Research on Intelligent Recognition and Control Device of Aviation Line Number

The article deals with the optimization of the azimuthal tracking mechanism for a photovoltaic (PV) platform, which uses linear actuators as actuation elements for both movements (diurnal and elevation). In the case of diurnal movement, where the platform’s angular field of orientation is large, a mechanism with a relatively simple structure is used for amplifying the actuator’s stroke and avoiding the risk of the system locking itself (by limiting the values of the transmission angle). The optimization study targets the mechanical device, the control device, and the bi-axial tracking program (embodied by the laws of motion in time for the platform’s diurnal and elevation angles) with the purpose of obtaining a high input of solar radiation, with a minimal energy consumption to achieve tracking. The study is carried out by using a virtual prototyping platform, which includes Computer Aided Design (CAD), Multi-Body Systems (MBS), and Design for Control (DFC) computer applications. The mechanical and control devices of the solar tracker are integrated and tested in mechatronic concept. The simulations’ results, which were performed for a set of representative days throughout the year, prove the effectiveness of the proposed design.

Download Full-text

The Application of S7-200 PLC Reactive Compensation Device in Small Substation

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.479-481.1476 ◽

2012 ◽

Vol 479-481 ◽

pp. 1476-1480

Author(s):

Qing He Chu ◽

Wen Si Cao ◽

Zhen Nie

Keyword(s):

Reactive Power ◽

Control Method ◽

High Reliability ◽

Reactive Power Compensation ◽

Control Device ◽

Reactive Compensation ◽

Reconstruction Project ◽

Compensation Device ◽

And Control

In the present rural power grid reconstruction project ,according to the problems of capacitor reactive power compensation in rural small substation. Take a small substation for instance, according to its operation and control method, set the criterion of the capacitor bank switching. A new high reliability, flexible reactive power compensation control device based on s7-200 PLC is designed. It plays an important role in improving the power supply , guaranteeing the quality of voltage, reducing the loss of rural power gid.

Download Full-text

ERRORS CONVERSION ON TRANSFER FUNCTIONS OF MEASUREMENT AND CONTROL

Journal of Automation and Information sciences ◽

10.34229/1028-0979-2021-4-9 ◽

2021 ◽

Vol 4 ◽

pp. 92-104

Author(s):

Valentin Bahatskyi ◽

◽

Aleksey Bahatskyi ◽

Keyword(s):

Transfer Functions ◽

Systematic Errors ◽

Step Function ◽

Control Device ◽

Point Of View ◽

Correct Operation ◽

Analog To Digital ◽

Analog To Digital Conversion ◽

And Control ◽

Measurement And Control

Currently, the measurement of electrical and non-electrical quantities is performed using analog-to-digital conversion channels, which consist of analog signal conditioning circuits and analog-to-digital converters (ADC) of electrical quantities into a digital code. The paper considers the case when the defining errors of the measurement and control channel are systematic errors of the ADC. The reliability of measurements is assessed by their errors, and the reliability of control - by the likelihood of correct operation of the control device. In our opinion, evaluating the reliability of such similar processes as measurement and control using different criteria seems illogical. The aim of the work is to study the effect of systematic errors of an analog-to-digital converter on the errors of parameter control depending on the type of conformity functions and the width of the control window, as well as the choice of the resolution of the ADC for various control tasks. The paper analyzes the transfer functions of measurement and control. It is shown that they are formed using step functions. It is proposed to use not a step function as a control transfer function, but other functions of conformity to the norm, for example, a linear function or functions of higher orders. In this case, the control result is assessed not according to the criterion of the probability of correct operation, but using the control error. Analyzed from the point of view of reconfiguring the errors of the line, parabolic and state parabolic functions of the norms for the development of changes windows in control. A recommendation has been given for the selection of functions for the conformity of standards and for the distribution of analog-to-digital conversions for industrial control enterprises.

Download Full-text

Wavelet transform-based line protection measurement and control device development

10.1109/itnec52019.2021.9586979 ◽

2021 ◽

Author(s):

Jianjie Song ◽

Xiangzhi Liu

Keyword(s):

Wavelet Transform ◽

Control Device ◽

Device Development ◽

And Control ◽

Measurement And Control

Download Full-text

A Study on the Optimization and Application of All Radial Truck Tire Building Process Technology

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.87-88.244 ◽

2009 ◽

Vol 87-88 ◽

pp. 244-249

Author(s):

Zhi Hua Li ◽

Shi Liang Yang ◽

Peng Xia ◽

Zhao Feng Li ◽

Yan Qing Liu ◽

...

Keyword(s):

Economic Benefit ◽

Control Device ◽

Process Technology ◽

New Device ◽

Truck Tire ◽

Building Process ◽

Technology Process ◽

And Control

By analyzing the technology process of all steel radial truck tire building machine, the author finds that there is a big potential of improvement both in stitching effect and efficiency. A new kind of stitching and control device is designed to replace the original. The new device can realize the soft stitching of tire, which reduces redundant actions and thus optimizes the process and improves the stitching efficiency. It is found in tests that the optimized process reduces the blister defectives greatly. Both productivity and quality of tires are improved significantly. It shows a big economic benefit.

Download Full-text