Calibration, information, and control strategies for braking to avoid a collision |
| |
Authors: | Fajen Brett R |
| |
Affiliation: | Department of Cognitive Science, Rensselaer Polytechnic Institute, Carnegie Building 308, 110 8th Street, Troy, NY 12180, USA. fajenb@rpi.edu |
| |
Abstract: | This study explored visual control strategies for braking to avoid collision by manipulating information about speed of self-motion. Participants watched computer-generated displays and used a brake to stop at an object in the path of motion. Global optic flow rate and edge rate were manipulated by adjusting eye-height and ground-texture size. Stopping distance, initiation of braking, and the magnitude of brake adjustments were influenced by both optical variables, but global optic flow rate had a stronger effect. A new model is introduced according to which braking is controlled by keeping the perceived ideal deceleration, based in part on global optic flow rate, within a "safe" region between 0 and the maximum deceleration of the brake. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|