Using manual tracking performance to tune a specified-negative-amplitude input shaper

2012 ◽  
Author(s):  
James J. Potter ◽  
William Singhose
Keyword(s):  
Tracking Performance ◽  
Manual Tracking ◽  
Input Shaper

scholarly journals Manual Tracking Performance in Patients with Cerebellar Incoordination: Effects of Mechanical Loading

1990 ◽  
Vol 17 (3) ◽  
pp. 275-285 ◽  
Author(s):  
Betty-Lynn Morrice ◽  
Werner J. Becker ◽  
J.A. Hoffer ◽  
Robert G. Lee
Keyword(s):  
High Velocity ◽  
Time Lag ◽  
Normal Subjects ◽  
Elastic Stiffness ◽  
Tracking Performance ◽  
Cerebellar Hemisphere ◽  
Manual Tracking ◽  
Improve Performance ◽  
Oscilloscope Screen ◽  
Flexion Extension

ABSTRACT:Manual tracking performance was studied in five patients with cerebellar incoordination due to unilateral cerebellar hemisphere lesions. The subjects were required to track a target on an oscilloscope screen by moving a cursor controlled by flexion-extension movements of the wrist. In comparison to normal subjects, the cerebellar patients, using their clinically affected arm, demonstrated irregular tracking patterns with inappropriate accelerations and decelerations, numerous high velocity peaks of movement, and an increased time lag between the cursor and the target.The addition of a viscous load provided by feeding back wrist velocity to a torque motor coupled to the apparatus resulted in significant improvement in tracking performance and suppression of the high velocity peaks. Increasing elastic stiffness by feeding back wrist position or inertial load by adding weights to the hand did not improve performance on this task. It is proposed that a hypotonic cerebellar limb behaves like an underdamped mechanical system. The addition of viscous loads helps restore more normal damping during voluntary movements of the arm.

A Dynamical Systems Approach to Manual Tracking Performance

2000 ◽  
Vol 32 (4) ◽  
pp. 361-378 ◽  
Author(s):  
Min-Ju Liao ◽  
Richard J. Jagacinski
Keyword(s):  
Dynamical Systems ◽  
Systems Approach ◽  
Tracking Performance ◽  
Manual Tracking

Impairments of manual tracking performance during spaceflight: more converging evidence from a 20-day space mission

Ergonomics ◽  
2000 ◽  
Vol 43 (5) ◽  
pp. 589-609 ◽  
Author(s):  
Dietrich Manzey ◽  
Bernd Lorenz ◽  
Herbert Heuer ◽  
Jorg Sangals
Keyword(s):  
Space Mission ◽  
Tracking Performance ◽  
Manual Tracking

An Experimental Study of Image Motion Compensation Tracking for Earth Reconnaissance from Space

1967 ◽  
Vol 9 (2) ◽  
pp. 105-118
Author(s):  
Michael L. Hershberger
Keyword(s):  
Control System ◽  
Motion Compensation ◽  
Performance Criterion ◽  
Tracking Performance ◽  
Image Motion ◽  
Manual Tracking ◽  
Experimental Conditions ◽  
Tracking Mode ◽  
Controller Gain ◽  
Computer Aided

An experiment was conducted to investigate man's ability to perform image motion compensation tracking for earth reconnaissance from space. The study investigated: (1) two control system tracking modes—computer-aided tracking and manual tracking, (2) control dynamics—rate and acceleration, (3) controller gain—low, medium, and high, and (4) magnification—1 to 200 power. The two control modes were treated in separate studies based on large performance differences observed during pilot studies. A major objective of the study was to determine the type of control system and the amount of magnification necessary to meet a 0.05 mr/sec image motion compensation tracking performance criterion. The results of the investigation revealed that the manual tracking mode was unacceptable in terms of the system performance criterion; whereas, the computer aided tracking mode yielded performance which met the criterion at several combinations of experimental conditions. Magnification and controller gain levels were found to have highly significant effects on tracking performance. The results are discussed in terms of reconnaissance system design applications.

Multiple-Object Tracking

2011 ◽  
Vol 58 (3) ◽  
pp. 196-200 ◽  
Author(s):  
K. Botterill ◽  
R. Allen ◽  
P. McGeorge
Keyword(s):  
Object Tracking ◽  
Cognitive Processes ◽  
Spatial Location ◽  
Multiple Object Tracking ◽  
Tracking Performance ◽  
Multiple Object

The Multiple-Object Tracking paradigm has most commonly been utilized to investigate how subsets of targets can be tracked from among a set of identical objects. Recently, this research has been extended to examine the function of featural information when tracking is of objects that can be individuated. We report on a study whose findings suggest that, while participants can only hold featural information for roughly two targets this task does not affect tracking performance detrimentally and points to a discontinuity between the cognitive processes that subserve spatial location and featural information.

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