Controlling devices using cascaded control units

Details Controlling devices using cascaded control units Controlling devices using cascaded control units

2006-11-14

2006-11-14

Picard, Leo (Department: 2121)

Electrical transmission or interconnection systems

Plural supply circuits or sources

C307S041000, C307S038000, 30, C700S008000

Reexamination Certificate

active

07135789

ABSTRACT:
Power supplies, supplied with an input voltage to produce output voltages, are controlled in a desired sequence, and their output voltages are monitored, by respective state machines of two or more control units which are coupled in cascade by a bidirectional signal path on which commands and acknowledgements are coupled serially in frames. Within each control unit, each state machine communicates with all of the other state machines, so that the power supplies controlled by a single control unit can include divergent and convergent as well as linear sequence paths. The sequence is linear between adjacent control units, with logical combinations of received and locally-produced commands and acknowledgements. An input state machine in the first control unit in the cascade monitors the input voltage to initiate a power-up sequence.

REFERENCES:
patent: 4799141 (1989-01-01), Drusinsky et al.
patent: 5097437 (1992-03-01), Larson
patent: 6374144 (2002-04-01), Viviani et al.
patent: WO 02/31951 (2000-10-01), None

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