Active Suspension System Considering Jerk and Semiactive Suspension System

摘要

The present invention relates to an active suspension and a preview control method for a semi-active suspension.;In the predictive control method considering the jerk of the active suspension according to the present invention,;Lt; / RTI ;A method of controlling a semi-active suspension using a variable damper and a three-stage variable spring according to the present invention, includes the steps of: v (t) minimizing the difference between the control force of the semi-active suspension device and the control force of the active suspension device, And k (t) are unchanged if x ₂ -x ₄ = 0 or g (t) = 0, otherwise k (t);If g (t) = 0, v (t) is unchanged, otherwise, if a) one time v (t) = - u0 / g (t), if b), c) when one or the x ₂ -x _{When 4} = 0,;According to;In the preview control method considering the jerk of the semi-active suspension using only the endless variable damper according to the present invention, in order to make the control force of the semi-active suspension approaches the control force of the active suspension, the control force of the semi-active suspension and the active suspension V (t), which minimizes the difference in the control force of the apparatus, does not change if g (t) = 0, otherwise v (t);Respectively.;According to the above-described configuration, the controller of the active and semi-active suspension devices is designed by including the vertical acceleration of the vehicle body as well as the RMS amount of the upper and lower jerk of the vehicle body in the figure of merit so as to reduce the jerk and acceleration, .