Phase control device and method for multi-resonance system
AssigneeMicrosoft Technology Licensing, LLC
InventorsChuan Pu, Wenjun Liao
Life of this patent
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Abstract
A resonance system is disclosed, which includes a first resonance device configured to receive a drive signal and generate an output signal, a second resonance device configured to receive a control signal and generate the drive signal based on the received control signal, and a controller configured to generate the control signal based on the output signal such that a phase difference between the control signal applied to the second resonance device and the output signal of the first resonance device corresponds to a predetermined phase shift value.
Claims20
A resonance system comprising:
- a first resonance device configured to receive a drive signal and generate an output signal;
- a second resonance device configured to receive a control signal and generate the drive signal based on the received control signal;
- and
- a controller configured to generate the control signal based on the output signal such that a phase difference between the control signal applied to the second resonance device and the output signal of the first resonance device corresponds to a predetermined phase shift value.
A controller for a resonance system, the controller comprising:
- a phase-locked loop (PLL) configured to output a control signal;
- and
- a processor configured to control the PLL based on the control signal output from the PLL and an output signal received from a first resonance device,
- wherein the first resonance device is driven by a drive signal generated by a second resonance device based on the control signal,
- wherein the processor is configured to control the PLL to adjust a phase difference between the control signal and the output signal of the first resonance device to correspond to a predetermined phase shift value.
A method of controlling a resonance system, the method comprising:
- receiving an output signal from a first resonance device, the output signal including oscillation information of the first resonance device;
- generating a control signal based on the received output signal;
- supplying the generated control signal to a second resonance device configured to generate a drive signal for driving the first resonance device based on the control signal;
- determining a phase difference between the control signal and the output signal of the first resonance device;
- and
- adjusting the phase difference to correspond to a predetermined phase shift.
Dependencies are inferred from the claim text.