巻号一覧
12 巻 (1981)
- 7 号 p. 493-
- 6 号 p. 411-
- 4 号 p. 262-
- 3 号 p. 209-
- 2 号 p. 129-
- 1 号 p. 58-
12 巻, 4 号
選択された号の論文の3件中1～3を表示しています
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第3報 案内弁のポート幅が異なる場合荒木 獻次1981 年 12 巻 4 号 p. 262-268
発行日: 1981年
公開日: 2010/10/21
ジャーナル フリーThis paper describes the frequency characteristics of a peneumatic valve-controlled cylinder system with an unevenunderlap and different-port-widths four-way valve. Theoretical analysis is made of the frequency characteristics of the system wherein a valve which has the unevenness of the underlaps (i), the mean underlap J and the port width ratio ζ used, and an inertial load with both viscous friction and Coulomb friction is applied to the cylinder, and the flow versus pressure curves for the valve are approximated partially as polinomials of degree 3 of the pressure. The tendency shown by the theoretical results agrees fairly well with that by the experimental results.
It is shown that a suitable selection of and 1 may reduce the air consumption for a peneumatic servo system.抄録全体を表示PDF形式でダウンロード (994K) -
第4報 周波数特性の簡易計算荒木 獻次1981 年 12 巻 4 号 p. 269-276
発行日: 1981年
公開日: 2010/10/21
ジャーナル フリーA four-way valve used in a peneumatic servo system may have uneven-underlaps or different port widths. A cylinder is often used as a load for the valve, and generally it has Coulomb friction as well as viscous friction.
The frequency characteristics of such a valve-controlled-cylinder system show a nonlinearity, and a simple linearization of the system may lead to a large error.
Two methods to find out such frequency characteristics are described here. One is to approximate a system partially with 2nd order lag. The other is to use the describing function of a system. The formulae used in these methods are very easy to calculate and will give results with small error, and may be suitable for the analysis and the design of a peneumatic servo system.抄録全体を表示PDF形式でダウンロード (1183K) -
田中 裕久1981 年 12 巻 4 号 p. 277-281
発行日: 1981年
公開日: 2010/10/21
ジャーナル フリーPneumatic control technique is widely applied to the control of industrial machines due to its easy handling. Some modern pneumatic servomechanisms require such valves as can control pneumatic power in proportion to the electric signal without complex adjustments. For this purpose, we have developed an electro-pneumatic proportional valve (abbreviated EPPV) consisting of a three-way position control valve-spool and a proportional solenoid.
In this paper, the valve performance and the transient characteristics of the servocylinder are discussed.抄録全体を表示PDF形式でダウンロード (675K)
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