Patent attributes
A haptic actuator features magnets coupled to an enclosure and a movable mass with a conduction loop coupled to the enclosure via one or more movement elastic members. One or more conduction elastic members may be used to transmit signals to the conduction loop to cause the movable mass to move bilinearly relative to the enclosure and the magnets. The magnets may consist of a Halbach array to direct magnetic flux toward the conduction loop and away from other device components. Ferrofluid may be included between one or more of the magnets and the conduction loop to act as a damper in the system to improve haptic feedback. Closed loop control, such as back EMF, capacitive sensing, and magnetic sensing, may be included to improve system response.
