Stepping Motor Controller Using Dynamic Sensor Delay Segmentation

The patent divides the sensor arrangement into multiple segments with different delay times. Instead of using a single delay time for all sensors, the system segments the sensor group and assigns different delay time values to different segments based on their specific arrangement errors. This allows each sensor segment to be optimized independently, maintaining synchronization accuracy while simplifying the overall assembly process.

The patent makes the delay time dynamic rather than fixed. The delay time is adjusted based on the detected rotor position and the specific sensor arrangement errors. By dynamically compensating for errors rather than using a static delay time, the system maintains high reliability under varying load conditions while keeping the manufacturing process simple.

The patent implements a feedback mechanism where the actual rotor position is continuously detected by the magnetic sensors and fed back to the control system. The control system then uses this feedback information along with the predetermined delay times to calculate the optimal excitation timing. This feedback loop compensates for sensor position errors without requiring high manufacturing precision in sensor attachment.

The patent changes the parameter of delay time to compensate for sensor arrangement errors. Instead of requiring precise physical positioning of sensors, the system adjusts the temporal parameter (delay time) electronically. This parameter change approach allows tolerance in physical sensor placement while maintaining torque curve accuracy through software compensation.