Feedback control type shock absorbing suspension system
First Claim
1. A feedback control type shock absorbing suspension system to be inserted between a body including a vibration source and a foundation for suspension of said body, which system comprises a suspending spring mechanism interposed between said body and said foundation, a sensor mechanism for detecting velocity of relative movement between said body and said foundation, a cylinder-piston mechanism including a cylinder connected to one of said body and said foundation and a piston connected to the other of said body and said foundation, a magnetic fluid or powder being held between the outer wall face of the piston and the inner wall face of the cylinder, an exciting coil for generating a magnetic flux for magnetizing said magnetic fluid or powder, and an electric circuit for applying a control voltage corresponding to the detected value of said sensor mechanism to said exciting coil, wherein at least two annular seal members are arranged in axially spaced relation between the outer wall face of the piston and the inner wall face of the cylinder, the space between said seal members constituting a sealed annular chamber, said chamber being filled with all of the magnetic fluid or powder between the inner wall surfaces of the cylinder, and wherein the vibration-damping force between the cylinder and the piston is controlled by magnetization of said magnetic fluid or powder.
0 Assignments
0 Petitions
Accused Products
Abstract
A feedback control type shock absorbing suspension system is inserted between a body including a vibration source and a foundation for suspension of the body. The absorbing system includes a suspending spring mechanism. A sensor mechanism detects velocity of relative movement between the body and the foundation. A cylinder-piston mechanism includes a cylinder connected to one of the body and the foundation and a piston connected to the other of the body and the foundation. Magnetic fluid or powder is held between the inner wall of the cylinder and the outer wall of the piston. An exciting coil generates magnetic flux for magnetizing the magnetic fluid or powder. An electric circuit applies to the exciting coil a control voltage which corresponds to the detected value of the sensor mechanism. The vibration-damping force between the cylinder and the piston is controlled by magnetizing the magnetic fluid or powder.
156 Citations
8 Claims
- 1. A feedback control type shock absorbing suspension system to be inserted between a body including a vibration source and a foundation for suspension of said body, which system comprises a suspending spring mechanism interposed between said body and said foundation, a sensor mechanism for detecting velocity of relative movement between said body and said foundation, a cylinder-piston mechanism including a cylinder connected to one of said body and said foundation and a piston connected to the other of said body and said foundation, a magnetic fluid or powder being held between the outer wall face of the piston and the inner wall face of the cylinder, an exciting coil for generating a magnetic flux for magnetizing said magnetic fluid or powder, and an electric circuit for applying a control voltage corresponding to the detected value of said sensor mechanism to said exciting coil, wherein at least two annular seal members are arranged in axially spaced relation between the outer wall face of the piston and the inner wall face of the cylinder, the space between said seal members constituting a sealed annular chamber, said chamber being filled with all of the magnetic fluid or powder between the inner wall surfaces of the cylinder, and wherein the vibration-damping force between the cylinder and the piston is controlled by magnetization of said magnetic fluid or powder.
Specification