A. Azenha

On the describing function method and the prediction of limit cycles in nonlinear dynamical systems

J. Machado, A. Azenha, 1998 .

Automatic PID Controller Tuning for Robots with Nonlinear Friction at the Joints

A. Azenha, 2002 .

Fractional-order hybrid control of robot manipulators

José António Tenreiro Machado, Abílio Azenha, J. Machado, 1998, SMC'98 Conference Proceedings. 1998 IEEE International Conference on Systems, Man, and Cybernetics (Cat. No.98CH36218).

Variable Structure Control of Systems with Nonlinear Friction and Dynamic Backlash

J. A. Tenreiro Machado, Abílio Azenha, J. Machado, 1996 .

Variable structure control of robots with nonlinear friction and backlash at the joints

José António Tenreiro Machado, Abílio Azenha, J. Machado, 1996, Proceedings of IEEE International Conference on Robotics and Automation.

Position/force fractional control of mechanical manipulators

J.A. Tenreiro Machado, A. Azenha, J. T. Tenreiro Machado, 1998, AMC'98 - Coimbra. 1998 5th International Workshop on Advanced Motion Control. Proceedings (Cat. No.98TH8354).

Control of robots with nonlinear phenomena in the joints

Abílio Azenha, J.A.T. Machado, J. Machado, 1996, Proceedings of 8th Mediterranean Electrotechnical Conference on Industrial Applications in Power Systems, Computer Science and Telecommunications (MELECON 96).