Valve control device, drive control device, and fluid control device
US11959559B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 19, 2019 |
| Grant date | Apr 16, 2024 |
| Priority date | — |
| Expiry date | Jul 26, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02N2/0075
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
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 s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.