※一部利用できない機能があります
| 1.
論文 |
論文
|
武田, 定彦 ; 長屋, 幸助 ; 永井, 健一 ; 井開, 重男
概要:
application/pdf<br />Journal Article<br />This paper presents theoretical and experimental results for the steady state response of a relaxation-suspension system considering the unsymmetrical damping force under periodic excitation.
…
the unsymmetrical damping force has two different values in period of the stroke velocity. In the analysis, exact solutions are obtained by considering the continuity of the response at the boundary in which the damping force varies. Numerical calculations are carried out for various values of the ratio of the damping coefficient. It is found that the reference line of the vibration in the relaxation-suspension system maintains a constant value within the range of the high frequency ratio, while the reference line in the direct-suspension system varies proportionally to the change of frequency ratio. The experimental values agreed fairly well with the theoretical results.
続きを見る
|
||
| 2.
論文 |
論文
|
長屋, 幸助 ; 佐藤, 浩 ; 中村, 信章 ; 武田, 定彦 ; 永井, 健一 ; 井開, 重男 ; 孫, 健利
概要:
application/pdf<br />Journal Article<br />Thi paper describes a method of active vibration control for passing through critical speeds of a rotating shaft using electro-magnetic clutches. In this method the vibration of the shaft due to
…
whirling is controlled by means of on and off electric current controls of the electro-magnetic clutches which support the shaft under the on control, The principle of this method is to change the eigen-frequencies of the shaft by adding or losing the supports during shaft rotation. To verify the present method, this paper provides a model of a rotating shaft system with an electro-magnetic clutch, and examines the results analytically and experimentally.
続きを見る
|
||
| 3.
論文 |
論文
|
長屋, 幸助 ; 中田, 雅之 ; 増尾, 芳幸 ; 井開, 重男
概要:
application/pdf<br />Journal Article<br />This study proposes a new type of electromagnetic multiple disk brake for controlling the friction torque of the brake by using a rare earth magnet which generates very strong magnetic fields.
…
This brake consists of a rare earth permanent magnet, an electric magnet and multiple friction disks. In this system, a control device such as a microcomputer generates an electric current in a coil of the electric magnet, and controls the friction torque of the brake. In the analysis the design formulae for the brake is first derived, based on the theory of electro-magnetic fields and the theory of tribology, then the transient friction torque is derived using the theories of Dynamics of Machinery and Automatic Control. To verify the present system and the analytical method, experimental tests have been performed for a model of the above-mentioned brake.
続きを見る
|
