0
TECHNICAL PAPERS

Model-Based Machining Force Control

[+] Author and Article Information
Robert G. Landers, A. Galip Ulsoy

  Department of Mechanical Engineering and Applied Mechanics, The University of Michigan, Ann Arbor, MI 48109-2125

J. Dyn. Sys., Meas., Control 122(3), 521-527 (Oct 20, 1999) (7 pages) doi:10.1115/1.1286821 History: Received October 20, 1999
Copyright © 2000 by ASME
Your Session has timed out. Please sign back in to continue.

References

Koren,  Y., and Masory,  O., 1981, “Adaptive Control with Process Estimation,” CIRP Ann., 30, No.1, pp. 373–376.
Daneshmend,  L. K., and Pak,  H. A., 1986, “Model Reference Adaptive Control of Feed Force in Turning,” ASME J. Dyn. Syst., Meas., Control, 108, No. 3, pp. 215–222.
Ulsoy,  A. G., and Koren,  Y., 1989, “Applications of Adaptive Control to Machine Tool Process Control,” IEEE Control Syst. Mag., 9, No. 4, pp. 33–37.
Elbestawi,  M. A., Mohamed,  Y., and Liu,  L., 1990, “Application of Some Parameter Adaptive Control Algorithms in Machining,” ASME J. Dyn. Syst., Meas., Control, 112, No. 4, pp. 611–617.
Åström, K. J., and Wittenmark, B., 1995, Adaptive Control, 2nd ed., Addison-Wesley, New York.
Elbestawi,  M. A., and Sagherian,  R., 1987, “Parameter Adaptive Control in Peripheral Milling,” Int. J. Mach. Tools Manuf., 27, No. 3, pp. 399–414.
Harder, L., 1995, “Cutting Force Control in Turning-Solutions and Possibilities,” Ph.D. dissertation, Department of Materials Processing, Royal Institute of Technology, Stockholm.
Landers, R. G., and Ulsoy, A. G., 1996, “Machining Force Control Including Static, Nonlinear Effects,” Japan-USA Symposium on Flexible Automation, Boston MA, July 7–10, pp. 983–990.
Rober,  S. J., Shin,  Y. C., and Nwokah,  O. D. I., 1997, “A Digital Robust Controller for Cutting Force Control in the End Milling Process,” ASME J. Dyn. Syst., Meas., Control, 119, No. 2, pp. 146–152.
Tang,  Y. S., Hwang,  S. T., and Wang,  Y. S., 1994, “Neural Network Controller for Constant Turning Force,” Int. J. Mach. Tools Manuf., 34, No. 4, pp. 453–460.
Kim,  M. K., Cho,  M. W., and Kim,  K., 1994, “Applications of the Fuzzy Control Strategy to Adaptive Force Control of Non-Minimum Phase and Milling Operations,” Int. J. Mach. Tools Manuf., 34, No. 5, pp. 677–696.
Park,  J.-J., and Ulsoy,  A. G., 1992, “On-Line Tool Wear Estimation Using Force Measurement and a Nonlinear Observer,” ASME J. Dyn. Syst., Meas., Control, 114, No. 4, pp. 666–672.
Furness,  R. J., Tsao,  T.-C., Rankin,  J. S., Muth,  M. J., and Manes,  K., 1999, “Torque Control for a Form Tool Drilling Operation,” IEEE Trans. Control Syst. Technol., 7, No. 1, pp. 22–30.
Landers, R. G., 1997, “Supervisory Machining Control: A Design Approach Plus Force Control and Chatter Analysis Components,” Ph.D. dissertation, Department of Mechanical Engineering and Applied Mechanics, the University of Michigan, Ann Arbor, MI.

Figures

Grahic Jump Location
Block diagram of model-based machining force control system
Grahic Jump Location
Stability borderline for machining force control system for static force process. Analysis (line) from Eq. (12) and simulations (circles). Parameters: FR=0.2 kN,f(0)=0.2 mm,α=0.5,θ=0.8705,b0=−0.9048,fmin=10−10 mm, and fmax=1.0 mm.
Grahic Jump Location
Marginally stable force responses. In region α<α*<2α (top thick line with circles): FR=0.6 kN,f(0)=0.4 mm,α=0.5,θ=0.8705,b0=−0.9048,fmin =10−10 mm,fmax =1.0 mm,α*=0.5, and θ/θ*=21.02. Outside region α<α*<2α (bottom thin line with squares): FR=0.2 kN,f(0)=0.2 mm,α=0.5,θ=0.8705,b0=−0.9048,fmin=10−10 mm,fmax=1.0 mm,α*=0.3, and θ/θ*=22.73.
Grahic Jump Location
Stability borderline for machining force control system for static force process. Analysis (line) from Eq. (12) outside of Region I and from Eq. (19) inside Region I. Simulations (circles). Parameters are given in Fig. 2.
Grahic Jump Location
Stability borderline generated by linearization analysis (surface) and verified via simulations (spheres). Simulation parameters: FR=0.4 kN,f0=0.1 mm,α=0.7,θ=2.0,a=−0.8206,bl=−1.562, and b0=0.6413. The parameter A*=−0.6377.
Grahic Jump Location
Stability borderline (linearization analysis-line, simulations-circles) for α*=0.6 and simulation parameters given in Fig. 5. The parameter A*=−0.6377.
Grahic Jump Location
Schematic of experimental machining system and workpiece
Grahic Jump Location
Force (circles) and feed (thick line) responses to step change in commanded feed (thin line) for static system. Force sample period is 0.08 s and feed sample period is 0.01 s.
Grahic Jump Location
Force response (thick line) for static model-based force controller. Parameters: FR=0.285 kN (thin line), α*=0.63,θ*=1.0,f(0)=0.1 mm,fmin=10−4 mm,fmax=0.4 mm, and τc=0.4 s(b0=−8187).
Grahic Jump Location
Stability borderline of model-based machining force control system for a static force process. Analysis (thick line), simulations (circles), and experiments (squares) for τc=0.8 s(b0=−0.9048). Analysis (thin line), simulations (triangles), and experiments (diamonds) for τc=1.6 s(b0=−0.9512). Experimental parameters: FR=0.285 kN,f(0)=0.2 mm,α=0.63,θ=0.76,fmin=10−4 mm, and fmax=0.4 mm.
Grahic Jump Location
Force (circles) and feed (thick line) responses to step change in commanded feed (thin line) for first-order system. Force sample period is 0.08 s and feed sample period is 0.01 s.
Grahic Jump Location
Force response (thick line) for first-order model-based force controller. Parameters: FR=0.285 kN (thin line), a*=−0.85,α*=0.63,θ*=1.0,f0=0.4 mm,fmin=10−4 mm,fmax=0.6 mm, and ωc=π rad/s and ζc=0.7071 (b1=−1.6480 and b0=0.7009).
Grahic Jump Location
Stability borderline of model-based machining force control system for a first-order force process. Analysis (thick line), simulations (empty squares), and experiments (solid squares) for ωc=π rad/s. Analysis (medium line), simulations (empty circles), and experiments (solid circles) for ωc=2π rad/s. Analysis (thin line), simulations (empty triangles), and experiments (solid triangles) for ωc=4π rad/s. Experimental parameters: FR=0.285 kN,f0=0.2 mm,α=0.63,a=−0.85,θ=0.76,fmin=10−4 mm,fmax=0.6 mm, and ζc=0.7071.

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In