Cover of: Active vibration control of flexible structures using the Modular Control Patch (MCP) | Steven P. Schmidt

Active vibration control of flexible structures using the Modular Control Patch (MCP)

  • 109 Pages
  • 3.23 MB
  • English
Naval Postgraduate School, Available from National Technical Information Service , Monterey, Calif, Springfield, Va
About the Edition

Active vibration control has been increasingly used as a solution for spacecraft structures to achieve the degree of vibration suppression required for precision pointing accuracy that is not easily achieved with passive damping. This thesis examines the effectiveness and suitability of the Modular Control Patch (MCP) to achieve active vibration control on flexible structures. The MCP was developed by TRW for the United States Air Force and uses a digital signal processor to implement control algorithms. The objective of the MCP program was to design a miniaturized multi-channel digital controller suitable for space-based vibration control. Three different control laws: Positive Position Feedback (PPF), Strain Rate Feedback (SRF), and Integral control were realized using the MCP. These control laws were used independently and in combination in order to discover the most effective damping for the first two modal frequencies on a cantilevered aluminum beam. Two PPF filters in parallel provided the most effective multi-mode damping. Further experiments tested the robustness of the PPF control law implemented by the MCP. Increasing the compensator damping greatly improved PPF robustness and expanded its capability as an effective controller.

The Physical Object
Paginationx, 109 p. ;
ID Numbers
Open LibraryOL25312108M

Active vibration control of flexible structures using the Modular Control Patch (MCP) Active vibration control of flexible structures using the Modular Control Patch (MCP) by Schmidt, Steven P.

Publication date TZ Topics. A complete solution for problems of vibration control in structures that may be subject to a broadband primary vibration field, this book addresses the following steps: experimental identification of the dynamic model of the structure; optimal placement of sensors and actuators; formulation of control constraints in terms of controller frequency response shape; controller design and simulation; and controller Author: Alberto Cavallo.

`The book is highly recommended to students, practising structural engineers and to researchers who are interested in vibration control and active structures. ' Zentralblatt MATH, () ` The book is written in a very easy and interesting style and has a good set of problems at the end of each : A.

Preumont. With Active Control of Structures, two global pioneers present the state-of-the-art in the theory, design and application of active vibration the demand for high performance structural systems increases, so will the demand for information and innovation in structural vibration control; this book provides an effective treatise of the subject that will.

This paper presents experimental results of vibration suppression of a flexible structure using smart materials and a miniaturized digital controller, called the modular control patch (MCP).

The vibration control of flexible structures using the smart ER or MR fluid can be achieved from two different methods. The first approach is to replace conventional viscoelastic materials by the ER or MR fluid. This method is very effective for shape control of flexible structures such as plate Cited by: 2.

Abstract. This paper presents the active vibration control of a flexible cantilever beam. The cantilever beam was excited by steady-state sinusoidal and white noise point forces.

The vibrational control system was implemented using one piezo ceramic actuator bonded on the beam and the adaptive controller based on the Filtered-X LMS by: H. Gu and G. Song, "Active vibration suppression of a flexible beam with piezoceramic patches using robust model reference control," Smart Materials and Structures, vol.

16, no. 4. Vibration Control of Active Structures. The paper is divided into three parts. The first one is devoted to the active damping of structures with collocated actuator/sensor pairs; the paper first discusses the benefit of the collocated architecture and its consequence on stability and robustness with respect to structural changes.

The efficiency of the active vibration control of flexible systems is limited by the delay in the feedback loop, which causes instability at higher frequencies.

Details Active vibration control of flexible structures using the Modular Control Patch (MCP) FB2

In order to design the transfer functions of the feedback control system, it is necessary to use the frequency response functions of the control object. parameters of the system are known [6,7,8]. In studies where passive vibration control or active linear vibration control has been explored, the most important step is to develop a very detailed model of the system.

Quan explored the use of a switching vibration absorber to control a multiple degree of freedom structure [6].Author: Matthew Thomas Jamula. This book is intended for structural engineers who want to acquire some background in vibration control; it can be used as a textbook for a graduate course on vibration control or active structures.

A solutions manual is available through the publisher to teachers using this book. In the literature, there are published review articles discussing fundamental aspects of active vibration control. Rao and Sunar published a review paper on the use of piezoelectric materials as sensors and actuators for control of flexible structures.

In this review paper, they presented the general framework of structural control strategies and presented the applications in various by: 2. Active and Passive Vibration Control of Structures form an issue of very actual interest in many different fields of engineering, for example in the automotive and aerospace industry, in precision engineering (e.g.

in large telescopes), and also in civil engineering. Basics of smart structures and their applications is explained by V. Wadhvan.1 Neda Darivandi Shoushtari has explained optimal active control of flexible structures which deals with shape control and vibration control strategies.2 Vibration control analysis of a cantilever beam using of piezoelectric patches is discussed by Hamed Cited by: 6.

Vibration Control of Active Structures: An Introduction. This text is an introduction to the dynamics of active structures and to the feedback control of lightly damped flexible structures; the emphasis is placed on basic issues and simple control strategies.

Active control involves the use of sensors to sense the vibratory motion of the structure, a controller to generate a control signal and an amplifier to amplify the control signal. My objective in writing this book was to cross the bridge between the structural dynamics and control communities, while providing an overview of the potential of SMART materials for sensing and actuating purposes in active vibration c- trol.

I wanted to keep it relatively simple and focused on systems which worked. In this study, vibration control of piezoelectric structure is simulated by ANSYS/Multiphysics (v). A block diagram of the control system [3] used for the present study on active vibration control is shown in Figure The input reference value is taken as zero in the closed loop vibration control.

Download Active vibration control of flexible structures using the Modular Control Patch (MCP) FB2

Active Vibration Suppression of a Flexible Structure Using Smart Material and a Modular Control Patch By G. Song, S.P.

Schmidt and B.N. Agrawal Get PDF ( KB)Cited by: Calhoun: The NPS Institutional Archive Faculty and Researcher Publications Faculty and Researcher Publications Active Vibration Suppression of a.

The use of this discrete system was the basis for controller design of these flexible structures.

Description Active vibration control of flexible structures using the Modular Control Patch (MCP) EPUB

However, even the best model of a system is not able to overcome the need of an advanced controller for vibration suppression. Flexible structures, which are a common problem in robotics, represent nonlinear terms such as damping.

Song G, Schmidt S P and Agrawal B N Experimental study of active vibration suppression of flexible structure using modular control patch Aerospace Conf.

Proc. (Snowmass at Aspen, CO, USA) vol 1 (Piscataway, NJ: IEEE) pp Cited by: Active vibration suppression of a flexible structure using smart material and a modular control patch 29 November | Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering, Vol.

No. 4Cited by: 3. Active Vibration Control of Smart Structures The active vibration control of smart aerospace structures that inherently exhibit flexibility becomes more important when the designers attempt to push with the state of the art, faster and lighter structures for aerospace applications [7].

Generally two steps are necessary for the. behavioural aspects of piezolaminated plates. Using piezoelectric smart structures for the active vibration control has paid considerable attention in the last decade.

Balamurugan V. and Narayanan S. [3] studied the mechanics for the coupled analysis of piezolaminated plate and curvilinear shell structures and their vibration control performance.

The aim of this paper is to illustrate the active control of vibration of a flexible structure using a model-based digital controller.

The state-space model of the system is derived using a system identification technique known as the Observer/Kalman Filter Identification (OKID) method together with Eigensystem Realization Algorithm (ERA). In order to evaluate vibration control performance of the proposed hybrid mount, an experimental apparatus is established as shown in Fig.

dimension of the steel beam used in this experiment is mm (length)×60 mm (width)×15 mm (thickness). The positions of the hybrid and rubber mounts are listed in Table flexible beam is excited by the Cited by: vibration along the beam, using single-input single-output and SIMO control structures are presented and discussed.

Key words: Active vibration control, self-tuning control, flexible beam structure. LIBRARY. Abstract: This paper investigates the feasibility of using active force control (AFC) method for the problem of active vibration control (AVC) of a flexible thin plate structure through simulation.

The plate system was first modeled and simulated using Finite Difference (FD) method. Then, the validity of the obtained. Smooth adaptive sliding mode vibration control of a flexible parallel manipulator with multiple Numerical simulation is performed and the results indicate that the proposed active vibration control strategy is effective.

“ Active vibration suppression of a flexible structure using smart material and modular control patch,” Proc Cited by: Basically, two fuzzy control systems are used for active vibration control: Mamdani and Takagi–Sugeno (see). People who deal with the Takagi–Sugeno fuzzy controller perform a modal active control called, in this case, fuzzy modal control.

The latter is carried out by using a decomposed parallel fuzzy control where each controller is Cited by: Decentralised control for vibration isolation with multiple active mounts will be discussed in this paper as an example of an engineering structure, and this will be contrasted with the way that decentralised control loops enhance the vibration of the inner ear in the active Cited by: 3.