Active and accurate temperature control of terahertz functional devices via micro-hotplate system

2021 ◽  
Author(s):  
Yuting Zhang ◽  
yuan xiao hao ◽  
Wei Huang ◽  
Wentao Zhang ◽  
Jiaqi Wang
Keyword(s):  
Active Control ◽  
Temperature Control ◽  
Control Method ◽  
Control Process ◽  
Metamaterial Absorber ◽  
Temperature Control System ◽  
Heating And Cooling ◽  
Accurate Temperature ◽  
Silicon Based ◽  
Accurate Temperature Control

Abstract Based on the problem that the intensity of excitation source is not easy to regulate by the traditional active control method, this paper presents an accurate temperature control system based on micro-hotplate for the first time. This system realizes the active control of terahertz metamaterial functional devices, and implements various functions by using the proposed accurate temperature control process. The temperature control characteristics of micro-hotplate are introduced into the design of terahertz functional devices by taking a vanadium dioxide (VO₂ ) metamaterial absorber as an example. In this design, a silicon-based micro-hotplate is used to heat the metamaterial absorber. According to the phase transition characteristics of VO₂ , the alteration of temperature leads to conductivity change, so as to realize the active control of the absorber. At the same time, this paper also analyzes the heating and cooling time of the micro-hotplate. The simulation results show that, by using the micro-hotplate to heat the metamaterial functional devices, the temperature adjustment speed is reasonably high and the controllable performance is excellent. The test results shows that the surface temperature can be controlled between 40 ℃ and 80 ℃ , and the temperature difference of the working area can be kept within 1℃ . The temperature control of the micro-hotplate is accurately controlled, resulting in the great performance of the metamaterial functional devices.

A Fast and Accurate Temperature-Control System Using Smart Temperature Sensors.

1998 ◽  
pp. 247-254
Author(s):  
Paul R. van der Meer ◽  
Gerard C. M. Meijer ◽  
Michiel J. Vellekoop ◽  
Harry M. M. Kerkvliet ◽  
Ton J. J. van den Boom
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Temperature Sensors ◽  
Temperature Control System ◽  
Accurate Temperature ◽  
Accurate Temperature Control

Design of Automated Distillation Analyzer Based on STM32

2011 ◽  
Vol 383-390 ◽  
pp. 1215-1218
Author(s):  
Wen Gang Chen ◽  
Xiao Jie Song ◽  
Wei Liu
Keyword(s):  
Temperature Control ◽  
Control Method ◽  
Control Unit ◽  
Test Accuracy ◽  
Thermoelectric Cooler ◽  
Control Performance ◽  
Accurate Temperature ◽  
Wireless Module ◽  
And Control ◽  
Accurate Temperature Control

Aiming to solve the problems of inaccuracy in temperature control and the slow reaction in condensing system in the automated distillation analyzer, an approach which combining electrical fan and thermoelectric cooler was put forward, using STM32 as the control unit; accurate temperature control during the distillation process was realized, data collection and processing can be completed by the control unit, and the wireless module can accomplish communication and control the analyzer under the instructions of computer. With this temperature control method, the automation and test accuracy of distillation analyzer can be enhanced, thus ensuring better ratio of performance-to-price and control performance.

The Method of Improving Precision of Micro Injection Molding Machine Temperature Control

2013 ◽  
Vol 372 ◽  
pp. 354-359
Author(s):  
Sheng De Tang ◽  
Hong Xu ◽  
Da Ming Wu ◽  
Ya Jun Zhang
Keyword(s):  
Injection Molding ◽  
Temperature Control ◽  
Control Method ◽  
Polymer Melt ◽  
Molding Machine ◽  
Micro Injection Molding ◽  
Injection Molding Machine ◽  
Mathematical Algorithm ◽  
Accurate Temperature ◽  
Accurate Temperature Control

the temperature control accuracy of polymer melt is the main factor affecting quality precision of final products. In this paper, we study the method of improving the precision of temperature control based on control system of micro injection molding machine. In order to avoid big overshoot in the traditional PID control, we use gradual approximation control method based on gradual approximation mathematical algorithm to realize fast and accurate temperature control of the micro injection molding machine. Experiment results show that effective combination of the traditional PID and gradual approximation method can realize accurate temperature control of micro injection molding machine, and precision of temperature control can be improved up to±0.5°C.

scholarly journals Slow Mode-Based Control Method for Multi-point Temperature Control System

Processes ◽  
2019 ◽  
Vol 7 (8) ◽  
pp. 533 ◽  
Author(s):  
Song Xu ◽  
Seiji Hashimoto ◽  
Wei Jiang ◽  
Yuqi Jiang ◽  
Katsutoshi Izaki ◽  
...  
Keyword(s):  
Control Systems ◽  
Transient Response ◽  
Temperature Control ◽  
Thermal Processing ◽  
High Performance ◽  
Control Method ◽  
Temperature Control System ◽  
Slow Mode ◽  
Point Temperature ◽  
Accurate Temperature

In recent years, thermal processing systems with integrated temperature control have been increasingly needed to achieve high quality and high performance. In this paper, responding to the growing demands for proper transient response and to provide more accurate temperature controls, a novel slow-mode-based control (SMBC) method is proposed for multi-point temperature control systems. In the proposed method, the temperature differences and the transient response of all points can be controlled and improved by making the output of the fast modes follow that of the slow mode. Both simulations and experiments were carried out, and the results were compared to conventional control methods in order to verify the effectiveness of the proposed method.

Design of Automated Distillation Analyzer Based on STM32

2012 ◽  
Vol 433-440 ◽  
pp. 2607-2610
Author(s):  
Wen Gang Chen ◽  
Xiao Jie Song ◽  
Wei Liu
Keyword(s):  
Temperature Control ◽  
Control Method ◽  
Control Unit ◽  
Test Accuracy ◽  
Thermoelectric Cooler ◽  
Control Performance ◽  
Accurate Temperature ◽  
Wireless Module ◽  
And Control ◽  
Accurate Temperature Control

Aiming to solve the problems of inaccuracy in temperature control and the slow reaction in condensing system in the automated distillation analyzer, an approach which combining electrical fan and thermoelectric cooler was put forward, using STM32 as the control unit; accurate temperature control during the distillation process was realized, data collection and processing can be completed by the control unit, and the wireless module can accomplish communication and control the analyzer under the instructions of computer. With this temperature control method, the automation and test accuracy of distillation analyzer can be enhanced, thus ensuring better ratio of performance-to-price and control performance.

scholarly journals Development of Accurate Temperature Control in Hot Strip Mill

1995 ◽  
Vol 81 (3) ◽  
pp. 191-196
Author(s):  
Takashi ODA ◽  
Yoshitaka KONDO ◽  
Seiji KONISHI ◽  
Hironori MURAKAMI ◽  
Masayoshi SUEHIRO ◽  
...  
Keyword(s):  
Temperature Control ◽  
Hot Strip Mill ◽  
Hot Strip ◽  
Accurate Temperature ◽  
Accurate Temperature Control

Designed of Wireless Intellectualized Temperature Control System in Tobacco Preserve Based on Fuzzy-PID

2013 ◽  
Vol 416-417 ◽  
pp. 890-894
Author(s):  
Xiao Hui Guo
Keyword(s):  
Temperature Control ◽  
Control Method ◽  
Control Function ◽  
Temperature Control System ◽  
Pid Controllers ◽  
Fuzzy Pid ◽  
Single Chip ◽  
Control Effect ◽  
Set Up ◽  
The Individual

Tobacco Warehousing is chiefly applied to preserve the tobacco that is separated into leaf and stem so that the tobacco moisture is controlled at the range of technology demand.The present control method of tobacco save is that the references of every PID control link are set up and adjusted by human experience. So, the control effect varies with the individual and the output tobacco moisture can't maintain stable.The fuzzy-PID temperature system is based on CC2430 single chip. It includes the power source, the manipulative algorithm, the temperature examination , the correspondence of up PC and the output-control of the switch value and so on. Computer takes the parameter deviation and the deviation change as input, and the PID controllers parameters of ΔKp, Δki, ΔKd as output. The sub program realized the corresponding events by completing zone bit and zone bit judgment. The main program realized temperature control function by calling the wireless micro-controller sends a signal to the charged unit

scholarly journals A System for Accurate Temperature Control of Small Fluid Baths

1979 ◽  
Vol 22 (87) ◽  
pp. 389-391
Author(s):  
V. I. Morgan
Keyword(s):  
Temperature Control ◽  
Electrical Heating ◽  
Temperature Controller ◽  
Accurate Temperature ◽  
Accurate Temperature Control

AbstractA temperature controller is described which uses a thermistor sensor and electrical heating to maintain the temperature of a small bath of fluid to within a few millidegrees.

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