Title:
ELLIPTIC VIBRATION DEVICE
Document Type and Number:
Japanese Patent JP3161277
Kind Code:
B2
Abstract:
PURPOSE: To hold horizontal directional and vertical directional phase difference angles in an optimal value by determining a phase angle of first and second phase shifters so that a phase difference between a first vibration system and a second vibration system satisfies an optimal vibration condition of a movable part, making the first and the second vibration systems perform selfexcited vibration, and making the first vibration system perform resonance vibration.
CONSTITUTION: Output of a first controller 39 is supplied to an electromagnet 41, and a horizontal directional first vibration system 32 is driven, and this vibrational displacement is detected by a vibrational displacement detector 33, and is supplied to a second controller 34. Its output is supplied to an electromagnet 36, and is supplied to a vertical directional second vibration system 37. This vibrational displacement is detected by a vibrational displacement detecting means unit 38, and is fed back in the negative to the first controller 39. A part between the vibration displacement detector 38 and the first controller 39 is opened, and in a resonance frequency, a phase difference of 180 degrees is obtained between them, and a phase difference of 60 degrees is obtained between the vibrational displacement detector 33 and the vibrational displacement detector 38 according to a phase angle of 30 degrees set by a second phase shifter 45.
Inventors:
Yutaka Kurita
Kyouji Muragishi
Hitoshi Yasuda
Kyouji Muragishi
Hitoshi Yasuda
Application Number:
JP10046795A
Publication Date:
April 25, 2001
Filing Date:
March 31, 1995
Export Citation:
Assignee:
Shinko Electric Co., Ltd.
International Classes:
B65G27/24; B06B1/02; B06B1/04; B65G27/32; B65G47/14; G05D19/02; (IPC1-7): B65G27/32; B06B1/04; B65G27/24; G05D19/02
Domestic Patent References:
| JP5474566A | ||||
| JP5474567A | ||||
| JP59172317A | ||||
| JP6312380A | ||||
| JP3256908A | ||||
| JP5105220A | ||||
| JP6292215U |
Attorney, Agent or Firm:
Yasuo Iisaka