In order to avoid the decoding and reading mistake,a mistake control technology based on Hamming code was proposed for magnetic markers coding,its principle,structure and information expression method were introduced in detail,and the test in Proving Ground for Highway and Traffic of MOC and application in Tacheng o.

Three-channel Gaussmeter were used for detecting the flux density of different type of magnetic markers,including X,Y,and Z Axis with Vector Magnitude,to gain the data of the magnet field,and X,Y,Z direction distribution chart of magnetic field by utilized.

In Automated Highway System based on magnetic marker guidance, the navigation facilities refer to magnetic markers in the central road with same interval.

In order to meet the requirements of multiple position signal modes needed in the motor servo control,a multi-mode magnetic encoder with the composite magnetic circuit has been newly designed and manufactured.

The application of magnetic encoder in phase commutation control of brushless DC motor was introduced.

Based on the uniform magnetization model of the surface magnetic field distribution on multi pole drum for magnetic encoder, the surface magnetic field distribution on multi pole drum for magnetic encoder was studied with numerical analysis method, and the general expression of surface magnetic field distribution on multi pole drum was found.

Preparation of Magnetic Drum Material of Magnetic Rotary Encoder;

The φ41mm drum for magnetic rotary encoder was prepared by using Co-γ-Fe2O3 magnetic powders as raw material.

Improvement of PLC reliability by using adaptive code-distance channel coding;

Application of channel coding in satellite communication;

Analysis on DATA service channel coding in TETRA;