Paper:

# Implementation of Fixed-Point Control Algorithms Based on the Modified Delta Operator and Form for Intelligent Systems

## Tatsu Aoki

Monozukuri Department, Tokyo Metropolitan College of Industrial Technology, 1-10-40 Higashi-Ohi, Shinagawa-ku, Tokyo 140-0011, Japan

The methodology we propose for realizing energy- and space-saving adaptive control algorithms is based on pulse width modulation (PWM) with a modified delta operator. The dynamic calculation range is at least twice that of the conventional range, making it very useful in embedded real-time intelligent and micromechatronic systems because complex control algorithms can be implemented in fixed-point arithmetic with short words. Simulation results for PID control and simple adaptive control demonstrate the practicality and effectiveness of our proposal.

*J. Adv. Comput. Intell. Intell. Inform.*, Vol.11, No.6, pp. 709-714, 2007.

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