http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
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.
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.
이재길(JaeKil Lee),김선평(SeonPyung Kim),오영호(YoungHo Oh) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
A new method that can accurately calculate kingpin axes of all suspension types is proposed. Methods using instant axis theory are widely used to determine the kingpin axis of a suspension system. In these methods, since a suspension system has two degrees of freedom, it is commonly used to find a kingpin axis during steer motion by constraining other motion such as bump-rebound motion. Constraining the motion, however, deteriorates the accuracy of the results. In this study, four constraint wrenches that come from suspension links and the definition of a kingpin axis are used to extract the position of the kingpin axis without any extra assumption. To solve four linear equations from wrench axes and one quadratic equation from kingpin axis definition, singular value decomposition method is used. Using numerical examples that consist of McPherson strut, double wishbone, and multi-link suspension systems, accuracy and versatility of the proposed method is shown.