Control of Enviornmental Parametrs in A Greenhouse

This paper concentrates on the sustainable use of energy, water, and raw materials to increase production to meet the demand of a high population with available areas. In this work, a kind of automatically controlled greenhouse system of single-chip microcomputer based on sensors is described. This paper presents the system's hardware structure, working principle and process, and a large number of experiments on the effect of the control system. Five control parameters are chosen to increase the yield of the greenhouse, which can be used in indoor breeding and planting. Control actions are performed on the basis of the fusion of different parameters. For the actuation system, the greenhouse is controlled by relays. The proposed control framework permits sparing costs related to wear minimization and delaying the actuator's life, yet continuing promising execution comes out. Results and conclusions are derived by methods of simulation results.

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Hand Flat Knitting Machine Speech Counter System Design - Based on Single-Chip Microcomputer

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.383-390.4227 ◽

2011 ◽

Vol 383-390 ◽

pp. 4227-4234

Author(s):

Li Kang

Keyword(s):

System Design ◽

Electrical Signal ◽

Single Chip ◽

Single Chip Microcomputer ◽

Simulation Results

This paper designed a set of counter system to hand flat knitting machine based on single-chip microcomputer, for the inconvenient of counter of traditional ones. It used a shading photoelectric switch sensor converted the output of the sensor into standard electrical signal of single-chip microcomputer with converter, then dealed with single-chip microcomputer, and the count value was output by speech at the end . The hardware simulation results show that the design is practical, achieving the schemed requirements.

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The Design of the Wind-Light Complementary Street Lamp

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.490-495.3738 ◽

2012 ◽

Vol 490-495 ◽

pp. 3738-3741

Author(s):

Cheng Qun Li ◽

Xuan Zhou ◽

Xin Wang

Keyword(s):

Power Generation ◽

Wind Power ◽

Control Strategy ◽

Low Voltage ◽

Daily Life ◽

Single Chip ◽

Single Chip Microcomputer ◽

Battery Charging ◽

Street Lamp ◽

Working Principle

This article describes the street lamp of the daily life ,which brings the long lines of the low voltage transmission and the high cost of the construction and so on. In view of these problems, the Wind-light Complementary Street Lamp is designed. According to the complementary street lamp system’s composition and working principle, and the analysis of wind power, solar energy power generation and the control strategy of battery charging, thus chooses the Single-chip microcomputer as the controller of it, as to fulfills the efficient and reasonable power generation goal.

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Research on Modeling and Simulation of Electro Backup Hydraulic Actuation System

E3S Web of Conferences ◽

10.1051/e3sconf/202017901014 ◽

2020 ◽

Vol 179 ◽

pp. 01014

Author(s):

Pei Lei ◽

Hongjun Pang ◽

Sa Liu

Keyword(s):

Numerical Simulation ◽

Simulation Model ◽

System Performance ◽

Test Results ◽

Sweep Frequency ◽

Actuation System ◽

Working Principle ◽

Simulation Results ◽

System Characteristics ◽

Application Prospects

As one form in power-by-wire actuation system, the Electro backup hydraulic actuation system (EBHAs) has broad application prospects in the aviation field. In this paper, a numerical simulation model of the system performance for EBHAs is established. Based on the detailed description of its working principle, the mathematical models of EBHAs and its subsystems, as well as numerical model in the Matlab / Simulink environment are established, and a larger number of numerical simulations are carried out, which contain the normal working mode and the backup working mode. Furthermore, numerical simulation results are compared and analyzed with those results of experimental, which further verified the system simulation model established in this paper. It can be concluded from the results that the dynamic response of the system can meet the requirements of the design, no matter the normal or backup working modes. And the simulation results of the system sweep frequency are basically consistent with the test results, and the error is less than 10%. It is clear that the simulation model presented in this paper can accurately describe the system characteristics of EBHAs, which is useful to the design of EBHAs system.

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Shift Quality and Optimal Control of an Uninterrupted Shift Transmission Based on Overrunning Mechanism

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.48-49.1038 ◽

2011 ◽

Vol 48-49 ◽

pp. 1038-1043

Author(s):

Yan Wei Liu ◽

Ke Gang Zhao ◽

Xiang Dong Huang ◽

Rong Shan Yang

Keyword(s):

Genetic Algorithm ◽

Optimal Control ◽

Control Strategy ◽

Power Flow ◽

Control Parameters ◽

Shift Quality ◽

Flow Interruption ◽

Shift Control ◽

Working Principle ◽

Simulation Results

Working principle of an uninterrupted shift transmission (UST) based on overrunning mechanism and its driveline dynamic model, as well as shift control strategy are studied. For shift quality optimization, the throttle control parameters are calculated based on simplex method and genetic algorithm. Using the control strategy and optimized parameters, simulation results show that jerks and clutch slip during shift are controlled well, satisfactory shift quality is obtained without power flow interruption.

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Design and Simulation of Voltage Measurement System Based on ADC0809

Forest Chemicals Review ◽

10.17762/jfcr.vi.214 ◽

2021 ◽

pp. 314-323

Author(s):

Huiling Jin, Zhaohan Zhang

Keyword(s):

Measurement System ◽

Digital Voltmeter ◽

Measurement Range ◽

Digital Display ◽

Single Chip ◽

Voltage Measurement ◽

Single Chip Microcomputer ◽

Micro Power ◽

Working Principle ◽

Accurate Reading

The display of ordinary voltmeter is not clear enough, the measurement range is narrow and the anti-interference ability is weak. This paper studies the design and Simulation of voltage measurement system based on ADC0809. Combined with the actual production situation, using the function that ADC0809 has 8 analog inputs and can convert the analog input into digital display, this paper designs the circuit with single chip microcomputer chip AT89S51. Combined with the working principle of a / D converter and DC digital voltmeter composed of them, the voltage measurement of 0-10V is realized in this paper. The experimental results show that the measurement system has the advantages of accurate reading, wide measurement range and micro power consumption.

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