Active control of time-delay in cutting vibration |
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Authors: | Pingxu Zheng Xinhua Long |
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Institution: | State Key Laboratory of Mechanical System and Vibration, Shanghai Jiaotong University, Shanghai 200240, China |
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Abstract: | The system dynamics of turning processes can be described by a delay differential equation. How to improve the stability and suppress the vibration of cutting is of an interesting topic. In this paper, a multiple time-delay controller is developed based on discrete optimal control method for the turning vibrations control. Numerical simulations are carried out to verify the efficiency of the controller. Results indicate the designed controller can suppress the cutting vibration efficiently and improve the stability of the cutting processes. The influence of designed time-delay and sampling time on the control performance is also discussed. |
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Keywords: | time-delay stability cutting vibration optimal control |
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