Abstract
The incremental angle encoder takes the current initial position as the zero point when switching-on, therefore, it's necessary to establish the mechanical origin of the system in some angle positioning systems, i.e., zero-finding. Addressing this issue, a novel zero-finding algorithm and its realization are proposed based on the incremental encoder with distance-coded marks. The experimental results show that the proposed algorithm is feasible, which can not only quickly establish the mechanical origin of the system without require a full circle rotation, but also greatly improve the accuracy, the robustness and the ability to anti-interference.
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