Vibration conformance compensation device and compensation method thereof

Patent metadata

Field	Value
Publication number	US-10090796-B2
Application number	US-201715403554-A
Country	US
Kind code	B2
Filing date	Jan 11, 2017
Priority date	Jul 21, 2016
Publication date	Oct 2, 2018
Grant date	Oct 2, 2018

Abstract

A vibration conformance compensation device includes a linear motor including a vibrator and a coil, a signal generator connecting with the linear motor electrically and outputting a drive signal for driving the linear motor to vibrate, a working parameter feedback module, a processing module connecting having a target vibration state value which is set in the linear motor in advance for comparing the real-time vibration state parameters of the linear motor with the target vibration state value to obtain the comparison result, and a signal conditioning module connecting with the processing module and the signal generator electrically and adjusting the drive signal in accordance with the comparison result to make the vibration state of the linear motor consistent with the target vibration state.

First claim

What is claimed is:

1. A vibration conformance compensation device comprising:
a linear motor including a vibrator and a coil for generating induced electromotive force by interacting with the vibrator,
a signal generator connecting with the linear motor electrically and outputting a drive signal for driving the linear motor to vibrate;
a working parameter feedback module connecting with the linear motor electrically and monitoring and returning real-time vibration state parameters of the linear motor,
a processing module connecting with the working parameter feedback module electrically, having a target vibration state value which is set in the linear motor in advance for comparing the real-time vibration state parameters of the linear motor with the target vibration state value to obtain the comparison result; and
a signal conditioning module connecting with the processing module and the signal generator electrically and adjusting the drive signal in accordance with the comparison result to make the vibration state of the linear motor consistent with the target vibration state;
wherein the real-time vibration state parameters comprise amplitude of the vibrator; and the target vibration state value is the maximum amplitude of the vibrator, the real-time amplitude of the vibrator is compared with a maximum amplitude of the vibrator after fixing the frequency of a subsequent drive signal at the point of the resonant frequency and keeping the amplitude of the drive signal still.

2. The vibration conformance compensation device as described in claim 1 , further comprising a Hall sensor serving as the working parameter feedback module.

3. The vibration conformance compensation device as described in claim 1 , wherein the real-time vibration state comprises a voltage value and a current value of the coil; and the target vibration state is the amplitude of the induced electromotive force of the linear motor.

4. The vibration conformance compensation device as described in claim 1 , further comprising a power amplifier which connects between the signal generator and the linear motor serially and amplifies the drive signal.

5. A vibration conformance compensation method comprising following steps of:
providing a linear motor having a vibrator and a coil which generate a induced electromotive force by interacting with the vibrator;
predetermining a target vibration state of the linear motor;
driving the vibrator of the linear motor to vibrate by inputting a drive signal;
monitoring and returning real-time vibration state parameters of the linear motor;
comparing the real-time vibration state parameters with the target vibration state value;
adjusting the drive signal in accordance with the comparison result to make the vibration state of the linear motor consistent with the target vibration state;
wherein the real-time vibration state parameters comprise amplitude of the vibrator; and the target vibration state value is a maximum amplitude of the vibrator, the real-time amplitude of the vibrator is compared with the maximum amplitude of the vibrator after fixing the frequency of a subsequent drive signal at the point of the resonant frequency and keeping the amplitude of the drive signal still.

6. The vibration conformance compensation method as described in claim 5 , wherein the vibration state parameters comprises a real-time working voltage of the linear motor and the current of the coil; and the target state value is the amplitude of the induced electromotive force of the linear motor.

Assignees

• Ge huan
• Zhou Rongguan
• Aac Technologies Pte Ltd

Inventors

• Ge huan
• Zhou Rongguan

Classifications

• H02K11/215

  Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements · CPC title

• H02P25/06 Primary

  Linear motors · CPC title

• H02P29/50 Primary

  Reduction of harmonics · CPC title

• H02P25/032 Primary

  Reciprocating, oscillating or vibrating motors · CPC title

• H02P7/025

  the DC motors being of the moving coil type, e.g. voice coil motors · CPC title