초록

A semiactive control apparatus for damping motion of a body. According to the sensed position and velocity of the body, a voltage is applied or removed from the electrorheological fluid contained in an elastic body and coupled to the body, thus damping the body\s motion.

대표청구항 ▼

An apparatus for damping motion of a body, comprising: means for containing electrorheological fluid, said means being coupled to said body; means for applying a voltage to said electrorheological fluid, said voltage being defined as and wherein fi represents the maximum value of u and 0 represents

An apparatus for damping motion of a body, comprising: means for containing electrorheological fluid, said means being coupled to said body; means for applying a voltage to said electrorheological fluid, said voltage being defined as and wherein fi represents the maximum value of u and 0 represents the minimum value of u; means for detecting the velocity of the motion of said body and for generating a velocity signal representative thereof; means for detecting the position of said body with respect to a pre-determined reference position and for generating a position signal representative thereof; single means connected with said voltage applying means and responsive to said position and velocity signals for providing signals for changing the voltage applied to said fluid depending upon both of said position and velocity signals; and wherein said single means includes processor means for storing and utilizing said position and velocity signals and system parameter values which are based upon the measured damping values, spring values, and the mass of said body in such a way that said system parameters are defined as matrices P and B1 having a set of components, wherein said measured damping values are defined as c(u), said spring values are defined as k(u) and said mass is defined as M, wherein introduced variables aba1c, a1k, b1c, b1k, and which are derived from a first set of equations including c(u)=a1c+b1cu for ueu], and k(u)=a1k+b1ku for ueu], wherein said values of ab(1) and c(1) which are derived from a second set of equations which results are used to find values for yet further additional introduced values xh3 according to the condition that xh3>0, to thereby obtain values for p1, and p2 according to a third set of equations p1=x3,p2h3, wherein said values for p1, p2 and p3 are components defining said matrix P, wherein said matrix B1 is defined by values including said values for b1 and said position and velocity signals are combined in a calculation which results in said signals for changing the voltage thereby altering the damping characteristics of the apparatus.