Modeling and analysis of a multi-dimensional vibration isolator based on the parallel mechanism

Li, Bing; Zhao, Wei; Deng, Zongquan

doi:10.1016/j.jmsy.2010.12.001

Cited by 28 publications

(26 citation statements)

References 9 publications

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“…6, and the size of the mechanism is set up according to the structure and the dynamic parameters of the vibrator [14]. The PM's structure parameters are set as:…”

Section: The Initial Setup Of the Pm Vibrator's Sizementioning

confidence: 99%

Research on Single Drive and Multi-dimension Output Vibrator for Fuse Sand Filling Based on Decoupled 1T2R Parallel Mechanism

et al. 2016

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Abstract. In this paper a three-dimension vibrator for fuses' sand filling, including one-dimension vertically translation and two-dimension oscillating rotation (1T2R) is presented, which is used to improve the low efficiency in the process of traditional fuses' sand filling. The paper starts with a type synthesis of a new kind of 1T2R parallel mechanism (PM) which is constructed based on the POC set. After two of the driving joints in the PM are substituted by the spring-damp system, the design propose of single-input and multi-outputs can be realized. Then the kinematics analysis and simulation optimization of this mechanism was also carried out.

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“…6, and the size of the mechanism is set up according to the structure and the dynamic parameters of the vibrator [14]. The PM's structure parameters are set as:…”

Section: The Initial Setup Of the Pm Vibrator's Sizementioning

confidence: 99%

Research on Single Drive and Multi-dimension Output Vibrator for Fuse Sand Filling Based on Decoupled 1T2R Parallel Mechanism

et al. 2016

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“…For the MDOF vibration isolation platform, active controllers are the chief method [9][10][11][21][22][23][24][25][26][27]. The key point of the mechanism of active control in MDOF isolator is to generate anti-vibration forces in different directions by actuators and sensors in the designed system.…”

Section: Introductionmentioning

confidence: 99%

Modeling and Dynamics of a MDOF Isolation System

Song¹,

Sun²

2017

Preprint

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This study analyzes the modeling and dynamics of a novel passive in Multi-Degree-of-Freedom (MDOF) vibration isolation platform which can achieve significant isolation effect. Symmetrical Scissor-Like structures (SLSs) are utilized in the proposed MDOF isolation platform as the supporting and isolation elastic components. Based on the mathematical modeling and theoretical analysis of the MDOF vibration isolation system with SLSs, the effect of structural parameter and joint friction on stiffness and damping properties is investigated. It is shown that due to geometric relations within the SLSs, the natural frequencies can be reduced via adjusting structural parameters of the SLS for different direction vibration isolation. Theoretical and experimental results show that the SLS isolation platform can achieve much better loading capacity and vibration isolation performance simultaneously by only using linear passive components because of the MDOF adjustable stiffness property. Therefore, with low costing and energy consumption, the proposed novel isolation platform can provide the improvement of vibration suppression in various engineering practices.

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“…When the base platform vibrates with wind-induced cablecar, the vibrations of the stabilized platform can be alleviated by adjusting the six actuators with appropriate control laws. Most of the available studies on dynamics and control of Stewart platform (Geng et al, 1992;Lebret et al, 1993;Dasgupta and Mruthyunjaya, 1998;Liu et al, 2000;Gallardo et al, 2003;Mukherjee et al, 2007;Lopes, 2009;Li et al, 2012) deals with the case that the base platforms are fixed but for this application the dynamics and control of the mechanism are different from the available analyses.…”

Section: Introductionmentioning

confidence: 99%

“…Hoque et al (2011) proposes a module-type three-degree-of-freedom vibration isolation system for a parallel mechanism using modified zero-power control. Li et al (2012) proposed a hybrid manipulator applied to vibration isolation of the manufacturing systems in which the translations and rotations of the manipulator are decoupled, so the proposed isolator can isolate vibrations with wide range of frequency. Hayat et al (2012) presented the design and analysis of a compliant mechanism using hyperbolic flexural hinges.…”

Section: Introductionmentioning

confidence: 99%

Dynamic analysis and vibration control of a multi-body system using MSC Adams

Alam

Akhlaq

Rahman

2015

Lat. Am. j. solids struct.

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In this paper, modelling and simulation of a multi-body system for its vibration control using sensors and actuators is presented. The model developed on MSC ADAMS consists of six legs connecting moving and base plates using spherical joints with axial rotation of legs constrained. It contains linear actuator collocated with force sensor. Mathematical model of the mechanism representing the Kinematic and Dynamic analysis of model is presented. The Leg Length variation obtained using MATLAB is obtained in order to validate the model developed in MSC ADAMS. Natural frequencies for six different mode shapes are obtained from vibration excitation analysis. A decentralized force feedback controller which uses PID control law with single gain is used for actively attenuating the vibration, which is coming from base platform. The transfer function, defined as the ratio of Laplace transformation of the acceleration of moving plate and base plate, is considered as a measure of isolation. Effect of proportional, derivative and integral feedback is studied separately and together as well. A significant isolation in the resonance transmissibility and natural frequency of the mechanism is demonstrated.

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Modeling and analysis of a multi-dimensional vibration isolator based on the parallel mechanism

Cited by 28 publications

References 9 publications

Research on Single Drive and Multi-dimension Output Vibrator for Fuse Sand Filling Based on Decoupled 1T2R Parallel Mechanism

Research on Single Drive and Multi-dimension Output Vibrator for Fuse Sand Filling Based on Decoupled 1T2R Parallel Mechanism

Modeling and Dynamics of a MDOF Isolation System

Dynamic analysis and vibration control of a multi-body system using MSC Adams

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