Methods and apparatus to control injection for frequency response measurement
AssigneeTexas Instruments Incorporated
InventorManish Bhardwaj
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Abstract
Methods, apparatus, systems and articles of manufacture to control injection for frequency response measurement. An example method includes calculating a gain of a circuit. The gain is calculated based on a measured response of the circuit to a first disturbance injected at a first frequency. A second frequency at which a second disturbance is to be injected into the circuit is identified. An amplitude at which the second disturbance is to be injected into the circuit at the second frequency is calculated. The amplitude calculated based on a measurement noise and the gain of the circuit at the first frequency. The second disturbance is injected into the circuit using the second frequency and the amplitude.
Claims22
A tangible non-transitory machine-readable storage device comprising instructions which, when executed, cause a machine to at least:
- calculate a gain of a circuit of a digitally controlled power converter, the gain calculated based on a measured response of the circuit to a first disturbance injected at a first frequency;
- identify a second frequency at which a second disturbance is to be injected into the circuit, the second frequency different from the first frequency;
- calculate an amplitude at which the second disturbance is to be injected into the circuit at the second frequency, the amplitude calculated based on a measurement noise value and the gain of the circuit at the first frequency;
- and
- inject the second disturbance into the circuit using the second frequency and the amplitude.
A method to control an injection for a frequency response measurement, the measurement comprising:
- calculating a gain of a circuit of a digitally controlled power converter, the gain calculated based on a measured response of the circuit to a first disturbance injected at a first frequency;
- identifying a second frequency at which a second disturbance is to be injected into the circuit, the second frequency different from the first frequency;
- calculating, by executing an instruction with a processor, an amplitude at which the second disturbance is to be injected into the circuit at the second frequency, the amplitude calculated based on a measurement noise and the gain of the circuit at the first frequency;
- and
- injecting the second disturbance into the circuit using the second frequency and the amplitude.
An apparatus to control injection for frequency response measurement, the apparatus comprising:
- an injection controller to calculate a plant gain of a circuit of a digitally controlled power converter, the plant gain calculated based on a measured response of the circuit to a first disturbance injected at a first frequency;
- a frequency controller to identify a second frequency at which a second disturbance is to be injected into the circuit, the second frequency different from the first frequency;
- an amplitude controller to calculate an amplitude at which the second disturbance is to be injected into the circuit at the second frequency, the amplitude calculated based on a measurement noise and the plant gain of the circuit at the first frequency;
- and
- a disturbance injector to inject the second disturbance into the circuit using the second frequency and the amplitude.
Dependencies are inferred from the claim text.