scholarly journals A Study on the Real-time Ramp Control Method in Urban Highway Network

1996 ◽  
Vol 13 ◽  
pp. 915-922 ◽  
Author(s):  
Shigeru MORICHI ◽  
Tetsuo SHIMIZU
Keyword(s):  
Real Time ◽  
Control Method ◽  
The Real ◽  
Highway Network ◽  
Ramp Control

Comparison of the Real-time Measurements for PM2.5 and Quality Control Method

2017 ◽  
Vol 33 (6) ◽  
pp. 616-625 ◽  
Author(s):  
Mikyung Park ◽  
Jin Su Park ◽  
Mira Jo ◽  
Yong Hwan Lee ◽  
Hyun Jae Kim ◽  
...  
Keyword(s):  
Quality Control ◽  
Real Time ◽  
Control Method ◽  
The Real ◽  
Quality Control Method

Design and Realization of Two-Axis Horizontal Stabilized Platform Based on Self-Correction Control Method

2012 ◽  
Vol 152-154 ◽  
pp. 1276-1280
Author(s):  
Chang Song Qi ◽  
Hong Jun Pan ◽  
Yan Le Wang
Keyword(s):  
Real Time ◽  
Control Method ◽  
The Self ◽  
Zero Drift ◽  
System Error ◽  
The Real ◽  
Stabilized Platform ◽  
Platform System ◽  
Horizontal Stabilization ◽  
The Way

To enhance the accuracy of stabilization, this paper presents a design of two-axis horizontal stabilization platform system, which is based on the combination of gyroscope and inclinometer sensors. The self-correction control method is put forward to solve the system error caused by gyroscope zero drift in traditional gyro stabilized platform, which works in the way of revising the gyroscope zero coefficient, according to the real-time attitude information feed backed by inclinometer sensors fixed in objective platform.

SCM Based High Precision Temperature Controller Design

2013 ◽  
Vol 313-314 ◽  
pp. 549-552 ◽  
Author(s):  
Zhen Hua Han ◽  
Ze Hu Feng
Keyword(s):  
Water Temperature ◽  
Real Time ◽  
Temperature Control ◽  
Control Method ◽  
Controller Design ◽  
Heating Time ◽  
Single Chip ◽  
The Real ◽  
Pid Algorithm ◽  
Analog Voltage

t is designed by adopting SUNPLUS SPCE061A version 16-bits Single Chip Microcomputer; it has realized functions as manual setting temperature, automatic temperature control, showing the real-time temperature of water. The testing mode of water temperature adopts AD590 version integrated analog temperature sensor to perceive the temperature of water in vessels and uses operational amplifier to amplify minute analog voltage signal outputted by sensor. It employs keyboard scan mode to set target temperature (40°C~90°C) and displays dynamically the real-time temperature of water with digestion. The system controls the guide circuit and closing of the heating device by using relay circuit, achieving the aim of keeping design temperature constant essentially. PID algorithm is adopted in water temperature control method. The proportion, integration and differential constant in PID algorithm are debugged with experiments in order to control the proportion of heating time and reduce the adjusting time of the system. The system boasts the advantages of high controlling precision, stability and reliability, flexible operation, strong currency.

scholarly journals A New Path Tracking Method Based on Multilayer Model Predictive Control

2019 ◽  
Vol 9 (13) ◽  
pp. 2649 ◽  
Author(s):  
Guoxing Bai ◽  
Yu Meng ◽  
Li Liu ◽  
Weidong Luo ◽  
Qing Gu ◽  
...  
Keyword(s):  
Model Predictive Control ◽  
Real Time ◽  
Predictive Control ◽  
Control Method ◽  
Control Period ◽  
Path Tracking ◽  
Positioning Systems ◽  
The Real ◽  
Time Performance ◽  
Tracking Controllers

At present, many path tracking controllers are unable to actively adjust the longitudinal velocity according to path information, such as the radius of the curve, to further improve tracking accuracy. For this problem, we propose a new path tracking framework based on model predictive control (MPC). This is a multilayer control system that includes three path tracking controllers with fixed velocities and a velocity decision controller. This new control method is named multilayer MPC. This new control method is compared to other control methods through simulation. In this paper, the maximum values of the displacement error and the heading error of multilayer MPC are 92.92% and 77.02%, respectively, smaller than those of nonlinear MPC. The real-time performance of multilayer MPC is very good, and parallel computation can further improve the real-time performance of this control method. In simulation results, the calculation time of multilayer MPC in each control period does not exceed 0.0130 s, which is much smaller than the control period. In addition, when the error of positioning systems is at the centimeter level, the performance of multilayer MPC is still good.

SPC-Based Real-Time Control Method for CNC Machining Quality

2010 ◽  
Vol 42 ◽  
pp. 263-267
Author(s):  
Xin Long Kang ◽  
Dong Man Yu ◽  
Xue Ling Yang ◽  
Di Wang
Keyword(s):  
Real Time ◽  
High Precision ◽  
Control Method ◽  
Cnc Machining ◽  
Machining Process ◽  
Real Time Control ◽  
The Real ◽  
Machining Quality ◽  
Time Control ◽  
Process System

This paper presents the methods and applications for the real-time control of CNC machining process quality in detail and clarifies the objectives of SPC for CNC machining, in order to enhance the understanding of the factors that cause instability to process system. Also, this paper adopts the methods and procedures for SPC to effectively serve the production of high-precision products for enterprises, in order to meet customers’ requirements and expectations.

Construction Schedule Real-Time Control Coupling Construction Quality in Large Scale Underground Powerhouse

2012 ◽  
Vol 256-259 ◽  
pp. 1320-1324
Author(s):  
Da Wei Tong
Keyword(s):  
Real Time ◽  
Control Method ◽  
Organization Design ◽  
Good Effect ◽  
Real Time Control ◽  
Construction Quality ◽  
Underground Powerhouse ◽  
The Real ◽  
Time Control ◽  
Construction Schedule

Underground powerhouse of hydraulic and hydroelectric engineering is a large cavern group structure. Construction process of underground powerhouse is a complex system, whose construction schedule is associated with construction quality. It is necessary to arrange construction schedule adopting construction simulation method and combining with tunnel stability analysis, which can advance the level of construction organization design. By using real-time control theory and methodology, the real-time control model of construction schedule and quality was established, considering construction procedure, geological conditions and resource limitation. The real-time control method of construction schedule and quality was presented, and the practical control procedure was studied. Good effect is obtained through the application of the real-time control method for construction schedule and quality in one real underground powerhouse.

scholarly journals Study on Application of Real-time Control Method for Controlling Position of Robots in the Given Time

2020 ◽  
Vol 3 (3) ◽  
pp. 461-471
Author(s):  
Tri Cong Phung
Keyword(s):  
Operating System ◽  
Real Time ◽  
Operating Systems ◽  
Control Method ◽  
Real Time Control ◽  
Real Time Operating System ◽  
The Real ◽  
Time Control ◽  
Robot Trajectory ◽  
The Given

Controlling accurately the position and velocity of robots in a given time is an important requirement in the industry. The open-source real-time operating systems not only have more advantages than the normal operating systems in both economy and flexibility but also meet the needs. This paper concentrates on building algorithms for controlling the robot trajectory in time using a modern real-time operating system called Linux-Xenomai. Firstly, the paper analyzes several advantages of the real-time operating system Linux-Xenomai comparing general operating systems and other real-time operating systems. Secondly, a real-time controller of a 5 degree-of-freedom (DOF) robot is built based on the real-time operating system Linux-Xenomai. After that, the paper proposes algorithms to test the ability of working in time of the robot. Finally, the real experiments are done to verify the proposed algorithms.

Chaotic Systems Based Real-Time Implementation of Visual Cryptography Using LabVIEW

2020 ◽  
Vol 37 (4) ◽  
pp. 639-645
Author(s):  
Gülden Günay Bulut ◽  
Mehmet Cem Çatalbaş ◽  
Hasan Güler
Keyword(s):  
Real Time ◽  
Secure Communication ◽  
Chaotic Systems ◽  
Control Method ◽  
Visual Cryptography ◽  
Real Time Simulation ◽  
The Real ◽  
Time Simulation ◽  
The Difference ◽  
Different Chaotic Systems

In recent years, chaotic systems have begun to take a substantial place in literature due to increasing importance of secure communication. Chaotic synchronization which has emerged as a necessity for secure communication can now be performed with many different methods. This study purposes the Master-Slave synchronization via active controller and real time simulation of five different chaotic systems such as Lorenz, Sprott, Rucklidge, Moore-Spiegel, Rössler. Master slave synchronization was performed because of synchronization realized between the same type of chaotic systems with different initial parameters and also because of the systems were expected to behave similarly as a result of synchronization. Active control method was used to amplify the difference signal between master and slave systems which have different initial parameters and to return back synchronization information to the slave system. The real time simulation and synchronization of the master and slave systems performed successfully in LabVIEW environment. Furthermore, for the real time implementation, analogue outputs of NI-DAQ card used and real time results also were observed on an oscilloscope and secure communication application using sinusoidal signal and an image encryption application achieved successfully.

Special Issue on Planning and Intelligent Behavior

1992 ◽  
Vol 4 (5) ◽  
pp. 363-363
Author(s):  
Tsutomu Hasegawa ◽  
Keyword(s):  
Motion Planning ◽  
Real Time ◽  
Control Method ◽  
Special Issue ◽  
Environment Modeling ◽  
Task Execution ◽  
The Real ◽  
Time Task ◽  
Preparation Phase ◽  
Human Operators

A required function of intelligent robots is autonomous and quick execution of tasks which are difficult for conventional machines. In addition, the intention of human operators must be transmitted precisely and easily to the robots. A variety of R&D is underway in order to realize such requirements. This R&D falls into two categories: (1) R&D on intelligent functions applied for the preparation phase of task execution and (2) that applied for the real time task execution. Motion planning based on geometrical information is a typical function for the task preparation phase which has been studied for the past ten years. Thanks to the rapid progress in computing power, the analysis of real problems has progressed and has permitted the practical application of such planning. Thus, its application to operational use is not far off. R&D on a comprehensive system including the geometric environment modeling, motion planning, and real time task execution is also underway. Intelligent functions necessary for task execution must include a task execution mechanism and a control method which guarantee reliable task execution in the presence of unpredictable errors. The solution to this problem will be realized through the implementation of skillful manipulator motions which utilize various sensors and constraints being complied in the real world, most as key technologies. This special issue has compiled reviews and articles which focus on the above mentioned issues.

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