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The design and testing of a PI controller ASIC.

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<mark>Journal publication date</mark>1995
<mark>Journal</mark>Microprocessors and Microsystems
Issue number1
Volume19
Number of pages8
Pages (from-to)15-22
Publication StatusPublished
<mark>Original language</mark>English

Abstract

This paper describes the design and testing of an application specific integrated circuit (ASIC) which provides the functionality of a digital proportional plus integral error actuated controller with auxillary feedback. The ASIC controller can provide discrete time control of a range of continuous time systems by receiving analogue inputs via a single multiplexed analogue to digital converter and providing an analogue output via a digital to analogue converter. The controller has a fixed sampling rate but allows both proportional and integral gains to be adjustable using a digital control word. The controller functions are performed in hardware on a single ASIC so providing for the same functionality as a software algorithm without the need for embedded software.