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조향 운동을 고려한 5-SS 멀티링크 현가장치의 근사 합성
김선평,심재경,안병의,이언구,Kim, Seon-Pyeong,Sim, Jae-Gyeong,An, Byeong-Ui,Lee, Eon-Gu 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.1
This paper presents an approximate synthesis of 5-SS multi link suspension for 2 D.O.F motions. In the proposed synthesis method, alteration curves of camber, toe, kingpin and caster angles are optimized during the bump rebound and the steering motions. And joint positions can be located within desired boundari es. Especially, steering motions are considered for control of kingpin offset and caster trail. Prescribed motions contain both wheel center positions and imaginary kingpin axes in the multi link type suspension. Constraint equations are formulated with di splacement matrix and velocity matrix using instantaneous screw axis.
운동의 허용공차를 이용한 RSSS-SC 현장장치의 기구학적 설계
김선평,심재경 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.11
In synthesizing and RSSS-SC mechanism that is the kinematic model of the McPherson strut suspension system in automobiles, the design equations for R-S, S-S and S-C dyads should be solved separately for a given set of prescribed positions. The number of prescribed positions that the RSSS-SC mechanism can be synthesized is up to three because of the S-C dyad. This limitation may cause unsatisfactory results in synthesized joint positions. This paper presents a kinematic synthesis method to place the joints of an RSSS-SC mechanism in desired boundaries by varying the prescribed positions of the mechanism within acceptable tolerances. The sensitivity analysis of the joint positions is used determine which displacement parameter should be altered to fulfill this task.
근사 합성법을 이용한 5-SS 멀티 링크 현가장치의 기구학적 설계
김선평,심재경,안병의,이언구 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.11
Dimensional Synthesis, which is apart of kinematic synthesis, is to determine the dimensions of a mechanism of preconceived typer for a specified task and prescribed performance. In this paper, in an effort to provide designers with flexibility, a dimensional approximate synthesis method is presented for utilizing prescribed tolerance both the displacement and joint positions of a mechanism to be synthesized. For this, a constrained optimization problem is formulated with displacement parameters and joint positions as variables. The proposed method is applied to the synthesis of a 5-SS multi link suspension mechanism. The method discussed here, however, can be easily applied to any mechanism of which the kinematic constraint equations can be derived.