Differential position feedback for compensating the tracking error in a motion control system

Chen Juan; Dong ErBao; Chen Tao

doi:10.1117/12.754599

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8 October 2007 Differential position feedback for compensating the tracking error in a motion control system

Chen Juan, Dong ErBao, Chen Tao

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Proceedings Volume 6719, Optomechatronic Systems Control III; 67190A (2007) https://doi.org/10.1117/12.754599
Event: International Symposium on Optomechatronic Technologies, 2007, Lausanne, Switzerland

Abstract

When a motion control system tracks a fast moving target, the over-tune is the main part of the dynamic tracking error. The speed delay compensation may be used to decrease the error but the stability is sacrificed. We put forward the Differential Position Feedback control, and discuss its effects and control mechanism through simulation. With transfer function identification, we find that the Differential Position Feedback(DPF) control is based on internal model principle. The simulation results show that DPF can improve the tracking ability for the fast moving target but lower the tracking precision at low frequency region. If it is combined with the dynamic integral control, better tracking precision can be obtained.

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Chen Juan, Dong ErBao, and Chen Tao "Differential position feedback for compensating the tracking error in a motion control system", Proc. SPIE 6719, Optomechatronic Systems Control III, 67190A (8 October 2007); https://doi.org/10.1117/12.754599

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