Investigation on Temperature Control Model of the Focal Cooling Human Physiological System

For efficient temperature control of the cooling device for medical purposes, accurate modeling of the focal cooling system taking into account the human physiological reaction and nonlinearity of the thermoerectric device, is required. In this paper, we examined about model parameters identification in order to establish a mathematical model for a focal cooling device for a living body using a Peltier device. Cooling experiments applied input constant voltage were performed to identify the model parameters. The temperature response data are obtained for every 0.1V, from 0.1V to 1.8V. As a result of the parameters identification, it was shown that some unknown parameters vary with a certain tendency to the input voltage. As a result of comparison between simulation value using identified parameters and experimental value, it was shown that one can simulate results in the error range of the parameter identification in the control surface.

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Study on model parameters of a focal cooling device using a Peltier element for a living body

Transactions of the JSME (in Japanese) ◽

10.1299/transjsme.16-00473 ◽

2017 ◽

Vol 83 (849) ◽

pp. 16-00473-16-00473

Author(s):

Kenyu UEHARA ◽

Koji MORI ◽

Takashi SAITO

Keyword(s):

Model Parameters ◽

Cooling Device ◽

Peltier Element ◽

Living Body ◽

Focal Cooling

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Locomotor Development Prediction Based on Statistical Model Parameters Identification

Computational and Mathematical Methods in Medicine ◽

10.1155/2012/548208 ◽

2012 ◽

Vol 2012 ◽

pp. 1-5

Author(s):

A. V. Wildemann ◽

A. A. Tashkinov ◽

V. A. Bronnikov

Keyword(s):

Optimization Problem ◽

Real Data ◽

Parameters Identification ◽

Model Parameters ◽

Large Set ◽

Constrained Optimization Problem ◽

Unknown Parameters ◽

Locomotor Development ◽

Feasible Solutions ◽

The Individual

This paper introduces an approach for parameters identification of a statistical predicting model with the use of the available individual data. Unknown parameters are separated into two groups: the ones specifying the average trend over large set of individuals and the ones describing the details of a concrete person. In order to calculate the vector of unknown parameters, a multidimensional constrained optimization problem is solved minimizing the discrepancy between real data and the model prediction over the set of feasible solutions. Both the individual retrospective data and factors influencing the individual dynamics are taken into account. The application of the method for predicting the movement of a patient with congenital motility disorders is considered.

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Study on Model Parameters of Focal Cooling Device Using a Peltier Element for a Living Body

Volume 3: Biomedical and Biotechnology Engineering ◽

10.1115/imece2016-67387 ◽

2016 ◽

Author(s):

Kenyu Uehara ◽

Kentaro Miyago ◽

Koji Mori ◽

Takashi Saito

Keyword(s):

Control Function ◽

Internal Resistance ◽

Model Parameters ◽

Cooling Device ◽

Peltier Element ◽

Cooling Performance ◽

Living Body ◽

Dependent Relation ◽

Focal Cooling ◽

Parameter Values

Cooling treatment is known as one of the effective treatment for injury. It has an optimum cooling temperature level depending on a symptom or an injury. Hence a highly precise temperature control function is required for a cooling device for this kind of treatment. A mathematical model of cooling device using a Peltier element is necessary to realize its functions. In this paper, we examined the characteristics of model parameters by identification experimentally and comparison of its values. Three cooling devices (A, B and C) were used. A Peltier element of device A and device B were the same size with different cooling performance respectively. Whereas a Peltier element of device C was bigger than the two devices. Effects of devices size and cooling performance on the model parameters were investigated. It is shown that most of the parameter values were increased in the device C. The Seebeck coefficient and the internal resistance had little dependent relation with the device size while the other heat conductances were strongly dependence upon the size. From these results, the characteristics of each parameters became mostly evident by comparison of three devices of different sizes and cooling performances. However, it is required to analyze more and utilize different devices to carry out the development of cooling device by using this model.

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J022014 Research on the mathematical model and temperature control of a focal cooling device for biological objects

The Proceedings of Mechanical Engineering Congress Japan ◽

10.1299/jsmemecj.2012._j022014-1 ◽

2012 ◽

Vol 2012 (0) ◽

pp. _J022014-1-_J022014-5 ◽

Cited By ~ 1

Author(s):

Yasumi UKIDA ◽

Takuya ICHIKAWA ◽

Takashi SAITO ◽

Hiroyuki KEDA ◽

Masami FUJII ◽

...

Keyword(s):

Mathematical Model ◽

Temperature Control ◽

Cooling Device ◽

Biological Objects ◽

Focal Cooling ◽

The Mathematical Model

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A High Angle, Double Tilting Cold Stage for the AEI EM7

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100052262 ◽

1974 ◽

Vol 32 ◽

pp. 450-451

Author(s):

P.R. Swann ◽

A.E. Lloyd

Keyword(s):

Habit Plane ◽

Temperature Control ◽

Tilt Angle ◽

Cooling System ◽

Thermal Drift ◽

High Angle ◽

Cold Stage ◽

High Degree ◽

Better Than

Figure 1 shows the design of a specimen stage used for the in situ observation of phase transformations in the temperature range between ambient and −160°C. The design has the following features a high degree of specimen stability during tilting linear tilt actuation about two orthogonal axes for accurate control of tilt angle read-out high angle tilt range for stereo work and habit plane determination simple, robust construction temperature control of better than ±0.5°C minimum thermal drift and transmission of vibration from the cooling system.

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A simplified method of temperature control maximizing productivity of the batch reactor; The effect of inertia of the cooling system

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19820454 ◽

1982 ◽

Vol 47 (2) ◽

pp. 454-464 ◽

Cited By ~ 1

Author(s):

František Jiráček ◽

Josef Horák

Keyword(s):

Mathematical Model ◽

Temperature Control ◽

Cooling System ◽

Batch Reactor ◽

Exothermic Reaction ◽

Cooling Capacity ◽

Variable Activity ◽

Simplified Method ◽

Opening And Closing ◽

Time Of Operation

The effect has been studied of the inertia of the cooling system on the reliability of control of the temperature of the reaction mixture. The study has been made using a mathematical model of the batch reactor with an exothermic reaction. The temperature has been controlled by a two-level controller opening and closing the flow of the coolant. The aim of the control has been to maintain a constant value of the degree of utilization of the cooling capacity of the reactor. The instantaneous value of the degree of utilization has been assessed from the ratio of times for which the cooling system is idle to the time of operation. The reliability of control has been studied for variable activity of the catalyst.

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