Automatic Adjustment System Research Articles

A new system for automatic analysis and quality adjustment in audiovisual subtitled‐based contents by means of genetic algorithms

AbstractIn Spain, the subtitling service on television for the deaf has been improving in quantity since the General Law on Audiovisual Communication was enacted in 2010. This law establishes a series of quality standards that must be followed in the subtitling process. One of the most relevant aspects of subtitle quality is the speed at which they are shown on the screen, due to the fact that a too high speed (less time on screen) will make them difficult to read and the information hard to understand. In order to determine whether the speed at which the subtitles are being shown is adequate, first, it is necessary to process all the information associated with the broadcast of the digital TV channels including data from different sources. In this research, the authors have worked with the data obtained within the time period between July 2012 and December 2017, that is, with more than 950 million records. This article presents a framework for integration and processing of heterogeneous information associated with the subtitling of audiovisual content from different sources. Moreover, the framework will provide an automatic adjustment of subtitles in broadcasting regarding quality indicators by means of a genetic algorithm approach. The results show that the system is able to estimate the best relationship between the time and size of the subtitles and maintaining the quality levels established for this research. These results have been validated by experts and users of this domain.

On developing an automatic control system for the dump conveyor of a wheel excavator

One of the main ways to increase the rotary excavator productivity is to automate excavator operation. The article presents an automatic speed adjustment system for the stacking conveyor belt of a trench rotary excavator. It is shown that the automated control system will allow taking into account the rotor actual rotation speed and the bucket fill factor, processing data and solving tasks of the excavator operation automatic control in excavation mode. The represented automated control system will ensure the conveyor operation with the necessary, but not maximum speed. Therefore, the conveyor will not work “in vain”, that, in its turn, will reduce operating costs including energy.

상체 근력 운동을 위한 단계별 근력 부하 조정 시스템

본 연구에서는 다수의 스프링을 사용하여 운동 부하를 자동으로 부여하는 운동기구에 대한 설계와 제작을 진행하였다. 등가 스프링의 강성을 조절하기 위해서 스프링의 개수를 자동으로 선택할 수 있는 기구를 설계하였으며, PID 제어를 이용하여 별도의 외부 센서 없이 정확한 위치에 훅(hook)이 걸릴 수 있도록 하였다. 사용자가 당기는 길이로 스프링의 변형량을 측정하고, 선택된 스프링의 개수에 의한 등가 스프링 강성을 계산하여 사용자의 근력을 산출할 수 있도록 하였다.

Research and Implementation of the Roll Position Automatic Adjustment System Based on Roller Parameters Prediction

The traditional roll position adjustment system on the one-time forming of cold-formed steel unit is not only inefficient, but also has poor stability. Moreover, the error of the roll parameters measured by the manual experience and the caliper measured is very large, which leads to low yield of product and high cost labor. In order to solve the above problems, this paper designs a set of roll position automatic adjustment system that can predict roll parameters. The automatic control technology, sensor technology and industrial communication technology are applied to this system and the high performance PLC controller is used as control core. Three-phase asynchronous motors are controlled by PLC(S7-1500) to drive gear connected with reducer and coupling so as to drive rolls connected with the upper and lower horizontal axis to move. In this paper, the PCA-BP algorithm is used to train the roller parameters prediction model so that the roller parameters of a given model of square-tube are predicted. Then the parameters of the new type of square-tube roll distribution are predicted, and the simulation results are compared with the actual production results while the automatic adjustment was completed. The field application shows that the prediction of square-tube roller parameters based on PCA-BP algorithm is more effective than manual measurement, and the whole system is simple in operation, stable in operation and the time used is less, the maximum measuring error of the roll displacement of the system is only [Formula: see text][Formula: see text]mm. The system can predict the corresponding roller parameters according to the specifications of the new model square-tube, and automatically complete the adjustment. The system not only improves the adjustment speed and accuracy, but also avoids the waste of manpower so that business productivity has been greatly improved.

Laser confocal automatic adjustment system for attitude of spherical component

Laser confocal automatic adjustment system for attitude of spherical component

Automatic parameter adjustment system for packing materials and control of flow modes in mass exchange columns

Abstract The paper provides a new automatic adjustment system for flow modes in packing columns. The system allows automatic adjustment of the operating modes of packing mass exchange devices for rectification, extraction, absorption and gas and liquid catalytic reactions. The authors have described in detail the scheme of the developed system and the modes of automatic adjustment of the main operating parameters. The authors have also described the main features and advantages of using metal shavings, that is wastes of metalworking machines, as packing materials that meet all the requirements of running mass exchange processes and are amenable to automatic regulation.

Pengatur Suhu dan Kelembaban Kumbung Jamur Otomatis

Temperature and humidity have an important role in the cultivation of oyster mushrooms to obtain optimal growth of oyster mushrooms. The optimum temperature required ranges from 24 ° C - 27 ° C and 80% - 90% humidity. The watering of mushroom kumbung should be done regularly, in order to maintain the temperature and humidity of the surrounding air, then conducted research that aims to create a tool that can regulate the temperature and humidity kumbung mushrooms automatically to facilitate farmers keep the temperature and humidity stability continuously. This automatic adjustment system uses DHT-11 sensors as air and humidity and arduino uno gauges as tool controls. Tests conducted for 7 days with data collection in the morning at 06:00 AM, noon at 12:00 PM and afternoon at 4:00 PM. The test results prove that this system of temperature and humidity regulator can keep the stability of room temperature and humidity with an average 25°C of room temperature and 60% of humidity with set point temperature at 27°C and 55% of humidity.

Laser differential confocal measurement of the outer surface profile of a laser inertial confinement fusion capsule

A new laser differential confocal measurement method with a high axial resolution and insensitivity to surface inclination is proposed for high-precision measurement of the outer surface profile of a laser inertial confinement fusion (ICF) capsule. This method uses an eccentricity automatic adjustment system to rapidly adjust the capsule’s centre to be aligned with the centreline of the rotary shaft. The capsule is then rotated by a high-precision rotation system, and the laser differential confocal measurement system (LDCS) radially measures the geometrical coordinates of each sampling point position in order to obtain the outer surface profile data of the ICF capsule. The proposed method achieves high-precision, non-contact, automatic, and rapid measurement of the outer surface profile of an ICF capsule. Theoretical analyses and preliminary experiments indicate that for the proposed method the measurement repeatability for the outer surface profile of an ICF capsule can reach 20 nm.

Automatic adjustment system for the multipass eight-channel power module of a megajoule laser

This paper presents the optical layout and composition of a system for automatically adjusting the multipass power module of a next-generation laser apparatus. An adjustment technique based on near-field and far-field markers is described. A control program under the Astra Linux operating system is described for the automatic-adjustment system.

Automated tube voltage selection in pediatric non-contrast chest CT.

BackgroundModern CT scanners provide automatic dose adjustment systems, which are promising options for reducing radiation dose in pediatric CT scans. Their impact on patient dose, however, has not been investigated sufficiently thus far.ObjectiveTo evaluate automated tube voltage selection (ATVS) in combination with automated tube current modulation (ATCM) in non-contrast pediatric chest CT, with regard to the diagnostic image quality.Materials and methodsThere were 160 non-contrast pediatric chest CT scans (8.7±5.4 years) analyzed retrospectively without and with ATVS. Correlations of volume CT Dose Index (CTDIvol) and effective diameter, with and without ATVS, were compared using Fisher’s z-transformation. Image quality was assessed by mean signal-difference-to-noise ratios (SDNR) in the aorta and in the left main bronchus using the independent samples t-test. Two pediatric radiologists and a general radiologist rated overall subjective Image quality. Readers’ agreement was assessed using weighted kappa coefficients. A p value <0.05 was considered significant.ResultsCTDIvol correlation with the effective diameter was r = 0.62 without and r = 0.80 with ATVS (CI: -0.04 to -0.60; p = 0.025). Mean SDNR was 10.88 without and 10.03 with ATVS (p = 0.0089). Readers’ agreement improved with ATVS (weighted kappa between pediatric radiologists from 0.1 (0.03–0.16) to 0.27 (0.09–0.45) with ATVS; between general and each pediatric radiologist from 0.1 (0.06–0.14) to 0.12 (0.05–0.20), and from 0.22 (0.11–0.34) to 0.36 (0.24–0.49)).ConclusionATVS, combined with ATCM, results in a radiation dose reduction for pediatric non-contrast chest CT without a loss of diagnostic image quality and prevents errors in manual tube voltage setting, and thus protecting larger children against an unnecessarily high radiation exposure.

Research and Implementation of the Roll Position Automatic Adjustment System on the One-Time Forming of Cold-Formed Steel Unit

In order to solve the existing problems of inefficiency, instability, inaccuracy and low degree of automation, the roll position automatic adjustment system is designed for the one-time forming of cold-formed steel unit. The automatic control technology, sensor technology, communication technology and human–machine interface (HMI) configuration technology are applied to this system and the high-performance PLC controller is used as control core. Triple-phase asynchronous motors are controlled by PLC (S7-1500) to drive the gear connected with reducer and coupling so as to drive the rolls connected with the upper and lower horizontal axes to move. The osiswitch is used to calibrate zero position and the closed-loop control system is constructed by analyzing and feedbacking the signal of the sensor. In this way the system can improve the roll position adjustment accuracy. The practical applications show that the whole system is simple, stable and efficient and the maximum detection error of roller displacement is only [Formula: see text]2[Formula: see text]mm. The system can automatically call the corresponding roll position data according to the specification of the steel pipe. The system not only improves the adjustment speed and accuracy, but also avoids the waste of manpower so that the enterprise production efficiency can be greatly improved. Meanwhile, in order to carry out efficient management of the unit, the unit’s health management system was used to analyze and monitor the status of the unit in real-time.

Pacing failure caused by automatic pacing threshold adjustment system

Ventricular capture management is an automatic pacing threshold adjustment algorithm that automatically measures pacing threshold through detection of the evoked response after a pacing stimulus. Although it is principally designed to save device battery under the maintenance of the patient׳s safety, we experienced a rare case with serious pacing failure due to a weakness of this algorithm. This pacing failure might be explained by a large variation in the ventricular pacing threshold depending on the atrioventricular interval and daily variation of pacing threshold and concomitant steroid use in this patient.

Development of an HCN dual laser for the interferometer on EAST**Contributed paper, published as part of the Proceedings of the 3rd Domestic Electromagnetic Plasma Diagnostics Workshop, September 2016, Hefei, China.

A two-color continuous wave (CW) discharge-pumped far-infrared (FIR) hydrogen cyanide (HCN) laser was developed as the source of an interferometer for measuring the line-averaged electron density in the Experimental Advanced Superconducting Tokamak (EAST). The output power of the dual laser system was about 120 mW from each laser on the 337 μm (0.89 THz) line. The polarization of each output beam was fixed using thin tungsten filaments and oscillated in the EH11 mode. Different megahertz intermediate frequencies (IF) and a slight frequency offset (∼1 MHz) were generated in this system to replace the traditional rotating grating with ∼10 kHz IF, and this can improve the time resolution of the interferometer significantly. The experimental result showed that different IF signals were obtained by successfully adjusting the cavity length. In particular, the beat frequency was captured at ∼1.3 MHz by a Schottky mixer when the length of the resonant cavities was changed by 5 μm by an automatic adjustment system. In order to study the character of IF, a long time record of the IF signal was carried out, and the IF signal could be stabilized for a few minutes in the range of 2 MHz to 3 MHz. A real-time IF stability control system was initially designed for long pulse discharge experiments on the EAST. The ∼MHz frequency response and good phase sensitivity of the dual laser HCN interferometer will allow the system to track fast density profiles and resolve fast MHD events, such as tearing/neoclassical tearing, disruptions, etc.

Color Scheme Adaptation to Enhance User Experience on Smartphone Displays Leveraging Ambient Light

With the rapid development of information technology, mobile devices have exhibited increasing popularity in recent years. To support the anytime-anywhere service model of mobile devices, one important problem related to the screen display arises when using these devices (e.g., smartphone and tablet) under various lighting conditions. On one hand, it is hard for users to see the display clearly under strong lighting conditions (e.g., sunlight). On the other hand, the screen appears dazzling under weak lighting conditions. This problem related to the mobile device display can significantly degrade user experience and undermine the successful deployment of the anytime-anywhere mobile service model. Existing solutions mainly focus on the automatic adjustment of brightness level under different light conditions. We show that merely utilizing brightness level to solve the display problem is not enough to maintain the user experience under both strong and weak lighting scenarios through experimenting with over 200 volunteers. In this work, we take a different approach by investigating automatic color scheme adjustment to improve user experience. We find that Readability, Comfort level, and Similarity are major factors that contribute to user experience. In recognizing these problems, we propose a system, ColorVert, which utilizes the DKL color space to adaptively transform color schemes by sensing ambient light to improve user experience under various lighting scenarios. Our experimental evaluation with over 200 precipitants and various mobile devices demonstrates that ColorVert is more effective in both maintaining as well as improving user experience compared with the existing automatic brightness adjustment system.

A New Design Method of Automatic Adjustment System for High-low Beams of Intelligent Vehicle

To solve the traffic safety problems of Intelligent Transportation Systems (ITS) and improve the operational efficiency of road transportation, a new automatic adjustment system for high-low beams of intelligent vehicle is designed. Automatic adjustment systems for vehicle high-low beams can automatically adjust the light state of vehicle headlights, but at present most of them are only limited to vehicle’s meeting or overtaking situation, rarely involved in other driving states. Based on analyzing the changes of operating parameters of vehicles when driving in the curve, the new automatic adjustment system for high-low beams is especially designed for this state. It contains three kinds of sensors and ECU control technology. Through presetting computer control algorithm, the new system will automatically adjust high-low beams when vehicle is driving in or out of the curve. It can improve driver's vision, reduce driving fatigue, provide a new field for the application domain of automatic adjustment systems for intelligent vehicle high-low beams and have a great development prospect for ITS or AVCS.

GPS-based highway toll collection system: Novel design and operation

AbstractThe requirement for vehicles to halt for toll fee payment results in traffic congestion and reduces fuel efficiency. In this paper, hardware and software designs were involved to develop a GPS-based highway toll collection system. The system utilised the Raspberry Pi 2 as the microcontroller. Additional electronic modules such as GPS module, LCD module, speaker, wireless Wi-Fi router modem and wireless Wi-Fi adapter were included to perform specific tasks. The system utilised GPS coordinates to track vehicle and toll fees were incurred at predefined points. The travel summary was recorded in the online database. Furthermore, an automatic delay time adjustment system was studied and was implemented to reduce the power consumption of the system without compromising the accuracy. A personal cloud server was configured to allow online access of travel logs. The developed system promises motorists a smooth travel journey and eliminates the construction of expensive toll booths.

АДАПТИВНИЙ ПРОПОРЦІЙНО-ІНТЕГРАЛЬНО-ДИФЕРЕНЦІАЛЬНИЙ РЕГУЛЯТОР У РОБОТИЗОВАНИХ СИСТЕМАХ

The purpose of the submitted master's thesis is the implementation of a system for automatic tuning of the PID controller coefficients, which is used in robotic systems. The main task of the work is to determine the factors influencing the stability of the system, which are controlled by the PID controller and to solve the issue of adjusting the coefficients when these factors change. Analysis and construction of a system for automatic adjustment of coefficients. Finding ways to get data from feedback and regulate this data. Creation of a real prototype of a control system based on a microcontroller and implementation of software for the operation of a system capable of autonomously adjusting PID coefficients in real time. In the work, the influence of external and internal factors on the stability of the system was investigated, the necessary feedback was chosen to receive data to the microcontroller, and the software for the operation of the system was created. This work can be used in industry and prototyping for fast and high-quality adjustment of the PID controller coefficients.

Design Research of the Electric Gun Mounting Bracket Used for Parking Pre-tightening Force Adjusting Nut

For the problem how to fix constant torque electric gun, in parking brake equipped with automatic adjustment system, we propose two solutions, and select a more suitable solution by theoretical analysis. Based on the structure of the handbrake and the electric gun, using 3D modeling software to design the selected solution. At same time, use the finite element analysis to analyze the stress and strain of the leaf spring status. Finally, the solution will be converted to real, and verified that liquid rubber can effectively reduce the spring leaf rivals on the handbrake spring leaf structure by test method, and ultimately proved the feasibility of the design.

2D spatial profile measurements of potential fluctuation with heavy ion beam probe on the Large Helical Device.

Two-dimensional spatial profiles of potential fluctuation were measured with the heavy ion beam probe (HIBP) in the Large Helical Device (LHD). For 2D spatial profile measurements, the probe beam energy has to be changed, which requires the adjustment of many deflectors in the beam transport line to optimize the beam trajectory, since the transport line of LHD-HIBP system is long. The automatic beam adjustment system was developed, which allows us to adjust the beam trajectory easily. By analyzing coherence between potential fluctuation and magnetic probe signal, the noise level of the mode power spectrum of the potential fluctuation can be reduced. By using this method, the 2D spatial profile of potential fluctuation profile was successfully obtained.

Development of the automatic adjustment system for the appropriate radiopharmaceutical dose

Introduction In nuclear medicine examination, it is required to adjust appropriately radiopharmaceutical dose for patient by the patient’s age and physique. Purpose In this study, the system for adjusting an appropriate radiopharmaceutical dose automatically was developed. Materials and methods This system of the developed can calculate appropriate radiopharmaceutical dose based on some guideline of scientific society, and adjust the quantity of solution in syringe by inputting some patient information and the substance of examination. The text data of the information about adjustment are saved on PC after adjusted the quantity of solution. Further the label for pasting on syringe is outputted with a printer. Also the difference between the quantity of solution in syringe filled at dispenser and the calculated volume has been investigated by using various type of radiopharmaceuticals. Results This system consisted of a barcode reader, a PC, a dispenser and a label printer. The size of dispenser is 130 mm × 380 mm × 285 mm, and the weight is 4730 g. The difference between the quantity of solution in syringe filled at dispenser and the calculated volume with PC was 2% or less, and it was shown that it is satisfactory in the practical needs. Conclusion This system adjusts automatically an appropriate radiopharmaceutical dose just inputting some patient information and the substance of examination. This system is efficient of a quality assurance of nuclear medicine examinations. Disclosure We have no disclosure and financial support.