Implementation of a lag-lead compensator for robots

A frequency response approach was used to design and realize a lag-lead compensator for a robot arm. An analytical comparison between a PD (proportional-derivative) or PID (proportional integral-derivative) controller and a lag-lead compensator shows that the latter reduces the tradeoffs between the static accuracy, system stability, and is insensitive to disturbances in the frequency domain. The implementation and test results verify the encouraging results in the time domain. The lag-lead compensator reduces the tracking errors considerably.<<ETX>>

[1]  Karl Johan Åström,et al.  Computer-Controlled Systems: Theory and Design , 1984 .

[2]  Katsuhiko Ogata,et al.  Modern Control Engineering , 1970 .

[3]  A. Isidori,et al.  Nonlinear feedback in robot arm control , 1984, The 23rd IEEE Conference on Decision and Control.

[4]  J. Y. S. Luh,et al.  Resolved-acceleration control of mechanical manipulators , 1980 .

[5]  Yilong Chen A formulation of automatic parameter tuning for robot arms , 1987, 26th IEEE Conference on Decision and Control.

[6]  Bernard Roth,et al.  The Near-Minimum-Time Control Of Open-Loop Articulated Kinematic Chains , 1971 .

[7]  B. R. Markiewicz,et al.  Analysis of the computed torque drive method and comparison with conventional position servo for a computer-controlled manipulator , 1973 .

[8]  Charles P. Neuman,et al.  Discrete dynamic robot models , 1985, IEEE Transactions on Systems, Man, and Cybernetics.

[9]  Daniel E. Whitney,et al.  Resolved Motion Rate Control of Manipulators and Human Prostheses , 1969 .

[10]  Steven Dubowsky,et al.  The application of model-referenced adaptive control to robotic manipulators , 1979 .

[11]  Hooshang Hemami,et al.  Nonlinear feedback in simple locomotion systems , 1976 .

[12]  Yilong Chen Nonlinear feedback and computer control of robot arms , 1984 .

[13]  E. Freund Fast Nonlinear Control with Arbitrary Pole-Placement for Industrial Robots and Manipulators , 1982 .

[14]  A. Koivo,et al.  Control of robotic manipulator with adaptive controller , 1981, 1981 20th IEEE Conference on Decision and Control including the Symposium on Adaptive Processes.

[15]  Rolf Isermann Digital Control Systems , 1981 .

[16]  Gene F. Franklin,et al.  Digital control of dynamic systems , 1980 .

[17]  Tzyh Jong Tarn,et al.  Robot arm dynamic control by computer , 1985, Proceedings. 1985 IEEE International Conference on Robotics and Automation.