Design of a PID Controller Circuit Employing CDBAs

• Published in: International journal of electrical engineering & education Vol. 43; no. 1; pp. 48 - 56
• Main Author: Keskin, Ali Ümit
• Format: Journal Article
• Language: English
• Published: London, England SAGE Publications 01.01.2006; Manchester University Press; Sage Publications Ltd
• Subjects: Amplifiers; Applied sciences; Circuit properties; Circuits; Control systems; Controllers; Curriculum subjects: programmes and methods; Design engineering; Educational sciences; Electric, optical and optoelectronic circuits; Electrical engineering; Electrical engineering. Electrical power engineering; Electrical machines; Electronic circuits; Electronics; Exact sciences and technology; Micro- and nanoelectromechanical devices (mems/nems); Process controls; Reaction Time; Regulation and control; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Simulation; Teaching methods; Technical education; PID controller; process control; control system design; MEMS; control education; current mode circuits; CDBA; Analog circuit; Current-mode circuits; Control circuit; Precision engineering; Control synthesis; Micromachine; Technical Education; Current mode; Active circuit; Voltage mode; Microelectromechanical device; Electromechanical system; Electromechanical device; Operational amplifier; Process control; Control system; System design; Frequency domain method; Active component; Differential integral proportional control; Nanotechnology
• ISSN: 0020-7209; 2050-4578
• DOI: 10.7227/IJEEE.43.1.5

Proportional-integral-derivative (PID) controllers are one of the most important control elements used in the process control industry. In practice, voltage mode circuits (e.g., operational amplifiers) are largely used in analogue controllers. However, recent developments in the areas of nanotechnologies and micro-electromechanical systems (MEMS) necessitate fast operating active analogue circuits. This paper presents a PID controller circuit based on a newly introduced active universal component, so-called current differencing buffered amplifier (CDBA), and shows that the circuit performs quite well as a PID controller and offers the benefits of a current mode structure. An example is given to illustrate the application of this new active element. The development of the overall circuit relies on concepts introduced in the frequency domain, therefore it can be used as material for undergraduate-graduate circuits, systems and control courses.