Vibration control method of linear motor and mobile terminal

A linear motor and mobile terminal technology, applied in the direction of linear DC motor control, AC motor control, control system, etc., can solve problems such as vibration superposition, noise, and short vibration interval of linear motors

Active Publication Date: 2019-08-09
VIVO MOBILE COMM CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a vibration control method of a linear motor and a mobile terminal to solve the problem of superposition of vibration due to the short vibration interval of the linear motor, so that the mass block of the linear motor is displaced too much during the vibration process and collides with the casing, resulting in noise problem

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  • Vibration control method of linear motor and mobile terminal
  • Vibration control method of linear motor and mobile terminal
  • Vibration control method of linear motor and mobile terminal

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Embodiment Construction

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0027] For the scheme of using high-voltage drive mode to drive the linear motor stated in the background technology section, you can refer to figure 1 The vibration control system of the linear motor in the mobile terminal device shown includes a central processing unit (Central Processing Unit, CPU) and a linear motor drive module. The linear motor drive module mainly includes an input port, a drive circuit, a boost circuit and a voltage and curr...

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Abstract

The embodiment of the invention discloses a vibration control method of a linear motor. The method comprises the steps of: predicting the maximum displacement of vibration of a linear motor under thedrive of a second vibration waveform according to target parameters within the first duration when the vibration of the linear motor is controlled based on a first vibration waveform and prior to thecontrol of the vibration of the linear motor based on the second vibration waveform; in a condition that the maximum displacement is larger than a preset displacement, processing the second vibrationwaveform; and controlling the vibration of the linear motor based on the processed second vibration waveform to allow the displacement of the vibration of the linear motor to be smaller than or equalto the preset displacement, wherein the target parameters comprise the accelerated speed and the speed of the linear motor. According to the embodiment of the invention, the noise generated by the collision of the mass block of the linear motor and the shell of the linear motor due to overlarge displacement can be avoided, and the user experience is improved.

Description

technical field [0001] The invention relates to the field of mobile terminals, in particular to a vibration control method of a linear motor and a mobile terminal. Background technique [0002] At present, in order to meet the user's higher and higher experience requirements for mobile terminal equipment, a linear motor used as a tactile feedback module is installed in the mobile terminal equipment. The linear motor can be used to make various realistic vibration effects and is used in games. It can bring a good tactile feedback experience to users when it is in scenes such as audio and video. [0003] In order to enhance the vibration feeling and enrich the user's human-computer interaction experience, the linear motor is usually driven by a high-voltage drive method. In this way, although it can bring a strong sense of vibration, in the short vibration of the linear motor, due to the needs of some applications, such as the burst mode of shooting games, the time interval b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P25/06H02P25/032H02P7/02
CPCH02P25/06H02P7/02H02P25/032
Inventor 唐志伟
Owner VIVO MOBILE COMM CO LTD
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