Design and analysis of angular detector for stepping motor

To control the reactor core of SMART should require the sensor to control the control rod continuously. Because the rotary stepping motor controls the position of control rod in SMART, the position of control rod can be measured continuously if an angle position of rotary stepping motor is detected. The rotary stepping motor for SMART CEDM is to work at harsh conditions of high temperature, pressure and radiation. But it is difficult to select an adequate sensor from commercially available products. This paper describes the design of angular position detector to detect the rotor of the stepping motor which controls the position of control rod. The existing techniques on various angular position detectors have been analyzed, and this paper studies the principles of our angular position detector, and performs the optimal design