scholarly journals Research on central heating system control strategy based on genetic algorithm

2017 ◽  
Author(s):  
Sa Ding ◽  
Jianhua Yang ◽  
Wei Lu ◽  
Zhipeng Duan
Keyword(s):  
Genetic Algorithm ◽  
Control Strategy ◽  
Heating System ◽  
System Control ◽  
Central Heating

Design of the Heating Regulation Controller Based on ARM

2012 ◽  
Vol 157-158 ◽  
pp. 1453-1457
Author(s):  
Qing Jie Meng ◽  
Yi Qian Liu
Keyword(s):  
Operating System ◽  
Heating Temperature ◽  
High Sensitivity ◽  
Heating System ◽  
System Control ◽  
Outdoor Temperature ◽  
Time Performance ◽  
Central Heating ◽  
Good Energy ◽  
Valve Opening

According to the shortage of the central heating system control equipment, design the heating regulation controller based on the embedded Linux operating system with the 32-bit processor S3C2440 as core. The system determine the second supply water temperature of heating network by measuring the outdoor temperature, and adjust heating temperature by the electric valve opening. This system has advantages of high sensitivity, good anti-interference abilityand good real-time performance, and good energy-saving effects.

Experimental Analysis of the Coefficient of Building Comprehensive Property

2014 ◽  
Vol 694 ◽  
pp. 237-241
Author(s):  
Zhao Han ◽  
Chun Hua Sun ◽  
Cheng Ying Qi ◽  
Guo Qiang Xia ◽  
Bo Shao
Keyword(s):  
Data Collection ◽  
Heat Balance ◽  
Heating System ◽  
System Control ◽  
Central Heating ◽  
Data Collection And Analysis ◽  
And Control ◽  
Secondary Side ◽  
Comprehensive Property

According to the heating theory of heat balance and heat consumption of buildings[1], derivate formula for the coefficient of building comprehensive property. Choose five typical districts for the Study. The coefficient of building comprehensive property can be used as the secondary side of adjustment and control for the water temperature conditions and methods[2]. By all typical districts data collection and analysis, verify that the construction of the coefficient of building comprehensive property in guiding role of central heating system control.

scholarly journals Failure Analysis of Premature Corrosion of HF Seam-Welded Steel Pipe in Central Heating System

2021 ◽  
Author(s):  
Dorota Tyrala ◽  
Bogdan Pawlowski
Keyword(s):  
High Frequency ◽  
Energy Dispersive Spectrometry ◽  
Weld Line ◽  
Welding Process ◽  
Heating System ◽  
Bond Line ◽  
Steel Pipe ◽  
Huge Number ◽  
Welded Steel ◽  
Central Heating

AbstractPremature corrosion in the form of longitudinal cracking in a high-frequency (HF) induction seam-welded steel pipe occurred after just 24 months in service. The failed pipe was investigated to reveal the main cause of its failure, and the results of microstructural examinations (light optical microscopy, scanning electron microscopy with energy-dispersive spectrometry) suggest that the failure resulted from an HF induction welding process defect—a so-called cast weld, that is, a huge number of iron oxides in the weld line caused by insufficient ejection of the molten metal from the bond line.

Towards a new design with generic modeling and adaptive control of a transformable quadrotor

2021 ◽  
pp. 1-31
Author(s):  
S.H. Derrouaoui ◽  
Y. Bouzid ◽  
M. Guiatni
Keyword(s):  
Adaptive Control ◽  
Control Strategy ◽  
Experimental Tests ◽  
Generic Model ◽  
System Control ◽  
System A ◽  
Viable Solution ◽  
Generic Modeling ◽  
Adaptive Control Strategy ◽  
The Stability

Abstract Recently, transformable Unmanned Aerial Vehicles (UAVs) have become a subject of great interest in the field of flying systems, due to their maneuverability, agility and morphological capacities. They can be used for specific missions and in more congested spaces. Moreover, this novel class of UAVs is considered as a viable solution for providing flying robots with specific and versatile functionalities. In this paper, we propose (i) a new design of a transformable quadrotor with (ii) generic modeling and (iii) adaptive control strategy. The proposed UAV is able to change its flight configuration by rotating its four arms independently around a central body, thanks to its adaptive geometry. To simplify and lighten the prototype, a simple mechanism with a light mechanical structure is proposed. Since the Center of Gravity (CoG) of the UAV moves according to the desired morphology of the system, a variation of the inertia and the allocation matrix occurs instantly. These dynamics parameters play an important role in the system control and its stability, representing a key difference compared with the classic quadrotor. Thus, a new generic model is developed, taking into account all these variations together with aerodynamic effects. To validate this model and ensure the stability of the designed UAV, an adaptive backstepping control strategy based on the change in the flight configuration is applied. MATLAB simulations are provided to evaluate and illustrate the performance and efficiency of the proposed controller. Finally, some experimental tests are presented.

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