• Patent Title: Vibration control of systems with configuration dependent dynamics
  • Application No.: US16623142
    Application Date: 2018-07-12
  • Publication No.: US11648666B2
    Publication Date: 2023-05-16
  • Inventor: Dan Kielsholm Thomsen
  • Applicant: Universal Robots A/S
  • Applicant Address: DK Odense S
  • Assignee: UNIVERSAL ROBOTS A/S
  • Current Assignee: UNIVERSAL ROBOTS A/S
  • Current Assignee Address: DK Odense S
  • Agency: Burns & Levinson LLP
  • Priority: EP 181118 2017.07.13
  • International Application: PCT/EP2018/068934 2018.07.12
  • International Announcement: WO2019/012040A 2019.01.17
  • Date entered country: 2019-12-16
  • Main IPC: B25J9/16
  • IPC: B25J9/16
Vibration control of systems with configuration dependent dynamics
Abstract:
A method is provided for vibration suppression, which is useful in systems with configuration dependent dynamic parameters. The method is a general and practical solution for obtaining a set of inputs to a dynamic system, which will result in reduced vibrational behavior. A novel discrete time buffer implementation is employed, which yields reduced vibration due to a constant unity sum of applied impulses. The method includes shaping a position input with a continuously updated filter and using numerical differentiation to obtain consistent feedforward derivatives without phase shift.
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