General discussions on control systems

This chapter deals with from basic control systems like fundamentals on PID, ON-OFF controls including feed forward, cascade, ratio, lead lag controls. Functioning of microprocessors, microcontrollers have also been included as a part of recapitulations. Discussions on CLCS and OLCS includes basic loop implementations for various kinds of control loops and logics in process control system. As a part of modern digital control network implementation, hierarchical controls have been described also detailing functions at each level. As a part of control loop analysis, brief discussions on Fourier and Laplace transformations have also been covered so as to study control loop responses under various input conditions. Basics of control loop synthesis as well as state space basics have also been included. Use of various control loop models are part and parcel of modern control studies hence various such as MBC, MPC, PMBC, IMC involving from SISO to MIMO loops have been covered Naturally, brief discussions on various computing methods and linearization methods have been covered. To complete the discussions basics on control system optimization and associated software issues have also been included.