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Erie, PA, United States

Gannon University is a private, co-educational Catholic university offering associate's, bachelor's and master's degrees, certificates and doctoral degrees and is located in Erie, Pennsylvania, United States. Gannon University has an alumni base numbering around 31,500. Current enrollment is 4,238.Gannon's academic programs are appropriately accredited. For the sixth consecutive year, U.S. News & World Report's "America's Best Colleges 2010" has ranked Gannon as a Top Tier Master's University in the northern section of the United States. And, for the first time, Gannon was also ranked as a Top Up-and-Coming School. This is only the second year for this category, which is determined by a peer assessment survey of high-ranking college officials, and recognizes institutions "that have recently made the most promising and innovative changes in academics, faculty, students, campus or facilities." Only 9 institutions in the northern region were selected for this category.Gannon's signature programs, Core of Discovery and Lifecore provide students with the foundation for experiencing both the academic and co-curricular experiences of a solid college education. The Core of Discovery is Gannon's liberal arts core curriculum that helps students understand humanity, social concepts and structures, their own ethics and values. Lifecore challenges a student's growth and development through participation of events and activities that encompass nine lifestyle dimensions.A range of campus organizations and activities encourages academic interests, community service, and moral and spiritual growth. Gannon also provides students with a broad program in intramural and intercollegiate athletics, including 18 athletic programs for men and women at the NCAA Division II level. Wikipedia.

Zheng Q.,Gannon University | Gao Z.,Cleveland State University
Proceedings of the World Congress on Intelligent Control and Automation (WCICA) | Year: 2012

This paper is focused on the design and factory testing of a disturbance decoupling control (DDC) approach for hose extrusion processes. A unique dynamic DDC strategy, based on the active disturbance rejection control (ADRC) framework, is designed and implemented in programmable logic control (PLC) code for temperature regulation in the volumetric flow of a polymer single-screw extruder. With the DDC method, it is shown that a largely unknown square multivariable system is readily decoupled by actively estimating and rejecting the effects of both the internal plant dynamics and external disturbances. The proposed DDC approach requires very little information on plant model and has the inherent disturbance rejection ability, and it proves to be a great fit for the highly nonlinear and multivariable extrusion processes. Recently, the DDC design strategy has been put under rigorous test at Parker Hannifin Parflex hose extrusion plant. Across multiple production lines for over eight months, the product performance capability index (Cpk) was improved by 30 percent and energy consumption is reduced over 50 percent. The production line data demonstrates that ADRC is a transformative control technology with great potentials in streamline factory operations, saving energy and improving quality, all at the same time. © 2012 IEEE.

Zheng Q.,Gannon University | Gao Z.,Cleveland State University
Proceedings of the 29th Chinese Control Conference, CCC'10 | Year: 2010

This paper presents a summary of some recent developments in practical applications of the active disturbance rejection control (ADRC). ADRC is a novel disturbance estimation and rejection concept, leading to a new technology with a distinct advantage where, unlike most existing methods, disturbances, internal and external, are actively estimated and rejected. Applications of the new approach in solving industry-wide bench mark problems have led to a slew of innovative solutions. The scope of the applications shown in this paper includes motion control, web tension regulation, DC-DC power converters, chemical processes, and micro-electro-mechanical systems gyroscope. Recent production line validation results obtained by the third party are also included.

Goforth F.J.,Georgia Southern University | Zheng Q.,Gannon University | Gao Z.,Cleveland State University
ISA Transactions | Year: 2012

A disturbance rejection based control approach, active disturbance rejection control (ADRC), is proposed for hysteretic systems with unknown characteristics. It is an appealing alternative to hysteresis compensation because it does not require a detailed model of hysteresis, by treating the nonlinear hysteresis as a common disturbance and actively rejecting it. The stability characteristic of the ADRC is analyzed. It is shown that, in the face of the inherent dynamic uncertainties, the estimation and closed-loop tracking errors of ADRC are bounded, with their bounds monotonously decreasing with the observer and controller bandwidths, respectively. Simulation results on a typical hysteretic system further demonstrate the effectiveness of the proposed approach. © 2012 ISA. Published by Elsevier Ltd. All rights reserved.

Zheng Q.,Gannon University | Gao L.Q.,North Central College | Gao Z.,Cleveland State University
Journal of Dynamic Systems, Measurement and Control, Transactions of the ASME | Year: 2012

This paper is concerned with the question of, for a physical plant to be controlled, whether or not its internal dynamics and external disturbances can be realistically estimated in real time from its input-output data. A positive answer would have significant implications on control system design, because it means that an accurate model of the plant is perhaps no longer required. Based on the extended state observer, it is shown that, for an nth order plant, the answer to the above question is indeed yes. In particular, it is shown that the estimation error converges to the origin asymptotically when the model of the plant is given. In face of large dynamic uncertainties, the estimation error is shown to be bounded. Furthermore, it is demonstrated that the error upper bound monotonously decreases with the bandwidth. Note that this is not another parameter estimation algorithm in the framework of adaptive control. It applies to a large class of nonlinear, time-varying processes with unknown dynamics. The solution is deceivingly simple and easy to implement. The results of analysis are further verified through simulation and hardware tests. © 2012 American Society of Mechanical Engineers.

Nixon C.L.,Behrend College | Linkie C.A.,Gannon University | Coleman P.K.,Bowling Green State University | Fitch C.,Kent State University
Journal of Adolescent Health | Year: 2011

Purpose: To develop effective prevention and intervention efforts that optimize adolescent health, factors must be identified that affect health outcomes. The purpose of this study was to examine the association between somatic symptomatology and experiences with relational victimization (RV). Methods: We prospectively tested the unique role of relational peer victimization in predicting adolescents' somatic complaints (SC), while accounting for their previous physical symptoms and peer victimization experiences (i.e., relational and physical victimization), as well as concurrent experiences with physical victimization (PV). Questionnaires were administered to 1,595 students (52% females) from eight schools in one school district (grades, 58) in the Midwestern part of the United States during the fall and spring sessions of the academic school year. Self-reported measures included demographic characteristics, victimization experiences, and assessment of SC. Results: RV was a unique predictor of increased somatic symptoms, even after controlling for adolescents' sex, grade level, initial SC, previous victimization experiences, and concurrent experiences with PV. Notably, RV was a stronger predictor of somatic symptoms than was PV. Conclusions: Our findings underscore the need for a comprehensive approach when addressing adolescents' physical health symptoms. Adolescents may benefit from clinicians looking beyond the obvious and using gentle probing to uncover how unique experiences with RV may be associated with overall health. © 2011 Society for Adolescent Health and Medicine. All rights reserved.

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