Simulations Research on Smith Predictive Adaptive Fuzzy-PID Compound Controller in the Temperature Control System of Microchip Level PCR Instrument

2013 ◽  
Vol 373-375 ◽  
pp. 1324-1331 ◽  
Author(s):  
Hong Hua Liao
Keyword(s):  
Control System ◽  
Time Delay ◽  
Temperature Control ◽  
Fast Response ◽  
Temperature Control System ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Control Temperature ◽  
Adaptive Fuzzy ◽  
Precision Temperature

Study on the temperature controlling optimization problem of a novel microchip level PCR instrument, a compound control scheme based on Smith predictive and adaptive Fuzzy-PID is presented. Because the temperature control system of microchip level PCR instrument is a time-varying, non-linear and pure time delay complex system, to achieve the different temperature zones rapid switching and the temperature precision controlling is easy to be affected by time delay factor, it may encounter problems such as large overshoot, and even poor stability in the control of system with time delay. In this system, Smith predictable compensation control temperature algorithm should be adopted to decrease the overshooting and oscillating, adaptive Fuzzy-PID control temperature algorithm should be adopted to solve the problem of low precision and poor capability because of the fuzzy rules roughness. The simulation results show that the Smith predictive adaptive Fuzzy-PID temperature control algorithm has the fast response, high precision temperature controlling and strong robust properties, and it can provide a reference for the intelligent temperature control system design of microchip level PCR instrument. Keywords: Microchip level PCR instrument; Smith prediction; Adaptive Fuzzy-PID controlling algorithm; Temperature control system

The Design and Simulation of Control System for Electrical Heating

2013 ◽  
Vol 325-326 ◽  
pp. 1193-1196
Author(s):  
Guo Sheng Xu
Keyword(s):  
Control System ◽  
Pid Control ◽  
Fuzzy Controller ◽  
Electrical Heating ◽  
Temperature Control System ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Adaptive Fuzzy ◽  
Fuzzy Pid Controller ◽  
Electric Boiler

In view of the fact that the performance of any conventional PID control can t meet the requirement an electric boiler temperature control system, this paper puts forward a kind of improved algorithm for tuning the PID parameters. an adaptive fuzzy controller with adjusting factor is proposed in this paper. Experimental results illustrate that the adaptive fuzzy PID controller achieved the system performance index. The method of adaptive fuzzy PID control is a ideal method.

The Temperature Control System Design of Microchip Level PCR Instrument Based on SOPC

2013 ◽  
Vol 336-338 ◽  
pp. 1020-1027 ◽  
Author(s):  
Hong Hua Liao
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Temperature Sensor ◽  
Design Method ◽  
Copper Wire ◽  
Temperature Control System ◽  
Fuzzy Pid ◽  
Wire Temperature ◽  
Adaptive Fuzzy ◽  
Micro Pump

A design approach of the temperature control of a novel microchip level PCR instrument based on SOPC technique is presented in this paper. The soft-core processor with RISC framework, NIOS II, which embedded in the FPGA (CyclonIII EP3C16F484C6) of Altera corp., is used as the key component to control the PWM controller achieving the temperature control of the micro-chamber stationary microchip level PCR instrument, to control the Avalon stream slave peripheral acquiring controller achieving the temperature signal detection by the flexible snake like copper wire temperature sensor, and to control the micro-pump and the micro-valve achieving the sample injection and sample outflow controlling. Simultaneously, the control temperature algorithm based on the Smith predictive and adaptive Fuzzy-PID is adapted in this system. The design of PCR microchip, the Smith predictive adaptive Fuzzy-PID temperature control algorithm, the hardware framework and the software design of control system are mainly introduced. And the simulation results testified the correctness of the design method and practicability. Keywords: Microchip level PCR instrument; Smith predictive and adaptive Fuzzy-PID controller; SOPC; The flexible snake like copper wire temperature sensor

The Control System of Test Bench for Thermal Insulating Properties of Building Doors and Windows Based on Fuzzy-PID Control

2013 ◽  
Vol 385-386 ◽  
pp. 968-972
Author(s):  
Zhi Guang Gong ◽  
Chun Hui Du ◽  
Ya Jie Li ◽  
Jiang Li Yu
Keyword(s):  
Control System ◽  
Temperature Control ◽  
Pid Control ◽  
Test Bench ◽  
Temperature Control System ◽  
Fuzzy Pid ◽  
Fuzzy Pid Control ◽  
Temperature Measuring ◽  
Thermal Insulating ◽  
Insulating Properties

According to many temperature measuring points, the large delay, nonlinear and time-varying characteristics of the temperature control system of test bench for thermal insulating property, By combining fuzzy-PID control technology with Zigbee WSN technology, a design scheme of the automatic control system of test bench for thermal insulating properties of building doors and windows is put forward, which is low-cost and high precision. The microprocessor of sensor node adopts CC2530 wireless MCU. The system adopts Zigbee wireless network and RS-485 bus to transmit digital temperature and humidity signals, and is no wiring, intermediate links are lessened, transmission error is reduced and temperature measuring accuracy is improved. By adopting Fuzzy-PID control, the self-adaptability of controller and the precision of temperature control is improved.

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