Grip pressure as a measure of task difficulty in compensatory tracking tasks
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Authors
Hickok, John Howard
Subjects
Advisors
Hess, Ronald A.
Date of Issue
1973-09
Date
September 1973
Publisher
Monterey, California : Naval Postgraduate School
Language
eng
Abstract
The feasibility of utilizing the grip pressure exerted on a rigid
control stick as a measure of tracking task difficulty was investigated.
A device was engineered to measure grip pressure independent of control
force. A hybrid computer was used to produce the tracking tasks necessary
in the research and on-line data computation. Compensatory
tracking tasks using K/s, K/s(s+2) and K/s² controlled elements provided
the difficulty levels, from easiest to most difficult.
Results indicate that grip pressure increases significantly with
task difficulty as the operator attempts to reduce his effective time
delay. However, grip pressure also appears to be dependent upon the
"gain" which a human adopts in a particular tracking task. This gain-related
grip pressure may not be related to task difficulty.
Type
Thesis
Description
Series/Report No
Department
Aeronautical Engineering
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.