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| Title: | Hierarchical optimal force–position–contour control of machining processes |
| Author (s): | Tang, Yan Landers, Robert G. Balakrishnan, S. N. |
| Department/Lab Affiliations: | Civil, Architectural & Environmental Engineering Mechanical & Aerospace Engineering |
| Keywords: | contour control hierarchical control machining force control motion control |
| Issue Date: | 2006 |
| Publisher: | Elsevier Masson |
| Citation: | Tang, Y.; R.G. Landers; S.N. Balakrishnan “Hierarchical Optimal Force–Position–Contour Control of Machining Processes”, Control Engineering Practice, Vol. 14, 2006, pp. 909–922. |
| Abstract: | There has been a tremendous amount of research in machine tool servomechanism control, contour control, and machining force control; however, to date these technologies have not been tightly integrated. This paper develops a hierarchical optimal control methodology for the simultaneous regulation of servomechanism positions, contour error, and machining forces. The contour error and machining force process reside in the top level of the hierarchy where the goals are to (1) drive the contour error to zero to maximize quality and (2) maintain a constant cutting force to maximize productivity. These goals are systematically propagated to the bottom level, via aggregation relationships between the top and bottom-level states, and combined with the bottom-level goals of tracking reference servomechanism positions. A single controller is designed at the bottom level, where the physical control signals reside, that simultaneously meets both the top and bottom-level goals. The hierarchical optimal control methodology is extended to account for variations in force process model parameters and process parameters. Simulations are conducted for four machining operations that validate the developed methodology. The results illustrate the controller can simultaneously achieve both the top and bottom-level goals. |
| Type: | Article - Journal text |
| In Title: | Control Engineering Practice |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. Pre-print: author can archive; Post-print: author can archive; FULL COPYRIGHT INFORMATION: |
| Link to this page: |
| title | Hierarchical optimal force–position–contour control of machining processes |
| contributor.author | Tang, Yan |
| contributor.author | Landers, Robert G. |
| contributor.author | Balakrishnan, S. N. |
| contributor.deptlab | Civil, Architectural & Environmental Engineering |
| contributor.deptlab | Mechanical & Aerospace Engineering |
| contributor.sponsor | National Science Foundation |
| subject | contour control |
| subject | hierarchical control |
| subject | machining force control |
| subject | motion control |
| date.issued | 2006 |
| publisher | Elsevier Masson |
| identifier.citation | Tang, Y.; R.G. Landers; S.N. Balakrishnan “Hierarchical Optimal Force–Position–Contour Control of Machining Processes”, Control Engineering Practice, Vol. 14, 2006, pp. 909–922. |
| identifier.pub | http://dx.doi.org/10.1016/j.conengprac.2005.05.005 |
| description.abstract | There has been a tremendous amount of research in machine tool servomechanism control, contour control, and machining force control; however, to date these technologies have not been tightly integrated. This paper develops a hierarchical optimal control methodology for the simultaneous regulation of servomechanism positions, contour error, and machining forces. The contour error and machining force process reside in the top level of the hierarchy where the goals are to (1) drive the contour error to zero to maximize quality and (2) maintain a constant cutting force to maximize productivity. These goals are systematically propagated to the bottom level, via aggregation relationships between the top and bottom-level states, and combined with the bottom-level goals of tracking reference servomechanism positions. A single controller is designed at the bottom level, where the physical control signals reside, that simultaneously meets both the top and bottom-level goals. The hierarchical optimal control methodology is extended to account for variations in force process model parameters and process parameters. Simulations are conducted for four machining operations that validate the developed methodology. The results illustrate the controller can simultaneously achieve both the top and bottom-level goals. |
| type | Article - Journal |
| type.DCMIType | text |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| rights | Pre-print: author can archive; Post-print: author can archive; |
| rights.URI | |
| relation.isPartOf | Control Engineering Practice |
| date.available | 2008-09-16T16:53:13Z |
| identifier.persist.URI |