ANALYSIS, SIMULATION, AND CONTROL OF VIBRATION IN SMA CONSISITING SYSTEMS

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JAFARI ALI ASGHAR; GHADIRI MAJID; HOMAEINEZHAD M.R.

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Journal: Journal of Aerospace Mechanics Year:2007 | Volume:2 | Issue:3 Page(s): 1-13

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Title

ANALYSIS, SIMULATION, AND CONTROL OF VIBRATION IN SMA CONSISITING SYSTEMS

Author(s)

JAFARI ALI ASGHAR | GHADIRI MAJID | HOMAEINEZHAD M.R. | Issue Writer Certificate

Keywords

SMAQ2

AUSTENITE AND MARTENSITE ELASTIC MODULUSQ3

TANGENTIAL ELASTIC MODULUSQ3

SLIDING MODE CONTROLQ3

PARAMETRIC UNCERTAINTIESQ3

SWITCHING GAINQ3

Abstract

The procedure of modeling+of shape memory alloy (SMA) dynamics and the corresponding computerized algorithm are described extensively in this paper. In shape memory alloys, due to the existence of the Martensite and Austenite phases in the microscopic structure of the alloy and also conversion between the phases, the elasticity modulus of the material shows a time varying behavior, while the structures of the equations describing the dynamics of the system remain similar to the ones with constant elasticity modulus. To evaluate the effect of conversion between phases on the elasticity modulus, the Martensite to Austenite volume fraction is of the main concern. Therefore, the mentioned elasticity modulus can be modeled as an oscillating spring-damper-mass system with variable parameters. Then, a new chattering alleviation algorithm for SLIDING MODE CONTROL (SMC) of non-linear systems is presented. In the new method, a mathematical function for regulating h parameter is introduced. Due to the initial choice of this parameter by designer, the state vector of the system approaches the sliding surface with any arbitrary speed and enters the boundary layer surrounding the sliding surface, while the state vector does not include fast behaviors through the boundary layer. To show the abilities and the merits of the aforementioned regulating routine on the vibration control of a SMA system, simulations are carried out within Simulink environment. The results show that our proposed algorithm has positive effects on the control system performance, while the 5% uncertainity in.the elasticity module has no effect on it.

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APA: Copy

JAFARI, ALI ASGHAR, GHADIRI, MAJID, & HOMAEINEZHAD, M.R.. (2007). ANALYSIS, SIMULATION, AND CONTROL OF VIBRATION IN SMA CONSISITING SYSTEMS. AEROSPACE MECHANICS JOURNAL, 2(3), 1-13. SID. https://sid.ir/paper/102068/en

Vancouver: Copy

JAFARI ALI ASGHAR, GHADIRI MAJID, HOMAEINEZHAD M.R.. ANALYSIS, SIMULATION, AND CONTROL OF VIBRATION IN SMA CONSISITING SYSTEMS. AEROSPACE MECHANICS JOURNAL[Internet]. 2007;2(3):1-13. Available from: https://sid.ir/paper/102068/en

IEEE: Copy

ALI ASGHAR JAFARI, MAJID GHADIRI, and M.R. HOMAEINEZHAD, “ANALYSIS, SIMULATION, AND CONTROL OF VIBRATION IN SMA CONSISITING SYSTEMS,” AEROSPACE MECHANICS JOURNAL, vol. 2, no. 3, pp. 1–13, 2007, [Online]. Available: https://sid.ir/paper/102068/en

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