Hydraulic or pneumatic motors are replacing electromagnetic servomotors in many applications. It is important for engineers and designers to select adequate actuators in given servo applications. In a previous paper, Nakano had predicted the performance of future electric or hydraulic motors after that there have been many advances in actuators. In this paper the performance of hydraulic and pneumatic motors, and electric AC servo and DC motors has been calculated, surveyed, and evaluated on the basis of specifications listed for them in current catalogs and nonpublic data. We selected 765 different kinds of electric motors and 404 different kinds of fluid power motors available in the market. Power density, torque–inertia ratio, power rate, and power rate density were selected as the performance indexes for comparison. Rated power and torque were found to be nearly proportional to motor mass and moment of inertia, respectively. The electromagnetic motors have developed high performance with large rated torque and a smaller moment of inertia. The newly developed small-size hydraulic motor was also included in the performance index, and its characteristics were plotted. The compact size of fluid power actuators has great potential for power rating or quick response.
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ASME/BATH 2013 Symposium on Fluid Power and Motion Control
October 6–9, 2013
Sarasota, Florida, USA
Conference Sponsors:
- Fluid Power Systems and Technology Division
ISBN:
978-0-7918-5608-6
PROCEEDINGS PAPER
Comparative Study on Dynamic Characteristics of Hydraulic, Pneumatic and Electric Motors Available to Purchase
Yutaka Tanaka,
Yutaka Tanaka
Hosei University, Tokyo, Japan
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Sayako Sakama,
Sayako Sakama
Hosei University, Tokyo, Japan
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Kazuo Nakano,
Kazuo Nakano
Tokyo Institute of Technology, Yokohama, Japan
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Hiroshi Kosodo
Hiroshi Kosodo
Takako Industries, Inc., Kyoto, Japan
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Yutaka Tanaka
Hosei University, Tokyo, Japan
Sayako Sakama
Hosei University, Tokyo, Japan
Kazuo Nakano
Tokyo Institute of Technology, Yokohama, Japan
Hiroshi Kosodo
Takako Industries, Inc., Kyoto, Japan
Paper No:
FPMC2013-4459, V001T01A037; 6 pages
Published Online:
February 26, 2014
Citation
Tanaka, Y, Sakama, S, Nakano, K, & Kosodo, H. "Comparative Study on Dynamic Characteristics of Hydraulic, Pneumatic and Electric Motors." Proceedings of the ASME/BATH 2013 Symposium on Fluid Power and Motion Control. ASME/BATH 2013 Symposium on Fluid Power and Motion Control. Sarasota, Florida, USA. October 6–9, 2013. V001T01A037. ASME. https://doi.org/10.1115/FPMC2013-4459
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