Temperature control of multi-stage cryocooler with load shifting capabilities
US10060655B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2014 |
| Grant date | Aug 28, 2018 |
| Priority date | — |
| Expiry date | Sep 1, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/20
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
A system includes a multi-stage cryocooler having multiple stages and a temperature control system configured to regulate temperatures of the multiple stages of the multi-stage cryocooler. The temperature control system includes an input interface configured to receive (i) temperature setpoints for the stages of the multi-stage cryocooler and (ii) temperature information corresponding to temperatures measured at the stages of the multi-stage cryocooler. The temperature control system also includes processing circuitry configured to determine temperature errors and calculate at least one of a compressor stroke error and a pressure-volume phase error. The temperature control system further includes at least one controller configured to adjust at least one of a compressor setting and a pressure-volume phase of the multi-stage cryocooler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.