JPS6091423A - Controller of vibrating stage - Google Patents
Controller of vibrating stageInfo
- Publication number
- JPS6091423A JPS6091423A JP58199565A JP19956583A JPS6091423A JP S6091423 A JPS6091423 A JP S6091423A JP 58199565 A JP58199565 A JP 58199565A JP 19956583 A JP19956583 A JP 19956583A JP S6091423 A JPS6091423 A JP S6091423A
- Authority
- JP
- Japan
- Prior art keywords
- setter
- acceleration
- converter
- adder
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D19/00—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase
- G05D19/02—Control of mechanical oscillations, e.g. of amplitude, of frequency, of phase characterised by the use of electric means
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Feedback Control In General (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
Description
【発明の詳細な説明】
の
本発明は振動台\制御装置に係り、特に振動、疲労試験
装置等に適用し得る振動台の制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vibration table/control device, and particularly to a vibration table control device that can be applied to vibration, fatigue testing equipment, and the like.
従来、電油サーボアクチュエータを使った振動台装置等
において、試験体の耐久試験、或いは共振試験では、加
速度一定の正弦波スイープ試験が多用され、JI8等に
おいても義務づけられている。Conventionally, in vibration table apparatuses and the like using electro-hydraulic servo actuators, sine wave sweep tests with constant acceleration have been frequently used in durability tests or resonance tests of test objects, and are also required by JI8 and the like.
これは第1図に示す如く、加速度振巾設定器Iでセット
した定数とピーク値検出回路I8で検出した加速度振巾
を誤差検出器3にて比較し可変増幅器4にて適当に増幅
した信号を、メインの加速度入力信号2Iと加算器7に
て加え合せる事により加振機IKに加えられる出力加速
度の振巾を加振周波数に関係なく一定入力値に一致させ
ようとするものである。As shown in Fig. 1, this is a signal that is obtained by comparing the constant set by the acceleration amplitude setting device I and the acceleration amplitude detected by the peak value detection circuit I8 in the error detector 3, and appropriately amplifying it in the variable amplifier 4. By adding these to the main acceleration input signal 2I in the adder 7, the amplitude of the output acceleration applied to the vibration exciter IK is made to match a constant input value regardless of the vibration frequency.
なお第1図において、Iは加速度振巾設定器、2は正弦
波スイープ発振器、3は誤差検出器、4は可変増幅器、
5.6は乗算器、7は加算器、8は誤差検出器、9は廿
−ボ増幅器、10はサーボ弁、11は加振機、I 21
はテーブル、13は試験体、14は変位検出器、I5は
変位増幅器、16は加速度検出器、17は加速度増幅器
、I8はピーク値検出回路、20は目標信号発生部、2
1〜23は各信号である。In FIG. 1, I is an acceleration amplitude setter, 2 is a sine wave sweep oscillator, 3 is an error detector, 4 is a variable amplifier,
5.6 is a multiplier, 7 is an adder, 8 is an error detector, 9 is a servo amplifier, 10 is a servo valve, 11 is an exciter, I21
13 is a table, 13 is a test object, 14 is a displacement detector, I5 is a displacement amplifier, 16 is an acceleration detector, 17 is an acceleration amplifier, I8 is a peak value detection circuit, 20 is a target signal generator, 2
1 to 23 are respective signals.
しかしながら上記第1図に示された従来装置においては
、現実には試験体と加振機系の動特性が連成して、加速
度一定加振ができない周波数域が存在するのが普通であ
り、耐久試験或いは共振試験が満足に行なえないという
欠点があった。However, in the conventional device shown in FIG. 1 above, in reality, the dynamic characteristics of the test specimen and the vibrator system are coupled, and there is usually a frequency range in which constant acceleration cannot be vibrated. There was a drawback that durability tests or resonance tests could not be carried out satisfactorily.
本発明は上記欠点を解消するために提案されたもので、
その目的とするところは、試験体と加振機の達成を補償
する機能を備え、且つ任意点を通る任意勾配直線に沿っ
てのスイープ加振を行なえる機能を有する振動台の制御
装置を提供するにある。The present invention was proposed to solve the above-mentioned drawbacks.
The purpose is to provide a control device for a vibration table that has the function of compensating the performance of the test specimen and the vibration exciter, and also has the function of performing sweeping vibration along an arbitrary slope straight line passing through an arbitrary point. There is something to do.
本発明による振動台の制御装置は加速度振巾設定器およ
び正弦波スイープ発振器を有する目標信号発生部から出
力される加振信号に応じた加振力により振動台を駆動す
る振動台の制御装置において、前記目標信号発生部にそ
れぞれ前記加速度振巾設定器に接続された対数変換器と
、前記正弦波スイープ発振器に接続された対数変換器お
よび可変勾配設定器と、前記加速度振巾設定器に接続さ
れた前記対数変換器から出力される信号と前記可変勾配
設定器から出力される信号とを加算する加算機と、この
加算機から出力される信号を指数変換する指数変換器と
を具備してなることを特徴とし、従来の加速度振巾一定
のスイープ信号発振並びに加振の機能はもちろんのこと
、速度、ストローク振巾一定スイープも含み、更に加振
周波数の任意べき乗値の振巾一定スイープ信号発振器と
それによる加振制御を行い得るようにしたものである。A vibration table control device according to the present invention is a vibration table control device that drives a vibration table using an excitation force according to an excitation signal output from a target signal generation section having an acceleration amplitude setting device and a sine wave sweep oscillator. , a logarithmic converter connected to the acceleration amplitude setter in the target signal generating section, a logarithmic converter and a variable slope setter connected to the sine wave sweep oscillator, and a logarithmic converter and a variable slope setter connected to the acceleration amplitude setter, respectively. an adder that adds the signal output from the logarithmic converter and the signal output from the variable slope setter; and an index converter that converts the signal output from the adder into an index. In addition to the conventional constant acceleration amplitude sweep signal oscillation and excitation functions, it also includes constant velocity and stroke amplitude sweeps, and also includes constant amplitude sweep signals of any power of the excitation frequency. An oscillator and excitation control using the oscillator can be performed.
本発明の一実施例を添付図面を参照して詳細に説明する
。An embodiment of the present invention will be described in detail with reference to the accompanying drawings.
第2図は本発明の一実施例の要部の構成を示すブロック
図、第3図は本発明の一実施例によるスイープ加振の説
明図である。FIG. 2 is a block diagram showing the configuration of a main part of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of sweep vibration according to an embodiment of the present invention.
第2図に示されたものは第1図における目標信号発生部
20に対応する目標信号発生部24の構成を示すもので
あり、第1図に示された従来の加速度振巾設定器1、正
弦波スイープ発振器2の他に、それらから発せられる加
速度信号および周波数信号を対数変換する2対の対数変
換器1a及び発生信号の勾配を設定する可変勾配設定器
1b、及び加算器XC,指数変換器Idより構成されて
いる。その他の構成は第1図に示されたものと同一であ
る。What is shown in FIG. 2 shows the configuration of a target signal generating section 24 corresponding to the target signal generating section 20 in FIG. In addition to the sine wave sweep oscillator 2, there are two pairs of logarithmic converters 1a for logarithmically converting the acceleration signal and frequency signal emitted from them, a variable slope setting device 1b for setting the slope of the generated signal, an adder XC, and an exponential conversion. It consists of a container Id. The rest of the configuration is the same as that shown in FIG.
上記本発明の一実施例の作用について説明する。The operation of the above embodiment of the present invention will be explained.
第2図において、加速度振巾設定器Iにて、一定加速度
Go を発生し、対数変換器1aにより、JogGoと
する。他方正弦波スイープ発振器2から発せられる周波
数信号N同じく対数変換器Iaによりllog fに変
換し、更に、可変勾配設定器Zbにより、k10g/と
し、先の信号と加算機ICにて加算し、log (Go
/k)なる信号を作り、最後に指数変換器1dを通し
てGOfkなる信号22とする。In FIG. 2, an acceleration amplitude setter I generates a constant acceleration Go, and a logarithmic converter 1a converts it into JogGo. On the other hand, the frequency signal N emitted from the sine wave sweep oscillator 2 is also converted to log f by the logarithmic converter Ia, and further converted to k10g/ by the variable slope setter Zb, added to the previous signal by the adder IC, and (Go
/k) and finally passes through an index converter 1d to generate a signal 22 GOfk.
こ\で加速度(定数)と勾配kを適当にセットすること
により、第3図に示す如く装置の限界性能内、任意の点
を通る任意の勾配の直線に沿ったスイープ加振が行なえ
る。例えば従来通りの加速度一定スイープは、k−0に
すると得られ、k=1とすれば、速度一定スイープとな
り、また1(=2とすれば、ストローク一定スイープが
得られる。By appropriately setting the acceleration (constant) and gradient k, sweep excitation can be performed along a straight line of any gradient passing through any point within the limit performance of the device, as shown in FIG. For example, a conventional constant acceleration sweep is obtained by setting k-0, a constant velocity sweep is obtained by setting k=1, and a constant stroke sweep is obtained by setting k=1.
以上により本発明−によれば、例えば勾配kをθ付近で
微調整することにより、試験体と加振機の達成を補償す
る加速度一定加振を行なう機能を持たせることができ、
一定ストローク、一定速度、一定加速度の加振がkの値
を調整するだけで行なえる。As described above, according to the present invention, for example, by finely adjusting the slope k near θ, it is possible to provide a function of performing constant acceleration vibration to compensate for the achievement of the test specimen and the vibration exciter.
Excitation with a constant stroke, constant speed, and constant acceleration can be performed simply by adjusting the value of k.
またkを1.2付近で微調整することにより、試験体と
加振機の達成を補償する速度一定或いはストローク一定
加振を行なう機能を持たせることができる。Further, by finely adjusting k to around 1.2, it is possible to provide a function of constant speed or constant stroke excitation that compensates for the achievement of the test specimen and the vibrator.
その他、ユーザー・ニーズに応じて限界性能内、任意点
を通る任意勾配直線に沿っての不イープ加振をする機能
を持たせることができる等の優れた効果が奏せられるも
のである。In addition, other excellent effects can be achieved, such as the ability to perform non-sweep vibration along an arbitrary slope straight line passing through an arbitrary point within the limit performance according to the user's needs.
第1図は従来例の構成を示すブロック図、第2図は本発
明の一実施例の要部の構成を示すブロック図、第3図は
本発明の一実施例によるスイープ加振の説明図である。
I・・・加速度振巾設定器、2・・・正弦波スイープ発
振器、Za・・・対数変換器、Ib・・・可変勾配設定
器、IC・・・加算器、1d・・・指数変換器、24・
・・目標信号発生部。
出願人復代理人 弁理士 鈴 江 武 彦十
113−
−]
コニ
「
、−」FIG. 1 is a block diagram showing the configuration of a conventional example, FIG. 2 is a block diagram showing the configuration of essential parts of an embodiment of the present invention, and FIG. 3 is an explanatory diagram of sweep excitation according to an embodiment of the present invention. It is. I: Acceleration amplitude setter, 2: Sine wave sweep oscillator, Za: Logarithmic converter, Ib: Variable gradient setter, IC: Adder, 1d: Exponential converter , 24・
...Target signal generator. Applicant Sub-Agent Patent Attorney Suzue Takehikoju 113--] Koni ",-"
Claims (1)
目標信号発生部から出力される加振信号に応じた加振力
により振動台を駆動する振動台の制御装置において、前
記目標信号発生部にそれぞれ前記加速度振巾設定器に接
続された対数変換器と、前記正弦波スイープ発振器に接
続された対数変換器および可変勾配設定器と、前記加速
度振巾設定器に接続された前記対数変換器から出力され
る信号と前記可変勾配設定器から出力される信号とを加
算する加算器と、この加算器から出力される信号を指数
変換する指数変換器とを具備してなることを特徴とする
振動台の制御装置。In a control device for a vibration table that drives a vibration table by an excitation force according to an excitation signal output from a target signal generation section having an acceleration amplitude setting device and a sine wave sweep oscillator, each of the target signal generation sections has the A logarithmic converter connected to an acceleration amplitude setter, a logarithmic converter and a variable slope setter connected to the sine wave sweep oscillator, and an output from the logarithmic converter connected to the acceleration amplitude setter. A vibration table comprising: an adder for adding a signal outputted from the variable gradient setter with a signal outputted from the variable slope setting device; and an index converter for converting the signal outputted from the adder into an index. Control device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58199565A JPS6091423A (en) | 1983-10-25 | 1983-10-25 | Controller of vibrating stage |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58199565A JPS6091423A (en) | 1983-10-25 | 1983-10-25 | Controller of vibrating stage |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6091423A true JPS6091423A (en) | 1985-05-22 |
Family
ID=16409940
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58199565A Pending JPS6091423A (en) | 1983-10-25 | 1983-10-25 | Controller of vibrating stage |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6091423A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002071506A (en) * | 2000-08-28 | 2002-03-08 | Akashi Corp | Vibration testing device |
JP2004347490A (en) * | 2003-05-23 | 2004-12-09 | National Institute Of Advanced Industrial & Technology | Intrusion probe |
-
1983
- 1983-10-25 JP JP58199565A patent/JPS6091423A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002071506A (en) * | 2000-08-28 | 2002-03-08 | Akashi Corp | Vibration testing device |
JP2004347490A (en) * | 2003-05-23 | 2004-12-09 | National Institute Of Advanced Industrial & Technology | Intrusion probe |
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