High Torque Density Cycloid Electrical Machine for Robotic Application Public Deposited

http://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/wm117t864

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  • This thesis investigates a novel cycloid electric machine that integrates both cycloid gear drive and permanent magnet synchronous machine (PMSM), and proposes to apply the machine in robotic transmission system. Cycloid gear drive is a transmission device that is commonly used to boost up the output torque. It has been widely applied in many industrial applications including ship power transmission, robotic actuation, hybrid electric vehicle and renewable energy due to advantages of high mechanical efficiency, low backlash, compact size and high ratio mechanical transmission. The structure of cycloid gear is different from common gears which engage externally, it engages internally and operates in cycloidal motion. In robotic industry, requirements on compact size and high transmission ratio result in the application of cycloid gear drives. Chapter 2 would introduce it in detail. Synchronous electric machine has been widely applied and investigated for more than a century. In industry, synchronous machines are used for power generating, electric power drive and many other electro-mechanical transformations. In particular, permanent magnet synchronous machine (PMSM) is the most common one because the control strategy is relatively simple with the help of booming power electronics. Commonly, PMSM is used as mechanical power input in robotic industry. Chapter 3 would elaborate it. Typical human-sized legged locomotion needs an output torque around 300 N∙m to accomplish motions. The direct drive design uses only one high-torque electric machine with multi-stage transmission cannot meet the size and weight requirement of the leg actuation. This research proposes a novel cycloid electric machine to replace the conventional motor transmission system. An estimated 40 percent size and weight reduction is expected [19].
  • This thesis investigates a novel cycloid electric machine that integrates both cycloid gear drive and permanent magnet synchronous machine (PMSM)
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  • description.provenance : Made available in DSpace on 2017-07-11T20:53:09Z (GMT). No. of bitstreams: 2 LiuRui2017.pdf: 2785952 bytes, checksum: f76653169e46ab414dc8d225f4ad467c (MD5) license_rdf: 1536 bytes, checksum: df76b173e7954a20718100d078b240a8 (MD5)
  • description.provenance : Rejected by Julie Kurtz(julie.kurtz@oregonstate.edu), reason: Hi Rui, Rejecting because you uploaded a word doc and it needs to be a PDF. Also the commencement date on the bottom of the title page should be changed to read - Commencement June 2018. Everything else looks good. Once revised, log back into ScholarsArchive and go to the upload page. Replace the attached file with the revised PDF and resubmit. Thanks, Julie on 2017-07-06T21:03:51Z (GMT)
  • description.provenance : Approved for entry into archive by Steven Van Tuyl(steve.vantuyl@oregonstate.edu) on 2017-07-11T20:53:09Z (GMT) No. of bitstreams: 2 LiuRui2017.pdf: 2785952 bytes, checksum: f76653169e46ab414dc8d225f4ad467c (MD5) license_rdf: 1536 bytes, checksum: df76b173e7954a20718100d078b240a8 (MD5)
  • description.provenance : Submitted by Rui Liu (liur@oregonstate.edu) on 2017-07-06T21:58:37Z No. of bitstreams: 2 LiuRui2017.pdf: 2785952 bytes, checksum: f76653169e46ab414dc8d225f4ad467c (MD5) license_rdf: 1536 bytes, checksum: df76b173e7954a20718100d078b240a8 (MD5)
  • description.provenance : Submitted by Rui Liu (liur@oregonstate.edu) on 2017-07-03T23:34:25Z No. of bitstreams: 2 license_rdf: 1536 bytes, checksum: df76b173e7954a20718100d078b240a8 (MD5) LiuRui2017.docx: 7222974 bytes, checksum: 58e8d13bb0c48bd0422637d7bcb6c9c3 (MD5)
  • description.provenance : Approved for entry into archive by Julie Kurtz(julie.kurtz@oregonstate.edu) on 2017-07-06T22:22:22Z (GMT) No. of bitstreams: 2 LiuRui2017.pdf: 2785952 bytes, checksum: f76653169e46ab414dc8d225f4ad467c (MD5) license_rdf: 1536 bytes, checksum: df76b173e7954a20718100d078b240a8 (MD5)

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