On Synchronization of Rotating Machines with Alternating Flow Hydraulics : Part 1, Synchronizing Rotating Motion Under Limited Power Source

Tanaka, Yoshito

doi:10.1299/jsme1958.23.970

Cited by 1 publication

(2 citation statements)

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“…The ring is fixed. The star is rotated by an eccentric cam shaft (4). The shaft end with smaller diameter, having its longitudinal axis coincident with the geometric central axis of the working profile of ring , is rotated by any means or prime mover.…”

Section: Working Principlementioning

confidence: 99%

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A Novel Torque Amplifier Using Alternating Flow Hydraulics and Orbital Rotary Piston Hydraulic Motor Principles-Design and Performance

Choudhuri

Patra

Maiti

2002

Proceedings of the JFPS International Symposium on Fluid Power

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The kinematic design methodology of a proposed hydrostatic machine [1] which comprises of (i) multi-piston pump with each chamber connected to corresponding chamber, with flexible or rigid piping, of an orbital rotary piston (ORBIT**) motor , (ii) a charge pump to compensate leakage and (iii) necessary circuit and valves, is presented. It works on the principles of alternating flow hydraulics (AFH) and hydrostatic transmission (HST) with Orbital rotary piston machines (ROPIMA). Earlier AFH-HST systems with cylindrical piston pump and motor, having transmission ratio of 1:1, exhibited high efficiency in comparison to the DC HST of same capacity, as there is less loss due to the absence of flow distributor valve [2,3]. Torque amplification is a unique additional advantageous feature of the proposed machine. The transmission ratio i.e., torque amplification or speed reduction ratio equals to the number of phases (piston) or one less depending upon the kinematic arrangement. A prototype is made and some aspects of performances are studied. It's possible application ranges from reduction unit in general to the articulated joint such as robot wrist actuator etc .

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Section: Working Principlementioning

confidence: 99%

“…During the late 1960s and ' 70s it took renewed interests; models were developed and various aspects of AFH were investigated, as reported by Dasgupta [3], who patented, built and tested a model ( Figure-2). Some deeper technical aspects of synchronization of motions in AFH, were studied by various researchers such as Tanaka [4].…”

Section: Introductionmentioning

confidence: 99%