Title
Real-time implementation and evaluation of the computed-torque scheme
Abstract
Experimental results on the real-time performance of model-based control algorithms are presented. The computed-torque scheme which utilizes the complete dynamics model of the manipulator was compared to the independent joint control scheme, which assumes a decoupled and linear model of the manipulator dynamics. The two manipulator control schemes have been implemented on the Carnegie-Mellon University DD (direct-drive) Arm II with a sampling period of 2 ms. The authors discuss the design of controller gains for both the computed-torque and the independent joint control schemes and establish a framework for comparing their trajectory-tracking performances. It is shown that the computed-torque scheme outperforms the independent joint control scheme as long as there is not torque saturation in the actuators. Based on the experimental results, the authors conclusively establish the importance of compensating for the nonlinear Coriolis and centrifugal forces even at low speeds of operation
Year
DOI
Venue
1989
10.1109/70.88047
Robotics and Automation, IEEE Transactions  
Keywords
Field
DocType
computerised control,position control,robots,Carnegie-Mellon University direct drive Arm II,computed-torque scheme,computerised control,controller gains,dynamics model,independent joint control schemes,manipulator,model-based control,position control,real-time performance
Control theory,Torque,Nonlinear system,Linear model,Control theory,Simulation,Sampling (signal processing),Real-time operating system,Control engineering,Industrial robot,Mathematics,Actuator
Journal
Volume
Issue
ISSN
5
2
1042-296X
Citations 
PageRank 
References 
30
2.67
3
Authors
2
Name
Order
Citations
PageRank
Khosla, P.K.1931123.84
Takeo Kanade2250734203.02