Abstract
In implementations of the disclosure, the elastic energy is recovered from a spring of a VCM. There may be a low mechanical damping and friction of the VCM design that reduces the energy waste while using the VCM regenerative mode as a magnetic damper. The recovered energy can be stored temporarily and used to drive the actuator again when needed (short term energy recovery and storage). An energy recovery circuit, such as a rectifier circuit, can be retrofitted to the existing VCM driver or integrated in a new VCM driver. The recovered energy can be sent back to the battery for future usage (long term energy recovery and storage). A regenerative VCM actuator controller may optimize the trajectory of the actuator that can balance the energy recovery and VCM actuator driving speed and performance. These features may reduce overall power consumption and reduce heat generation of devices.
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Recommended Citation
"REGENERATIVE VOICE COIL", Technical Disclosure Commons, (April 30, 2025)
https://www.tdcommons.org/dpubs_series/8054