State machine controller for operating variable air volume terminal units of an environmental control system
US6219590A · kind A · utility
104Cited by
10References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1998 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Apr 3, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/2638
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention provides a sequencing control strategy for environmental system controllers that takes better advantage of the capabilities of the system elements to enhance performance and reduce operating costs. A state machine controller is implemented by employing digital technology which enables greater accuracy in monitoring system performance and performing diagnostics. This control modality also provides greater tolerance of faults by permitting automatic reconfiguration of the control strategy so as to be independent of malfunctioning components.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.