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State space modeling of dimensional variation propagation in multistage machining process using differential motion vector (2003)
| Content Provider | CiteSeerX |
|---|---|
| Author | Shi, Jianjun Huang, Qiang Zhou, Shiyu |
| Abstract | Abstract—In this paper, a state space model is developed to de-scribe the dimensional variation propagation of multistage ma-chining processes. A complicated machining system usually con-tains multiple stages. When the workpiece passes through mul-tiple stages, machining errors at each stage will be accumulated and transformed onto the workpiece. Differential motion vector, a concept from the robotics field, is used in this model as the state vector to represent the geometric deviation of the workpiece. The deviation accumulation and transformation are quantitatively de-scribed by the state transition in the state space model. A system-atic procedure that builds the model is presented and an experi-mental validation is also conducted. The validation result is satis-factory. This model has great potential to be applied to fault di-agnosis and process design evaluation for complicated machining processes. Index Terms—Differential motion vector, multistage machining process, state space model, variation propagation. NOMENCLATURE FCS, FCS Nominal and actual fixture coordinate system. HTM Homogeneous transformation matrix., Actual and nominal HTM between RCS and LCS. Deviation HTM defined by and., by identity matrix and by zero matrix, respectively. LCS th local coordinate system., Total number of key features and ma-chining stages, respectively. RCS Reference coordinate system., Actual and nominal rotational matrix be-tween RCS and LCS., Transformation matrices for datum-in-duced error. Transformation matrix for fixture error. |
| File Format | |
| Journal | IEEE Transactions on Robotics and Automation |
| Publisher Date | 2003-01-01 |
| Access Restriction | Open |
| Subject Keyword | Multistage Machining Process Identity Matrix Fcs Nominal Machining System Robotics Field Variation Propagation Zero Matrix Deviation Htm Datum-in-duced Error Fixture Error State Space Modeling State Transition State Vector Multiple Stage Machining Process Nomenclature Fcs Validation Result Index Term Differential Motion Vector Process Design Evaluation Lcs Th Local Coordinate System System-atic Procedure Key Feature Multistage Ma-chining Process Nominal Htm Experi-mental Validation Dimensional Variation Propagation Nominal Rotational Matrix Be-tween Rcs Deviation Accumulation Mul-tiple Stage Transformation Matrix Rcs Reference Coordinate System Htm Homogeneous Transformation Matrix Ma-chining Stage Geometric Deviation Actual Fixture Coordinate System Differential Motion Vector State Space Model |
| Content Type | Text |
