More and more state-of-the-art robots have employed hydraulic actuating systems. It has a high power-to-weight ratio. Robots with these actuators can bear more payloads and achieve highly dynamic performance. However, the energy consumption is also very high and the system is very complicated comparing to the electronic motor actuated robot. A lot of research has been done to save the energy. Among which the application of springs is one of the most commonly used methods. This paper presents another use of the spring to save the energy by reducing the hydraulic system pressure of a newly built robot called the “Baby Elephant.” The configuration of the spring is designed according to the leg mechanism. The spring gives an assist force in the stance phase of the leg and exerts a passive payload in the swing phase. The maximum cylinder force is then reduced so as to bring down the pump pressure. The energy to be saved depends on how much the hydraulic pressure can be reduced. In this paper, the Baby Elephant is briefly introduced, the design of the springs on saving the energy are described. Simulations and experiments are carried out to confirm the effect.
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Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: xianbao@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: fengg@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: chenkqi@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: xhtian@sjtu.edu.cn
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: zhangjiaqiok@gmail.com
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Research-Article
Spring Parameters Design for the New Hydraulic Actuated Quadruped Robot
Xianbao Chen,
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: xianbao@sjtu.edu.cn
Xianbao Chen
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: xianbao@sjtu.edu.cn
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Feng Gao,
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: fengg@sjtu.edu.cn
Feng Gao
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: fengg@sjtu.edu.cn
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Chenkun Qi,
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: chenkqi@sjtu.edu.cn
Chenkun Qi
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: chenkqi@sjtu.edu.cn
Search for other works by this author on:
Xinghua Tian,
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: xhtian@sjtu.edu.cn
Xinghua Tian
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: xhtian@sjtu.edu.cn
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Jiaqi Zhang
Shanghai Jiao Tong University,
Shanghai 200240,
e-mail: zhangjiaqiok@gmail.com
Jiaqi Zhang
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: zhangjiaqiok@gmail.com
Search for other works by this author on:
Xianbao Chen
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: xianbao@sjtu.edu.cn
Feng Gao
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: fengg@sjtu.edu.cn
Chenkun Qi
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: chenkqi@sjtu.edu.cn
Xinghua Tian
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: xhtian@sjtu.edu.cn
Jiaqi Zhang
School of Mechanical Engineering
,Shanghai Jiao Tong University,
800 Dongchuan Road
,Shanghai 200240,
China
e-mail: zhangjiaqiok@gmail.com
Contributed by the Mechanisms and Robotics Committee of ASME for publication in the JOURNAL OF MECHANISMS AND ROBOTICS. Manuscript received May 13, 2013; final manuscript received September 29, 2013; published online January 7, 2014. Assoc. Editor: J.M. Selig.
J. Mechanisms Robotics. May 2014, 6(2): 021003 (9 pages)
Published Online: January 7, 2014
Article history
Received:
May 13, 2013
Revision Received:
September 29, 2013
Citation
Chen, X., Gao, F., Qi, C., Tian, X., and Zhang, J. (January 7, 2014). "Spring Parameters Design for the New Hydraulic Actuated Quadruped Robot." ASME. J. Mechanisms Robotics. May 2014; 6(2): 021003. https://doi.org/10.1115/1.4025754
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