Patent ID: 11934209
Assignee: ALCON INC.
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 7:
8. A vacuum generation system, comprising:
a first proportional-integral-derivative (PID) controller, configured to:
receive a first error between a vacuum pressure sensor reading associated with a vacuum generator and a vacuum pressure set point; and
calculate a first voltage level based on the first error;

a second PID controller, configured to:
receive a second error between a supply air pressure sensor reading and a supply air pressure set point; and
calculate a second voltage level based on the second error;

a minimum control effort analyzer, configured to:
determine a lower voltage level between the first and the second voltage levels; and
relay the lower voltage level to a proportional valve;

the proportional valve, configured to:
cause supply air pressure to be provided to a vacuum generator based on the lower voltage level; and

the vacuum generator, configured to:
provide vacuum pressure based on the supply air pressure to a surgical tool.