The topic of how cooperation emerges and develops in the real world has been intensively studied. Many mechanisms and models have been proposed to explain this complex phenomenon with the idealized assumption that all...
LiDAR-based 3D detectors perform well on particular autonomous driving benchmarks, but may poorly generalize to other domains. Existing 3D domain adaptive detection methods usually require annotation-related statistic...
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In this article, we study the formation problem for a group of mobile agents in a plane, in which the agents are required to maintain a distribution pattern, as well as to rotate around or remain static relative to a ...
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Service robots are playing more and more roles for indoor environments and for a service robot with limited equipment and capacity, it is an effective way to empower itself so as to better serve people or function via...
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Service robots are playing more and more roles for indoor environments and for a service robot with limited equipment and capacity, it is an effective way to empower itself so as to better serve people or function via seeking help from surrounding resources as ambient intelligence or people. With open source program Robot Operating System (ROS) well developed for localization, navigation, communication, even some service operation tasks and as an accepted design approach, a new system mechanism, design and implementation are presented in this paper which employs ROS middleware for system enhancement and extension, instead of conventional complex distributed computing or WEB Service nodes. A networked robot works semi-autonomously under supervisory control of people through an Internet Browser while served by ambient intelligent assistant nodes to empower its functions. Smart device nodes and supervisory system of the robot is designed with ROS middleware and typical distributed resources node for video/audio under non-ROS system as with Android for ROSBridge communication are given in detail. Lastly, typical application scenarios and experiments are given for validation of the experimental system's design and feasibility.
In modern power system,renewable energy(e.g.,wind and solar energy) is an essential part of the smart *** problem of the fluctuate output of renewable energy generation and cooperation with traditional energy genera...
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ISBN:
(纸本)9781538629185
In modern power system,renewable energy(e.g.,wind and solar energy) is an essential part of the smart *** problem of the fluctuate output of renewable energy generation and cooperation with traditional energy generation present significant challenges to the automatic generation control(AGC) in future smart *** paper presents a distributed model of AGC that contains thermal,hydro and wind-solar power *** on this model,we formulate a distributed model predictive control(DMPC) problem and propose a quadratic programming(QP) based approach to solve *** performance of the proposed method is demonstrated through simulations.
To deal with the position and attitude tracking control problem of a quadrotor unmanned aerial vehicle(UAV),the proportional-derivative(PD) and integral sliding mode techniques are adapted to design a double-loop cont...
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ISBN:
(纸本)9781509046584
To deal with the position and attitude tracking control problem of a quadrotor unmanned aerial vehicle(UAV),the proportional-derivative(PD) and integral sliding mode techniques are adapted to design a double-loop controller in this ***,the system model of quadrotor is established according to the Lagrange ***,a PD control method is put forward in the outer-loop to achieve the position ***,an integral sliding mode control method is adapted in the inner-loop to ensure the quadrotor track the desired attitude angles in the presence of external ***,a double-loop controller is ***,simulation results are presented to verify the effectiveness and robustness of the proposed control laws.
The face detection algorithm based on multi-channel map discriminant projection Haar feature is proposed in this paper. The multi-channel map is extracted from the face image, which can reduce the influence of the ill...
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Hydraulic elevators are widely used in the world because of their simple structure, smooth running and comfortable ride, This paper presents a conventional PID controller and a self-tuning Fuzzy PID controller to cont...
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ISBN:
(纸本)9781538629024
Hydraulic elevators are widely used in the world because of their simple structure, smooth running and comfortable ride, This paper presents a conventional PID controller and a self-tuning Fuzzy PID controller to control speed of elevator, their performance are compared by analyzing their step response curves, track-feature, error curves as well as ideal speed response curves. Simulation results show that Fuzzy PID controller has better control performance than the conventional PID controller. The modeling, control and simulation of the elevator system have been done using the software package MATlab.SIMULINK.
This paper presents a simple and robust feature descriptor method, namely local dominant orientation feature histogram (LDOFH). In this method, the discriminant histogram contains dominant orientation, and the corresp...
This paper presents a simple and robust feature descriptor method, namely local dominant orientation feature histogram (LDOFH). In this method, the discriminant histogram contains dominant orientation, and the corresponding relative energy value is obtained by calculating the direction and the amplitude of the gradient of each pixel over a local patch. The LM-NNDA (Yang et al. in Pattern Recognit 44:1387–1402, 2011) method based on the principal component analysis (PCA) method is finally employed to reduce the redundancy information and get the low-dimensional and discriminative features. We apply this descriptor on AR, IMM face image databases. Experimental results demonstrate the effectiveness of the proposed LDOFH method.
The IEEE 802.15.4 standard is the basis of many protocol suites such as ZigBee, WirelessHART and MiWi popular in Internet of Things systems, wireless sensor networks, and industrial wireless networks. In practice, due...
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ISBN:
(纸本)9781538629024
The IEEE 802.15.4 standard is the basis of many protocol suites such as ZigBee, WirelessHART and MiWi popular in Internet of Things systems, wireless sensor networks, and industrial wireless networks. In practice, due to its working bands are free to access, IEEE 802.15.4 based networks often suffer from interference which will deteriorate the network performance. In this paper, we model the interference as an on-off process and propose a new analytical model for IEEE 802.15.4 based networks which quantitatively characterizes how such interference affects the network throughput. We also conduct extensive simulations which demonstrate the accuracy of the model.
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