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Robert Judd

Chair and Russ Professor
Industrial and Systems Engineering
STKR 272
judd@ohio.edu
Phone: 740.593.0106

Robert Judd is the chair of the Industrial and Systems Engineering department He has more than 30 years of academic experience, with more than 20 years at Ohio University. He has collaborated with many major industry partners, including General Electric, Parker Hanafin, General Motors, and Chrysler.


Research Interests: Cost Estimation, Max-plus algebra, Control of Manufacturing Systems, Discrete Event Systems, Simulation, Controls

Publications:

Nambiar, A. and Judd, R., “Max-plus based Mathematical Formulation for Cyclic Permutation Flow-shops,” International Journal of Mathematical Modeling and Numerical Optimization, Vol 2, No. 1, pp 85 - 97, 2011

Imaev, A. and Judd, R., Computing an eigenvector of an inverse Monge matrix in max plus algebra, Discrete Applied Mathematics 158 (2010) 1701 1707.

Masel, D.T., W.A. Young, and R.P. Judd, ""A rule-based approach to predict forging volume for cost estimation during product design."" (2010) The International Journal of Advance Manufacturing Technology, Vol. 46, No. 1-4, pp. 31-41.

A. N. Nambiar, R. P. Judd, J. Greenblatt, “Data Exchange among Different Modules in a Manufacturing or Service Framework,” International Journal of Product Development, 8(2), pp. 122-140, 2009. ** Young, W.A., D.T. Masel, and R.P. Judd, ""A matrix-based methodology for determining a part family’s learning rate."" (2008) Computers & Industrial Engineering, Vol. 54, No. 3, pp. 390-400

Awards:

 Russ Professor

Journal Article, Academic Journal (22)

  • Nambiar, A., Judd, R. Max-Plus based Mathematical Formulation for Cyclic Permutation Flow-shops. 1. Internation Journal of Mathematical Modeling and Numerical Optimization; 2: 85-97.
  • Masel, D., Young, W., Judd, R. A rule-based approach to predict forging volume for cost estimation during product design. 1-4. International Journal of Advanced Manufacturing Technology; 46: 31-41.
  • Imaev, A., Judd, R. Computing an Eigenvector of an Inverse Monge Matrix in Max Plus Algebra. Discrete Applied Mathematics.
  • Young, W., Masel, D., Judd, R. A Matrix-based Methodology for Determining a Part Family's Learning Rate. 3. Computers and Industrial Engineering; 54: 390-400.
  • Zhang, W., Judd, R. Deadlock Avoidance for Flexible Manufacturing Systems with Choices Based on Digraph Circuit Analysis. 2. Asian Journal of Control; 9: 111-120.
  • Koonce, D., Gandhi, R., Nambiar, A., Judd, R. Identifying and Removing Error in Hierarchical Cost Estimates. International Journal of Production Economics; vol. 109(1-2): 41-52.
  • Judd, R., Zhang, W., Deering, P. Necessary and Sufficient Conditions for Deadlocks in Flexible Manufacturing Systems Based on a Digraph Model. 2. Asian Journal of Control; 6.
  • Koonce, D., Judd, R., Sormaz, D., Masel, D. A Hierarchical Cost Estimation Tool. Computers in Industry; 50: 293-302.
  • Koonce, D., Judd, R. A Visual Modeling Language for EXPRESS Schemata. 5. International Journal of Computer Integrated Manufacturing; 14.
  • Dhamija, D., Koonce, D., Judd, R. Development of a Unified Data Meta-Model for CAD-CAPP-MRP-NC Verification Integration. 1-2. Computers and Industrial Engineering; 33: 19-22.
  • Judd, R., Brown, A., Riddick, F. Integration Aspects of a Manufacturing Engineering Toolkit. 1-4. International Journal on Computer Integration; 10: 142-159.
  • Koonce, D., Judd, R., Parks, C. Manufacturing Systems Engineering and Design: An Intelligent, Multimodel, Integration Architecture. 6. International Journal on Computer Integration; 9: 443-453.
  • Parks, C., Koonce, D., Rabelo, L., Judd, R., Sauter, J. Model-Based Manufacturing Integration: A Paradigm for Virtual Manufacturing Systems Engineering. 1-4. Computers in Industrial Engineering; 27: 357-360.
  • Judd, R. An Interpolation Technique for Improved Robot Tracking Accuracy. 5. Mechatronics; 3: 647-658.
  • Abell, J., Judd, R. Perturbation Analysis of Structurally Modified Discrete Event Systems. 3. Transactions of the Society for Computer Simulation; 10: 185-204.
  • Judd, R., Knasinski, A. A Technique to Calibrate Industrial Robots with Experimental Verification. 1. IEEE Journal of Robotics and Sutomation; 6: 20-31.
  • Parunak, H., Judd, R. Sharpening the Focus on Intelligent Control. 1. International Journal of Computer Integrated Manufacturing; 3: 1-5.
  • Sangeorzan, B., Judd, R., Sangeorzan, B. A Mathematically-Directed Single Cut Osteotomy, with Application to Tibia Vara. 11/12. Journal of Biomechanics; 22: 1271-1278.
  • Van Til, R., Judd, R. A Method for Constructing a Digital Model of a Continuous-Time System. 2. Transactions of the Society of Computer Simulation; 6: 131-151.
  • Judd, R., Van Til, R. Application of Discrete Time Quantized Data Controllers to Systems with Disturbances. 6. International Journal of Control; 48: 2201-2207.
  • Parunak, H., Judd, R. LLAMA: A Layered Logical Architecture for Material Administration. 4. International Journal of Computer Integrated Manufacturing; 1: 222-233.
  • Judd, R., Van Til, R., Stuckman, P. Discrete Time Quantized Data Systems. 4. International Journal of Control; 46: 1225-1233.

Technical Report (1)

  • Judd, R., Sormaz, D., Koonce, D., Zhang, W. Cost Elements Version 1.0 User Manual FIPER Technical Report. Ohio University.

Conference Proceeding (106)

  • Singh, M., Judd, R. A Graph Algorithm for Efficient Performance Evaluation of a Job Shop. 19. International Journal of Production Systems; 52: 5880-5894.
  • Singh, M., Judd, R. Efficient Modeling of a Job Shop with Reciculation of Jobs. Industrial and Systems Engineering Research Conference.
  • Singh, M., Judd, R. Heuristic Algorithm for Minimizing Makespan of Job Shops. Industrial and Systems Engineering Research Conference.
  • Singh, M., Judd, R. Efficient performance evaluation of a job shop using max-plus algebra. 2012 Industrial Engineering Research Conference.
  • Judd, R., Patlola, P., Singh, M. Block-Diagram Approach for Efficient Evaluation of Performance Using Max-Plus Algebra. IERC 2011.
  • Sormaz, D., Judd, R., Masel, D. Cost Estimation of Jet Engine and Jet Turbine Parts using Integration of Hierarchical Feature Modeling and Manufacturing Knowlege. 21st International Conference on Production Research -2011.
  • Judd, R., Singh, M., Patlola, P. Using Min-Plus Algebraic Techniques to Model Manufacturing Systems. IERC 2011.
  • Patlola, P., Judd, R. Efficient Evaluation of Manufacturing Systems Performance Using Max-Plus Algebra. 2010 Industrial Engineering Research Conference.
  • Lynch, D., Sormaz, D., Masel, D., Judd, R. Methodology To Generate Geometric and Feature Models for Cost Estimation of Rotational Components. 2010 Industrial Engineering Research Conference.
  • Imaev, A., Judd, R. Signal Flow Graphics over Max-Plus Algebra and Applications. 2010 American Control Conference.
  • Masel, D., Dowler, J., Judd, R. Adapting bottoms-Up Cost Estimating Relationships to New Systems. 2010 International Society of Parametric Analysis/Society of Cost Estimation and Analysis Conference & Training Workshop.
  • Masel, D., Judd, R. Parametric Cost-Estimation of an Assembly using Component-Level Cost Estimates. Industry, CA: International Society of Parametric Analysts/Society of Cost Estimating & Analysis Joint Conference.
  • Masel, D., Judd, R. Using Bottoms-Up Cost Estimating Relationships in a Parametric Cost Estimation System. New Orleans, LA: International Society of Parametric Analysts/Society of Cost Estimating & Analysis Joint Conference.
  • Judd, R., Nambiar, A. Scheduling and Buffer Allocation for the Cyclic Permutation Flow-Shops using Max-Plus based Formulation. Nashville, TN: 16th Industrial Engineering Research Conference (IERC); CD-ROM.
  • Masel, D., Judd, R. A Method for Bottoms-Up Cost Estimation with Parametric Inputs. Orlando, FL: 2006 Industrial Engineering Research Conference.
  • Young, W., Masel, D., Judd, R. Learning Rates with Confidence Limits for Part Families from Noisy Data. Orlando, FL: 2006 Industrial Engineering Research Conference.
  • Koonce, D., Ghandi, R., Judd, R. Calibration and Algorithmic Approach. Fort Worth, TX: 2005 Conference on Next Generation Concurrent Engineering.
  • Sormaz, D., Koonce, D., Judd, R. Manufacturing Knowledge Capture for FIPER Cost Estimation Tool. Fort Worth, TX: 2005 Conference on Next Generation Concurrent Engineering.
  • Judd, R., Zhang, W. Deadlock Avoidance Algorithm for Flexible Manufacturing Systems by Calculating the Effective Free Space OD Circuits. Portland, OR: 2005 ACC.
  • Judd, R., Drews, F., Lawrence, D., Juedes, D., Leal, W., Deshpande, J., Welch, L. QoS-Based Resource Allocation in Dynamic Real-Time Systems. Portland, OR: Proceedings of the 2005 American Control Conference; 1745 – 1751.
  • Judd, R., Zhang, W. Deadlock Avoidance for Flexible Manufacturing Systems with Choices Based on Digraph Circuit Analysis. Boston, MA: 2004 American Control Conference; 3333-3338.
  • Koonce, D., Sormaz, D., Masel, D., Judd, R. Cost Estimation Methodology using Hybrid Hierarchical Approach. Houston, Texas: 13th Industrial Engnieering Research Conference IERC 2004.
  • Sormaz, D., Judd, R., Koonce, D., Nambiar, A. Development of Cost Library for Manufacturing Processes in Cost Estimation Tool. Houston, Texas: 13th Industrial Engineering Reseawrch Conference IERC-2004.
  • Judd, R., Zhang, W., Deering, P. Evaluating Order of Circuits for Deadlock Avoidance in a Flexible Manufacturing system. Denver, CO: 2003 American Control Conference; 3679-3683.
  • Judd, R., Zhang, W., Lipset, R. Synthesize Deadlock Free digraph Models for the Simulation of Flexible Manufacturing Systems. San Diego, CA: 2002 Summer Computer Simulation Conference.
  • Judd, R., Zhang, W., Lipset, R. Deadlock Avoidance in Manufacturing Systems with a Multiple Resource Request Model. Anchorage, AK: 2002 American Control Conference; 4443-4449.
  • Koonce, D., Trasi, A., Judd, R. Cost Estimation with Feature Recognition. Las Vegas, NV: 5th International Conference on Engineering Design and Automation; 208-222.
  • Ma, Q., Judd, R., Lipset, R. Distributed Manufacturing Simulation Environment. Orlando, FL: 2001 Summer Computer Simulation Conference.
  • Lipset, R., Judd, R., , W. Deadlock Avoidance in Manufacturing Systems with Non-Deterministic Part Routings. Arlington, VA: 2001 American Control Conference; 4930-4936.
  • Koonce, D., Judd, R., Keyser, T., VerDuin, B., Bailey, M., Kolonay, R., Wujek, B., Cawley, N., Benejamin, M. A Federated Intelligent Product Environment (FIPER). Orlando, FL: 4th International Conference on Engineering Design and Automation; 106-109.
  • Koonce, D., Judd, R., Keyser, T. A Cost Estimation Tool Integrated into FIPER. Melbourne, Australia: 4th International Conference on Design of Information Infrastructure Systems for Manufacturing.
  • Judd, R., Deering, P., Lipset, R. A Deadlock Avoidance and Scheduling Alforithm for Simulation of Product Flow in a Flexible Manufacturing System. Vancouver, BC: 2000 Summer Computer Simulation Conference; 797-802.
  • Judd, R., Zhang, W., Lipset, R. A Scalable Deadlock Avoidance Algorithm for Flexible Manufacturing Systems with Mixed Choices in Part Routing. Vancouver, BC: 2000 Summer Computer Simulation Conference; 135-141.
  • Judd, R., Zhang, W., Deering, P., Lipset, R. A Scalable Deadlock Avoidance Algorithm for Flexible Manufacturing Systems with Free Choice in Part Routing. Chicago, IL: 2000 American Control Conference; 3545-3548.
  • Koonce, D., Judd, R., Majeti, V. An Integration of Common Manufacturing Design Tools using the IMDE Architecture. Vancouver, BC: 3rd International Conference on Engineering Design and Automation; 746-752.
  • Judd, R., Nie, C., Koonce, D. VQL, A Visual Query Language for STEP Data Files. Vancouver, BC: 3rd International Conference on Engineering Design and Automation; 545-552.
  • Judd, R., Zhang, W., Deering, P., Lipset, R. A Diagraph-Based Deadlock Avoidance Policy for Automated Manufacturing Systems with Multiple Capacity Resources. Chicago, IL: 1999 Summer Computer Simulation Conference.
  • Lipset, R., Judd, R., Deering, P., Zhang, W., Caw, J. Classification of Part Movements for Deadlock Avoidance in Manufacturing Systems. San Diego, CA: 1999 American Control Conference; 1971-1975.
  • Koonce, D., Judd, R., Nie, C. VQL, A Visual Query Language for EXPRESS. Phoenix, AZ: 1999 Industrial Engineering Research Conference.
  • Koonce, D., Dhamija, D., Judd, R. Using Meta-Date to Integrate Cost Estimation into the Manufacturing Design Process. Long Beach, CA: 1999 NSF Design and Manufacturing Grantees Conference.
  • Judd, R., Deering, P., Lipset, R. A Stack-Based Recursive Algorithm for Deadlock Avoidance in Simulations of Manufacturing Systems with Multiple Capacity Resources. Reno, NV: 1998 Summer Computer Simulation Conference; 33-38.
  • Koonce, D., Judd, R. An EXPRESS Based Integration of CIM Tools. Maui, HI: 2nd International Conference on Engineering Design and Automation.
  • Dhamija, D., Koonce, D., Judd, R. Consistency Issues in Manufacturing Data Integration. Maui, HI: 2nd International Cnoference on Engineering Design and Automation.
  • , R., Deering, P., Judd, R. A Stack-Based Algorithm for Deadlock Avoidance in Flexible Manufacturing Systems. Philadelphia, PA: 1998 American Control Conference; 1252-1256.
  • Judd, R., Dhamija, D., Koonce, D. The Integration of Data from Multiple Heterogeneous Manufacturing Software Systems. 7th Industrial Engineering Research Conference.
  • Koonce, D., Dhamija, D., Judd, R. An Integrated Model for Manufacturing Information Exchange. 6th Industrial Engineering Research Conference; 531-536.
  • Lipset, R., Deering, P., Judd, R. Deadlock Detection in Simulations of Manufacturing Systems. Arlington, VA: 1997 Summer Computer Simulation Conference; 317-322.
  • Lipset, R., Deering, P., Judd, R. Necessary and Sufficient Conditions for Deadlock in Manufacturing Systems. Albuquerque, NM: 1997 American Control Conference; 1022-1027.
  • Judd, R. Computer Aided Process Planning and Programming. Detroit, MI: 1996 Autofac Conference.
  • Judd, R., Abell, J. Off-Line Programming of Manufacturing Systems Using Simulation. Portland, OR: 1996 Summer Computer Simulation Conference.
  • Parks, C., Koonce, D., Judd, R. Model Based Engineering Software Systems Integration. Minneapolis, MN: 1996 Industrial Engineering Reseasrch conference; 742-757.
  • Judd, R., Renuka, S., Kashyap, M., Parks, C. Intelligent Machining Workstation. Ottawa, Ontario: 1995 Summer Computer Simulation cnoference.
  • Judd, R., Faiz, T. Deadlock Detection and Avoidance of a Class of Manufacturing System. Seattle, WA: 1995 Automatic Controls Conference; 3637-3641.
  • Judd, R., Faiz, T. Models and Deadlock Avoidance for a Class of Manufacturing System. San Diego, CA: 1994 Summer Computer Simulation Conference; 601-606.
  • Judd, R., Faiz, T. Optimal Deadlock Avoidance of a Class of Manufacturing System. Baltimore, MD: 1994 Automatic Controls Conference; 707-711.
  • Abell, J., Judd, R. Perturbation Analysis of Object-Oriented Discrete Event System. San Francisco, CA: 1993 Automatic Controls Conference; 2293-2297.
  • Sauter, J., Judd, R. Integrating IDEF Process and Information Models with Object Oriented Design. 1993 IDEF Users Group Meeting.
  • Abell, J., Judd, R. Perturbation Anaslysis of Discrete Event Systems with Aggregated Objects. Boston, MA: 1993 Summer Computer Simulation Conference.
  • Abell, J., Judd, R. An Object-Oriented Formalism for Modeling Discrete Event Systems. San Diego, CA: 1993 Winter Simulation Multi-Conference.
  • Hideg, L., Judd, R. Sufficient Condition for the Stability of Linear Time Varying Learning Control Systems: A Robotic Application. Glasgow, Scotland: 1992 IEEE Internatinoal Symposium on Intelligent Control.
  • Abell, J., Judd, R. Object Oriented Perturbation Analysis of Discrete Event Systems. Reno, NV: 1992 Summer Computer Simulation Cnoference; 164-169.
  • Abell, J., Judd, R. A Model and Algorithm for the Analysis of Discrete Event Systems with Structural Changes. Chicago, IL: 1992 Automatic Controls Conference; 3206-3210.
  • Hideg, L., Judd, R. Coefficient Test for Discrete Time Learning Systems Stability. Chicago, IL: Symposium on the Fundamentals of Discrete Time Systems.
  • Hideg, L., Judd, R. Stability Analysis for Discrete Time Learning Systems: Sufficiency by Lyapunov and Necessity by Z Domain. Chicago, IL: 1992 American Controls Conference; 1112-1114.
  • Sauter, J., Judd, R. XSpec: The Modeling and Design of Complex Systems. Stanford University, Palo Alto, CA: DARPA Workshop on Information Technology for Manufacturing and Concurrent Engineering.
  • Sauter, J., Judd, R. Next Generation Planning Environments for Factory Control. Chicago, IL: International Control Engineering Conference.
  • Hideg, L., Judd, R., Van Til, R. Coefficient Test for Discrete Learning Systems Stability. London, England: 1991 Conference on Decision and Control.
  • Judd, R. An Interpolation Technique for Improved Robot Tracking Accuracy. Atlanta, GA: 1991 ASME Winter Annual Conference.
  • Abell, J., Judd, R. Perturbation Analysis for Systems with Structural Changes. Baltimore, MD: 1991 Summer Computer Simulation Conference; 104-109.
  • Sauter, J., Judd, R., VanderBok, R. XFaST: Integrated Tools for the Design of Manufacturing Systems. Honolulu, HI: 1991 International Conference on Design Productivity; 833-838.
  • Judd, R., Sauter, J., VanderBok, R. XSpec: A Methodology for the Integrated Design of Manufacturing Systems. Honolulu, HI: 1991 International Conference on Design Productivity; 393-398.
  • Judd, R., Sauter, J. Applying Integrated Tools to the Design of Manufacturing Systems. Detroit, MI: 1990 SME Autofac Conference.
  • Hideg, L., Judd, R., Van Til, R. Stability Analysis for Learning Systems. 1990 American Conrols Conference.
  • Judd, R., VanderBok, R., Brown, M., Sauter, J. Manufacturing Systems Design Methodology: Execute the Specification. 1990 CIMCON Conference, NIST Special Publication 785; 785: 133-152.
  • Judd, R., Hideg, L. Analysis of Two Step Learning Systems. Pittsburgh, PA: American Controls Conference.
  • Van Til, R., Judd, R. Application of Descrete Time Quantized Data Controllers to Nonlinear Systems. Pittsburgh, PA: American Controls Conference.
  • Judd, R., Van Til, R. A Procedure for Quantizing Time-Invariant Systems. Pittsburgh, PA: 20th Pittsburgh Conference on Modeling and Control.
  • Hideg, L., Judd, R. Frequency Analysis of Learning Systems. Austin, TX: 1988 Controls and Decision Conference.
  • Sangeorzan, B., Hansen, S., Judd, R., Sangeorzan, B. A Mathematically Directed Single Cut Osteotomy for Correction of Long Bond Deformity, with Application to Tibia Vara. Dallas, TX: Fourth Annual Orthopedic Trauma Meeting.
  • Hideg, L., Judd, R. Velocity Profile Generation of a Robotic Manipulator to Minimize Tracking Error. 1988 American Controls Conference.
  • Van Til, R., Judd, R. Discrete Time Quantized Controllers for Tracking. Pittsburgh, PA: 19th Pittsburgh Conference on Modeling and Control.
  • Cole, J., Judd, R., Maas, D. Design Methodology for Felxible Assembly Systems. SME Flexible Assembly Conference.
  • Hideg, L., Judd, R. Identification of Regions Within a Robotic Manipulator Work Envelope which Minimizes Tracking Error. 1987 American Controls Conference.
  • Judd, R., Pertturnen, C., Mousseau, C. Simultaneous Force, Torque, Position and Orientation Control of a Robotic Manipulator. 1987 American Controls Conference.
  • Sauter, J., White, J., Judd, R. The Role of Standards in the Development of Workstations Controllers. 6th Annual Control Engineering Conference.
  • Judd, R., Knasinski, A. A Technique to Calibrate Industrial Robots with Experimental Verification. IEEE International Conference on Robotics and Automation.
  • Judd, R., Van Til, R., Stuckman, P. Discrete Time Quantized Data Controllers with Application to Disturbance Rejection . Pittsburgh, PA: 18th Pittsburgh Conference on Modeling and Simulation.
  • Hickman, P., Judd, R. Robotic Deburring using an Actively Controlled End-Effector. SME Deburring and Surface Conditioning Conference.
  • Sangeorzan, B., Judd, R., Sangeorzan, B., Aronson, D. Coronal Oblique Osteotomy for Correction of Blount's Disease. 54th Annual Meeting of the American Academy of Orthopaedic Surgeons.
  • Sangeorzan, B., Judd, R., Sangeorzan, B., Aronson, D. Oblique Coronal Osteoromy for Multiple Plane Deformity of the Tibia. 33rd Annual Meeting of the Orthopaedic Research Society.
  • Judd, R., Van Til, R. A Performance Measure for Computing the Reverse Solution for Robots with Redundant Degrees of Freedom. 24th Conference on Decision and Control.
  • Parunak, H., White, J., Lozo, P., Judd, R., Irish, B., Kindrick, J. An Architecture for Heuristic Factory Control. 1986 Automatic Controls Conference.
  • Judd, R., Mousseau, C. Compliant Control of Robot Manipulators Incorporating Force Sensor and Constraint Models. 1986 Automatic Controls Conference.
  • White, J., Judd, R. A Controller for Automated Manufacturing Workstations. Rochester, MI: 4th Conference on Intelligent Systems and Machines.
  • Parunak, H., Lozo, P., Judd, R., Irish, B. A Distributed Heuristic Strategy for Material Transporation. Rochester, MI: 4th Conference on Intelligent Systems and Machines.
  • Judd, R., Falkenburg, D. Dynamics of Nonrigid Articulatd Robot Linkages. IEEE Transaction on Automatic Control.
  • Judd, R., Ricketts, M., Turski, M. Discrete Time Quantized Data Controllers. 1985 American Control Conference.
  • Van Til, R., Judd, R. The Kinematics of Robots with Redundant Degrees of Freedom. Pittsburgh, PA: 16th Pittsburgh Conference on Modeling and Simulation.
  • Judd, R., Ricketts, M., Turski, M. Discrete Time Quantized Data Systems. 6th Meeting of the Coordinating Group of Modern Control Theory.
  • Judd, R., Falkenburg, D. Optimal Control of Non-Rigid Robot Mechanism. Pittsburgh, PA: 15th Pittsburgh Conference on Modeling and Simulation.
  • Judd, R., Falkenburg, D. Dynamics and Control of Robots wtih Non-Rigid Members. 1983 American Control Conference.
  • Judd, R., Falkenburg, D. Dynamics of a Planar Two Link Non-Rigid Robot Mechanism. Pittsburgh, PA: 14th Pittsburgh Conference on Modeling and Simulation.
  • Judd, R., Falkenburg, D. Control Strategy for Flexible Robot Mechanisms. 15th Southeastern Symposium on System Theory.
  • Falkenburg, D., Judd, R. State Estimation in Quantized Systems with Inaccessible States. 1982 Automatic Controls Conference.
  • Falkenburg, D., Judd, R. Optimal Control of Discrete Time Quantized Systems with Inaccessible States. 12th Pittsburgh Conference on Modeling and Simulation.
  • Falkenburg, D., Judd, R. A New Approach to Digital Optimal Control of Linear Systems. 1980 IEEE Midwest Symposium on Circuits and Systems.

Instructor's Manual (1)

  • Judd, R. PLC Interface to Quest. Deneb User Group.

Book, Chapter in Non-Scholarly Book (1)

  • Judd, R., Parks, C., Koonce, D. Manufacturing systems Modeling with Integrated Design Models. Concurrent Design of Product, Manufacturing Processes and Systems.

Patents

  • Judd, R., Greenblatt, J., Waldon, S. Data Exchange by Processing Data by Subdivision.
  • Judd, R., White, J., Hickman, P., Brown, M., Sauter, J. Method and Apparatus for Simulating a Factory System. 5,247,650.