Cited 0 time in webofscience Cited 0 time in scopus

A Novel Mitigation Method for Noise-Induced Temperature Error in CPU Thermal Control

Title
A Novel Mitigation Method for Noise-Induced Temperature Error in CPU Thermal Control
Authors
Lee, JuseungKim, DohwanPark, Kyung-JoonEun, Yongsoon
DGIST Authors
Park, Kyung-JoonEun, Yongsoon
Issue Date
2020-05
Citation
IEEE Access, 8, 94000-94009
Type
Article
Article Type
Article
Author Keywords
Temperature measurementTemperature controlTemperature sensorsThermal noiseReal-time systemsNoise measurementZero-mean thermal sensor noisenoise-induced errorthermal control for real-time systems
Keywords
SYSTEMSDESIGN
ISSN
2169-3536
Abstract
It has been reported that in the thermal control of real-time computing systems, zero-mean thermal sensor noise can induce a significant steady-state error between the target and actual temperatures of a CPU. Unlike the usual case of zero-mean sensor noise resulting in zero-mean temperature fluctuations around the target value, this noise-induced temperature error manifests in the form of a bias, i.e., the mean of the error is not zero. Existing work has analyzed the main cause of this error and produced a solution, known as TCUB-VS. However, this existing solution has a few drawbacks: the transient response is sluggish, and the exact value of the noise standard deviation is necessary in the design stage. In this paper, we propose a novel method of avoiding noise-induced temperature error while overcoming the limitations of the existing work. The proposed method uses an estimated CPU temperature for the part of the controller that is sensitive to noise while using actual measurements for the other part of the controller. In this way, our proposed method eliminates noise-induced temperature error and overcomes the drawbacks of the existing work. To show the efficacy of our proposed method, theoretical results are obtained using a stochastic averaging approach, and experimental results are presented along with simulations.
URI
http://hdl.handle.net/20.500.11750/12061
DOI
10.1109/ACCESS.2020.2995184
Publisher
Institute of Electrical and Electronics Engineers Inc.
Related Researcher
  • Author Eun, Yongsoon DSC Lab(Dynamic Systems and Control Laboratory)
  • Research Interests Resilient control systems; Control systems with nonlinear sensors and actuators; Quasi-linear control systems; Intelligent transportation systems; Networked control systems
Files:
Collection:
Department of Information and Communication EngineeringCSI(Cyber-Physical Systems Integration) Lab1. Journal Articles
Department of Information and Communication EngineeringDSC Lab(Dynamic Systems and Control Laboratory)1. Journal Articles


qrcode mendeley

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE