scholarly journals Integrated Optimization of Structure and Control Parameters for the Height Control System of a Vertical Spindle Cotton Picker

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Xingzheng Chen ◽  
Congbo Li ◽  
Rui Hu ◽  
Ning Liu ◽  
Chi Zhang
Keyword(s):  
Control System ◽  
Response Time ◽  
Cotton Field ◽  
Optimization Approach ◽  
Control Parameters ◽  
Height Control ◽  
Integrated Optimization ◽  
Displacement Error ◽  
Cotton Picker ◽  
And Control

AbstractVertical picking method is a predominate method used to harvest cotton crop. However, a vertical picking method may cause spindle bending of the cotton picker if spindles collide with stones on the cotton field. Thus, how to realize a precise height control of the cotton picker is a crucial issue to be solved. The objective of this study is to design a height control system to avoid the collision. To design it, the mathematical models are established first. Then a multi-objective optimization model represented by structure parameters and control parameters is proposed to take the pressure of chamber without piston, response time and displacement error of the height control system as the optimization objectives. An integrated optimization approach that combines optimization via simulation, particle swarm optimization and simulated annealing is proposed to solve the model. Simulation and experimental test results show that the proposed integrated optimization approach can not only reduce the pressure of chamber without piston, but also decrease the response time and displacement error of the height control system.

scholarly journals Integrated optimization of structure and control parameters for the height control system of a vertical spindle cotton picker

2020 ◽  
Author(s):  
Xingzheng Chen ◽  
Congbo Li ◽  
Rui Hu ◽  
Ning Liu ◽  
Chi Zhang
Keyword(s):  
Control System ◽  
Response Time ◽  
Cotton Field ◽  
Optimization Approach ◽  
Control Parameters ◽  
Height Control ◽  
Integrated Optimization ◽  
Displacement Error ◽  
Cotton Picker ◽  
And Control

Abstract Vertical picking method is a predominate method used to harvest cotton crop. However, a vertical picking method may cause spindle bending of the cotton picker if spindles collide with stones on the cotton field. Thus, how to realize a precise height control of the cotton picker is a crucial issue to be solved. The objective of this study is to design a height control system to avoid the collision. To design it, the mathematical models are established first. Then a multi-objective optimization model represented by structure parameters and control parameters is proposed to take the pressure of chamber without piston, response time and displacement error of the height control system as the optimization objectives. An integrated optimization approach that combines optimization via simulation, particle swarm optimization and simulated annealing is proposed to solve the model. Simulation and experimental test results show that the proposed integrated optimization approach can not only reduce the pressure of chamber without piston, but also decrease the response time and displacement error of the height control system.

Cement Raw Mill Based on PCS7 and PROFIBUS Production Line Automation Control System

2014 ◽  
Vol 644-650 ◽  
pp. 722-725
Author(s):  
Fan Wu
Keyword(s):  
Control System ◽  
Production Line ◽  
Control Parameters ◽  
Feed Composition ◽  
Loop Control ◽  
Automation Control ◽  
Machine Speed ◽  
And Control ◽  
Control Layer ◽  
Layer Control

A large cement factory as an example, according to the requirements of process and control parameters of production line of raw mill, this paper researches and designs the automatic control system of cement raw mill production line based on PCS7 and PROFIBUS. The design of the whole system consists of three levels: field layer, control layer and operation layer which are connected by Ethernet and PROFIBUS implementation, and focus on the design of the feed flow includeing feed composition, feed machine speed loop control etc. Through the on-site operation, the system is stable and reliable, and has good application and promotion effect.

Build Smart Home Controls Using Wemos Microcontroller-Based Telegram App

CCIT Journal ◽  
2021 ◽  
Vol 14 (1) ◽  
pp. 1-12
Author(s):  
Freddy Artadima Silaban ◽  
Rendy Elmianto ◽  
Lukman Madriavin Silalahi
Keyword(s):  
Control System ◽  
Internet Of Things ◽  
Response Time ◽  
Open Source ◽  
Smart Home ◽  
Electronic Devices ◽  
Technological Developments ◽  
Arduino Uno ◽  
And Control

Current technological developments are very fast and progressing. One of the developments that occurs in the IoT (Internet Of Things) system. Many IOT (Internet Of Things) systems already have open source and can be suitable as needed, therefore by utilizing technological advancements, lamp controllers and house doors are made using Telegram applications. This control system can carry out home communications and control home electronic devices such as lights and house doors remotely using the Wemos and Arduino UNO microcontrollers. The Telegram application is used to send commands connected to the io.adafruit.com server. This system can provide notifications sent to the Telegram application when the house door is opened. The conclusion of the results obtained when the tool needed to communicate with the server is 12.94 seconds. For the voltage of 4 lights ± 220 V AC and for servo voltage ± 4.8 V DC. For the response time of the tool to the server ± 3 seconds, while the response time of the tool to Nextion LCD is ± 1 second

Tilt-Rotor Quadrotor Control System Design and Mobile Object Tracking

2019 ◽  
Vol 20 (10) ◽  
pp. 629-639
Author(s):  
M. Shavin ◽  
D. Pritykin
Keyword(s):  
Control System ◽  
Attitude Control ◽  
Unscented Kalman Filter ◽  
Mobile Object ◽  
Main Body ◽  
Control Parameters ◽  
Control Loop ◽  
Motor Speed ◽  
The One ◽  
And Control

We design the navigation and control system for unmanned aerial vehicle (UAV) with four tilting rotors. The considered UAV implements the so-called X-sceme, which implies the main body and four symmetrical beams, upon which rotors with propellers are mounted. It is different from the classical quadrotor by having four additional servomotors that may change the orientation of the rotors with respect t the main body, thus increasing the control parameters number. Greater number of the actuators in the system, on the one hand, opens new venues for UAVs’ applications but, on the other hand, makes the mathematical model of the UAV’s dynamics quite complicated. The latter calls for new control algorithms to be developed. We start by forming the mathematical models of the UAV’s dynamics. It is shown that the introduction of the tilting motors allows implementing independent control of the quadrotor’s position and attitude. The control loop is designed on the base on the analytical dynamics inversion. The expressions for the control parameters thus obtained are subjected to the numerical analysis, which allows taking into account technical constraints for maximal motor speed and tilt angles. Feedback in the control loop is implemented by simulation of the on-board sensors’ signals, whose characteristics correspond to those of the sensors used in the UAV’s experimental prototype design. The signals are processed with the aid of the unscented Kalman filter algorithm. The results of numerical experiments corroborate the efficiency of the developed control and navigation algorithms. The mission simulated in the numeric experiments is tracking of a pre-defined trajectory and pointing with a body-fixed camera at a mobile object, which, in turn, moves along a programmed trajectory.The results of the numeric experiments show that the UAV is capable of performing complex maneuvers with independent position and attitude control.

scholarly journals MONITORING AND CONTROL SYSTEM WITH A CLIENT-SERVER MODEL BASED ON INTERNET OF THINGS (IOT)

2021 ◽  
Vol 22 (1) ◽  
pp. 93-102
Author(s):  
FX Arinto Setyawan ◽  
Sri Ratna Sulistiyanti ◽  
Sri Purwiyanti ◽  
Helmy Fitriawan ◽  
Adam Rabbani Adnan
Keyword(s):  
Control System ◽  
Response Time ◽  
Home Monitoring ◽  
Communication Model ◽  
Human Beings ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
Client Server ◽  
Time Average ◽  
And Control

Safety and comfort are needs for all human beings. Meanwhile, the crime rate is increasing. Therefore, a remote monitoring and control system is needed. This research offers a home monitoring and control system with a client-server model using NodeMCUESP-12E. The equipment design can be used to monitor the condition of the house through sensors installed in each room. Home monitoring includes motion detection using a motion sensor, detection of the condition of the house door using a magnetic sensor, and remote door locking using a solenoid. The system can be operated offline or online using an Android smart phone. The communication model used for client-server over the transport layer protocol is User Datagram Protocol (UDP), so the server can communicate simultaneously on two clients. The fastest average response time is 0.653 seconds. The communication model between a server and a cloud uses Transmission Control Protocol (TCP) so that the data sent or received by the server through the internet is more reliable. The cloud used is Firebase which has real-time database facilities and historical data. When online, sensor response time average is the fastest on an android at 3.898 seconds, response time control is the fastest average on a client at 7.157 seconds and the control response time average is the fastest on an android at 9.495 seconds. ABSTRAK: Keselamatan dan keselesaan merupakan keperluan penting untuk manusia. Sementara itu kadar jenayah pula kian meningkat. Oleh itu, kita perlu pemantauan jarak jauh dan sistem kawalan. Kajian ini merupakan sistem kawalan dan pemantauan rumah dengan model pelanggan-pelayan menggunakan NodeMCUESP-12E. Peralatan yang dibina boleh digunakan bagi mengawasi keadaan rumah melalui sensor yang dipasang dalam setiap bilik. Pemantauan rumah adalah termasuk pengesan gerakan menggunakan sensor gerakan, pengesan keadaan pintu rumah menggunakan sensor magnet, dan pengunci pintu jarak jauh menggunakan solenoid. Sistem ini boleh digunakan secara luar atau dalam talian menggunakan telefon pintar Android. Model komunikasi yang digunakan pada pelanggan-pelayan menggunakan protokol lapisan pengangkutan adalah Protokol Datagram Pengguna (UDP), oleh itu pelayan dapat berkomunikasi secara terus dengan dua pelanggan pada purata masa respon terlaju sebanyak 0.653 saat. Model komunikasi antara pelayan dan awan adalah menggunakan Protokol Kawalan Penghantaran (TCP), dengan harapan data dapat dihantar dan diterima oleh pelayan melalui internet dengan lebih kebolehpercayaan. Awan yang digunakan adalah Firebase yang mempunyai kelengkapan pengkalan data waktu nyata dan data sejarah. Melalui keadaan dalam talian, purata masa sensor bertindak balas adalah paling laju pada Android sebanyak 3.898 saat, purata kelajuan kawalan masa bertindak balas pada pelanggan adalah 7.157 saat dan purata masa kawalan tindak balas adalah paling laju pada Android sebanyak 9.495 saat.

scholarly journals A Tillage Depth Monitoring and Control System for the Independent Adjustment of Each Subsoiling Shovel

Actuators ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 250
Author(s):  
Shangyi Lou ◽  
Jin He ◽  
Caiyun Lu ◽  
Peng Liu ◽  
Hui Li ◽  
...  
Keyword(s):  
Control System ◽  
Response Time ◽  
Transient Response ◽  
Field Experiments ◽  
System Control ◽  
Monitoring And Control ◽  
Monitoring And Control System ◽  
The Mean ◽  
Tillage Depth ◽  
And Control

Subsoiling can break the compacted hardpan without turning or mixing soil layers. It has significant advantages in improving soil structure, promoting rainwater infiltration, and increasing air permeability of soil. The soil compacted hardpan will not be completely broken and more power consumption will be generated unless the desired tillage depth is obtained. However, due to uneven surface between and within each row of subsoiling shovel in the field, the existing adjustment methods, adjusting via the lifting device of the whole machine or a group of tillage components, cannot ensure each subsoiling shovel avoiding undesired tillage depth. Therefore, a tillage depth monitoring and control system for the independent adjustment of each subsoiling shovel was developed, and the methods of detecting, adjusting, displaying, and recording tillage depth were described. Field experiments were conducted to evaluate detecting accuracy, stability of tillage depth, transient response time, and advantages. The results showed that the value obtained by sensor differed from manual measurement at the speed of 3 km/h, 4 km/h, and 5 km/h averagely by 8.28%. The mean value of the coefficient of the tillage depth stability at three speeds were all greater than 94%. The mean transient response time was 0.6 s. The standard deviation of tillage depth obtained under system control was 38.31, which was less than the 51.52 obtained by only adjusting on the three-point suspension. The subsoiler equipped with this system was capable of obtaining a desired tillage depth of each subsoiling shovel in every second.

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