JP2013074360A5

JP2013074360A5 -

Info

Publication number: JP2013074360A5
Application number: JP2011210189A
Authority: JP
Filing date: 2011-09-27
Publication date: 2014-09-25
Anticipated expiration: 2031-09-27

Description

本発明は、上述の課題の少なくとも一部を解決するためになされたものであり、以下の形態または適用例として実現することが可能である。
［適用例１］
本発明の振動子の周波数調整方法は、振動子の共振周波数を調整する周波数調整方法であって、
質量変化手段による前記振動子の質量変化を許容する開状態と、前記質量変化を阻止する閉状態とを切り替えることができるシャッター部と、
前記シャッター部の前記切り替えを制御する制御手段と、を備えているシャッター装置を用意する工程と、
前記振動子と前記質量変化手段との間に、前記シャッター部を配置する工程と、
前記シャッター部を前記開状態として前記振動子の質量変化を開始した後、前記シャッター部を前記閉状態にして前記振動子の共振周波数を調整する周波数調整工程と、
前記周波調整工程における前記閉状態の前に、前記制御手段から前記シャッター部を前記閉状態とする命令が出力された第１時刻と、前記命令を受けて前記シャッター部が前記閉状態となった第２時刻との時間差を求める遅延時間検出工程と、を含み、
前記周波数調整工程では、前記制御手段は、前記時間差に基づいて、前記シャッター部を前記閉状態とする命令を出力する時刻を補正することを特徴とする。
これにより、高精度に、振動子の共振周波数を目的の共振周波数に合わせ込むことができる。 SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.
[Application Example 1]
The frequency adjustment method of the vibrator of the present invention is a frequency adjustment method for adjusting the resonance frequency of the vibrator,
A shutter part capable of switching between an open state allowing mass change of the vibrator by a mass changing means and a closed state preventing the mass change;
Preparing a shutter device comprising a control means for controlling the switching of the shutter,
Arranging the shutter portion between the vibrator and the mass changing means;
A frequency adjustment step of adjusting the resonance frequency of the vibrator by making the shutter part in the closed state after starting the mass change of the vibrator with the shutter part in the open state;
Prior to the closed state in the frequency adjustment step, a first time when a command to turn the shutter unit to the closed state is output from the control unit, and the shutter unit is in the closed state in response to the command. wherein the delay time detection step of obtaining the time difference between the second time, and
In the frequency adjustment step, the control means corrects a time for outputting a command to close the shutter unit based on the time difference.
Thereby, the resonance frequency of the vibrator can be adjusted to the target resonance frequency with high accuracy.

［適用例４］
本発明の振動子の周波数調整方法では、前記遅延時間検出工程は、前記第１工程と前記第２工程との間に行われることが好ましい。
これにより、振動子の周波数調整を円滑に行うことができる。
［適用例５］
本発明の振動子の周波数調整方法では、前記第１時刻により前記第１工程が終了することが好ましい。
これにより、シャッター装置の無駄な駆動を防止することができる。 [Application Example 4]
In the vibrator frequency adjusting method of the present invention, it is preferable that the delay time detecting step is performed between the first step and the second step.
As a result, the frequency of the vibrator can be adjusted smoothly.
[Application Example 5]
In the vibrator frequency adjusting method of the present invention, it is preferable that the first step is completed at the first time .
Thereby, useless driving of the shutter device can be prevented.

Claims

A frequency adjustment method for adjusting a resonance frequency of a vibrator,
A shutter part capable of switching between an open state allowing mass change of the vibrator by a mass changing means and a closed state preventing the mass change;
Preparing a shutter device comprising a control means for controlling the switching of the shutter,
Arranging the shutter portion between the vibrator and the mass changing means;
A frequency adjustment step of adjusting the resonance frequency of the vibrator by making the shutter part in the closed state after starting the mass change of the vibrator with the shutter part in the open state;
Prior to the closed state in the frequency adjustment step, a first time when a command to turn the shutter unit to the closed state is output from the control unit, and the shutter unit is in the closed state in response to the command. wherein the delay time detection step of obtaining the time difference between the second time, and
In the frequency adjustment step, the control means corrects a time for outputting a command to set the shutter unit in the closed state based on the time difference.

In the delay time detecting step, in a state where the mass of the vibrator is changed by the mass changing means, the difference between the resonance frequency of the vibrator at the first time and the resonance frequency of the vibrator at the second time 2. The method of adjusting a frequency of a vibrator according to claim 1, wherein the time difference is obtained based on a resonance frequency change amount per unit time of the vibrator.

The frequency adjustment step includes a first step that is a first frequency adjustment step and a second step that is a second frequency adjustment step, and the second step after the first step, The method for adjusting a frequency of a vibrator according to claim 1 or 2, wherein the amount of change in resonance frequency per unit time in the second step is smaller than that in the first step.

The method for adjusting a frequency of a vibrator according to claim 3, wherein the delay time detection step is performed between the first step and the second step.

The method of adjusting a frequency of a vibrator according to claim 4, wherein the first step is ended by the first time .

4. The frequency adjustment of the vibrator according to claim 3, wherein in the delay time detection step, the time difference is obtained by switching the shutter unit to a closed state in the middle of at least one of the first step and the second step. Method.

The frequency adjusting step is a step of adjusting the resonance frequency of the m pieces of oscillators (where m is a natural number of 2 or more) sequentially in time series, and the nth (where n is 2 or more and m When the resonance frequency of the vibrator of the following natural number) is adjusted, the delay time detection step is performed between the step of adjusting the resonance frequency of the (n−1) th vibrator and the frequency adjustment step. The frequency adjustment method of the vibrator according to claim 1 or 2, wherein the method is performed.