A tactile vibration control system and method for an intelligent terminal

Abstract

The invention discloses a tactile vibration control system and method for an intelligent terminal. The system includes: a command generator, a haptic driver, a linear resonant actuator, a sensing module, a feedback unit, and a comparator. The state of the actuator is monitored or sensed through the sensing module including a plurality of sensors, and the Generate multi-channel sensor signals when the actuator vibrates; the feedback unit sends the sensor signals output by multiple sensors representing the physical quantities related to the vibration mode as feedback signals to the comparator; the comparator generates an error signal according to the feedback signal and the expected signal in the input signal Send it to the command generator, so that the command generator adjusts the original command signal it generates according to the error signal, and completes the closed-loop control of the linear resonant actuator. The invention can robustly estimate the state of the actuator and apply control, solve the residual phenomenon of trailing when the linear resonant actuator vibrates, and have the technical effect of real-time adjustment of the vibration state of the actuator.

Description

technical field [0001] The present invention relates to the technical field of tactile feedback, in particular to a tactile vibration control system and method for an intelligent terminal. Background technique [0002] For many years, the communication and media technology fields have fully explored and utilized the receiving channels of visual and auditory information, although the tactile sense has applications in fields such as virtual reality and game special effects, such as remote or indirect control, using gamepads, etc. The vibration simulates shooting, explosion and other scenes, but it is not until recent years that the tactile information channel has been further explored. [0003] A linear resonant actuator is an electromagnetic system with a mass loaded on a spring, which has an inherent or natural resonant frequency, and is usually a high-quality factor system, so when the input drive electrical signal stops, the system's oscillatory response does not immediate...

AI Technical Summary

Problems solved by technology

[0003] A linear resonant actuator is an electromagnetic system with a mass loaded on a spring, which has an inherent or natural resonant frequency, and is usually a high-quality factor system, so when the input drive electrical signal stops, the system's oscillatory response does not immediately It disappears but gradually weakens. This residual vibration will last for a period of time, and even affect the next vibration, and the desired vibration effect cannot be achieved.

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