A Variable Parameter Ambient Vibration Control Method Based on Quasi-Zero Stiffness in Robotic Drilling Systems

Zhang, Laixi; Zhao, Chenming; Feng, Qian; Dhupia, Jaspreet Singh; Wu, Mingliang

doi:10.3390/machines9030067

Cited by 11 publications

(4 citation statements)

References 26 publications

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“…This method can be applied to nonlinear oscillatory systems where the nonlinear terms are not small and no perturbation parameter is required. The motion differential Equation ( 5) can be solved using the harmonic balance method [22], with the steady-state response of the equation set as:…”

Section: Passive Vibration Control System 21 Mathematical Modelmentioning

confidence: 99%

“…Without the restriction of stroke, the piston movement does not cause volume change in the cylinder, which meets the amplitude requirements of the ambient vibration in an aircraft assembly plant. A shear hybrid dualrod MRD is proposed here in combination with the vibration control mechanism designed in [22] in order to improve active vibration control. The parameters are listed in Table 2, and a 3D model is shown in Figure 11.…”

Section: Active Control With a Magnetorheological Dampermentioning

confidence: 99%

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An Active Control with a Magnetorheological Damper for Ambient Vibration

et al. 2022

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The ambient vibration in manufacturing and assembly plants caused by nearby large equipment or heavy vehicles can produce dynamic machining error and even generate chatter in machining systems such as robotic drilling systems. In this paper, we present an active control method with a magnetorheological damper (MRD) for reducing ambient vibration in a robotic machining system, with the advantages of wider frequency bandwidth and robustness. A sliding mode control (SMC) algorithm is proposed as well. The control performance of the SMC under different excitations is simulated by Simulink and compared with that of the PID control algorithm; the result shows that the SMC is superior to the PID control and passive vibration control. An MRD is designed based on the control force of the active vibration control in the time domain in order to provide the required damping force. The results of co-simulation using ADAMS and Simulink verify that the ability of the SMC to control vibration performance is significantly improved compared with that of the passive vibration control.

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Section: Passive Vibration Control System 21 Mathematical Modelmentioning

confidence: 99%

Section: Active Control With a Magnetorheological Dampermentioning

confidence: 99%

An Active Control with a Magnetorheological Damper for Ambient Vibration

et al. 2022

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“…Vibration reduction has received worldwide attention due to its important applications in many fields, such as machinery, bridges, vehicles, aerospace, ships, and so on [1][2][3]. Vibration isolation and absorption are usually used to attenuate the sustained and harmful oscillations.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of a nonlinear vibration reduction system with time delay feedback control

Mao

Ding

2022

Preprint

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This paper reveals the dynamical properties of a nonlinear vibration reduction system with time delay feedback control and quasi-zero stiffness structure. The stable and unstable regions of the trivial solution of the system in the parameter plane of time delay and feedback gain are given. The amplitude-frequency responses and force transmissibility of the system under harmonic excitation are determined. The optimized parameters are obtained by using genetic algorithm. The complicated oscillations are explored, such as chaotic motions and multi-periodic orbits. Afterwards, the displacement and the energy of the primary structure and the force transmitted to the base are discussed under the shock excitation and random excitation respectively. The influences of time delay on the dynamical behaviors and reduction performance are shown.

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“…Apart from the nonlinear stiffness application in the isolation systems, some researchers have also studied the nonlinear isolation by using electromagnetic shunt damping [17,18]. In recent years, NSMs have also been studied in practical engineering applications and in experimental tests, including drilling systems [19], robots [20], Stewart platforms [21], and vehicle seats [22].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Vibration Isolation Performance by Exploiting Novel Spring-Bar Mechanism

Shi

Yang

2021

Applied Sciences

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This study investigates the use of a spring-bar mechanism (SBM) in a vibration suppression system to improve its performance. The SBM, comprising bars and springs, is configured with a conventional linear spring-damper isolator unit. The dynamic response, force transmissibility, and vibration energy flow behaviour are studied to evaluate the vibration suppression performance of the integrated system. It is found that the SBM can introduce hardening, softening stiffness, or double-well potential characteristics to the system. By tuning the SBM parameters, constant negative stiffness is achieved so that the natural frequency of the overall system is reduced for enhanced low-frequency vibration isolation. It is also found that the proposed design yields a wider effective isolation range compared to the conventional spring-damper isolator and a previously proposed isolator with a negative stiffness mechanism. The frequency response relation of the force-excited system is derived using the averaging method and elliptical functions. It is also found that the system can exhibit chaotic motions, for which the associated time-averaged power is found to tend to an asymptotic value as the averaging time increases. It is shown that the time-averaged power flow variables can be used as uniform performance indices of nonlinear vibration isolators exhibiting periodic or chaotic motions. It is shown that the SBM can assist in reducing force transmission and input power, thereby expanding the frequency range of vibration attenuations.

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A Variable Parameter Ambient Vibration Control Method Based on Quasi-Zero Stiffness in Robotic Drilling Systems

Cited by 11 publications

References 26 publications

An Active Control with a Magnetorheological Damper for Ambient Vibration

An Active Control with a Magnetorheological Damper for Ambient Vibration

Dynamics of a nonlinear vibration reduction system with time delay feedback control

Enhancing Vibration Isolation Performance by Exploiting Novel Spring-Bar Mechanism

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