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Laser-self-mixing interferometry for mechatronics applications.

Ottonelli S, Dabbicco M, De Lucia F, di Vietro M, Scamarcio G - Sensors (Basel) (2009)

Bottom Line: We report on the development of an all-interferometric optomechatronic sensor for the detection of multi-degrees-of-freedom displacements of a remote target.The prototype system exploits the self-mixing technique and consists only of a laser head, equipped with six laser sources, and a suitably designed reflective target.The feasibility of the system was validated experimentally for both single or multi-degrees-of-freedom measurements, thus demonstrating a simple and inexpensive alternative to costly and bulky existing systems.

View Article: PubMed Central - PubMed

Affiliation: Dipartimento Interateneo di Fisica "M. Merlin", Università di Bari, and CNR-INFM Laboratorio Regionale "LIT3", Via Amendola 173, I-70126, Bari, Italy; E-Mails: dabbicco@fisica.uniba.it ; delucia@fisica.uniba.it ; divietro@fisica.uniba.it ; scamarcio@fisica.uniba.it.

ABSTRACT
We report on the development of an all-interferometric optomechatronic sensor for the detection of multi-degrees-of-freedom displacements of a remote target. The prototype system exploits the self-mixing technique and consists only of a laser head, equipped with six laser sources, and a suitably designed reflective target. The feasibility of the system was validated experimentally for both single or multi-degrees-of-freedom measurements, thus demonstrating a simple and inexpensive alternative to costly and bulky existing systems.

No MeSH data available.


Measurement error for (a) linear displacement, (b) yaw and pitch rotations, (c) transverse displacement, and (d) roll rotations. The theoretical accuracy estimated for the maximum displacements performed is approximately 11 μm for linear displacement, ± 70 μm for transverse displacement, ± 3 × 10-3° for yaw and pitch, and ± 5 × 10-2° for roll.
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f11-sensors-09-03527: Measurement error for (a) linear displacement, (b) yaw and pitch rotations, (c) transverse displacement, and (d) roll rotations. The theoretical accuracy estimated for the maximum displacements performed is approximately 11 μm for linear displacement, ± 70 μm for transverse displacement, ± 3 × 10-3° for yaw and pitch, and ± 5 × 10-2° for roll.

Mentions: The errors for each DOF, evaluated as the difference between the values measured by the SMIs and those given by the reference meter, are reported in Figure 11 and are within the theoretical accuracy estimated by means of equation (12).


Laser-self-mixing interferometry for mechatronics applications.

Ottonelli S, Dabbicco M, De Lucia F, di Vietro M, Scamarcio G - Sensors (Basel) (2009)

Measurement error for (a) linear displacement, (b) yaw and pitch rotations, (c) transverse displacement, and (d) roll rotations. The theoretical accuracy estimated for the maximum displacements performed is approximately 11 μm for linear displacement, ± 70 μm for transverse displacement, ± 3 × 10-3° for yaw and pitch, and ± 5 × 10-2° for roll.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3297133&req=5

f11-sensors-09-03527: Measurement error for (a) linear displacement, (b) yaw and pitch rotations, (c) transverse displacement, and (d) roll rotations. The theoretical accuracy estimated for the maximum displacements performed is approximately 11 μm for linear displacement, ± 70 μm for transverse displacement, ± 3 × 10-3° for yaw and pitch, and ± 5 × 10-2° for roll.
Mentions: The errors for each DOF, evaluated as the difference between the values measured by the SMIs and those given by the reference meter, are reported in Figure 11 and are within the theoretical accuracy estimated by means of equation (12).

Bottom Line: We report on the development of an all-interferometric optomechatronic sensor for the detection of multi-degrees-of-freedom displacements of a remote target.The prototype system exploits the self-mixing technique and consists only of a laser head, equipped with six laser sources, and a suitably designed reflective target.The feasibility of the system was validated experimentally for both single or multi-degrees-of-freedom measurements, thus demonstrating a simple and inexpensive alternative to costly and bulky existing systems.

View Article: PubMed Central - PubMed

Affiliation: Dipartimento Interateneo di Fisica "M. Merlin", Università di Bari, and CNR-INFM Laboratorio Regionale "LIT3", Via Amendola 173, I-70126, Bari, Italy; E-Mails: dabbicco@fisica.uniba.it ; delucia@fisica.uniba.it ; divietro@fisica.uniba.it ; scamarcio@fisica.uniba.it.

ABSTRACT
We report on the development of an all-interferometric optomechatronic sensor for the detection of multi-degrees-of-freedom displacements of a remote target. The prototype system exploits the self-mixing technique and consists only of a laser head, equipped with six laser sources, and a suitably designed reflective target. The feasibility of the system was validated experimentally for both single or multi-degrees-of-freedom measurements, thus demonstrating a simple and inexpensive alternative to costly and bulky existing systems.

No MeSH data available.