Coding of Magnetic Ruler in Cylinder

摘要

One of magnetic rod hydraulic cylinder displacement measurement system's major techniques is to carry on "the rod" according to certain coding rule scoring, the good code not only need be advantageous to the recognition time the error detection or the error correction, moreover must be advantageous to the long traveling schedule survey time the symbol expansion, the immediate influence to the hydraulic cylinder piston displacement's effective survey, this article has analyzed the magnetic rod code design fit and unfit quality weight target - - The average amount of information sources, the decoding error rate, error detection/error correction ability, has carried on the comparison based on the target to the existing magnetic rod code, had pointed out their good and bad points, provide the basis for the magnetic rod's efficient coding.