Design and Control of a 6-DOF Active Vibration Isolation System Using a Halbach Magnet Array

Kim, Myeong Hyeon; Kim, Hyo Young; Kim, Hyeon Chang; Ahn, Dahoon; Gweon, Dae−Gab

doi:10.1109/tmech.2016.2539349

Cited by 46 publications

(17 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where e = x 1x 1d , x 1d is the reference trajectory, and k 1 is a positive gain. Differentiating (10) and noting (8), derivative of error can be written as…”

Section: Desired Compensation Adaptive Robustmentioning

confidence: 99%

“…The transmissibility of system (8) with the DCARC controller, DRC controller, and AC controller is simulated as shown in Figure 4. The natural frequency of the system is 1.4 Hz.…”

Section: Numerical Simulationmentioning

confidence: 99%

“…Vibration isolation system is widely used in industrial equipment [1,2], building structure [3,4], and commercial vehicles [5][6][7], to protect the isolating object, such as human and structure, from being damaged by vibration with certain frequency regions. Especially in recent years, with the rapid development of nanoprecision technology, ultraprecision positioning devices, nanolevel measuring instruments, which are extensively used in medical research, biotechnology, semiconductor manufacturing, and space exploring, are demanding an increasingly need for high-performance vibration isolation system [8][9][10][11][12][13][14]. According to the source, vibration can be divided into two categories, the ground vibration which is caused by geodetic pulsation, wind blowing, automobile moving, people walking, and so forth, transferred via the suspension of the system, and the load vibration which is caused by inertial force from a moving load or other disturbance directly acted on the isolation system [15].…”

Section: Introductionmentioning

confidence: 99%

“…For the system in(8), with the DCARC control law(13) and the parameter adaptation law(14), the following results hold (A) In general, all signals in system (8) are bounded.Furthermore, the positive definite function V s is defined as…”

mentioning

confidence: 99%

See 3 more Smart Citations

Desired Compensation Adaptive Robust Control of an Active Vibration Isolation System

et al. 2018

View full text Add to dashboard Cite

Active vibration isolation system (AVIS) has attracted increasing attention of researchers in precision engineering. In this paper, a desired compensation adaptive robust controller (DCARC) is proposed for an AVIS developed in our laboratory. The AVIS composed of one platform and three active isolators is required to achieve high-performance vibration isolation as well as low trajectory tracking error for positioning. The vertical three degrees of freedom (DOFs) and horizontal three DOFs are decoupled by the joint bearing of the isolators. The dynamic model of the system is built and is simplified to three single-input-single-output (SISO) systems. The DCARC control scheme is then proposed, which contains a deterministic robust control (DRC) term and an adaptive control (AC) term. The high performance in vibration isolation and positioning can be subsequently achieved, even the actual load and system stiffness are unknown and there exists direct bounded disturbance on the platform. The AC term is designed to estimate the unknown parameters of the system. The DRC term can improve the robustness of the system, which is used to reject the direct disturbance and the parameter estimation error. Furthermore, the computing time and the influence of the measurement noise can be reduced effectively by reason of desired compensation. The numerical simulation and comparative experiments are carried out under the conditions of using DCARC, DRC, and AC controllers. The experimental results validate that the proposed DCARC control strategy outperforms other control method and possesses both high-performance vibration isolation and low tracking error.

show abstract

“…where e = x 1x 1d , x 1d is the reference trajectory, and k 1 is a positive gain. Differentiating (10) and noting (8), derivative of error can be written as…”

Section: Desired Compensation Adaptive Robustmentioning

confidence: 99%

“…The transmissibility of system (8) with the DCARC controller, DRC controller, and AC controller is simulated as shown in Figure 4. The natural frequency of the system is 1.4 Hz.…”

Section: Numerical Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Desired Compensation Adaptive Robust Control of an Active Vibration Isolation System

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Due to size restrictions inside the vertical vibration isolator, small actuators (LA12-17, BEI Technologies, San Marcos, CA, USA) manufactured with a diameter of 30.48mm and a mid-stroke length of 43.18mm were chosen. Because the clearance on each side of voice coil actuator is 0.38 mm, the coil side is mounted on a two-dimensional translation stage, which is used to adjust the space between the coil and magnet [16][17][18]. The magnet side is mounted on an aluminum plate as shown in Figure 2.…”

Section: Fig3 -Diagram Of the Feedback Loopmentioning

confidence: 99%

Design of an Active Low Frequency Vibration Isolation System for Atom Interferometry by Using Sliding Mode Control

Luo¹,

Cheng²,

Wu³

et al. 2017

CEJ

View full text Add to dashboard Cite

Active vibration isolation is gaining increased attention in the ultra-high precision application of atom interferometry to effectively treat the unavoidable ground vibration. In this system, a digital control subsystem is used to process and feedback the vibration measured by a seismometer. A voice coil actuator is used to control and cancel the motion of a commercial passive vibration isolation platform. The system level simulation model is established by Simulink software, The simulation results demonstrate the asymptotic stability of the system and the robustness of the control algorithm. Compared with the conventional lead-lag compensation type controller, the algorithm adopted uses sliding mode control, taking advantage of its easy computer implementation and its robust high performance properties. With the feedback path closed, the system acts like a spring system with a natural resonance frequency of 0.02 Hz. The vibration noise in the vertical direction is about 20 times reduced during 0.1 and 2 Hz, The experimental results verify that the isolator has significant vibration isolation performance, and it is very suitable for applications in high precision gravity measurement.

show abstract

An active high-static-low-dynamic-stiffness vibration isolator with adjustable buckling beams: theory and experiment

Xu,

Niu,

Zhang

et al. 2024

Appl. Math. Mech.-Engl. Ed.

View full text Add to dashboard Cite

Design and Control of a 6-DOF Active Vibration Isolation System Using a Halbach Magnet Array

Cited by 46 publications

References 19 publications

Desired Compensation Adaptive Robust Control of an Active Vibration Isolation System

Desired Compensation Adaptive Robust Control of an Active Vibration Isolation System

Design of an Active Low Frequency Vibration Isolation System for Atom Interferometry by Using Sliding Mode Control

An active high-static-low-dynamic-stiffness vibration isolator with adjustable buckling beams: theory and experiment

Contact Info

Product

Resources

About