KINEMATICS OF AN ADJUSTABLE CAM-LINKAGE MECHANISM FOR A VARIABLE DISPLACEMENT HYDRAULIC MOTOR

Jonatan A Pozo Palacios, John Voth, James D. Van de Ven

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

Displacement adjustment is a key method for controlling hydraulic circuits in practical applications that use pumps and motors. However, the currently available low-speed high-torque (LSHT) motor designs do not provide continuous variable displacement capability. For this reason, this research work introduces a novel kinematic formulation of an adjustable cam-linkage mechanism, which is used to design a variable displacement linkage motor (VDLM). This paper presents a general description of the cam-linkage mechanism formulated with a system of kinematic equations. Next, the process to calculate the linkage limits of motion for different displacements is described, followed by the procedure to adjust the linkage mechanism. Subsequently, the synthesis process of the cam-linkage mechanism applied in a variable displacement hydraulic motor is presented. A physical prototype is designed and built using the selected mechanism and is used for validation purposes. Finally, the paper discusses the model development results, the experimental validation of the linkage mechanism, and draws conclusions. The experimental results show that the linkage kinematics model is accurate, with only minor differences found in experimental piston trajectories which are thoroughly analyzed. The models and concepts presented here have the potential to be used for the design and synthesis of adjustable cam-linkage mechanisms with various topologies.

Original languageEnglish (US)
Title of host publication47th Mechanisms and Robotics Conference (MR)
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791887363
DOIs
StatePublished - 2023
EventASME 2023 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2023 - Boston, United States
Duration: Aug 20 2023Aug 23 2023

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume8

Conference

ConferenceASME 2023 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC-CIE 2023
Country/TerritoryUnited States
CityBoston
Period8/20/238/23/23

Bibliographical note

Publisher Copyright:
Copyright © 2023 by ASME.

Keywords

  • adjustable linkage mechanism
  • cam-linkage
  • hydraulic motor
  • mechanism optimization
  • variable displacement linkage motor

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