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| 1 | 基于MAP的汽车电控制动系统变工况控制研究显示文摘为提高汽车电控制动系统(ECBS)在变工况条件下的实时控制精度,提出了基于MAP图的ECBS控制参数自寻优方法。首先建立基于部件特性的液压制动系统模型和ECBS控制器,在不同的车速下进行制动阶跃试验,应用模拟退火粒子群算法(SAPSO)自寻各工况下最优的PID控制参数,形成MAP图,车辆可根据实际车速和制动踏板力在线查MAP图获得控制参数。仿真和实车试验结果表明,基于MAP图的ECBS系统可有效缩短制动距离并改善制动时的方向稳定性。 | 王莹 王博 郭睿 管欣 徐亮 | 2017 | 汽车技术2017，，3： | 1 |
| 2 | A New System to Evaluate Comprehensive Performance of Hard-Rock Tunnel Boring Machine Cutterheads显示文摘The accurate performance evaluation of a cutterhead is essential to improving cutterhead structure design and predicting project cost. Through extensive research, this paper evaluates the performance of a tunnel boring machine(TBM) cutterhead for cutting ability and slagging ability. This paper propose cutting efficiency, stability, and continuity of slagging as the evaluation indexes of comprehensive cutterhead performance. On the basis of research of true TBM engineering applications, this paper proposes a calculation method for each index. A slagging efficiency index with a ratio of the maximum di erence between the slagging amount and average slagging is established. And a slagging stability index with a ratio of the maximum slagging fluctuation and average slagging is presented. Meanwhile, a cutting efficiency index by the weighed average value of multistage rock fragmentation of a cutter’s specific energy is established. The Robbins and China Railway Construction Corporation(CRCC) cutterheads are evaluated. The results show that under the same thrust and torque, the slagging stability of the CRCC scheme is worse, but the slagging continuity of the CRCC scheme is better. The cutting ability index shows that the CRCC cutterhead is more efficient. | Ye Zhu Wei Sun Junzhou Huo Zhichao Meng | 2019 | Chinese Journal of Mechanical Engineering2019，32，6： | 0 |
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