| 摘要: |
| 在电动自行车上应用定速巡航功能可以有效提高电动自行车的骑行舒适性和安全性,然而,现有电动自行车定速巡航功能应对不同路况调整能力较弱,为解决上述问题,针对电动自行车巡航工况开展研究,提出基于电动自行车巡航过程中驾驶员意图的车速控制系统,在保证安全性的前提下通过设置变速开关及调速控制阈值,实现巡航过程中电动自行车速度的可调及调速过程的平稳;设定转速变化斜率,抑制巡航退出过程中车辆速度的波动,提高车辆的舒适性;设置转速及转矩波动阈值来判断车辆巡航过程中发生的意外情况,避免发生二次伤害;搭建硬件实验平台,对相应控制策略进行实车测试,实验显示:巡航过程中车速从 15 km / h 过渡到 22 km / h,整个过程车辆的动力没有切断,车速无明显冲击,符合预期目标,表明所设计的控制系统操作简单,响应速度快,提高了巡航过程中电动自行车的安全性、可操作性、舒适性等。 |
| 关键词: 电动自行车 控制策略 巡航变速 调速控制 急停控制 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Speed Control Based on Driver’s Intention in the Course of Electric Bicycle Cruising |
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YANG Zhiyu1, HAN Shenrui2, WEN Haoyu3, MEI Wandan41,2,3,4
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1. Chongqing Key Laboratory of Manufacturing Equipment Mechanism Design and Control, Chongqing Technology and
Business University, Chongqing 400067, China;2. School of Environmental Science and Engineering, Jilin Normal University, Jilin Siping 136000, China;3. Major of Tourism Management, School of Economics and Management, Yanbian University, Jilin Yanbian 133002,
China;4. Chongqing Research Institute, Jilin University, Chongqing 401123, China
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| Abstract: |
| The application of the constant speed cruise function on the electric bicycle can effectively improve the riding comfort and safety of electric bicycles. However, the existing constant speed cruise function of electric bicycles has a weak ability to adjust to different road conditions. In order to solve the above problem, this paper studied the cruise condition of electric bicycle, and proposed a speed control system based on the driver’s intention during electric bicycle cruising. Under the premise of ensuring safety, by setting the variable speed switch and the speed control threshold, the speed of the electric bicycle under cruising conditions was adjustable and the speed regulation process was smooth. The slope of the speed change was set to suppress the fluctuation of the bicycle speed during the cruise exit, so as to improve the comfort of riding the bicycle. The thresholds of rotational speed and torque fluctuations were set to judge unexpected situations during the cruising process of the bicycle to avoid secondary injuries. A hardware experiment platform was built to test the corresponding control strategy on bicycles. The experiment showed that the bicycle speed transited from 15 km/ h to 22 km/ h during the cruise, the bicycle power was not cut off during the whole process, and the bicycle speed had no obvious impact, which was in line with the expected goal. The results show that the designed control system is simple in operation and fast in response, which improves the safety, operability and comfort requirements of electric bicycles during cruising. |
| Key words: electric bicycle control strategy cruise transmission speed control emergency stop contro |
