Control of spool position of on/off solenoid operated hydraulic valve by sliding-mode controllerSpringer Science and Business Media LLC - Tập 29 - Trang 5395-5408 - 2015
Jae-Hak Lee, Young-Won Yun, Hyun-Wook Hong, Myeong-Kwan Park
The use of on/off solenoid operated hydraulic valves instead of proportional valves has been attracting the interest of many researchers and engineers. However, there exist difficulties in controlling the on/off valve because of highly nonlinear characteristics including hysteresis and saturation. This paper considers the application of on/off solenoid operated hydraulic valves to control position...... hiện toàn bộ
Modified breathing mechanism model and phase waterfall plot diagnostic method for cracked rotorsSpringer Science and Business Media LLC - Tập 32 - Trang 2527-2539 - 2018
Jingsong Xie, Wei Cheng, Yanyang Zi
Transverse breathing cracks are a primary damage mode in rotor systems and seriously influence the safety and reliability of equipment operation. The vibration characteristics exhibited by cracked rotors when passing through critical speeds serve as important evidence in the diagnosis of cracks, and a breathing mechanism model without weight dominance is needed to study these resonant characterist...... hiện toàn bộ
Contributions of the lower extremity joint on the support moment in normal walking and in unexpected step-down walkingSpringer Science and Business Media LLC - Tập 19 - Trang 371-376 - 2005
Young-Ho Kim, Han Sung Kim, Sung-Jae Hwang, Seong-Sik Myeong, Young-Kwang Keum
ARelative contributions of lower extremity joints on the support moment were investigated in this study Three-dimensional gait analyses were performed in normal walking and in unexpected step-down walking For both gait studies, inverse dynamics were performed to obtain each joint moment of the lower extremity, which was applied to the forward dynamics simulation to determine the contributions on t...... hiện toàn bộ
Thermal deformation and stress analysis of disk brakes by finite element methodSpringer Science and Business Media LLC - Tập 26 - Trang 2133-2137 - 2012
Sung-Soo Kang, Seong-Keun Cho
The present study was conducted to analyze which the geometry of vents in motorcycle disk brakes affects the surface of the disk. In order to analyze the thermal characteristics of disk brakes, thermal deformation analysis and thermal stress analysis due to heat transfer was carried out through the finite element analysis for ventilated disk and solid disk. By comparing the maximum temperature in ...... hiện toàn bộ
A hybrid method of modified NSGA-II and TOPSIS for lightweight design of parameterized passenger car sub-frameSpringer Science and Business Media LLC - Tập 30 - Trang 4909-4917 - 2016
Dengfeng Wang, Rongchao Jiang, Yinchong Wu
This paper presents a hybrid method integrating modified NSGA-II and TOPSIS, used for lightweight design of the front sub-frame of a passenger car. Firstly, the FE model of the sub-frame is constructed and is validated by modal test. Then, the strength performance of the sub-frame is analyzed under four typical load conditions consisting of braking, acceleration, steady state cornering and vertica...... hiện toàn bộ