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Tactile vibration control system and method for intelligent terminal

A vibration control and smart terminal technology, applied in the field of tactile feedback, can solve the problems of vibration influence, inability to realize vibration effect, etc., and achieve the effect of real-time adjustment of vibration state

Active Publication Date: 2016-04-20
GOERTEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Tactile vibration control system and method for intelligent terminal
  • Tactile vibration control system and method for intelligent terminal
  • Tactile vibration control system and method for intelligent terminal

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Experimental program
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Embodiment 1

[0040] figure 1 The block diagram of the tactile vibration control system of the smart terminal provided in this embodiment, the smart terminal of the present invention can be a handheld device, a wearable device (such as a smart watch, a smart bracelet), or an industrial control device.

[0041] Such as figure 1 as shown, figure 1 The tactile vibration control system in is an open-loop control system, including: a command generator 11 , a tactile driver 12 , a linear resonant actuator 13 , a sensing module 14 , a feedback unit 15 and a comparator 16 .

[0042] Such as figure 1 As shown, the output of the command generator 11 is connected to the input of the haptic driver 12, the output of the haptic driver 12 is connected to the input of the linear resonant actuator 13, and the output of the linear resonant actuator 13 is connected to the sensor The input end of the module 14, the output end of the sensing module 14 is connected to the input end of the feedback unit 15, th...

Embodiment 2

[0077]This embodiment analyzes the tailing residual phenomenon of the linear resonant actuator when the driving signal stops driving and obtains: the tailing residual phenomenon is completely determined by the convolution of the driving signal and the impulse response of the linear resonant actuator, so In this embodiment, the drive signal is processed to change the output convolved with the impulse response of the linear resonant actuator, so as to further solve the residual phenomenon of tailing when the linear resonant actuator vibrates.

[0078] image 3 The block diagram of the tactile vibration control system of the smart terminal provided in this embodiment, such as image 3 As shown, the haptic vibration control system further includes a filter 39 , and this embodiment requires that the command signal processed by the filter has an overdrive characteristic in the initial period and an active braking characteristic in the final period.

[0079] Such as image 3 As sho...

Embodiment 3

[0100] Based on the same technical concept as that of Embodiments 1 and 2, this embodiment provides a method for controlling tactile vibration of an intelligent terminal.

[0101] Such as Figure 8 as shown, Figure 8For the tactile vibration control method of the smart terminal provided in this embodiment, the control method includes:

[0102] S810. Generate an original command signal according to the input signal, adjust the original command signal according to the generated error signal, and generate a driving signal according to the adjusted command signal, so that the linear resonant actuator vibrates under the driving signal.

[0103] In this step, the original command signal is generated according to the input signal as follows:

[0104] Reading the vibration pattern list of the vibration effect library, and selecting a physical quantity sequence representing the vibration effect corresponding to the desired vibration pattern from the vibration pattern list according ...

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Abstract

The invention discloses a tactile vibration control system and method for an intelligent terminal. The system comprises a command generator, a touch driver, a linear resonance actuator, a sensing module, a feedback unit and a comparator, the state of the actuator is monitored or sensed through the sensing module which includes a plurality of sensors, and multiple paths of sensor signals are generated when the actuator vibrates; the feedback unit sends sensing signals output by the plurality of sensors and representing related physical quantities of a vibration mode as feedback signals to the comparator; and the comparator generates an error signal according to the feedback signals and a desired signal in an input signal and sends the error signal to the command generator, so that the command generator adjusts a generated original command signal according to the error signal, thereby completing closed-loop control of the linear resonance actuator. The tactile vibration control system provided by the invention can estimate the state of the actuator robustly and apply control, avoids the residual phenomenon of trailing when the linear resonance actuator vibrates, and achieves the technical effect of adjusting the vibration state of the actuator in real time.

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...

Claims

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Application Information

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IPC IPC(8): G05D19/02
CPCG05D19/02G06F3/016H02P25/032G08B6/00H02K33/04
Inventor 李波冯勇强楼厦厦
Owner GOERTEK INC
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