An Acousto-Optic Vibrometer for Measurement of Vibration in Ultra-Precision Machine Tools

Ngoi, B. K. A.; Venkatakrishnan, Krishnan

doi:10.1007/s001700070017

Cited by 11 publications

(6 citation statements)

References 3 publications

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“…So, the maximum distance is 1.70 cm. [1], [2], [3], [4] 3 The Hardware System Architecture The hardware of the vibration measurement system consists of two ultrasonic transducers, for transmitting and receiving the signals, and the circui for ultrasonic transmitting and receiving signal processing. The part completes signal acquisition and processing function automatically.…”

Section: Fig 1 Schematic Diagram Of Ultrasonic System For Vibrationmentioning

confidence: 99%

Application of Interferometry in Ultrasonic System for Vibration

Liu

She

Liu

2011

Computer and Computing Technologies in Agriculture IV

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Abstract. Vibration signals are important state parameters for mechanical equipments' status monitoring and fault diagnosis. In this paper, in order to overcome the limitations of the traditional vibration measurement med1ods and instrument, a new non-contacting vibration method based on ultrasonic for vibration detection in special environment was presented. The mainly researched in this paper were the circuit for ultrasonic transmitting, receiving, algorithm and the module based on LabVIEW for signal analysis and processing. New algorithm was adopted in the system design. The measurement for vibration signals, which may have higher accuracy, was based on ultrasonic wave of different frequency. Experiments were carried on for proving the theory and the result was expected, verifying the reliability and feasibility of the system.

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Section: Fig 1 Schematic Diagram Of Ultrasonic System For Vibrationmentioning

confidence: 99%

Application of Interferometry in Ultrasonic System for Vibration

Liu

She

Liu

2011

Computer and Computing Technologies in Agriculture IV

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“…In 1998, Ngoi et al presented an acoustooptic vibrometer with two acousto-optic movemeters and Doppler Effect, by which two-dimensional error could be obtained. The bandwidth and resolution of Downloaded by [York University Libraries] at 18:18 17 November 2014 this system were respectively 10-2500 Hz and 26.2 nm (Ngoi and Venkatakrishnan, 2000). In 2000, Ivaschescu et al presented a nano-vibrometer which was composed of a Michelson interferometer (Ivaschescu, 2000).…”

Section: Introductionmentioning

confidence: 98%

The development of A 3‐dimensional vibration measuring system with corner cubes and quadrant detectors(Invited)

Chen

Jywe

Hsieh

et al. 2010

Journal of the Chinese Institute of Engineers

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2010) The development of A 3-dimensional vibration measuring system with corner cubes and quadrant detectors (Invited) , Journal of the Chinese Institute of Engineers, 33:1, 71-80, ABSTRACTIn this paper, a new optical 3-dimensional vibrometer is presented. This system is composed of two orthogonally set up corner cubes (CC), a collimated laser source, two quadrant detectors (QD) and three beam-splitters (BS). The corner cubes are designed to be fixed to the vibrating object and reflect the laser source onto the quadrant detectors. Due to the optical characteristics of the corner cubes, the measuring results of the QD can be magnified twice and it is not affected by micrometer-angle. So, the three-dimensional vibration amplitude can be obtained. The resolution is about 50 nm. This system is characterized by three-dimensional measurement, high resolution, low cost, simple set up and wide bandwidth.

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“…Ngoi and Venkatakrishnan (2000) provide a technique for measurement of vibration using an acousto-optic modulator for improving vibration measurement in the subnanometre range with a laser Doppler vibrometer. It is mentioned that the technique can be used for application to a precision machine tool to measure the vibration on the machine bed induced during the machining process and by the external Monitoring of machine tool vibrations is an important aspect of precision manufacturing industry.…”

Section: Introductionmentioning

confidence: 99%