Abstract
Having good control over the speed and direction of non-contact transportation is critical in industry today, especially in areas such as the manufacturing of flat panel displays, silicon wafers of semi-silicon and a number of other electronic devices. In a dual transducer-type ultrasonic levitation-based transportation system, it is well known that the vibrating plate length and the wavelength of the flexural vibration should satisfy a strict relationship, i.e. one given by the spatial phase difference, ϕ, so that the transportation process could be as fast as possible and therefore most effective for industry. However, it is difficult to obtain the value of ϕ through calculation, or through making adjustments during the operation of the transportation process. In this paper, the relationship across the temporal phase shift, θ, the spatial phase difference, ϕ, and the Standing Wave Ratio (SWR), which directly controls the speed and direction of the transportation system, was derived by the authors for the first time. Subsequently, experimental solutions for the measurement of ϕ were obtained in this work, using a Laser Doppler Vibrometer-based approach (LDV) and as a result, the research has been successful in giving results for ϕ, through the series of experiments carried out and reported.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
