<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="static/style.xsl"?><OAI-PMH xmlns="http://www.openarchives.org/OAI/2.0/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/ http://www.openarchives.org/OAI/2.0/OAI-PMH.xsd"><responseDate>2026-09-19T01:27:23Z</responseDate><request verb="GetRecord" identifier="oai:dspace.mit.edu:1721.1/54477" metadataPrefix="dim">https://dspace.mit.edu/server/oai/request</request><GetRecord><record><header><identifier>oai:dspace.mit.edu:1721.1/54477</identifier><datestamp>2022-01-13T07:54:36Z</datestamp><setSpec>com_1721.1_7582</setSpec><setSpec>com_1721.1_7581</setSpec><setSpec>col_1721.1_131024</setSpec></header><metadata><dim:dim xmlns:dim="http://www.dspace.org/xmlns/dspace/dim" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:doc="http://www.lyncode.com/xoai" xsi:schemaLocation="http://www.dspace.org/xmlns/dspace/dim http://www.dspace.org/schema/dim.xsd">
   <dim:field mdschema="dc" element="contributor" qualifier="advisor" lang="en_US">Ian W Hunter.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="author" lang="en_US">Hummel, Robert A. (Robert Andrew)</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="other" lang="en_US">Massachusetts Institute of Technology. Dept. of Mechanical Engineering.</dim:field>
   <dim:field mdschema="dc" element="contributor" qualifier="department">Massachusetts Institute of Technology. Department of Mechanical Engineering</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="accessioned">2010-04-28T15:38:07Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="available">2010-04-28T15:38:07Z</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="copyright" lang="en_US">2009</dim:field>
   <dim:field mdschema="dc" element="date" qualifier="issued" lang="en_US">2009</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="uri">http://hdl.handle.net/1721.1/54477</dim:field>
   <dim:field mdschema="dc" element="identifier" qualifier="oclc" lang="en_US">556229812</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2009.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Cataloged from PDF version of thesis.</dim:field>
   <dim:field mdschema="dc" element="description" lang="en_US">Includes bibliographical references (p. 38).</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="abstract" lang="en_US">This thesis presents the design and fabrication of a 2-DOF robotic leg using linear Lorentz-force actuators arranged in a parallel configuration. The decision to use linear actuators, a parallel architecture, and Lorentz-force motors was made because of distinct differences between these designs and the alternatives, notably, their lower weight, better resolution, and high bandwidth. We have shown that a robot of this construction can jump at least three times as high as the stroke length of its actuators, recording a maximum jump height of 48 mm using a stroke of 15 mm. This finding supports the feasibility of a larger robot based on this design.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="statementofresponsibility" lang="en_US">by Robert A. Hummel.</dim:field>
   <dim:field mdschema="dc" element="description" qualifier="degree" lang="en_US">S.B.</dim:field>
   <dim:field mdschema="dc" element="format" qualifier="extent" lang="en_US">39 p.</dim:field>
   <dim:field mdschema="dc" element="language" qualifier="iso" lang="en_US">eng</dim:field>
   <dim:field mdschema="dc" element="publisher" lang="en_US">Massachusetts Institute of Technology</dim:field>
   <dim:field mdschema="dc" element="relation" qualifier="requires" lang="en_US">CD-ROM contains 14 files in .avi format and a copy of the thesis in .doc format.</dim:field>
   <dim:field mdschema="dc" element="rights" lang="en_US">M.I.T. theses are protected by 
copyright. They may be viewed from this source for any purpose, but 
reproduction or distribution in any format is prohibited without written 
permission. See provided URL for inquiries about permission.</dim:field>
   <dim:field mdschema="dc" element="rights" qualifier="uri" lang="en_US">http://dspace.mit.edu/handle/1721.1/7582</dim:field>
   <dim:field mdschema="dc" element="subject" lang="en_US">Mechanical Engineering.</dim:field>
   <dim:field mdschema="dc" element="title" lang="en_US">Design and fabrication of a two degree-of-freedom hopping robot with parallel architecture using linear Lorentz-force actuators</dim:field>
   <dim:field mdschema="dc" element="title" qualifier="alternative" lang="en_US">Design and fabrication of a 2 degree-of-freedom hopping robot with parallel architecture using linear Lorentz-force actuators</dim:field>
   <dim:field mdschema="dc" element="title" qualifier="alternative" lang="en_US">Design and fabrication of a 2-DOF hopping robot with parallel architecture using linear Lorentz-force actuators</dim:field>
   <dim:field mdschema="dc" element="title" qualifier="alternative" lang="en_US">Two degree-of-freedom hopping robot with parallel architecture using linear Lorentz-force actuators</dim:field>
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   	&lt;Title>Design and fabrication of a two degree-of-freedom hopping robot with parallel architecture using linear Lorentz-force actuators&lt;/Title>
   	&lt;Subtitle>Design and fabrication of a 2 degree-of-freedom hopping robot with parallel architecture using linear Lorentz-force actuators&lt;/Subtitle>
   	&lt;Subtitle>Design and fabrication of a 2-DOF hopping robot with parallel architecture using linear Lorentz-force actuators&lt;/Subtitle>
   	&lt;Subtitle>Two degree-of-freedom hopping robot with parallel architecture using linear Lorentz-force actuators&lt;/Subtitle>
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   	&lt;PublicationDate>2009&lt;/PublicationDate>
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        	&lt;DisplayName>Hummel, Robert A. (Robert Andrew)&lt;/DisplayName>
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            &lt;DisplayName>Massachusetts Institute of Technology&lt;/DisplayName>
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    &lt;License>http://dspace.mit.edu/handle/1721.1/7582&lt;/License>
    &lt;Keyword>Mechanical Engineering.&lt;/Keyword>
   	&lt;Abstract>This thesis presents the design and fabrication of a 2-DOF robotic leg using linear Lorentz-force actuators arranged in a parallel configuration. The decision to use linear actuators, a parallel architecture, and Lorentz-force motors was made because of distinct differences between these designs and the alternatives, notably, their lower weight, better resolution, and high bandwidth. We have shown that a robot of this construction can jump at least three times as high as the stroke length of its actuators, recording a maximum jump height of 48 mm using a stroke of 15 mm. This finding supports the feasibility of a larger robot based on this design.&lt;/Abstract>
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