I certify that I have read this study and that in my opinion it conforms to acceptable
standards of scholarly presentation and is fully adequate, in scope and quality, as a
dissertation for the degree of Doctor of Philosophy.



 Roy C. Harrell, Chair
 Associate Professor of Agricultural
 Engineering


 I certify that I have read this study and that in my opinion it conforms to acceptable
standards of scholarly presentation and is fully adequate, in scope and quality, as a
dissertation for the degree of Doctor of Philosophy.



 Dr. Robert M. Peart
 Graduate Research Professor of
 Agricultural Engineering


 I certify that I have read this study and that in my opinion it conforms to acceptable
standards of scholarly presentation and is fully adequate, in scope and quality, as a
dissertation for the degree of Doctor of Philosophy.



 Dr. eith L. Doty r
 Prof ssor of Electrical Engineering


 I certify that I have read this study and that in my opinion it conforms to acceptable
standards of scholarly presentation and is fully adequate, in scope and quality, as a
dissertation for the degree of Doctor of Philosophy.



 r. John Staudhammer
 Professor of Electrical Engineering


 I certify that I have read this study and that in my opinion it conforms to acceptable
standards of scholarly presentation and is fully adequate, in scope and quality, as a
dissertation for the degree of Doctor of Philosophy.



 Dr. Carl Crane
 Assistant Professor of Mechanical
 Engineering