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The authors point out that current techniques for the quantification of blood glucose, particularly in the home environment, have lacked precision. In their investigations into the rotary effects of glucose upon the polarization vector of light, the authors have developed a polarimeter capable of microdegree precision. At the present sensitivity, normal physiological levels of blood glucose could...
An oxygen measurement system using the phase delay of ultrasonic waves has been developed. The error estimation for the sequence of data acquisition and processing and the analysis of updated data are presented here. The actually measured and the estimated errors are compared as a final step to verify the system performance. The actually measured errors were close to or even less than the estimated...
A discussion is presented of the performance of the Smith delay compensator (SDC) of Smith predictor during the closed-loop operation of continuous linear systems with an appreciable time delay. The basic principle of the SDC is to design the closed-loop system in such a way that the system response is a delayed version of the delay-free system response, where the delay is the plant transport lag...
The authors focus on the design and implementation of an integral pulse-frequency-modulated (IPFM) controller with a self-tuning Smith delay compensator (SDC) for the closed-loop sodium nitroprusside regulation of postoperative blood pressure. A unified scheme based on the least-mean-squares algorithm is proposed to estimate the plant parameters and transport lag needed to update the SDC model. This...
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