| 主权项 |
1. An apparatus, comprising:
a generator including a control module and a feedback module, the feedback module operatively coupled to the control module, the generator operably coupled to a power module configured to produce an electronic signal to be received by an ultrasonic energy delivery assembly that is characterized by a natural frequency, the electronic signal characterized by a frequency, the feedback module configured to produce a feedback signal, the feedback signal associated with a nominal component of the electronic signal produced by the power module, the control module configured to receive a noise signal associated with a noise component of the electronic signal produced by the power module, the control module configured to determine the natural frequency based on the feedback signal, the control module configured to send a control signal, based at least in part on the noise signal, to the power module to randomly vary the frequency of the electronic signal within a range defined at least in part by the natural frequency. |
