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J. Cent. South Univ. (2020) 27: 3702-3720 DOI: https://doi.org/10.1007/s11771-020-4561-1 MPC-based path tracking with PID speed control for high-speed autonomous vehicles considering time-optimal... the desired path as fast as possible, a novel autonomous vehicle path tracking based on model predictive control (MPC) and PID speed control was proposed for high-speed automated vehicles considering......
J. Cent. South Univ. (2018) 25: 2664-2676 DOI: https://doi.org/10.1007/s11771-018-3944-z Path planning for UAVs formation reconfiguration based on Dubins trajectory CHEN Qing-yang(陈清阳)1, LU Ya-fei... for example, a path planning method based on Dubins trajectory and particle swarm optimization (PSO) algorithm is presented in this paper. The mathematic model of multiple UAVs formation reconfiguration......
J. Cent. South Univ. (2012) 19: 2534-2540 DOI: 10.1007/s11771-012-1307-8 Distribution network planning based on shortest path LU Zhi-ying(路志英), GAO Shan(高山), YAO Li(姚丽) Department... for distribution network routing, an automatic routing method of distribution network planning was proposed based on the shortest path. The problem of automatic routing was divided into two steps in the method......
of Gauss points was selected on the crack propagating path with 1.0 mm interval as depicted in Figure 6. According to the Gaussian point spacing and the fracturing time of each element, the crack... propagation path with high-strength glue, as shown in Figure 3. The first filament of the CPG just coincided with the pre-crack tip to monitor crack initiation time. The CPG filaments will break when the crack......
J. Cent. South Univ. (2019) 26: 2418-2431 DOI: https://doi.org/10.1007/s11771-019-4184-6 Demodulation spectrum analysis for multi-fault diagnosis of rolling bearing via chirplet path pursuit LIU... interpretation. As such, we propose a demodulation spectrum analysis method for multi-fault bearing detection via chirplet path pursuit. First, the envelope signal is obtained by applying Hilbert transform......
crack growth behavior of fatigue tested L-specimen at σa=110 MPa: (a) Crack growth rate; (b) Small crack growth path; (c) Fracture surface Fig.6 Fatigue crack growth behavior of fatigue tested T-specimen at σa=110 MPa: (a) Crack growth rate; (b) Small crack growth path; (c) Fracture surface show the fatigue crack path profiles of the specimen surface. The white arrow shows the crack initiation......
. 3.3.2 裂纹演化 图8 PFC3D模拟试验裂纹演化 Fig. 8 Crack evolution in PFC3D simulation test 图8所示为σ30=5 MPa,σ10=20 MPa时不同中间主应力PFC3D模拟试验裂纹演化图.由图8(a)和图8(b)可知:在不同应力路径下,剪切裂纹数与拉伸裂纹数均随ε1增大而增大,且中间主应力σ2越大,破坏前相同应变ε1下各类裂纹数量......
Energy saving analysis of segment positioning in shield tunneling machine considering assembling path optimizationSHI Hu(施虎)1, 2, GONG Guo-fang(龚国芳)2, YANG Hua-yong(杨华勇)2, MEI Xue-song(梅雪松)1(1. State... into account in the mathematical modeling of energy consumed by each actuator. In order to investigate the relationship between the work done by the actuator and the path moved along by the segment......
, there are massive η'(MgZn2) precipitates and particles like Al2CuMg and Mg32(Al, Zn)49. 3.2 Fatigue crack formation Crossing the crack source zone, we got the cross-section of crack propagation path... to study the fatigue fracture of the T7451 Al-Zn-Mg-Cu alloy (470 ℃, 60 min+115 ℃, 8 h+165 ℃, 16 h). The study reveals mainly the microscopic structure of the alloy in the process of crack formation......