Full details of control System introduction

Control System ppt

1. Control Systems Lecture 1: Introduction Dr. Mohammed Gulam Ahamad

2. What is Control System? A system Controlling the operation of anOther system. A system that can regulate itself and anOther system. A control System is a device, or set of devices tO manage, command, direct or regulate the behaviour of other device(s) or system(s).

3. Input OF Set point or reference • If a disturbance is generated within the system, it is called internal disfurbonce. While an external disturbance is generated outside the system. Definitions Controlle Manipulated Variable Output Or (ontrolled Variable Process Disturbances— A disturbance is a signal that tends tO adversely affect the value of the system. It is an unwanted input of the system.

4. Non- linear o Time varia Time invariant Time variant Time invariant linear Control System Natural Man made Manual Automatic Open- loo Closed-loop ° Non- linear linear

5. Types of Control System Adaptive Control System The dynamic characteristics of most control systems are not constant for several reasons. The effect of small changes on the system parameters is attenuated in a feedback control system. An adaptive control system is required when the changes in the system parameters are significant.

6. I Uni 4 Schænatic hernobyl

7. istory i8th Century James Watt's centrifugal governor for the speed control of a steam engine. i 9 z O s Minorsky worked on automatic controllers for steering ships. *93 s Nyquist developed a method for analyzing the stability of controlled systems 1 9 4 s Frequency response methods made it possible to design linear closed- loop control systems i 9 3os Root- locus method due to Evans was fully developed l 9 6 os State space methods, optimal control, adaptive control and l 9 8o S Learning controls are begun to investigated and developed. Present and on- going research fields. Recent application of modern control theory includes such non-engineering systems such as biological, biomedical, economic and socio-economic systems

8. Examples of Modern ConYroT Systems The UtohfMIT Desirous Roboté Haixl: A dextrous robotic hand having 18 degrees of freedom. developed ai a research iool by the Cenier for Engineering Design ai the Univasity of Utah and the Artificial Intelligence Lnboraiory at MIT. li is controlled by five Motorola 68000 microprocessors and actuated by 36 high- performance cl¢ctropo¢umatic acNators via high- socagth polyu›eric tendons. The kand bas three fingers and a Ihumb. II uses touch scnson azxl tendons for c‹x›trol. /1?hotogniph by Michael Milochik. Courtesy of Univcnity of Utah.J

9. ” 3- Text Books i. Control Systems Engineering, (6 t h Edition) By: Norman S. Nise. 2. Modern Control Systems, (12'' Edition) By: Richard C. Dorf and Robert H. Bishop. Schaum's Outline of Feedback and Control Systems, (z" d Edition) By: Joseph J. Distefano, Allen R. Stubberud, and Ivan J. Willaims. N P M A IT S. N i 5 E CONTROL SYSTEMS

10. Referen 4. s- Modern Control Engineering, (ş' h Edition) By: Katsuhiko Ogata. z. Basic Feedback Controls in Biomedicine. By: Charles S. Lessard. 3. Feedback Control of Dynamic Systems, (6 t ' Edition) By: Gene Franklin, J.D. Powell, and Abbas Emami-Naeiøi Feedback Systems: An Introduction for Scientists and Engineers, by Karl J. Åström and Richard M. Murray. Physiological Control Systems: Analysis, Simulation and Estimation, by: Michael C. K. Khoo.