Systems, devices, and methods for providing actuator braking
AssigneeImmersion Corporation
InventorsMajid Sheikholeslami, Peyman Karimi Eskandary, Vahid Khoshkava, Jamal Saboune
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Abstract
Systems, methods, and devices for control of actuators are provided. In aspects, the systems, methods, and devices provided herein enable the generation of sharp cutoff haptic effects of both limited and extended duration. The systems, methods, and devices use open loop braking signals to generate the sharp cutoff haptic effects. The braking signals are determined based on predictions of system response made according to driving signals used to cause the haptic effects in the actuators. Numerous other aspects are provided.
Claims20
A haptically enabled device, comprising:
- an actuator;
- a control circuit configured to control the actuator to produce a haptic effect by:
- providing a driving signal associated with an amplitude, a frequency, and a number of peaks or a number of oscillation half-cycles to the actuator;
- providing a first braking signal having a first braking signal duration based on the frequency associated with the driving signal;
- and
- providing to the actuator a second braking signal having at least one of a second braking signal duration based on the frequency associated with the driving signal and a start time based on the frequency and the number of peaks or the number of oscillation half-cycles associated with the driving signal.
A method of controlling an actuator to produce a haptic effect comprising:
- providing a driving signal associated with an amplitude, a frequency and a number of peaks or a number of oscillation half-cycles to the actuator;
- providing to the actuator a first braking signal having a first braking signal duration based on the frequency associated with the driving signal;
- providing to the actuator a second braking signal having at least one of a second braking signal duration based on the frequency associated with the driving signal and a start time based on the frequency and the number of peaks or the number of oscillation half-cycles associated with the driving signal.
Dependencies are inferred from the claim text.