Uncertainty analysis for dynamic properties of MEMS resonator supported by fuzzy arithmetics

Martowicz, Adam; Stanciu, Irina; Uhl, Tadeusz

doi:10.1260/175095409788922293

Cited by 6 publications

(3 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is worth noticing that, in a broader view, SMA are willingly used to modify the properties of the host structures [36]. On the other hand, the involved complex fluid flow and fluid-structure interaction related phenomena need the researchers' particular attention to be correctly and efficiently addressed to enable the enhancement of the dynamic properties for various types of structural components [37][38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Enhancement of dynamic properties for a gas foil bearing using structural components made of shape memory alloys – experimental study

2023

IJM

View full text Add to dashboard Cite

Bearings are commonly employed in various types of rotating machineries.Their properties indisputably influence the overall performance and time of maintenance-free operation of the mechanical systems in which they are used to support the shafts. Consequently, much effort is considered to provide reliable bearings' solution and develop new methods and technical tools for measurement and possibly modification of the operational characteristics of the above-mentioned parts. In reference, the concept of a smart bearing is developed as providing the means for real-time passive and active control of the bearings' behavior as well as different types of smart materials are used to enhance their characteristics. The current study deals with an application of structural components made of shape memory alloys to gas foil bearings (GFB). The paper presents and discusses the results of experimental tests conducted for the bearing's prototype to characterize the efficiency of thermally-induced modifications of geometric properties of one of the crucial parts of the investigated GFB.

show abstract

Section: Introductionmentioning

confidence: 99%

Enhancement of dynamic properties for a gas foil bearing using structural components made of shape memory alloys – experimental study

2023

IJM

View full text Add to dashboard Cite

show abstract

“…Most of these modifications are essentially implemented to withstand the pull-in instability but in most cases, these revisited designs complicate their fabrication processes and cost, create residual stress, and therefore may reduce the overall system reliability [23]. Furthermore, the existence of uncertainty in the fabrication and characterization of MEM devices in addition to the presence of noise/disturbance represent major contributors in reducing the performance of such micro-sized devices [26].…”

Section: Introductionmentioning

confidence: 99%

On the implementation of adaptive sliding mode robust controller in the stabilization of electrically actuated micro-tunable capacitor

et al. 2020

View full text Add to dashboard Cite

Parallel-plates based micro-tunable capacitors are known to have low travel range, which worsen as going even lower in terms of their initials gap sizes. Such conditions have put strict requirements on the operation of such designs and hence hindering their use in numerous practical applications requiring high tunability. This work is proposed to examine the possibility to implement a closed-loop control strategy to increase the maximum capacitance and therefore tunability of micro tunable capacitors. The suggested control strategy is implemented on an electrostatically actuated parallel-plates (one stationary and one movable) based micro-capacitor and had an objective to stabilize the movable electrode when it is close to the fixed one for the sake of maximizing its maximum capacitance and possibly improving its overall tunability. Robustness of the micro-capacitor to the so-called pull-in phenomenon (short-circuit instability) when using the closed loop control scheme is studied. Indeed, an adaptive sliding mode controller is designed to compensate the effects of uncertainty, disturbance and eliminate any possibility for chattering phenomenon. The controller proficiencies in terms of stabilizing the micro-capacitor and its robustness to uncertainty as well as disturbance have been thoroughly examined. Furthermore, the effects of the control parameters on the behavior of micro-capacitor, such as overshoot, settling time, steady state error, robustness to uncertainty, external disturbances and to the chattering phenomenon, have been completely inspected. The obtained results indicated satisfactory proficiency and trustworthiness of the proposed control strategy to achieve high level of tunability and maximum capacitance.

show abstract

“…Widely used different MEMS devices also require many tests to be performed to elaborate designs with desired properties [5,12,13]. As it is of common engineering practice, the procedures of virtual prototyping, including finite element (FE) analyses, are carried out to investigate static and dynamic properties of microdevices.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Static and Dynamic Properties of Micromirror with the Application of Response Surface Method

Martowicz¹,

Klepka²,

Uhl³

2012

The International Journal of Multiphysics

Self Cite

View full text Add to dashboard Cite

The paper presents the results of an application of response surface method to aid the analysis of variation of static and dynamic properties of micromirror. The multiphysics approach was taken into account to elaborate finite element model of electrostatically actuated microdevice and coupled analyses were carried out to yield the results. Used procedure of metamodel fitting is described and its quality is discussed. Elaborated approximations were used to perform the sensitivity analysis as well as to study the propagation of variation introduced by uncertain and control parameters. The input parameters deal with geometry, material properties and control voltage. As studied output characteristics there were chosen the resultant static vertical displacement of reflecting surfaces and the resonance frequency related to the first normal mode of vibration.

show abstract

Uncertainty analysis for dynamic properties of MEMS resonator supported by fuzzy arithmetics

Cited by 6 publications

References 17 publications

Enhancement of dynamic properties for a gas foil bearing using structural components made of shape memory alloys – experimental study

Enhancement of dynamic properties for a gas foil bearing using structural components made of shape memory alloys – experimental study

On the implementation of adaptive sliding mode robust controller in the stabilization of electrically actuated micro-tunable capacitor

Analysis of Static and Dynamic Properties of Micromirror with the Application of Response Surface Method

Contact Info

Product

Resources

About