Patent ID: 8997951
Filing Date: 2015-04-07
Classification: F16F

Abstract:
1. An actively controlled colloidal damper comprising: a cylinder; a piston guided and supported by the cylinder, the piston having a reciprocating motion and defining a closed space in association with the cylinder; a porous body having a large number of pores, and being housed in the closed space; a working liquid being housed in the closed space together with the porous body, the working liquid flowing into the pores of the porous body during pressurization, and flowing out from the pores of the porous body during depressurization; and a pressure controlling device that controls dissipated energy and a damping coefficient of the actively controlled colloidal damper, according to the following Equation (6): wherein E is the dissipated energy, C is the damping coefficient, D is diameter of the piston, S is displacement excitation, S v is amplitude of the displacement excitation, S 0 is a start position of the piston, ω is circular excitation frequency, p 0 is initial pressure, p c is internal pressure during pressurization of the closed space, and p r is internal pressure during depressurization of the closed space.