsystems can be electrical, mechanical, pneumatic, biological, etc., the plete description of the entire system requires the understanding of fundamental relationships in many different disciplines. Fortunately, the similarity in the dynamic behavior of different physical systems makes this task easi
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