IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
LETTER
A design of adaptive PID controller based on thermal characteristics of mobile application processors
Hyun Hak ChoChang Min EunOk Hyun Jeong
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2019 Volume 16 Issue 7 Pages 20190084

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Abstract

With the advance of process technology, the power density of chipsets has rapidly increased, which has resulted in thermal issues. Modern mobile devices use a thermal management model (TMM) to solve such thermal issues. In this paper, we propose an adaptive proportional-integral-derivative (PID) controller based on mobile CPU system characteristics. In the proposed method, we dynamically adjust the PID constants according to the thermal characteristics. We evaluate thermal mitigation capability and performance using a commercial smartphone. The results show that our scheme decreases the overall system temperature by 5.13% and simultaneously improves the system performance by 5.51%.

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© 2019 by The Institute of Electronics, Information and Communication Engineers
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