Utilization of Statistical Techniques in a Two Step Parameter Estimation for a Hydraulic Valve Mechanical Engineering Department, University of Saskatchewan

Format:

Conference/Event

Author/Creator:

Ansarian, Alireza, author.

Conference Name:

International Off-Highway & Powerplant Congress (2002-03-19 : Las Vegas, Nevada, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2002

Summary:

AbstractThis paper investigates two well known parameter estimation techniques, the ordinary least squares and the maximum likelihood methods, for parameter estimation in the main spool of a solenoid proportional valve. The methods are relatively easy to apply and are applied in two steps. The first step consists of operation with closed outlet portraits This eliminates flow forces on the spool enabling the spring constant and precompression to be estimated. These values are then used in the next step, which is the open port case, to estimate valve orifice area gradient and dead band. The results agreed quite well with experimental values determined using a graphical technique for spring constant and pre-compression. However, estimations of the dead band and orifice area gradient showed a strong temperature dependency, contrary to physical expectation

Notes:

Vendor supplied data

Publisher Number:

2002-01-1395

Access Restriction:

Restricted for use by site license