Resolver excitation and resolver-to-digital conversion system based on linear angle calculation

The Application of CPLD in Radar Servo Encoder Circuit;

Phase correction of quartering deviation of photoelectric rotary encoder;

The scheme of measuring the swaying of rocket and artillery systems was proposed by means of a laser beam simulating the axis of the barrel and a photoelectric rotary encoder measuring the swaying,and the principle of the scheme was illustrated.

The motion control system included three serial closed loops, in which two analog inner loops were a current feedback loop and a velocity feedback loop; the digital outer loop (position error feedback loop) was implemented by using three high accuracy 14-bits absolute rotary encoders as the angle displacement sensor.

The reason of the error in axle-angle position coder for precision tracking and instrumentation radar is analyzed in this paper, and the concrete measures of controlling the error are also proposed.

This paper introduces the design plan of a coupling for high precision axle-angle position coder, the rigidity is small except torsional.

The AD7864 chip is a complete analog signal processor for the interpolation in the photoelectrical rotary encoder and it only need 1.

Constitution and operating principle of a system for detecting dynamic error code of photoelectrical rotary encoder is presented.