Power supply control apparatus
First Claim
1. A power supply control apparatus comprising:
- a first adder configured to generate a difference signal based on a target value and a feedback signal;
a compensator having a first transfer function Wc(z) and configured to generate a control signal based on the difference signal;
a control target having a second transfer function Wp(z) and configured to output an output signal generated in response to said control signal;
a disturbance canceller having a third transfer function {1+Wc(z)·
Wp(z)}/{Wc(z)·
Wp(z)} and configured to generate a disturbance cancelling signal based on the output signal corresponding to a control amount y;
a second adder configured to generate a differential disturbance signal based on an output of said first adder and the disturbance cancelling signal; and
a filter circuit having a fourth transfer function K(z) and configured to generate the feedback signal based on the differential disturbance signal,wherein said compensator receives the difference signal and the output signal and carries out a compensating operation based on the difference signal and the output signal such that the control amount y becomes equal to the target value, andwherein said power supply control apparatus further comprises;
a step-down DC-DC (direct current to direct current) converter configured to input said control signal, generate an output voltage based on the inputted control signal and output the generated output voltage as said output signal,an A/D (analog to digital) converter configured to receive said output voltage as said output signal, convert the received output voltage into a digital code and output the converted digital code; and
a controller configured to receive said digital code, generate a control output in response to the inputted digital code and output said control output as said control signal.
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Accused Products
Abstract
A power supply control apparatus includes a first adder configured to generate a difference signal based on a target value and a feedback signal; a compensator having a first transfer function Wc(z) and configured to generate a control signal based on the difference signal; a control target having a second transfer function Wp(z) and configured to output an output signal generated in response to the control signal; a disturbance canceller having a third transfer function {l+Wc(z)·Wp(z)}/{Wc(z)·Wp(z)} and configured to generate a disturbance cancelling signal based on the output signal corresponding to a control amount y; a second adder configured to generate a differential disturbance signal based on an output of the first adder and the disturbance cancelling signal; and a filter circuit which generates the feedback signal based on the differential disturbance signal.
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Citations
7 Claims
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1. A power supply control apparatus comprising:
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a first adder configured to generate a difference signal based on a target value and a feedback signal; a compensator having a first transfer function Wc(z) and configured to generate a control signal based on the difference signal; a control target having a second transfer function Wp(z) and configured to output an output signal generated in response to said control signal; a disturbance canceller having a third transfer function {1+Wc(z)·
Wp(z)}/{Wc(z)·
Wp(z)} and configured to generate a disturbance cancelling signal based on the output signal corresponding to a control amount y;a second adder configured to generate a differential disturbance signal based on an output of said first adder and the disturbance cancelling signal; and a filter circuit having a fourth transfer function K(z) and configured to generate the feedback signal based on the differential disturbance signal, wherein said compensator receives the difference signal and the output signal and carries out a compensating operation based on the difference signal and the output signal such that the control amount y becomes equal to the target value, and wherein said power supply control apparatus further comprises; a step-down DC-DC (direct current to direct current) converter configured to input said control signal, generate an output voltage based on the inputted control signal and output the generated output voltage as said output signal, an A/D (analog to digital) converter configured to receive said output voltage as said output signal, convert the received output voltage into a digital code and output the converted digital code; and a controller configured to receive said digital code, generate a control output in response to the inputted digital code and output said control output as said control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification