Multi Control System Research Articles

Applied of Analytical Hierarchy Process and Fuzzy Time Series in Hybrid for Optimizing Smart Vertical Farming with Multi-Variety Plants

Vertical Farming is a kind of modern agricultural methods, where the structure of growing racks are arranged upwards. This method aims to optimize the use of agricultural space. There are many plants, which are suitable to be planted for vertical farming, such as Strawberry, Tomatoes, Celery, Chili, Mint, Chives, Kuchay, Spinach, and Water spinach. The problem, which is studied in this paper, is how to control the environments of vertical farming with multi-variety plants. This paper proposed a hybrid method of Analytical Hierarchy Process and Fuzzy Time Series AHP-FTS, that is, plants with similar characteristics are placed at the same block area determined by the method of Analytical Hierarchy Process (AHP). Furthermore, controlling the environments regarding the needs of appropriate growing parameters for multi-variety plants, the Fuzzy Time Series (FTS) method is used. Then, time variable for activating actuators could be adjusted as a multi-control system. The effectiveness of the proposed method was evaluated with 365 record data in 12 months. The result shows that the AHP was successful to determine the multi-criteria to determine the zone and priority of plants. The second stage is that the FTS predicts the temperature to determine time variable for activating actuators, and the third stage is the implemented AHP-FTS as a hybrid system to evaluate the vertical Farming system. The results show that the proposed system works well as hybrid system of AHP-FTS

Dynamic performance and stability characteristics of a multi pad externally adjustable fluid film bearing

ABSTRACT Due to the recent advances in the development of smart rotating machineries, there is a high demand for automated support bearings with efficient integrated control systems. Existing research studies have indicated that high-end performance can be attained from automated bearings through effective control and modification of the bearing performance parameters. In this study, an innovative journal bearing geometry with multi-control operations is presented. The four controllable bearing pads enclosed in the bearing casing have a novel feature to translate radially and undergo controlled tilt motions. The multi-control bearing system with radial and tilt pad motions will significantly influence the stability responses of the rotorsystem, which is theoretically analysed in this study. To predict the variation in film thickness for varied pad adjustments, a modified film thickness equation is incorporated in the linearised perturbed model for dynamic analysis. A notable variation in dynamic coefficients and stability parameters are observed for negative radial adjustment and tilt angles. Results indicate that negatively adjusted radial and pad tilt motion can generate improved stability margins at higher eccentricities. Data generated on stability margins at specific pad adjustments will be helpful while developing the control system for the actuation mechanism in the experimental setup.

An Active Security System Based on AR Smart Classes and Face Recognition Technology

<p>How to effectively apply AR (Augmented Reality) new technology to create better safety environment for society and enterprises is the concern of many government and enterprise leaders. This research combines AR smart glasses, multi face recognition technology and control system technology to develop a face recognition active security platform which can effectively improve the arrest of criminals and establish a safer social environment.</p> <p> </p>

Asymptotic Stability for Some Types of Nonlinear Fractional Order Differential-Algebraic Control Systems

The aim of this paper is to study the asymptotically stable solution of nonlinear single and multi fractional differential-algebraic control systems, involving feedback control inputs, by an effective approach that depends on necessary and sufficient conditions.

A Fault Level-Based System to Control Voltage and Enhance Power Factor Through an On-Load Tap Changer and Distributed Generators

The on-load tap changer is critical for voltage regulation, however, its voltage regulation philosophy is suitable for one-directional power flow power systems. Since distributed generators introduce bidirectional power flow, the conventional operation of the on-load tap changer will be highly impacted, resulting in high voltage magnitudes that exceed acceptable limits, frequent voltage magnitude fluctuations, and the increase in overall reactive power supply when distributed generators start absorbing/injecting reactive power. Therefore, an adaptive control system is proposed on this paper that alters the existing voltage regulation philosophy of the on-load tap changer and also coordinate the voltage regulation capabilities of distributed generators with those of the on-load tap changer for optimal overall voltage regulation and the reduction of reactive power that flows through the power system, enhancing the power factor thereof. The proposed control system will change the centralized, and single-variable busbar voltage monitoring technique of the conventional philosophy with a decentralized, and multi-variable strategy that controls voltage based on the average voltage of the entire distribution network. The control system will calculate the on-load tap changer and distributed generators setpoints based on the overall average network voltage, average voltage deviation from nominal voltage, generators points of connection voltage and the total reactive power that flows through the power transformer. The control system was tested on a 22kV network modelled in MATLAB SIMULINK and the results attained revealed that the proposed multi-stage control system can successfully control voltage and simultaneously improve power factor.

Multi-robot Cooperation Strategy Based on Wireless Sensor Network

To realize the design of multi-robot cooperative control based on wireless sensor networks, a large number of local control research experiments are carried out on a specific model of mobile robots. Combined with the kinematic model of mobile robot, the motion characteristics of this kind of mobile robot are grasped. On the basis of realizing the multi-target tracking and positioning of wireless sensor network, a multi mobile robot cooperative control system based on the feedback of wireless sensor network is developed, and the synchronous motion between the master and the robot is maintained through the feedback control of the network. Finally, a cooperative trajectory tracking control algorithm for mobile robot is introduced, and the principle of the controller design is mastered. A multi mobile robot cooperative trajectory tracking LQG controller is designed for mobile robot in wireless sensor network. The simulation results show that the algorithm can reach the cooperative control target.

Perancangan Multicontrol Pada Lampu Berbasis Internet Of Think (IOT)

Technological developments in the communication and information area can changes the lifestyle of the human become the digital lifestyle. Digitalization on the aspects of life can provide convenience for humans. Like the household appliances that can be controlled by a smartphone. In 2015 Nugraha build a light management system with android smartphone via bluetooth media. In addition, the lights are also can be controlled automatically by time and light (LDR). The disadvantages of this system are the lights that can not be used remotely and can not give notice to the home owner about the status “on or off” of the light. This research aims to design a multicontrol system to control the light with several media follows : bluetooth, voice, light (LDR), timer, website and SMS as notification of light status. System development method in this research using Waterfall method. The test results using bluetooth, light(LDR), voice, and timer provide a fast response with average less than 2 seconds.

A Study of the Feasibility of Autonomous Underwater Vehicles and Remotely Operated Vehicles in Black Sea

An underwater vehicle designed for industrial use in the Black Sea has to tackle two specific characteristics of it, given by its enclosed nature: the strong vertical stratification and the high content of hydrogen sulfide at greater depths. These particular environmental conditions impose also new approaches of design and technology for construction. The innovation foreseen of our study is the very concept of a universal underwater vehicle, based on modular design. Currently, unmanned underwater vehicles are controlled in two main ways, either autonomously (AUV) or by data transfer through an umbilical cable (ROV). Despite the fact AUV and ROV have many common characteristics they are used separately and are disjoint throughout their life cycle. To increase the technical performances and economic efficiency of such vehicles, we planned to design a universal carrier platform able to support different modules. Based on the common carrier sub-system, DCUV (Dual Controlled Underwater Vehicles) can be assembled as an AUV, controlled autonomously and by radio when surfaced. After its recovery and transfer of the sea data recorded during its evolution as an AUV, the specific modules (sensors and battery) are replaced with functional modules needed to change it into an ROV, which can be then remotely controlled towards the contacts of interest. The concept of providing DCUV with a common propulsion unit will be eased by designing of an innovative multi-control system that will integrate data from sensors and human operator with the propulsion motors and end effectors, based on state-of- the-art microcontrollers and their appropriate programming.

Coordinated Optimization of Multi Control System for Steam Turbine Generator Unit

A method of the coordinated optimization of multi control system for steam turbine generator unit was proposed in this paper. The primary frequency modulation performance and dynamic stability of the power system were taken into account in the method. The multi-control system to be optimized includes the excitation regulation system, the power system stabilizer (PSS), the speed control system and the boiler-turbine coordinated control system (CCS). And the taboo search (TS) algorithm was introduced as a means to obtain the optimal values of the system control parameters. The simulation result shows that the method can coordinate the primary frequency modulation performance and the dynamic stability of the system, and can effectively prevent the low frequency oscillation caused by the improper multi control system parameters setting.

On-line switched control of a six-phase induction generator in faulted mode

The operation of multiphase machines in open-phase fault conditions is always associated with undesirable ripples in torque and power, even in steady state conditions. In the literature, several methods have been proposed to reduce these oscillations considering a fixed-fault situation without taking into account the transient behavior during the modification. In this way, this paper deals with the design and implementation of a multi-control system for all possible open-phase situations of a symmetrical squirrel cage six-phase induction generator (SC6PIG) up to three opened phases in such a way to extract a qualified electrical power. For this, a general model of the SC6PIG in healthy and open-phase fault situations is employed to design the multi-control system. The control systems are re-arranged regarding the situation of the generator in different open-phase fault conditions to provide the output power as close as in healthy mode. A simple detection system is associated to define the state of the generator (number and type of opened phases in faulty operation) and to switch to the appropriate control system. Furthermore, in order to minimize the transient problems during the switching process between the different control systems, an on-line initial condition setting is imposed to the control systems during the motion. An experimental set up including a SC6PIG driven by a permanent magnet dc motor has been built to prove the capacities of the proposed on-line switched control system in different cases such as healthy, one opened phase and two opened phases situations with smooth switching.

Controlled unknown quantum operations on hybrid systems**Project supported by the National Natural Science Foundation of China (Grant Nos. 61303039 and 61201253), Chunying Fellowship, and Fundamental Research Funds for the Central Universities, China (Grant No. 2682014CX095).

Any unknown unitary operations conditioned on a control system can be deterministically performed if ancillary subspaces are available for the target systems [Zhou X Q, et al. 2011 Nat. Commun. 2 413]. In this paper, we show that previous optical schemes may be extended to general hybrid systems if unknown operations are provided by optical instruments. Moreover, a probabilistic scheme is proposed when the unknown operation may be performed on the subspaces of ancillary high-dimensional systems. Furthermore, the unknown operations conditioned on the multi-control system may be reduced to the case with a control system using additional linear circuit complexity. The new schemes may be more flexible for different systems or hybrid systems.

A Novel Design of Manipulator Arm Control System Based on STM32

This paper presents a novel design of multi dof and multifunctional manipulator arm control system. It uses 32 bit microcontroller STM32 as the core control unit, by controlling the pulse width modulation to control the manipulator arm of the steering gear. It consists of a mechanical model, the control core module, operation module, power supply module. The manipulator arm can greatly improve labor productivity, accelerate the realization of industrial production mechanization and automation, it can replace human labor in order to realize the mechanization and automation of production, and protect the personal safety in harmful environment. It has the advantages of light weight, simple operation, and low production cost etc.

Design of an Intelligent Home System Based on Linux and Qt

According to the characteristics and the application background of the intelligent home, designs the multi function control system of a family. The system uses Freescale i.MX51 processor Carle company ARM Cortex series A8 as MCU, the embedded Linux as the software development platform, and design a friendly user interface based Qt technology, realizes the ARM plate of each function module and server interaction. System with digital video intercom, messaging, appliance control, security alarm, home entertainment and other functions.

분석자동화를 위한 용액 조제 시스템 설계에 관한 연구

Petrochemical complex has been a lot of research for the development of a more mature product and analysis for mid-process and finished products is essential in these process. But these analyzes are still by hand work samples being manufactured in many parts. Moreover they are exposed to hazardous chemical and such as the analysis is being made in a very poor working conditions. In this paper, in order to solve such problems the multi control system has been developed for the automated analysis. In addition, the organic behavior of these systems and the development of a program for the automated applied, and throughout the experiment to verify the reliability of this device for the accuracy of the dosing pumps for the standard solution prepared with a range of error of was able to get a very good experimental results.

The Introduction of a Methodology to Design High Performance Motion Control via Fusion of Multi-Control Systems for a 3-Dof Electric Shaking Table to Reproduce Seismic Wave

The Introduction of a Methodology to Design High Performance Motion Control via Fusion of Multi-Control Systems for a 3-Dof Electric Shaking Table to Reproduce Seismic Wave

The Multiple AC Servomotors’ Synchronous Operation Control System Based on DSP and FPGA

The multi AC servomotor synchronous operation control system based on DSP+FPGA and a new intelligent PI controller have been designed. The intelligent PI controller can change the structure of controller and parameters dynamically according to the running status of the system, which improves the dynamic performance of the speed control system. In terms of the condition without loading, the experiments about four AC servomotors in different revolving speed have been implemented and The results of experiments show that the system can achieve the high precision control of the operation of multiple AC servomotors synchronously.

229 複数の制御系の融合による運動制御の高精度化 : 3自由度電動加振機を用いた地震波再現性の検証

229 複数の制御系の融合による運動制御の高精度化 : 3自由度電動加振機を用いた地震波再現性の検証

Construction and renovation of the independent component analysis model in dual rate system

Independent component analysis (ICA) is a simple, powerful tool for analysing multi-variant data to find abnormal on process monitoring. Traditional ICA algorithm is implemented on the consumption of unique sampling rate in the control system. However, there are a few multi rate control systems that could not apply the primitive ICA algorithm to the surveillance of industrial process. Several approaches of multivariate statistical modelling ICA are presented on dual rate system whose variables are correlated to each other in this paper. Furthermore, a strategy of renovation of ICA model on the dual rate system is also suggested with restricted number of new samples to replace the equally number of earliest one. The simulation results verify the capability of the modelling and updating ICA on dual rate system with their calculated statistics.

Dynamic Finger Movement Tracking and Voice Commands Based Smart Wheelchair

many disable persons are able to operate a joystick to control the electric wheelchair but on the other hand, many people do not have the legerdemain necessary to operate a joystick. Moreover, many of them face difficulty to avoid obstacles. The aim of this paper is to implement a multi-control system to control the movement of the wheelchair by integrating finger movement tracking system, a small vo c abulary speaker dependent based word recognition system and a group of monitoring sensors in order to avoid obstacles. Moreover, a joystick control system is also implemented in order to facilitate the patients that are able to use the joystick. The theme is accomplished by using a micro-controller with digital signal processor for isolated word recognition and sets of sensors. The results are also given at the end of the paper.

Non-stabilization Structural Mobile Robot with Duplex Modes

Two-wheeled non-stabilization structural mobile robot has the features of differential-driven and coaxial wheels. By real-time stabilizing control method, the robot has advantage of high maneuverability, which can maintain the balance on slopes and rough terrain and can pivot around the central axis of its body in narrow spaces. Mechanical design, dynamic modeling and stabilizing control method of this type of mobile robot platform are discussed. Furthermore the characteristics of its kinematics and dynamics at loaded case on different terrains are explained. The motion posture can be controlled on the basis of the motion balance mode of robot. This prototype is designed to be a light weight, compact size, low consumption platform, and it can be carried by one person. A multi modal control system is developed which includes human transport and goods transport control system modes. In human transport mode, the master controller receives the data from the data conditioning module and generates the reference for controllers while in goods transport mode the master controller receives command from the teleoperator. Through the simulation research, it is shown that the robot can be confirmed as mobile platform for transporting human and goods. The effectiveness of the robot is confirmed by experiments such as climbing slope, pivoting around, surpassing small obstacles, balance standing and human transporting.