Design, Development, and Demonstration of a High-Pressure, Overcenter, Variable-Displacement Hydraulic Motor

Document Number: 901794

Date Published: September 1990

Author(s):
William G. Durtschi - Sunstrand Aviation
Magdy Kandil - Sunstrand Aviation
Donald Kilroy - Sunstrand Aviation

Abstract:
This document presents and discusses the design, development, and demonstration of a 3,000 to 8,000 psi (207 to 552 bar) electronically controlled, overcenter, variable-displacement hydraulic motor (VDHM) in which output speed and position control are effected solely through wobble position control. This approach contrasts with traditional systems that are normally controlled through a large servovalve which throttles flow across the motor control ports. By connecting the variable-displacement hydraulic motor (VDHM) directly to supply and return and controlling through wobbler modulation, the need for a large throttling servovalve with its associated flow losses is eliminated. This can result in significant improvement in peak flow consumption, overall efficiency, and package size.

File Size: 1684K
Product Status: In Stock

See other papers presented at Aerotech Conference & Exposition, October 1990, Long Beach, CA, USA, Session: Aerotech Conference & Exposition

Purchase more technical papers and save! With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay. Learn more >