Novel Distributed PZT Active Vibration Control Based on Characteristic Model for the Space Frame Structure

Abstract

A novel distributed PZT control strategy based on characteristic model is presented for space frame structure in this paper. It is a challenge to obtain the exact mechanical model for space structure, since it is a coupling MIMO plant with unknown parameters and disturbances. Thus the characteristic modeling theory is adopted to establish the needed model, which can accurately describe the dynamic characteristics of the space frame structure in real time. On basis of this model, a keep tracking controller is designed to suppress the vibration actively. It is shown that the proposed model-free method is very robust and easy to implement. To solve the complex and difficulty problem on PZT location optimization, an efficient method with modal strain energy and maximum vibration amplitude is proposed. Finally, a simulation study is conducted to investigate the effectiveness of the proposed active vibration control scheme.

Fuzzy PD hybrid control of low frequency vibration of annular antenna

“…In the past several decades, the active vibration control of space truss structures based on intelligent actuators has received extensive and in-depth researches. [3][4][5][6][7][8] Among these researches, the piezoelectric stack actuator is one of mostly used intelligent actuators due to the prominent advantages such as large actuating force, fast response, light weight and low power consume. [5][6][7][8] With the rapid development of space technology, the size of space truss structures becomes more and more larger, and their modal frequencies become more and more lower.…”

Characteristic Model-Based Adaptive Control for a Class of MIMO Uncertain Nonaffine Nonlinear Systems Governed by Differential Equations

“…It is worth mentioning that the characteristic modeling differs from the conventional model reduction methods in that all information of the original dynamic model, including uncertainties and nonlinearities, is compressed/integrated into the time-varying coefficients of the characteristic model instead of truncating parts of the plant model [28,32,33]. e timevarying coefficients of the characteristic model are referred to as the characteristic parameters [33,35,36], and the characteristic parameters are identified online adaptively [31,33,35,37]. e characteristic model-based adaptive control might be a fresh perspective in the field of adaptive control: creating simplicity out of complexity [31], and it has already been applied successfully to more than 400 engineering systems including spacecraft, e.g., the reentry control of a manned spaceship [28,29,32], the control of servo systems with backlash and friction [30], and the control for the swing arm in a Fourier transform spectrometer [38].…”

Monitoring of a controlled space flexible multibody by means of embedded piezoelectric sensors and cameras synergy

“…Several studies have proposed in the past to use piezoceramic materials (lead zirconate titanate [PZT]) or other smart sensors/actuators to sense and actively damp the vibrations (Heganna and Joglekar, 2016; Lampani and Gaudenzi, 2010). As an example, Zhong et al (2016) designed a keep tracking controller to suppress the vibration actively by means of a model-free algorithm. Pai et al (2000) investigated the suppression of steady-state vibrations of a cantilevered skew aluminum plate using nonlinear saturation phenomena and PZT patches.…”

“…A different approach consists in facing the vibration problem from the control algorithm point of view; in particular, the authors have proposed a time-delay control for space multibodies for increasing the phase margins of the controller (Sabatini et al, 2015; Zhong et al, 2016).…”