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:
Jan. 12, 2021
Filed:
Apr. 07, 2020
Meidensha Corporation, Tokyo, JP;
Meidensha Corporation, Tokyo, JP;
Abstract
A low-frequency torque controlleroutputs a low-frequency torque controller output τ* based on a torque command value τ* and a torque detection value τ, and a vibrational torque controlleroutputs a vibrational torque command value τ* based on the torque command value τ*, the torque detection value τ, and a rotational phase detection value θ. Meanwhile, in a high-frequency resonance suppression controller, an inverter torque command value τ* is outputted based on the torque detection value τand a corrected torque command value τ* obtained by adding the low-frequency torque controller output τ* to the vibrational torque command value τ*. The invention thus provides shaft torque vibrational control of a motor drive system wherein engine vibrational torque command values including distortion components are tracked while entirely removing the influence of resonance, non-periodic disturbances, and periodic disturbances.