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Introduction to Embedded Intelligent System Lab. at NCCU,<br />

Taiwan<br />

Kao-Shing Hwang, Professor<br />

Dept. of Electrical Engineering<br />

National Chung Cheng University, Taiwan<br />

1. Preface<br />

Embedded Intelligent System Lab is a research laboratory in <strong>the</strong> Department of Electrical Engineering.<br />

The members consisting of mainly graduate students in electrical engineering, computer science <strong>and</strong><br />

engineering, optic-mechatronic engineering <strong>and</strong> undergraduates of electrical engineering belong to<br />

this lab <strong>and</strong> carry out research projects. Moreover, this lab works in cooperation with two contributing<br />

laboratories, High Speed Networking <strong>and</strong> 3D Vision in <strong>the</strong> Department <strong>and</strong> <strong>the</strong> total number of <strong>the</strong><br />

staff <strong>and</strong> students are more than 30.<br />

In this article, Cooperative Autonomous Agents Project, Museum Tour Guide, <strong>and</strong> Digital Home<br />

Center among <strong>the</strong> research <strong>the</strong>mes of EIS Lab are described.<br />

2. Cooperative Autonomous Agents with Reinforcement Learning<br />

Multiple agents learn how to cooperate with each o<strong>the</strong>r to achieve a good which needs more than one<br />

agent to perform. The <strong>the</strong>ory developed has been applied to robotics <strong>and</strong> networking congestion<br />

control.<br />

Cooperative robots<br />

Two robots connecting with a straight bar learn how to take action independently to achieve <strong>the</strong> goal<br />

where <strong>the</strong> robots is cooperating with each o<strong>the</strong>r to pass through a gate.<br />

Congestion control<br />

Cooperative agents learn networking environmental dynamics empirically without prior information<br />

to increase <strong>the</strong> utilization of available links’ capacity <strong>and</strong> decrease <strong>the</strong> ratio of packet loss.<br />

q, u<br />

CMAC<br />

Quantizer<br />

x<br />

Long-term policy evaluator<br />

Expectation<br />

Predictor<br />

(EP)<br />

Action-value<br />

Evaluator<br />

(AE)<br />

W<br />

V<br />

Critic<br />

rˆ<br />

Stochastic<br />

Action<br />

Selector<br />

(SAS)<br />

r<br />

c<br />

r for j= 1, K, n;<br />

j≠i<br />

j<br />

n<br />

K<br />

Cooperative<br />

Reward<br />

Generator<br />

Reward<br />

Evaluator<br />

r<br />

qqu , &,<br />

&<br />

reward evaluator<br />

a t<br />

Short-term rate controller


3. Museum Tour Guide Project<br />

The objective of this project is to develop a mobile device for museum touring by which <strong>the</strong> tourists<br />

can plan <strong>the</strong>ir own visit path around exhibitions. Therefore, manpower <strong>and</strong> related resources of tour<br />

guides can be saved. Besides, <strong>the</strong> tourists can get real-time <strong>and</strong> detailed information for <strong>the</strong> works <strong>the</strong>y<br />

are watching or interested in. The device is designed based on <strong>the</strong> following <strong>the</strong> technologies in<br />

networking <strong>and</strong> embedded systems.<br />

Wireless connections<br />

The mobile device has been equipped with a passive Radio Frequency Identifier (RFID) such that a<br />

visitor can retrieve <strong>the</strong> information of a work via wireless LAN by its index received by <strong>the</strong> RFID.<br />

Recently, a new version with an active RFID is being developed at <strong>the</strong> EIS lab. The h<strong>and</strong>-set device<br />

can, in addition to providing <strong>the</strong> information of <strong>the</strong> works to a visitor approaching his/her interests,<br />

pinpoint <strong>the</strong> visitor’s location <strong>and</strong> provide <strong>the</strong> information about <strong>the</strong> surroundings information<br />

actively.<br />

Open sources<br />

The development is under <strong>the</strong> open source platform <strong>and</strong> utility, such as Embedded Linux for <strong>the</strong><br />

computing power, Qt Embedded for GUI, YAFFS for Flash <strong>file</strong> systems, NFS <strong>and</strong> networking <strong>file</strong><br />

system Coda for connections between <strong>the</strong> stations.<br />

4. Digital Home Center Project<br />

This project aims at intelligent appliances integrating wireless (802.11 WLAN , Bluetooth, RFID) <strong>and</strong><br />

wired (RS-232, RS-485, Power Line Controller) networking technologies to realize an intelligent<br />

networking home system illustrated in <strong>the</strong> following figure.


Mobile control device<br />

The mobile device functions as a SIP Phone, data storage, IR remote controller, <strong>and</strong> video/audio<br />

player. In this modern age, <strong>the</strong> objective of this project is to serve human being for a better life.<br />

5. Conclusion<br />

Wide range of research <strong>and</strong> development on applications of real-time embedded systems, cooperative<br />

agents system, intelligent chip design, etc, based on machine learning <strong>the</strong>ory <strong>and</strong> SOC technology are<br />

carried out in this lab. Please refer to web site of <strong>the</strong> lab for fur<strong>the</strong>r information. URL:<br />

http://www.eis.ee.ccu.edu.tw<br />

Reference<br />

1. Y. B.Hsu, K. S. Hwang, <strong>and</strong> J. S. Wang, " An Associative of CMAC for Mobile Robot Motion Control, "Journal<br />

of Information Science <strong>and</strong> Engineering, Vol. 18, No. 2, pp. 146-161, 2002.(SCI, EI)<br />

2. K. S. Hwang <strong>and</strong> Y. B. Hsu, “A Self-Improving Fuzzy Cerebellar Model Articulation Controller with Stochastic<br />

Action Generation,” <strong>Cybernetics</strong> <strong>and</strong> <strong>Systems</strong>, An International Journalm,Vol. 33, No. 2, pp. 101-128, 2002.<br />

(SCI, EI)<br />

3. K. S. Hwang <strong>and</strong> M. J. Ju, “3D Collision-free Motion Based on Collision Index”, Journal of Intelligent &<br />

Robotic <strong>Systems</strong>, Vol. 33, pp. 45-60, 2002. (SCI, EI)<br />

4. K. S. Hwang <strong>and</strong> M. Y. Ju, ”A Propagating Interface Model Strategy for Global Trajectory Planning among<br />

Moving Obstacle,” <strong>IEEE</strong> Transactions on Industrial Electronics, Vol. 49, pp. 1313-1322, No. 6, 2002. (SCI, EI)<br />

5. M. Y. Ju, J. S. Liu <strong>and</strong> K. S. Hwang, "Real-time Velocity Alteration Strategy for Collision-free Trajectory<br />

Planning of two <strong>Man</strong>ipulators," Journal of Intelligent <strong>and</strong> Robotic System, Vol. 33, pp. 167-186, 2002. (SCI, EI)<br />

6. K. S. Hwang <strong>and</strong> M. Y. Ju, ” Speed planning for a <strong>Man</strong>euvering Motion," Journal of Intelligent <strong>and</strong> Robotic<br />

System, Vol. 33, pp. 25-44, 2002. (SCI, EI)<br />

7. K. S. Hwang, Y. B. Hsu, <strong>and</strong> C. S. Lin, “A Fuzzy CMAC Compensator for <strong>the</strong> Sliding Control,” <strong>the</strong><br />

International journal of Intelligent Automation <strong>and</strong> Soft Computing, Vol.8, No 3, pp. 273-284, 2002. (SCI)<br />

8. K. S. Hwang <strong>and</strong> M. Y. Ju, ”Speed Alteration Strategy for Multi-Joint Robots in Co-Working Environment”,


<strong>IEEE</strong> Transactions on Industrial Electronics, Vol. 50, pp. 385- 393, 2003. (SCI, EI)<br />

9. K. S. Hwang, S. W. Tan, <strong>and</strong> M. C, Tsai, “Reinforcement Learning to Adaptive Control of Nonlinear systems,”<br />

<strong>IEEE</strong> Transactions on <strong>Systems</strong>, man, <strong>and</strong> <strong>Cybernetics</strong>-Part B, Vol.33, No.3, 2003. (SCI, EI)<br />

10. Y. B. Hsu <strong>and</strong> K. S. Hwang, “An Innovative Architecture of CMAC”, IEICE Transactions on electronics, Vol.<br />

E87-C, No. 1, pp.81-93, 2004. (SCI, EI)<br />

11. K. S. Hwang, Y. J, Chen, <strong>and</strong> K. C. Hong, “Autonomous Exploring System Based on Ultrasonic Sensory<br />

Information,” Journal of Intelligent & Robotic <strong>Systems</strong>, Vol. 39, pp.307-331, 2004. (SCI, EI)<br />

12. K. S. Hwang, S. W. Tan, <strong>and</strong> C. C. Chen, ”Cooperative Strategy Based on Adaptive Q-learning for Robot<br />

Soccer <strong>Systems</strong>,” <strong>IEEE</strong> transaction on Fuzzy <strong>Systems</strong>, pp. 569-574, Vol. 12, 2004. (SCI, EI)<br />

13. M. C. Shaio, S. W. Tan, K. S. Hwang, <strong>and</strong> C. S. Wu, “Co-learning Multi-agent Congestion Control for High<br />

Speed Networks”, WSEAS Transactions on Circuits <strong>and</strong> systems, Vol. 21, pp.670-675, 2004.(SCI)<br />

14. K. S. Hwang, S. W. Tan, M. C. Shaio, <strong>and</strong> C. S. Wu, “A reinforcement Learning Approach to Congestion<br />

Control of High-Speed Multimedia Networks," <strong>Cybernetics</strong> <strong>and</strong> System, an International Journal, Vo. 36, No. 2,<br />

pp. 181-202, 2005. (SCI, EI)<br />

K. S. Hwang, S. W. Tan, M. C. Shaio, <strong>and</strong> C. S. Wu, “A Reinforcement Learning Approach to Congestion<br />

Control of High-Speed Multimedia Networks,” <strong>IEEE</strong> transaction on <strong>Systems</strong>, man, <strong>and</strong> <strong>Cybernetics</strong>-Part B,<br />

Vol.35, No. 2, pp 225-pp268, 2005. (SCI, EI)

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