Method of tuning a haptic actuator including ferromagnetic mass change iterations and related apparatus

A method of tuning a haptic actuator comprising a housing, at least one coil carried by the housing, and a field member movable within the housing responsive to the at least one coil and having a ferromagnetic mass, the haptic actuator operative as a resonator and having an initial quality (Q) factor, the method comprising:

• determining whether the initial Q factor is within a desired Q factor range;
• and
• when the initial Q factor is not within the desired Q factor range, performing at least one ferromagnetic mass change iteration until an updated Q factor is within the desired Q factor range, the at least one ferromagnetic mass change iteration comprising
• changing, using a mass changing device, the ferromagnetic mass of the field member,
• determining the updated Q factor of the haptic actuator based upon changing the ferromagnetic mass of the field member, and
• determining whether the updated Q factor is within the desired Q factor range.

An apparatus for tuning a haptic actuator comprising a housing having an initial ferromagnetic mass, at least one coil carried by the housing, and a field member movable within the housing responsive to the at least one coil, the haptic actuator operative as a resonator and having an initial quality (Q) factor, the apparatus comprising:

• at least one sensor;
• a mass changing device;
• and
• a controller capable of
• cooperating with the at least one sensor to determine whether the initial Q factor is within a desired Q factor range, and
• when the initial Q factor is not within the desired Q factor range, performing at least one ferromagnetic mass change iteration until an updated Q factor is within the desired Q factor range, the at least one ferromagnetic mass change iteration comprising
• cooperating with the mass changing device to change the ferromagnetic mass of the housing,
• cooperating with the at least one sensor to determine the updated Q factor of the haptic actuator based upon changing the ferromagnetic mass of the housing, and
• determining whether the updated Q factor is within the desired Q factor range.

An apparatus for tuning a haptic actuator comprising a housing having an initial ferromagnetic mass, at least one coil carried by the housing, and a field member movable within the housing responsive to the at least one coil, the haptic actuator operative as a resonator and having an initial quality (Q) factor, the apparatus comprising:

• at least one sensor;
• a mass changing device;
• and
• a controller capable of
• cooperating with the at least one sensor to determine whether the initial Q factor is within a desired Q factor range, and
• when the initial Q factor is not within the desired Q factor range, performing at least one ferromagnetic mass change iteration until an updated Q factor is within the desired Q factor range, the at least one ferromagnetic mass change iteration comprising
• cooperating with the mass changing device to change the ferromagnetic mass of the field member,
• cooperating with the at least one sensor to determine the updated Q factor of the haptic actuator based upon changing the ferromagnetic mass of the field member, and
• determining whether the updated Q factor is within the desired Q factor range.