Control device
US10451180B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2016 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Nov 24, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F2007/1866
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control device that includes an electronic control unit that is configured to: detect an actual current value flowing through the solenoid valve; receive a current command value and the actual current value detected and generate a primary command voltage value while feeding back the current command value on the basis of the actual current value; calculate a dither command voltage value to cause a periodic voltage oscillation; filter the actual current value detected to remove a frequency corresponding to a period of the dither command voltage value and output the filtered actual current value; generate a secondary command voltage value by superimposing the dither command voltage value generated on the primary command voltage value generated; convert the secondary command voltage value generated into a PWM signal; and generate, on the basis of the PWM signal generated, an application voltage to be applied to the solenoid valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.