DesignClinic

Design of a Positioning System for Hydraulic Research Instruments

USGS Team: Sarah Miller, Rachael Shannon, Malaika Kironde

2022-2023: In collaboration with the United States Geological Survey, this student team designed an improved 3-axis positioning system for use in hydraulic testing at the Sylvio O. Conte Research Laboratory in Turners Falls, MA. The facility uses a positioning system to guide measurement instruments within test flumes so researchers can study the impact of water flow patterns on aquatic life.

The team first evaluated the performance and shortcomings of the initial positioning system in use at the facility, and then determined the key design requirements for the project. The team developed several system-level conceptual designs, selecting the one focused on discrete mechanical and control improvements. Through an iterative process, the team redesigned the mounting arm for stability and adjustability, replaced two motors and the motor controller to smooth motion and reduce error, and updated the user interface to allow for more accessible automation. After verifying system performance at Smith and at USGS, the team delivered their final design and recommendation to their liaisons for implementation in future research.