Power supply adjustment method, power supply apparatus, portable component and magnetic resonance device

A power supply apparatus for a portable component of a magnetic resonance device, comprising:

• a PWM signal generator configured to provide a PWM signal, a duty cycle of the PWM signal being preset to a fixed value;
• an input signal processor configured to perform PWM processing on an input signal to determine a first modulation signal based on the PWM signal;
• a first filter, an input terminal of the first filter being connected to the input signal processor, and the first filter being configured to perform first filtering processing on the first modulation signal to obtain a second modulation signal;
• a feedback loop having an integration loop and configured to adjust the duty cycle of the PWM signal, wherein the first modulation signal or the second modulation signal is used as input of the feedback loop;
• and
• a linear regulator, an input terminal of the linear regulator being connected to an output terminal of the first filter, and the linear regulator being configured to perform linear adjustment processing on the second modulation signal to determine a target signal and provide the target signal as an output of the linear regulator, the target signal to the portable component to supply power to the portable component of the magnetic resonance device.

A portable component used in a magnetic resonance device, comprising:

• a component body configured to receive a detection signal;
• and
• the power supply apparatus connected to the component body to supply power to the component body, the power supply apparatus being configured to:
• provide a pulse-width modulation (PWM) signal, a duty cycle of the PWM signal being preset to a fixed value;
• perform PWM processing on an input signal, based on the PWM signal, to determine a first modulation signal;
• filter the first modulation signal to determine a second modulation signal;
• adjust the duty cycle of the PWM signal based on a feedback loop having an integration loop, wherein the first modulation signal or the second modulation signal is used as input of the feedback loop;
• and
• perform linear adjustment processing on the second modulation signal to generate a target signal, wherein the power supply apparatus is configured to provide the target signal to the component body to supply power tot the component body of the portable component used in the magnetic resonance device.