Suspension mount structure of electric vehicle and perfromance evaluating method for the same
AssigneePukyong National University Industry-University Cooperation Foundation
InventorChan-Jung Kim
Life of this patent
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Abstract
Disclosed are a suspension mount structure of an electrified vehicle and a method for evaluating performance thereof. The suspension mount structure includes an upper structure of the electrified vehicle; and a suspension on which the upper structure is mounted, wherein vibration occurring at a location below the suspension is transmitted to the suspension via an axle and then is transmitted to the upper structure via the suspension, wherein the suspension includes a spring and a damper, wherein the spring and the damper are connected in series to each other and are connected in series to the upper structure.
Claims5
A suspension mount structure of an electrified vehicle, the suspension mount structure comprising:
- an upper structure of the electrified vehicle;
- and
- a suspension on which the upper structure is mounted, wherein vibration occurring at a location below the suspension is transmitted to the suspension via an axle and then is transmitted to the upper structure via the suspension,
- wherein the suspension includes a spring and a damper, wherein the spring and the damper are connected in series to each other and are connected in series to the upper structure,
- wherein vibration transmissibility of the suspension is determined based on a following Equation 1:
- x
-
- (
- ω
- )
- y
-
- (
- ω
- )
- =
- CK
- CK
- -
- MC
-
- ω
- 2
- -
- MK
-
- (
- ω
-
- j
- )
- Equation
-
- 1
- where M denotes an equivalent mass of the upper structure, C denotes a damping coefficient set for the damper, K denotes a stiffness coefficient of the spring, ω denotes an angular frequency (=2πf), and j denotes a complex number.
A method for evaluating performance of a suspension mount structure of an electrified vehicle, the method comprising:
- setting an equivalent mass of an upper structure of the electrified vehicle;
- mounting the upper structure on a suspension, wherein the suspension includes a spring and a damper connected in series to each other;
- setting a damping coefficient of the damper and a stiffness coefficient of the spring;
- setting vibration transmissibility of the suspension;
- applying the equivalent mass of the upper structure, and the damping coefficient and the stiffness coefficient of the suspension to the vibration transmissibility;
- and
- changing a frequency of input vibration input to the suspension to analyze change in vibration transmissibility of the suspension.
Dependencies are inferred from the claim text.