Advancements in the programmable motion control of pneumatic drives for robots and other flexible machines

The overall objective of this research is to advance the programmable motion control of pneumatic drives. Enhanced performance characteristics and improved parameter tuning facilities have been evolved for a new generation of pneumatic servos. The evolution has been achieved with specific reference to the application of pneumatics in the motion control of modular robots and other modular machines. The research has been largely experimentally-based with complementary new modelling studies providing a basis for suggesting and explaining the control strategies evolved. Novel realtime control algorithms have been implemented and their associated performance characteristics statistically analysed. The algorithms have provided technological advance with respect to (i) minimising drift and hysteresis in the drive system through compensating and automating the system null conditions; (ii) optimising the positioning time through use of learning procedure; (iii) achieving velocity control through "null velocity" compensation and learning.

[1]  R H Weston,et al.  Front End Control Schemes for Pneumatic Servo-Driven Modules , 1985 .

[2]  Donaldson McCloy,et al.  Control of fluid power : analysis and design , 1980 .

[3]  Robert Harrison,et al.  Industrial Application of Pneumatic Servo-Controlled Modular Robots , 1986 .

[4]  W. Backé.  The application of servo-pneumatic drives for flexible mechanical handling techniques , 1986, Robotics.

[5]  G.C.N. Yeung,et al.  Principles of programming languages: Design, evaluation, and implementation , 1985, Proceedings of the IEEE.

[6]  T. Eun,et al.  Stability and Positioning Accuracy of a Pneumatic On-Off Servomechanism , 1982, 1982 American Control Conference.

[7]  David J. Williams.  Manufacturing systems :: an introduction to the technologies , 1988 .

[8]  Richard H. Weston,et al.  Industrial computer networks and the role of MAP, Part 2 , 1987, Microprocess. Microsystems.

[9]  Z. Taha.  Dynamics and control of robots , 1987 .

[10]  D. R. Vaughan.  Hot-Gas Actuators: Some Limits on the Response Speed , 1965 .

[11]  Richard H. Weston,et al.  A study of application areas for modular robots , 1987, Robotica.

[12]  G. Rogers,et al.  A knowledge based approach to robot axis control , 1987, Proceedings. 1987 IEEE International Conference on Robotics and Automation.

[13]  Masayuki Hattori,et al.  On the Effect of Dither on Nonlinear Characteristics of a Position Control System , 1980 .

[14]  Robert Harrison,et al.  Control strategies for pneumatic servo drives , 1986 .

[15]  K. Shimada.  THE ESTIMATING METHOD ON THE DYNAMIC BEHAVIOR OF PNEUMATIC CYLINDER FOR ADJUSTING THE ACTIVE CONDITION TO BE AT OPTIMUM , 1980 .

[16]  Robert Harrison,et al.  Universal machine control system primitives for modular distributed manipulator systems , 1989 .

[17]  C. R. Burrows,et al.  Further Study of a Low-Pressure on-off Pneumatic Servomechanism , 1969 .

[18]  A. H. Lightstone,et al.  The axiomatic method : an introduction to mathematical logic , 1966 .

[19]  Ray Shaw.  RESCU - on-line real-time artificial intelligence , 1987 .

[20]  C. R. Webb,et al.  Simulation of an On-Off Pneumatic Servomechanism , 1967 .

[21]  C. R. Burrows,et al.  Effect of Position on the Stability of Pneumatic Servomechanisms , 1969 .

[22]  Karl Johan Åström.  A robust sampled regulator for stable systems with monotone step responses , 1980, Autom..

[23]  Richard H. Weston,et al.  Computer Controlled Pneumatic Servo Drives , 1984 .

[24]  Robert Harrison,et al.  Supervisory Control of Single Axis Controllers for Modular Robotic Systems Using a Serial Interface , 1986 .

[25]  T. H. Lambert,et al.  Modelling a Loaded Two-Way Pneumatic Actuator , 1976 .

[26]  Etsuo Marui,et al.  Some Considerations on Characteristics of Pneumatic Servomechanism , 1971 .

[27]  Kenji Araki.  Compensation of a Force-Feedback Pneumatic Servovalve , 1971 .

[28]  K. Foster,et al.  The Response of a High-Pressure Pneumatic Servomechanism to Step and Sinewave Inputs , 1969 .

[29]  A. Chitty.  Low pressure pneumatic servomechanisms , 1973 .

[30]  Richard H. Weston,et al.  Compensation in pneumatically actuated servomechanisms , 1985 .

[31]  C. R. Burrows,et al.  Fluid Power Servomechanisms , 1976 .

[32]  T. M. Crawford,et al.  A machine learning approach to expert systems for fault diagnosis in communications equipment , 1987 .