Active optimal vibration control using dynamic absorber

Tewani, Sanjiv G.; Walcott, B.L.; Rouch, Keith E.

doi:10.1109/robot.1991.131770

Cited by 17 publications

(5 citation statements)

References 6 publications

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“…The two DOF dynamic vibration absorber system was analyzed by Hartog [6]. Later Tewani et al [7] analyzed the model with added functionality. The active control scheme proposed by Tewani et al [8] and the device they patented uses a piezoelectric reaction mass actuator mounted inside a boring bar.…”

Section: Introductionmentioning

confidence: 99%

Study of Chip Reduction Coefficient in Boring Operation Using Metal Laminates at the Tool-Holder Interface

Mohanty¹

2014

IJIRSET

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ABSTRACT:Internal machining processes, such as boring operation are challenged by inherent tool vibrations. These vibrations can be damped to considerable extent employing suitable arrangement to dissipate part of strain energy. The present research has used a set of metal laminates at the tool and tool holder interface. The arrangement which promotes frictional energy dissipation has resulted in improvement of machinability, measured in terms of Chip reduction Coefficient.

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Section: Introductionmentioning

confidence: 99%

Study of Chip Reduction Coefficient in Boring Operation Using Metal Laminates at the Tool-Holder Interface

Mohanty¹

2014

IJIRSET

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“…This timing requirement (communication latency) may vary from few minutes to few milliseconds depending on the application. Applications like active vibration control in gas turbines used at the power stations impose low latency (milliseconds) real-time communication requirement [6]. Another issue is the reliability of the communication links.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of DECT for low latency real-time industrial control networks

Das

Havinga

2013

2013 IEEE International Workshop of Internet-of-Things Networking and Control (IoT-NC)

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Abstract-Wireless sensor networks (WSNs) have revolutionized the industrial networks by enabling wireless sensing and control to the machine parts where wiring is impossible. However, new challenges in terms of communication reliability and latency, appear with the advances in the industrial wireless control systems. Existing standards are found inadequate to support many of these demanding situations as most of those are based on IEEE 802.15.4 standard, which is unable to provide high communication reliability with low latency (milliseconds). Digital Enhanced Cordless Telecommunications (DECT), a communication standard developed by European Telecommunications Standards Institute (ETSI), seems to support the timing and reliability requirements of modern industrial wireless control networks. In this paper, we evaluate the performance of DECT in various industrial environments and found that it can maintain excellent communication reliability between sensors and control centre with low latency in such scenarios.

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“…Many approaches for active vibration control of mechanical systems depend upon actively changing the stiffness and damping characteristics of the system. An optimal approach of using an active dynamic absorber was proposed by Tewani et al [10] to actively control a lumped mass system. A piezoelectric pusher was used between the main mass and absorber mass to actively change the stiffness and damping characteristics of the system.…”

Section: Introductionmentioning

confidence: 99%

Application of genetic algorithms to active vibration control of a centrifugal pendulum vibration absorber

Liang

Tung

2010

Proceedings of the Institution of Mechanical Engineers, Part I:

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This paper presents a genetic algorithm (GA) controller for the active vibration control of a centrifugal pendulum vibration absorber (CPVA). The genetic algorithm is applied to search for the optimal solution for the regulation of the anti-resonance frequency in an active pendulum vibration absorber (APVA), which is operated by suppressing vibration of the carrier. The dynamic model of the APVA is developed and simulated using MATLAB. The simulation results reveal that the GA controller can find the optimal variables when the excitation frequency varies, to determine an appropriate value for the torque of the active pendulum such that minimizes the amplitude of vibration of the carrier. After the GA process is complete, the search results are cumulatively stored in the knowledge base. The carrier vibration results obtained using the CPVA are compared with those obtained using the GA APVA. The simulation results demonstrate the effectiveness of the proposed GA APVA in reducing carrier vibration.

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Active optimal vibration control using dynamic absorber

Cited by 17 publications

References 6 publications

Study of Chip Reduction Coefficient in Boring Operation Using Metal Laminates at the Tool-Holder Interface

Study of Chip Reduction Coefficient in Boring Operation Using Metal Laminates at the Tool-Holder Interface

Evaluation of DECT for low latency real-time industrial control networks

Application of genetic algorithms to active vibration control of a centrifugal pendulum vibration absorber

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