Data processing: generic control systems or specific application – Specific application – apparatus or process – Mechanical control system
Reexamination Certificate
2006-01-18
2008-07-15
Von Buhr, M. N. (Department: 2121)
Data processing: generic control systems or specific application
Specific application, apparatus or process
Mechanical control system
C165S267000
Reexamination Certificate
active
07400942
ABSTRACT:
The present invention controls a room temperature by controlling an environmental control unit. A total span about a setpoint temperature is adjusted in accordance with a previous total span and a multiplicative factor. The multiplicative factor is periodically updated from a desired cycle time and a previous cycle time. The room temperature may also be controlled by adjusting a duty cycle for controlling an environmental control unit. The duty cycle is adjusted based on an error associated with a previous control cycle and an attenuation factor. A new control cycle may be started by cutting the previous control cycle or a current control cycle may be extended if a predetermined condition is detected. The control mode is selected based on environmental characteristics and room characteristics. The control mode may include a span control mode and a duty cycle control mode that is selected from the cycle rate.
REFERENCES:
patent: 4270693 (1981-06-01), Hayes
patent: 4292813 (1981-10-01), Paddock
patent: 4333519 (1982-06-01), Shafrir et al.
patent: 4356962 (1982-11-01), Levine
patent: 4362924 (1982-12-01), Story et al.
patent: 4387763 (1983-06-01), Benton
patent: 4460123 (1984-07-01), Beverly
patent: 4694890 (1987-09-01), Zarate
patent: 4725001 (1988-02-01), Carney et al.
patent: 4753388 (1988-06-01), Rummage
patent: 4759498 (1988-07-01), Levine et al.
patent: 4787555 (1988-11-01), Newell, III et al.
patent: 4817705 (1989-04-01), Levine et al.
patent: 4901918 (1990-02-01), Grald et al.
patent: 5192020 (1993-03-01), Shah
patent: 5613369 (1997-03-01), Sato et al.
patent: 6038871 (2000-03-01), Gutierrez et al.
patent: 6179213 (2001-01-01), Gibino et al.
patent: 6478084 (2002-11-01), Kumar et al.
patent: 6622500 (2003-09-01), Archibald et al.
patent: 6622926 (2003-09-01), Sartain et al.
patent: 6829523 (2004-12-01), Hanson
patent: 1489368 (2004-12-01), None
Partial European Search Report for EP 07 25 0147, dated Apr. 9, 2008, pp. 1-3.
Banner & Witcoff , Ltd.
Buhr M. N. Von
Computime, Ltd.
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