The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2026
Filed:
Mar. 14, 2024
Abb Schweiz Ag, Baden, CH;
ABB SCHWEIZ AG, Baden, CH;
Abstract
A method of identifying parameters of a motor system having an electric motor and a control system for vibration reduction, includes: sweeping a frequency of an oscillating reactive torque injected into the motor, determining a natural frequency of the motor system, which is the frequency at which the reactive torque produces maximum amplitude of a vibration-related parameter obtained based on measurements, incrementally increasing a magnitude of reactive torque oscillating at the natural frequency, injected to the motor, obtaining a magnitude of the parameter for each magnitude of the reactive torque, and determining, for each magnitude of the reactive torque, a gain and a phase response of the motor system, the gain being based on the magnitude of the reactive torque and the corresponding magnitude of the parameter, and the phase response being based on a phase angle of the reactive torque and a phase angle of the corresponding parameter.