Introduction to Control Systems University of （大学介绍控制系统）.pdfVIP

1 Introduction to Control Systems In this lecture, we lead you through a study of the basics of control system. After completing the chapter, you should be able to Describe a general process for designing a control system. Understand the purpose of control engineering Examine examples of control systems Understand the principles of modern control engineering. Realize few design examples. Textbook 1. Richard C. Dorf and Robert H. Bishop, Modern Control Systems, Prentice Hall, 2001. 1.1 INTRODUCTION Control engineering is based on the foundations of feedback theory and linear system analysis, and it generates the concepts of network theory and communication theory. Accordingly, control engineering is not limited to any engineering discipline but is applicable to aeronautical, chemical, mechanical, environmental, civil, and electrical engineering. A control system is an interconnection of components forming a system configuration that will provide a desired system response. The basis for analysis of a system is the foundation provided by linear system, which assumes a cause- effect relationship for the components of a system. A component or process to be controlled can be represented by a block as shown in Figure 1. 1 Basic Electronics 2 Input Process Output Figure 1 Process under control An open-loop control system utilizes a controller or control actuator to obtain the desired response as shown in Figure 2. The open-loop control system utilizes an actuating device to control the process directly without using device. An example of an open-loop control system is an electric toaster. Output response