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An ultrasonic levitation journal bearing able to control spindle center position.

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : An ultrasonic levitation journal bearing able to control spindle center position.
นักวิจัย : Zhao, Su. , Mojrzisch, Sebastian. , Wallaschek, Joerg.
คำค้น : DRNTU::Engineering::Mechanical engineering::Control engineering.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Zhao, S., Mojrzisch, S., & Wallaschek, J. (2012). An ultrasonic levitation journal bearing able to control spindle center position. Mechanical systems and signal processing, 36(1), 168-181. , 0888-3270 , http://hdl.handle.net/10220/17538 , http://dx.doi.org/10.1016/j.ymssp.2012.05.006
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Mechanical systems and signal processing
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

A novel active non-contact journal bearing based on squeeze film levitation is presented. Two qualities distinguish the proposed design from the previous ones: significantly improved load capacity and the ability of precision spindle position control. Theoretical models to calculate load carrying forces induced by squeeze film ultrasonic levitation are studied and validated by experimental results. Dynamic behavior of the ultrasonic transducer is investigated using electro-mechanical equivalent circuit model. Levitation forces generated by each transducer are individually controlled by a state feedback controller with auto-resonant (self-excited) frequency control. Active control of the spindle center position is achieved with positioning accuracy of the spindle center in the range of 100 nm. The load capacity achieved by the proposed bearing is dramatically improved compared to previously reported approaches.

บรรณานุกรม :
Zhao, Su. , Mojrzisch, Sebastian. , Wallaschek, Joerg. . (2555). An ultrasonic levitation journal bearing able to control spindle center position..
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhao, Su. , Mojrzisch, Sebastian. , Wallaschek, Joerg. . 2555. "An ultrasonic levitation journal bearing able to control spindle center position.".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhao, Su. , Mojrzisch, Sebastian. , Wallaschek, Joerg. . "An ultrasonic levitation journal bearing able to control spindle center position.."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Zhao, Su. , Mojrzisch, Sebastian. , Wallaschek, Joerg. . An ultrasonic levitation journal bearing able to control spindle center position.. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.