Aimed at the problem of axial angle encoder have great influence on the result of change of traditional decoder circuit

a new method of decode and its hardware circuit implement is presented.A full digital scheme is used in this method of encoder to obtain the original information.The key parameters can be changed adaptively and environmental variation can be compensated.An intelligent filter is used for disposing coarse signal

to get best performance of filter and make the parameters of filter changed with encoder’s speed.Practice has shown that the workload of translating-circuit’s debugging and photoelectrical encoder’s installation is reduced greatly.The encoder is reliable in severe environment.