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摘要: 穿戴式柔性下肢助力机器人技术在康复医疗、助老助残、生活起居等方面具有广阔的应用前景, 具有质量轻、体积小、可穿戴性强、人机相容性好等优势.为促进我国柔性下肢助力机器人的研究和发展, 总结国内外在该领域的研究进展, 阐述了多种助力系统的组成、驱动原理和运动学信息等, 分析了各助力系统的辅助力/矩传递规律及其助力效果.同时, 对柔性下肢助力机器人所涉及的安全与可靠性、步态检测技术、驱动方式及控制策略、助力性能评估等关键技术进行了分析.在总结研究成果及分析关键技术的基础上, 指出柔性下肢助力机器人今后的发展方向、研究思路和面临的挑战.对于柔性下肢助力机器人及相关的研究工作, 具有一定的指导意义.Abstract: Soft wearable lower limb power-assisted robots have broad application prospects in the fields of rehabilitation, the elderly and the disabled, daily livings and other aspects of life, with the advantages of light weight, small volume, strong wearable feature, and human-machine compatibility. In order to promote the research and development of the soft wearable robots in China and summarize the research progress in those fields at home and abroad, the components, driving principle and kinematic information of various power assisted systems are discussed and the transfer law of the assistance force/moment and their power-assisted effect are analyzed. Moreover, key techniques such as the safety and reliability, gait detection, driving methods and control strategies, and power-assisted evaluation are analyzed in detail. On the basis of the above analysis, the future development, methods and challenges are presented, which has certain guidances for the related research works.
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Key words:
- Soft limb lower power-assisted robot /
- wearable equipment /
- exoskeleton /
- hip joint /
- gait of lower limb
1) 本文责任编委 邓方 -
表 1 单关节助力型机器人
Table 1 Single joint power-assisted robot
序号 名称 驱动方式 驱动关节 质量(kg) 日本中央大学 / 1 行走助力机器人[29] 气动人工肌肉 髋 - 膝关节柔性助力服[37] 膝 2 日本信州大学[31] PVC凝胶驱动器 髋 0.6 轻质行走助力服 3 延边大学[26] 电机 髋 2.7 可穿戴柔性助力服 4 日本松下电器公司[27] 电机 髋 9.3 交叉线助力服 5 首尔国立大学[28] 电机 膝 - 膝关节助力服 6 日本冈山大学[36] 气压 膝 1.5 下肢助力裤 7 大连理工大学[39] 气压 膝 - 软式气动助力服 8 韩国高等科学技术研究所 电机 踝 - 柔性下肢助力外骨骼[41] 9 麻省理工学院[42] 电机 踝 10.1 移动式踝助力外骨骼 10 哈佛大学[43] 气动人工肌肉 踝 - 柔性仿生主动矫形器 11 新加坡国立大学[45] 气压 踝 - 柔性气动袜 表 2 多关节协同助力型机器人
Table 2 Multi-joint coordinated power-assisted robot
表 3 各驱动方式的优缺点
Table 3 The advantages and disadvantages of each drive
驱动类型 优点 缺点 电机驱动 1)标准化程度高 1)运动平衡性差 2)易实现自动化控制 2)易受到外界负载的影响 3)采用钢丝绳连接, 能量传递方便、信号传递迅速 3)需要输出大功率时, 电机体积大 4)无污染 气压驱动 1)质量轻、结构简单 1)难以密封 2)高功率/质量比 2)不适合低温工作 3)自然柔顺性 3)易压缩, 难以精确控制 4)粘性小, 无污染 4)在有负荷的作用下, 速度易发生变动 -
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