مقاله A continuously variable hydraulic pressure converter based on high-speed on

خلاصه مقاله

A continuously variable hydraulic pressure converter utilizing high-speed on–off valves is studied in this paper. The hydraulic pressure converter is analogous to a switchmode buck converter in power electronics. Substituting the electronic components in the buck converter with their hydraulic counterparts, a hydraulic pressure converter is built. The steady state and fluctuation characteristics of the hydraulic pressure converter are studied in both the theoretical analysis and the simulation. The hydraulic pressure converter was built and tested. Experimental results show that the system output pressure can be continuously adjusted by changing the duty ratio of the PWM signal supplied to the high-speed on–off valve. Although there is fluctuation on the output pressure, the system output pressure has a quasi linear relationship with the PWM signal duty ratio. Results also show that the output pressure fluctuation is greatly influenced by the PWM signal frequency and the flywheel inertia. The hydraulic pressure converter based on high-speed on–off valves brings a new way to transform system pressure continuously.

نویسندگان

Feng Wang [ State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, Zhejiang 310027, China ]

Linyi Gu [ State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, Zhejiang 310027, China ]

Ying Chen [ State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou, Zhejiang 310027, China ]

کلمات کلیدی

Hydraulic pressure converter Pressure buck converter Pressure transform Switching hydraulic system High speed on–off valve

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مشاهده مقالات

Mechatronics 2011

The Science of Intelligent Machines Mechatronics is the synergistic combination of precision mechanical engineering, electronic control and systems thinking in the design of products and manufacturing processes. It relates to the design of systems, devices and products aimed at achieving an optimal balance between basic mechanical structure and its overall control. The purpose of this journal is to provide rapid publication of topical papers featuring practical developments in mechatronics. It will cover a wide range of application areas including consumer product design, instrumentation, manufacturing methods, computer integration and process and device control, and will attract a readership from across the industrial and academic research spectrum. Particular importance will be attached to aspects of innovation in mechatronics design philosophy which illustrate the benefits obtainable by an a priori integration of functionality with embedded microprocessor control. A major item will be the design of machines, devices and systems possessing a degree of computer based intelligence.

حوزه های تحت پوشش : mechanical engineering , electronic control , systems thinking