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:
Apr. 16, 2024
Filed:
Nov. 19, 2019
Mechano Transformer Corporation, Tokyo, JP;
MECHANO TRANSFORMER CORPORATION, Tokyo, JP;
Abstract
To provide a valve control device, a drive control device, and a fluid control device, which are suitable for adjusting a valve. The valve control device comprises: a rod-shaped rotor provided so as to rotate about a rotation axis, wherein one end of the rotor is directly or indirectly connected to a valve body, at least a part of the valve body being positioned in a flow path for fluid, wherein the rotor changes a relative position between the valve body and a valve seat that is closed by the valve body or a contact force between the valve body and the valve seat; a pair of contacts for sandwiching the rotor and for rotating the rotor; a moving unit comprising a piezoelectric element for causing the pair of contacts to perform relative movement; and a drive control unit for controlling the relative position between the valve body and the valve seat or the contact force between the valve body and the valve seat by applying a voltage waveform having a rising slope and a falling slope different from the rising slope to the piezoelectric element so as to cause the pair of contacts to rotate the rotor in a desired direction, wherein a steeper slope of the rising slope and the falling slope causes a slip between the rotor and the pair of contacts.