2020
DOI: 10.1299/transjsme.20-00238
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Identification of transient characteristics of leveling valve utilizing pneumatically controllable leveling rod (Proposal of a test method and an optimization algorithm using hybrid PSO/gradient method involving narrowing-down of definition area)

Abstract: This paper proposes an identification method for transient characteristic parameters of the leveling valve, especially focusing on the leveling valve which has a dead zone of flow rate and the time delay on starting supply/exhaust operation.The transient characteristics of the leveling valve is crucial to discuss the quasi-static decrement in wheel load when a railway vehicle passes a transition curve. However, it is difficult to identify the transient characteristics through the conventional shaking test beca… Show more

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