| 摘要 |
PURPOSE:To obtain the steering performance having high accuracy by bringing each detecting output of a pair of right and left detectors, to square-law rectification, respectively, and thereafter, executing its inverse number calculation, and operating a controlled variable, based on a difference of two obtained arithmetic values and a code. CONSTITUTION:A controller 30 is provided with amplifiers 32a, 32b for amplifying each detecting output of detectors 20a, 20b up to a level being capable of square-law rectification, and also, performing a function for correcting a difference of output levels due to a variance of characteristics of the detectors 20a, 20b, square-law rectifying circuits 34a, 34b for bringing its output to square-law rectification, smoothing it and converting it to a DC voltage, inverse number calculating circuits 36a, 36b for bringing this DC voltage to an inverse number conversion, a differential amplifying circuit 37 to which each output of the inverse number calculating circuits 36a, 36b is inputted, and which amplifies its difference voltage, a code detecting circuit 38 for detecting a code of an output voltage of the differential amplifying circuit 37, and an inversion amplifying circuit 39 for inverting one output of the code detecting circuit 38. In this state, the misalignment quantity and the controlled variable are operated and the direction of a shift is determined.
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