Method and apparatus for automatic high power tube recovery
First Claim
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1. A method of reducing power to an electron emitting cathode, comprising the steps of:
- a. sensing an operating condition of said electron emitting cathode by sampling a plurality of sensors;
b. calculating a condition number based upon said operating condition, wherein said calculating step further comprises balancing said samples of said plurality of sensors against a plurality of sensor threshold values such that the number of said samples is equal to the number of said plurality of sensor threshold values;
c. comparing said condition number to a threshold value; and
d. reducing power to said electron emitting cathode when said condition number differs from said threshold value by a predetermined amount.
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Abstract
The invention consists, generally, of a method for automatically reducing power to an electron emitting cathode by sensing an operating condition of the electron emitting cathode, calculating a condition number based upon the operating condition, comparing the condition number to a threshold value, and reducing the power to the electron emitting cathode when the condition number is greater than the threshold. The apparatus and method may be implemented upon a system having a high voltage power source, an RF tube, a control processor, and a signal processor.
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Citations
26 Claims
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1. A method of reducing power to an electron emitting cathode, comprising the steps of:
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a. sensing an operating condition of said electron emitting cathode by sampling a plurality of sensors; b. calculating a condition number based upon said operating condition, wherein said calculating step further comprises balancing said samples of said plurality of sensors against a plurality of sensor threshold values such that the number of said samples is equal to the number of said plurality of sensor threshold values; c. comparing said condition number to a threshold value; and d. reducing power to said electron emitting cathode when said condition number differs from said threshold value by a predetermined amount. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling the power to an electron emitting cathode;
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a. a plurality of sensors configured to sense operating conditions of said electron emitting cathode; b. comparators configured to compare said operating conditions to a plurality of sensor threshold values and to output a threshold indicia, and wherein said comparators are further configured to increment said condition number by a unit value when the value of one of said operating conditions from said plurality of sensors is greater than a corresponding value of one of said plurality of sensor threshold values; c. a summing block configured to sum said threshold indicia, said sum of said threshold indicia being a condition number; and d. a power level decision block configured to receive said condition number and to compare said condition number to a threshold value to determine a power level for said electron emitting cathode. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A data structure for controlling the power to an electron emitting cathode, comprising:
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a. a set of operating conditions; b. a set of operating condition thresholds; c. a comparator configured to compare said set of operating conditions to said operating condition thresholds, said comparator further configured to output a threshold indicia vector, and wherein said comparator is further configured to increment said condition number by a unit value when a value of one element of said set of operating conditions is greater than a corresponding value of one element of said set of operating condition thresholds; d. a summing block configured to sum said threshold indicia vector, said sum being a condition number; and e. a power level decision block configured to receive said condition number and to compare said condition number to a threshold to determine a power level for said electron emitting cathode. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification