Automatic Track Control Method for Multi-UAV Based on Embedded System

2021 ◽  
pp. 399-408
Author(s):  
Yu-han Jie ◽  
Zong-ang Liu
Keyword(s):  
Embedded System ◽  
Control Method ◽  
Multi Uav

Variable Speed Vector Control for Induction Motor of Electric Vehicle

2014 ◽  
Vol 699 ◽  
pp. 759-764
Author(s):  
Amilia Emil Hasan ◽  
Haryani Hassan ◽  
Ismadi Bugis
Keyword(s):  
Embedded System ◽  
Vector Control ◽  
Induction Motor ◽  
Control Method ◽  
Torque Ripple ◽  
Electromagnetic Torque ◽  
Motor Speed ◽  
Speed Controller ◽  
Speed Performance ◽  
Constant Output

This paper presents the speed performance of an induction motor by using a vector control. The control scheme used is an indirect vector control for define speed command. The main focus of this research is to observe on the dynamic speed performance of the induction motor when the command speed is given to the motor. In this study, the system of indirect vector control will be built by using Matlab Simulink. In fact, the expression of exciting flux linkage and electromagnetic torque are used to create a simple embedded system which to find out the effects of flux weakening in motor while, the gain of the speed controller is 100. The result shows that the vector control method will cause immediate the motor speed response with a small electromagnetic torque ripple. Furthermore, the output mechanical torque starts to decrease when the motor speed above the base speed to maintain a constant output power operation. This paper contributes a new algorithm to analysis the system when the speed motor is higher than a base speed.

scholarly journals Towards Continuous and Ambulatory Blood Pressure Monitoring: Methods for Efficient Data Acquisition for Pulse Transit Time Estimation

Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7106
Author(s):  
Oludotun Ode ◽  
Lara Orlandic ◽  
Omer T. Inan
Keyword(s):  
Blood Pressure ◽  
Embedded System ◽  
Data Acquisition ◽  
Transit Time ◽  
Ambulatory Blood Pressure ◽  
Field Experiments ◽  
Control Method ◽  
Pulse Transit Time ◽  
Huffman Coding ◽  
Physiological Data

We developed a prototype for measuring physiological data for pulse transit time (PTT) estimation that will be used for ambulatory blood pressure (BP) monitoring. The device is comprised of an embedded system with multimodal sensors that streams high-throughput data to a custom Android application. The primary focus of this paper is on the hardware–software codesign that we developed to address the challenges associated with reliably recording data over Bluetooth on a resource-constrained platform. In particular, we developed a lossless compression algorithm that is based on optimally selective Huffman coding and Huffman prefixed coding, which yields virtually identical compression ratios to the standard algorithm, but with a 67–99% reduction in the size of the compression tables. In addition, we developed a hybrid software–hardware flow control method to eliminate microcontroller (MCU) interrupt-latency related data loss when multi-byte packets are sent from the phone to the embedded system via a Bluetooth module at baud rates exceeding 115,200 bit/s. The empirical error rate obtained with the proposed method with the baud rate set to 460,800 bit/s was identically equal to 0%. Our robust and computationally efficient physiological data acquisition system will enable field experiments that will drive the development of novel algorithms for PTT-based continuous BP monitoring.

Decentralized Control Method of Multi-UAVs Arriving at the Same Time under the Influence of Wind

2013 ◽  
Vol 336-338 ◽  
pp. 595-598
Author(s):  
Xia Chen ◽  
Chong Zhang
Keyword(s):  
Control Problem ◽  
Decentralized Control ◽  
Control Method ◽  
Starting Point ◽  
Wind Simulation ◽  
Simulation Results ◽  
Multi Uav

Decentralized control method of multi-uav arriving at the same time is a typical control problem. This paper considers the above problem and presents a decentralized control method. Considering the dynamics and uncertainty of the battlefront, and the feature of the uav, according to the different starting point, flying orientation, and distance, established the algorithm model of the velocity and direction of uav under the influence of wind, presenting a decentralize control method of multi-uav arriving at the same time under the influence of wind. Simulation results are presented to demonstrate the effectiveness, robustness, flexibility of the approach.

An intelligent static switch based on embedded system and its control method for a microgrid

2012 ◽  
Author(s):  
Meiqin Mao ◽  
Yinzheng Tao ◽  
Liuchen Chang ◽  
Yongchao Zhao ◽  
Peng Jin
Keyword(s):  
Embedded System ◽  
Control Method

High-Precision Multi-UAV Teaming for the First Outdoor Night Show in Singapore

2018 ◽  
Vol 06 (01) ◽  
pp. 39-65 ◽  
Author(s):  
Kevin Z. Y. Ang ◽  
Xiangxu Dong ◽  
Wenqi Liu ◽  
Geng Qin ◽  
Shupeng Lai ◽  
...  
Keyword(s):  
High Precision ◽  
Control Method ◽  
Formation Flight ◽  
Centralized Control ◽  
Live Performance ◽  
The Public ◽  
Bound Control ◽  
Changing Patterns ◽  
Safety Features ◽  
Multi Uav

Advancement in the development of automation in aerial robotics has created endless applications today by utilizing autonomous drones, or in other words, unmanned aerial vehicles (UAVs). Motivated by the idea of the entertainment robots, in this paper, we present a robust and safe multi-UAV formation system for the purpose of entertainment in the form of a night multi-UAV teaming light show. The performance includes a 5-minutes flight show with 16 UAVs, changing patterns with background music, and with synchronized visual lighting from each of the UAVs. The high-precision autonomous formation flight is achieved with a centralized control method with a single ground control station (GCS). The system includes offline trajectory generation, safety features such as collision avoidance and UAV states monitoring, geo-fencing for out-of-bound control and many more which will be discussed in this paper. The live performance of the multi-UAV teaming night show was successfully presented to the public in conjunction with The Future of Us Exhibitions held in January 2016, in Singapore.

Multi-UAV formation control method based on edge Laplacian consensus

2017 ◽  
Vol 47 (3) ◽  
pp. 259-265 ◽  
Author(s):  
MiaoMiao ZHANG ◽  
Chen WEI
Keyword(s):  
Formation Control ◽  
Control Method ◽  
Multi Uav

Design and Implementation of the Embedded Web Control System Based on ARM and Linux

2011 ◽  
Vol 130-134 ◽  
pp. 2961-2964
Author(s):  
Yun Liang Wang ◽  
Bo Wei Chen
Keyword(s):  
Remote Control ◽  
Embedded System ◽  
Control Method ◽  
Low Cost ◽  
Rapid Development ◽  
Remote Access ◽  
Control Technique ◽  
Effective Control ◽  
Remote Clients ◽  
Web Control

With the rapid development of networks and communications technology, the modern remote control technique has widely been used in many fields. By the Web technology, the local equipments can be connected with outside and enable monitoring the equipments in remote clients' space. At present many products adopt Embedded Chip to which an operating system is ported as a Web Server. This product has several advantages such as low power consumption, low cost, reduced size and better performance. This paper introduces a solution for embedded system access to Internet, through which we can remote access, monitor, and maintain conveniently. The solution which is based on Web and embedded technology adopts the way of human computer interface interaction to realize remote control to the equipment. The realization of this method for users provides a convenient, flexible and effective control method.

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