Electronic Control Technology Research Articles

Explore the Craftsman Spirit in the Course Automobile Electronic Control Technology Under the Background of Engineering Education Professional Certification

Under the background of training-applied talents, the assessment methods of various professional courses are gradually in line with international standards. The process of engineering major training is to take craftsman spirit as the goal of talent training. This paper analyzes the matrix relationship between course objectives and assessment links under the background of engineering education professional certification, explores the connection between the setting of each course link between Automobile Electronic Control Technology and the basic content of craftsman spirit, and concretized the craftsman spirit in the course assessment setting so that the assessment objectives are directional.

Design of four-wheel steering system based on automotive electronic control technology

Abstract With the rapid development of the automobile industry, people’s requirements for automobile handling performance and driving safety are getting higher and higher. As an important automobile power system, four-wheel steering technology can improve the maneuverability, stability, and safety of vehicles by controlling the steering angles of front and rear wheels. Therefore, the design and research of the four-wheel steering system has become one of the hotspots in the field of automotive engineering. In this paper, a two-degree-of-freedom dynamics model is established, and based on the PID control strategy of joint feedback of center-of-mass lateral deflection and traverse angular velocity, the vehicle model of a four-wheeled steering vehicle is constructed by using TruckSim, and the minimum turning radius test, serpentine test, and steering wheel angle step test project are carried out. The results show that compared with the two-wheel steering vehicle, the minimum turning diameter of the four-wheel steering vehicle is reduced by 1/3, which effectively improves the maneuverability at low speeds as well as the safety and stability at high speeds, and has better transient response.

Preface: 5th International Conference on Electronic Science and Automation Control (ESAC 2024)

The 2024 5th International Conference on Electronic Science and Automation Control (ESAC 2024) was held during January 27-28, 2024 in Bangkok, Thailand. The objective of this conference was to provide a common platform to engineers, practitioners, scientists and researchers across the globe for exchanging their knowledge and views to deal with global challenges. The theme of this conference was not only the fundamental technology in the fields of electronic science, information technology, signal processing, communication technology, mechanical automation, and control technology, but also can change our society by exploring new horizons and continuous progress. This scientific event brings together more than 60 national and international researchers. The conference model was divided into three sessions, including keynote sessions, presentations and Q&A discussion. All accepted papers were strictly selected based on originality, significance, relevance, and contribution to the area after being peer-reviewed. We would like to acknowledge all of those who supported ESAC 2024. The help and contribution of each individual and institution was instrumental in the success of the conference. The ESAC Scientific Committee Bangkok, Thailand

High frequency resonance characteristics analysis of voltage‐source virtual synchronous generator and suppression strategy

AbstractThe voltage‐source virtual synchronous generator is a grid‐forming type power electronic control technology and is able to support converters that have the ability of inertial, primary frequency and voltage regulation. Firstly, the authors build the small‐signal model of the voltage‐source virtual synchronous generator and conventional converters, compare and analyse the characteristics of the high‐frequency resonance modes, the results show that the voltage‐source virtual synchronous generator has almost the same high‐frequency resonance characteristics as the conventional converter. Secondly, the different control parameters and power grid strength that affect the high‐frequency resonance characteristic are analysed with eigenvalue, and the mechanism of voltage‐source VSG that caused high‐frequency resonance is derived. The leading factor that causes high‐frequency resonance is power grid strengths, and the authors proposed introducing virtual impedance into the front‐end channel of the current inner loop control strategy to suppress resonance for the voltage‐source virtual synchronous generator based on the theoretical analysis with the small‐signal model and eigenvalue analysis. In addition, the electromagnetic transient simulation model and RT‐LAB controller‐in‐loop platform are built, and the simulation and experiment results indicate the effectiveness of the virtual impedance control strategy.

Online dynamic self-compensation of roll wear based on electronic temperature control technology

Shape control is the core link in the production of sheet steel products, and the shape mainly depends on the control of the original roll profile of the rolling rolls. The wear of the roll is inevitable in the process of strip rolling. The electronic temperature control technology of the roll profile utilizes a heat source to drive flexible adjustment of the roll profile and directionally achieves the preset, adjustment, compensation, and other roll shape control requirements of local rolls. This article establishes an electronic temperature controlled roll model and uses numerical simulation methods to research the wear compensation of electronic temperature controlled rolls. The reliability of the model is verified using an electronic temperature controlled roll experimental platform, providing an online dynamic self-compensation method for roll wear.

Combustion and Exhaust Gas Characteristics of Residual Oil Mixed with Air-Fine Mixture in Medium-Speed Marine Diesel Engine

In the marine engineering field, research has been conducted to reduce fuel consumption and emissions of harmful exhaust gases from medium- and low-speed diesel engines by improving supercharging performance, scavenging efficiency, and introducing electronic control technology, etc., and these technologies have been put to practical use. However, most of these technologies have been applied to newly constructed vessels, and oxygen-containing fuels such as water-emulsion fuel and DME fuel have not yet been put to practical use. In this study, the effects of heating high viscosity residual oil and mixing air into the fuel as fine bubbles on the combustion and exhaust characteristics of the fuel were investigated using a practical medium-speed marine diesel engine. As a result, the fuel consumption reduction effect was confirmed when fine air bubbles were mixed in heated residual oil, as is the case with them being blended into marine diesel oil. In particular, the maximum reduction was 7% at 75% load and 0.2L/min air volume, and the average reduction was 3.2% at 75% load. In terms of the exhaust gas characteristics of the fuel, no significant reduction in NOx was observed when microbubbles were mixed, but smoke values were reduced by up to 33%.

Review of Flow-Matching Technology for Hydraulic Systems

The flow-matching problem of hydraulic systems is an important factor affecting the working performance and energy saving of hydraulic systems. According to the different flow-matching mechanisms, the flow-matching technology of hydraulic systems can be divided into three categories: positive flow-control technology, negative flow-control technology, and load-sensitive control technology. In this paper, the working mechanism of flow-matching technology and the cause of energy loss are analyzed, and the research results of flow matching are introduced from two aspects of energy saving and consumption reduction and system performance improvement. In the direction of energy saving and consumption reduction, the purposes of energy saving and consumption reduction are achieved by means of multi-way valve commutation, independent inlet and outlet control, parallel replacement of shuttle valve by a cylinder piston rod controlled by pilot pressure, change of hydraulic resistance of a pressure compensating valve, improvement of the power regulation range of a hydraulic pump, and potential energy recovery. In the direction of system performance, by means of flow-forecasting system pressure change, applying flow unsaturation real-time control idea, and combining electronic control technology with load-sensitive technology, the pressure drop during transmission process and the transmission signal lag are reduced, the speed regulation interval is enlarged, fine-tuning characteristics are improved, and the response speed is increased. The research results indicate that improving the structure and the control strategy of hydraulic systems and improving the flow-matching degree of a system to achieve global matching will be a future development trend.

Roll profile preset and control based on electronic temperature control technology

Roll profile electronic temperature control technology (RPETCT) is a roll profile flexible control technology based on the principle of semiconductor thermoelectricity. It can form a specific heat flow in the roll with the help of a multi-stage electronic temperature control device, so as to realize the preset of the original roll profile of the work roll before rolling. In this paper, the finite element model of RPETCT is established, and the experimental platform of RPETCT is built for verification. Based on this, the single-sheet control ability, multi-sheets joint control ability and high-order roll profile generation ability are studied. The results show that increasing the current can improve the regulation ability of quadratic and quartic convexity under the temperature control mode of hot and cold ends. Under the two temperature control modes, the position of the quartic convexity will not change with the current. In the multi-sheets joint control mode, the bulging capacity in the middle of the roll will decrease with the increase of the distance between the sheets. In addition, this paper explores the generation ability of electronic temperature control roll profile under multi-sheets joint control and the roll profile generation rate under different working conditions, and preset the cubic and quartic roll profile curves with good fitting degree.

基于LabVIEW控制的新型旋转式包衣机的设计与试验

In view of the problems of long coating time, complicated manual operation, high multi-seed rate of coated seeds, low qualified rate, and low degree of automation of control equipment in traditional rotary coating machine, a new type of rotary coating machine was designed while using LabVIEW with a complete electric control system, which can effectively improve the speed and quality of coating. The system uses single-chip microcomputer as the lower computer, LabVIEW as the upper computer, and uses programming electronic control technology to set seed coating parameters in advance, precisely control each part and achieve precise supply. Batch supply of powder and liquid greatly improves the automation and intelligence of the operating system, improves the coating efficiency, reduces the multi-seed rate and the seedless rate, and increases the coating pass rate. In order to improve the coating quality and the supply accuracy of the coating machine, the error analysis and calibration test of the seed supply system, powder supply system and liquid supply system were carried out. After the test verification, the supply error was controlled within 2% to meet the demand for precise supply. The test results show that the pass rate of the seeds coated by the new rotary coating machine is increased by 15% to 20% compared with the seeds coated by the traditional manual coating.

Design of Maximum Power Tracking System for Photovoltaic Power Generation

Solar power generation is related to climatic conditions, and its high cost and low power generation efficiency have become the main factors restricting its development. Realizing the maximum power tracking of solar photovoltaic power generation through power electronic technology and control technology is an effective measure to increase the power generation of photovoltaic power generation systems, reduce power generation costs, improve solar energy conversion efficiency, and widely promote photovoltaic power generation technology. According to the illumination characteristics of solar cells, using a single-chip microcomputer to control the DC-DC converter and conductance increment method as the control algorithm, a solar maximum power tracking system is designed.

The Application of Disturbance-Observer-Based Control in Breath Pressure Control of Aviation Electronic Oxygen Regulator

The electronic oxygen regulator (EOR) is a new type of aviation oxygen equipment which uses electronic servo control technology to control breathing gas pressure. In this paper, the control method of EOR was studied, and the dynamic model of the aviation oxygen system was established. A disturbance-observer-based controller (DOBC) was designed by the backstepping method to achieve the goal of stable and fast breath pressure control. The sensitivity function was proposed to describe the effect of inspiratory flow on breath pressure. Combined with the frequency domain analysis of the input sensitivity function, the parameters of the DOBC were analyzed and designed. Simulation and experiment studies were carried out to examine the control performance of DOBC in respiratory resistance and positive pressurization process under the influence of noise and time delay in the discrete electronic control system, which could meet the aviation physiology requirements. The research results not only verified the rationality of the application of DOBC in the breath control of EOR, but also proved the effectiveness of the control parameters design method according to the frequency domain analysis, which provided an important design basis for the subsequent study of EOR.

P‐5.2: Virtual Touch Technology and LCM Screen Interaction System Design

With the development of science and technology, the progress of electronic control technology in the car, the human‐machine interaction control technology in the car has experienced the “physical knob button” to the physical touch control to the popular voice control technology, gesture suspension touch control technology, these have been in the car actual interaction cases. Among them, gesture suspension touch control technology is a more natural way of interaction, aiming to obtain a safer way of interaction in the driving environment. Through design verification, this paper builds an interactive design verification platform that can operate entity to simulate the interactive actions between the driver and the entertainment navigation system under the driving state.

Implementation of Voice based Touchless Lift System

In this rapid world of technology where voice begins its era of domination to replace the touch screens from smart phones to huge computer systems, bringing voice in day to day affairs becomes significant. An elevator or lift is a transport vehicle that moves people or goods from on floor to another floor in a building. Typically push buttons were used to send requests to the elevators. In recent times touch buttons are coming to use. But now voice recognition can replace the push/touch technology. Elevators being one such system used in daily life serves this purpose of making future generations hands free which also becomes a boon for the disabled as well as helps during the pandemic situation to avoid physical contact. The main objective of this project is to propose and assemble a voice operated lift/elevator control system. The proposed system acts as human-machine communication system. This research combines electronic control technology with speech recognition technology. The input to the system is human speech. Speech recognition is the method of recognizing the vocal words to take the essential actions accordingly. This device is very helpful for paralysis, short height people and physically challenged persons.

Data collection of safety accidents in sports training of athletes with Internet of Things technology

The Internet of Things (IoT) technology is an information technology developed in recent years with the development of electronic sensors, intelligence, network transmission and control technologies. This is the third revolution in the development of information technology. This article aims to study the algorithm of the Internet of Things technology, through the investigation of the hazards of athletes’ sports training, scientifically and rationally use the Internet of Things technology to collect data on safety accidents in athletes’ sports training, thereby reducing the risk of athletes’ sports training and making athletes better. In this article, the methods of literature research, analysis and condensing, questionnaire survey, theory and experiment combination, etc., investigate the safety accident data collection of the Internet of Things technology in athletes’ sports training, and provide certain theories and methods for future in-depth research practice basis. The experimental results in this article show that 82% of athletes who are surveyed under the Internet of Things technology will have partial injuries during training, reducing the risk of safety accidents in athletes’ sports training, and better enabling Chinese athletes to achieve a consistent level of competition and performance through a virtuous cycle of development.

Application Computer Detection and Control System in Automobile Electronic Control System

The overall development of our society has promoted the development of computer technology, making the various performances of modern cars more perfect. The application of computer detection and control system technology in automobile electronic control devices can realize the intelligence and automation of automobile control. Now in the information age, computer perception and control technology are widely used in various social production fields, and are also widely used in automotive electronic control systems. Due to the emergence of automotive electronic control technology, automotive performance continues to improve, automotive safety performance improves, and automotive dynamic performance becomes stronger. In the automotive electronic control device, to understand the role of the computer detection and control system more specifically, it is necessary to fully understand and master the operation principle of the computer detection and control technology and the application range of the automotive electronic control device. In order to further improve the safety performance of the vehicle, in addition to the structural improvement of the vehicle itself and the addition of safety protection devices, it is a more effective method to perceive the surrounding environment and vehicle status during driving to achieve control. This article first introduces the computer detection and control technology, and analyzes the application program in the automotive electronic control device for reference.

Design of home intelligent robot of internet of things

An aging society is the challenge we will face and deal with. It is necessary and important to explore the problems and solutions faced by an aging society. In response to this phenomenon, we designed an IoT home smart robot based on ESP8266 and STM32 to improve the quality of life of the elderly. The robot can realize functions such as environmental monitoring, fire warning, electrical power distribution, light control, auxiliary weight lifting, weather forecast, etc. Connecting to the Baidu cloud platform can realize data visualization, allowing children to remotely view the family's data and equipment conditions in the cloud, and has the function of automatically mopping the floor to reduce the burden of housework. On the basis of the mechanical structure design, combined with the current emerging Internet of Things technology and electronic control technology, mechatronics, the research and development cost is low, the function is complete, and it has strong practicability and innovation.

Research on the development status and trend of chassis control technology by wire

With the rapid development of automobile electronic industry, more and more electronic control technologies are replacing the traditional mechanical devices of automobile. Modern automobile chassis control technology is developing towards the direction of wire control. The wire control system will replace the traditional control system which mainly consists of hydraulic, pneumatic and mechanical systems, so as to realize the integration with other systems. In this paper, the development status of vehicle by wire control technology in various countries, as well as the composition, working principle and control method of vehicle by wire steering system and brake by wire system are summarized, the key technologies affecting the development of vehicle by wire control are summarized, and the application of by wire control technology in the future automotive field is prospected.

Research on Adjustable K and C Values of Analogous Active Suspension System with Automotive Chip Electronic Control Technology

Research on Adjustable K and C Values of Analogous Active Suspension System with Automotive Chip Electronic Control Technology

Respiratory Sound Classification for Remote Diagnosis

With rapid development of electronic control technology in internet technology in modern medical industry and with the development of electronic stethoscope we are one step closer to the remote diagnosis as the hardware part of it is readily available but there are limited software system that can classify stethoscope sound. Diagnosis or classification requires recognizing patterns. If the quantity of input is huge, it becomes difficult to identify these patterns. The collected data is often a non linear data, the conventional models fail to identify patterns. These challenges can be tacle with the use of latest technologies like Machine learning. Till date, many approaches were successful and now, with the use of Neural networks the loss factor is close to nil In this paper machine learning algorithm is implemented on Mel- spectrogram images in the convolutional neural network (CNN). Since considering MFCC features to classify sounds is generally accepted classification method for audio, its scale is used to find patterns in Spectrogram of samples using CNN. Sound is classified in four classes: (1) healthy (2) Containing Wheezes (3) Containing Crackles and (4) Containing both. Accuracy results of the experiments were around 63%-65%.

Research status of electronic differential control of electric vehicle driven by in-wheel motor

The electric vehicle driven by the in-wheel motor has the advantages of simple structure, high efficiency and easy control, and it has broad development prospects. Electronic differential control based on the structure of the electric vehicle chassis driven by the in-wheel motor can improve the power performance, manoeuvrability and safety of the vehicle. However, this technology also has some technical difficulties. How to overcome these difficulties is significant in this technology. This paper analyses the electronic differential control technology of an electric vehicle driven by in-wheel motor in various automobile companies and universities, and summarises the current control strategies in related fields at home and abroad. The electronic differential control technology is explained.