scholarly journals Test and Analysis of Stepper Motor’s Noise in HVAC’s Ventilation Valve

2021 ◽  
Vol 2095 (1) ◽  
pp. 012063
Author(s):  
Changxin Cai ◽  
Yongjun Chen ◽  
Ruiling Ouyang
Keyword(s):  
Control System ◽  
Air Conditioning ◽  
Block Diagram ◽  
Control Ventilation ◽  
Control Circuit ◽  
Stepper Motor ◽  
Important Criterion ◽  
Current Waveform ◽  
Automotive Air Conditioning

Abstract With the application of automotive air conditioning being more popular, higher requirements on automotive air conditioning’s comfort have been put forward, noise is an important criterion about comfort. BDC motor controlling ventilation valve’s noise is mainly caused by brush and commutator, but stepper motor doesn’t have it and stepper motor is cheap and easy-controlling. In this paper, the principle of microstepping drive technology is discussed in detail, the control circuit block diagram and the application of the stepping motor’s control system are introduced. The noise of BDC motor and stepper motor controlling ventilation valve is measured in the semi-anechoic room, BDC motor produces peak noise at the start and stop during the working of motor, stepper motor’s noise is slight and smooth-going; current waveforms have been measured in the microstepping drive, the results show microstepping drive makes current waveform more smooth-going and stepper motor’s noise is lower. So it is a tendance stepper motor will replace BDC motor to control ventilation valve, and the microstepping drive can meet different requirements for merchant’s control.

scholarly journals Methodology of software development for artificial microclimate control systems

2020 ◽  
pp. 21-31
Author(s):  
Ihor Golinko ◽  
Pavlo Gikalo
Keyword(s):  
Control System ◽  
Software Development ◽  
Control Systems ◽  
Mass Exchange ◽  
Air Conditioning ◽  
Block Diagram ◽  
Dew Point ◽  
Program Logic ◽  
Air Conditioners ◽  
Exchange Processes

The specificity of accelerated software development for microcontrollers is considered. The software development technique for a program-logic controller is presented on the example of an algorithm for controlling the industrial premises microclimate. The method of “dew point” for the control system of industrial air conditioning. The analysis of the functioning of the control system of industrial air conditioning according to the “dew point” method has been carried out and a block diagram of the control system of an artificial microclimate has been proposed. Structurally, the mathematical description of an artificial microclimate system is presented, which takes into account the nonlinearity of mass-exchange processes of air preparation. It can be used by specialists to implement computer-integrated technologies and to analyze and adjust the parameters of the control system of industrial air conditioners.

The Design of Based on AT89C52 Automotive Air Conditioning Control System

2014 ◽  
Vol 1079-1080 ◽  
pp. 1014-1017
Author(s):  
Chun Lin Wang
Keyword(s):  
Control System ◽  
Fuzzy Control ◽  
Air Conditioning ◽  
Modular Design ◽  
Design Method ◽  
Single Chip ◽  
Automotive Air Conditioning ◽  
Temperature Detection ◽  
Programming Process ◽  
Automobile Air Conditioning

This topic through to the automobile air conditioning working principle and the structure analysis of air conditioning assembly, with AT89C52 as the core of single-chip microcomputer control system is designed, and the controller hardware and part of the circuit design; To realize fuzzy control algorithm of the control system is established. Expounds how to realize the automation of automobile air conditioning system of fuzzy control; Temperature detection with high precision integrated temperature sensor MF51 implementation; Programming process, adopts the modular design method of each module respectively for programming, debugging, then connect them in accordance with the requirements of control, the debugging, analysis.

Development of an in-Car Climatic Control System

1986 ◽  
Vol 200 (5) ◽  
pp. s27-s33 ◽  
Author(s):  
R J Fowler
Keyword(s):  
Control System ◽  
Air Conditioning ◽  
Modern Technology ◽  
Automotive Application ◽  
Climate Control ◽  
Design And Development ◽  
Passenger Car ◽  
Automotive Air Conditioning ◽  
Climatic Control ◽  
Final Design

This paper describes in detail the original methods used in the design and development of a microprocessor-based climate control system for the XJ40 Jaguar car. It takes the concept of air conditioning and applies modern technology and materials to produce a unit for a new passenger car. It describes those areas of design where experience in automotive air conditioning has shown the need for improvement, and also explains the operational procedures. The theories presented can be used in any automotive application and lead through concept and development to a final design implementation.

A New Wave-Wheel Dishwasher Control System

2012 ◽  
Vol 443-444 ◽  
pp. 528-532
Author(s):  
Zhi Xiang Li ◽  
Jian Feng Yang ◽  
Qing He ◽  
Heng Wu Li
Keyword(s):  
Control System ◽  
Block Diagram ◽  
Control Circuit ◽  
New Wave ◽  
Main Program

This paper describes a family dishwasher which has been applied for China Patents, it mainly introduces the wave-wheel dishwasher control system that adopts AT89S52 to be the control core. The article gives the hardware control circuit, provides the system’s main program and the keyboard interrupt program block diagram. Through practice, the system is operating reliably, its performance is stable, and can effectively complete the tasks of washing, disinfection and drying by full-automatic.

Automotive Air-Conditioning Control System Based on the LIN Bus

2012 ◽  
Vol 614-615 ◽  
pp. 640-643
Author(s):  
Shu Sheng Xiong ◽  
Jin Xu ◽  
Fang Mei Zhong ◽  
Lian Xie ◽  
Sheng Kai Zhou
Keyword(s):  
Control System ◽  
System Design ◽  
Air Conditioning ◽  
Low Cost ◽  
Control System Design ◽  
Wiring Harness ◽  
Automotive Air Conditioning ◽  
Lin Bus ◽  
Conditioning Control

This paper describes the control system design based on the LIN bus on car air conditioning. Using the STMicroelectronics STM32 family of 32-bit ARM Cortex M3 core SCM as the controller, a LIN bus application and design in the modern automotive air conditioning control system are proposed, resulting to achieve reliable, stable, simple wiring harness, and low-cost of automotive air-conditioning control system.

Performance of Ejector Refrigeration Cycle for Automotive Air Conditioning

2016 ◽  
Vol 819 ◽  
pp. 202-206
Author(s):  
Reza Maziar ◽  
Kasni Sumeru ◽  
M.Y. Senawi ◽  
Farid Nasir Ani
Keyword(s):  
Compression Ratio ◽  
Air Conditioning ◽  
The Other ◽  
Coefficient Of Performance ◽  
Refrigeration Cycle ◽  
Entrainment Ratio ◽  
Automotive Air Conditioning ◽  
Average Improvement

In this study, two experiments were performed, one with the conventional compression refrigeration cycle (CRC) and the other with an ejector refrigeration cycle (ERC). The CRC system for automotive air conditioning was designed, fabricated and experiments were conducted. The system was then retrofitted with an ejector as the expansion device and experiments were repeated for the ERC system. Calculations of the entrainment ratio, compressor compression ratio and coefficient of performance (COP) were made for each cycle. The calculations showed that ERC has some advantages over the CRC. In this study, an average improvement of 5% in COP has been obtained for the ERC compared with the CRC.

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