Kemao Peng, Ben M Chen, Guoyang Cheng, Tong H Lee
Friction and nonlinearity compensation in hard disk drive servo systems using robust composite nonlinear feedback control * * Paper presented at the Asian Control Conference,
On Blocking Zeros and Strong Stabilizabi!ity of Linear Multivariable Systems*t (2009)
Key Words--Linear multivariable systems; system theory; blocking zeros; strong stabilizability. Al~lract--Motivated by a crucial role blocking zeros play in deciphering the strong stabilizability of...
LOOP TRANSFER RECOVERY DESIGN VIA NEW OBSERVER- BASED AND CSS ARCHITECTURE-BASED CONTROLLERS (2009)
Two new controller structures, namely the continuous-time current-type observer and current-type CSS (Chen-Saberi-Sannuti) architecture-based controllers, are considered in this paper for loop...
Modeling and Control of the Yaw Channel of a UAV Helicopter (2009)
Guowei Cai, Student Member, Ben M. Chen, Kemao Peng, Miaobo Dong, Tong H. Lee
Abstract—We present in this paper the modeling and flightcontrol-system design for the yaw channel of an unmannedaerial-vehicle (UAV) helicopter using a newly developed composite nonlinear feedback...
J. Gadewadikar, F. L. Lewis, Kamesh Subbarao, Ben M. Chen
The aim of this paper is to present rigorous and efficient methods for designing flight controllers for unmanned helicopters that have guaranteed performance, intuitive appeal for the flight control...
Exact Computationof the Infimum in Hoo-Optimization Via Output Feedback (2009)
Ben M. Chen, Student Member, Ali Saberi, Uy-loi Ly
Abstract- This paper presents a simple and noniterative procedure for the computation of the exact value of the infimum in the standard Roo.optimal control with output feedback. The problem...
measurement feedback for linear systems � (2009)
Ben M. Chen, Yufan Zheng, Cishen Zhang
� This paper was not presented at any IFAC meeting. This paper was recommended for publication in revised form by Associate Editor F. Jabbari under the direction of Editor R. Tempo.
Ben M. Chen, Senior Member, Tong H. Lee, Kemao Peng, V. Venkataramanan
Abstract—We study in this paper the theory and applications of a nonlinear control technique, i.e., the so-called composite nonlinear feedback control, for a class of linear systems with actuator...
Zongli Lin, Xiangyu Bao, Ben M. Chen
As a complement to some new breakthroughs on global almost disturbance decoupling problem with stability for nonlinear systems, in a recent note, we identified a class of unstable zero dynamics that...
Development of a real-time onboard and ground station software system for a UAV helicopter (2007)
Miaobo Dong, Ben M. Chen, Guowei Cai, Kemao Peng
We report in this paper the development of a real-time software system for an unmanned aerial vehicle (UAV) helicopter, which consists of an embedded computer onboard and a ground station served by a...
A partition approach for the restoration of camera images of plannar and curled document (2006)
Shijian Lu, Ben M. Chen, C. C. Ko
As camera resolution increases, high-speed non-contact text capture through a digital camera is opening up a new channel for text capture and understanding. Unfortunately, the captured document...
Perspective rectification of document images using fuzzy set and morphological operations (2005)
Shijian Lu, Ben M. Chen, C. C. Ko
In this paper, we deal with the problem of document image rectification from image captured by digital cameras. The improvement on the resolution of digital camera sensors has brought more and more...
Kemao Peng, Ben M. Chen, Senior Member, Guoyang Cheng, Student Member, Tong H. Lee
Abstract—Friction and nonlinearities result in large residual errors and deteriorate the performance of head positioning of hard disk drive (HDD) servo systems and other mechanical servo systems....
V. Venkataramanan, Kemao Peng, Ben M. Chen, Senior Member, Tong H. Lee
Abstract—In a typical disk drive servo system, two or more types of controllers are used for track seeking, track following, and track settling modes. This leads to the problem of mode switching...
Development of a web-based laboratory for control experiments on a coupled tank apparatus (2001)
C. C. Ko, Senior Member, Ben M. Chen, Jianping Chen, Yuan Zhuang, Kay Chen Tan
Abstract—The Internet provides a new environment for developing a variety of applications for educational and research purposes. This paper presents the implementation of a web-based laboratory...
A Web-Based Virtual Laboratory on a Frequency Modulation Experiment (2001)
Chi Chung Ko, Senior Member, Ben M. Chen, Shaoyan Hu, Vikram Ramakrishnan, Chang Dong Cheng, ...
Abstract—With the rapid proliferation of Internet technologies, accessing and operating engineering instruments remotely anytime anywhere is fast becoming a reality. This paper presents a new...
Teck B. Goh, Zhongming Li, Ben M. Chen, Tong Heng Lee, Tony Huang
Abstract—This paper deals with the problem of a servo system design for a conventional hard disk drive with a single voice-coil-motor (VCM) actuator using a so-called robust and perfect tracking...
Ben M. Chen, Tong H. Lee, Chang-chieh Hang, Yi Guo, Siri Weerasooriya
Abstract — A robust controller design for a piezoelectric bimorph nonlinear actuator is considered in this paper. The nonlinear dynamics of the actuator are first linearized using the stochastic...
Chen, Ben M., Weller, Steven R.
This paper presents a comprehensive picture of the mapping of structural properties associated with general linear multivariable systems under bilinear transformation. While the mapping of poles of...
Chen, Ben M., Weller, Steven R.
This paper presents a comprehensive picture of the mapping of structural properties associated with general linear multivariable systems under bilinear transformation. While the mapping of poles of...
Ben M. Chen, T~t Ali Saberit, P. Sannuti
All possible recoverable target loop transfer functions for a given plant are characterized, necessary and sufficient conditions for a given plant to have at least one recoverable target loop are...