Titlebook: Sourcebook Of Control Systems Engineering; L. C. Westphal Book 1995 Chapman & Hall 1995 Hardware.Sensor.Standard.System.communication.desi

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Sources of system models,ny aspects of engineering the system. So, while the previous work did not use mathematical models of the controlled plant, these will be pervasive in what follows. In fact, the use of mathematical models is fundamental to use of control theories.

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Introduction and overview,The feedback control systems specialist has a multifaceted job involving several different types of tasks; an alternative point of view is that control systems encompass several different sub-specialties from which an engineer might choose to emphasize only one or two. The aspects of the systems to be understood include:

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Sensors and instrumentation,In this book we choose to work from the process back to the controller on a system such as is indicated abstractly in Fig. 3.1 and more specifically in Fig. 3.2. The immediate connections to the process are the sensors which measure the state of the process and the actuators which influence the control elements to adjust the process.

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Computer systems hardware,The connecting hardware element between sensors and actuators is the computer system, with connections being performed using various communications strategies (Chapter 7). In this chapter some of the essential aspects of computers in a real-time environment are introduced.

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Computer software,The computer software encodes the control algorithms and the logical commands for the interfacing of the I/O and for the emergency and other routines which the system is expected to perform.

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Communications,In this chapter we consider the connection of computer control system components at three levels: simple wiring, instruments to computers using digital signalling, and computer networking.