ENBIS-8 in Athens

21 – 25 September 2008 Abstract submission: 14 March – 11 August 2008

An Application of Design of Experiments in a Real Lift Test Rig

23 September 2008, 12:20 – 12:40


Submitted by
Elisabeth Viles
E. Viles M. Tanco I. Isasa U. Arteche X. Sagarzazu
TECNUN-University of Navarra & Ikerlan – IK4
A well known Basque lift manufacturer wishes to increase the comfort of their produced lifts, in order to gain a competitive advantage over the competence. Therefore, they wished to study the guiding system, which is the responsible of transmitting vibrations to the cabin avoiding having good comfort for passengers. Consequently, a lift test rig was constructed to simulate the real situation.

The test rig was a device specially designed to carry out the experiments on it. It was built in order to have results extremely correlated to the real situation. The device is 5 metres height, but only 2.3 metres is the useful trip for the lift. And it was constructed in order to make possible the modification of many variables, such as loads, speed, off-centres, guides narrowing, etc.

The experimental goal was to know about the influence of many factors (parameters) on the lift comfort. So the research team chose the Design of Experiments (DoE) techniques as the best techniques available to maximize the information that we would obtain from the experiments.

The first option was to analyze the influence of many factors using to screen a factorial fractional design. However, when we were planning the experiments aroused many complications which were dealt with different literature solution. We finally chose a split-plot design with two dummy factors simulating a three-level factor.

This article shows the steps carried out to plan and analyse the DoE problem, giving special importance to the planning steps along every phases of the DoE application.
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