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Design of a Crank-Slider Spool Valve for Switch-Mode Circuits With Experimental Validation.
- Source :
-
Journal of Dynamic Systems, Measurement, & Control . Jun2018, Vol. 140 Issue 6, p1-9. 9p. - Publication Year :
- 2018
-
Abstract
- A challenge in realizing switch-mode hydraulic circuits is the need for a high-speed valve with fast transition time and high switching frequency. The work presented includes the design and modeling of a suitable valve and experimental demonstration of the prototype in a hydraulic boost converter. The design consists of two spools driven by crank-sliders, designed for 120 Hz maximum switching frequency at a flow rate of 22.7 lpm. The fully open throttling loss is designed for <2% of the rated pressure of 34.5 MPa. The transition time is less than 5% (0.42 ms at 120 Hz) of the total cycle and the duty cycle is adjustable from 0 to 1. Leakage and viscous friction losses in the design are less than 2% of the rated hydraulic energy per cycle. The experimental results agreed well with the model resulting in a 3% variation in transition time. The use of the high-speed valve in a pressure boosts converter demonstrated boost ratio capabilities of 1.08-2.06. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SWITCHING circuits
*HYDRAULIC circuits
*SLIDER-crank mechanisms
Subjects
Details
- Language :
- English
- ISSN :
- 00220434
- Volume :
- 140
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of Dynamic Systems, Measurement, & Control
- Publication Type :
- Academic Journal
- Accession number :
- 129186066
- Full Text :
- https://doi.org/10.1115/1.4038537