Stepping Motor Advance Angle Control via Segmented Velocity Ranges

The patent segments the velocity control range into multiple predetermined ranges, each with its own advance angle correspondence information. Instead of storing all possible velocity-data pairs, the system divides the control space and stores only the correspondence information needed for each segment, significantly reducing overall data storage requirements while maintaining velocity control accuracy across the full range.

The patent implements dynamic switching between different predetermined ranges based on the current velocity. The control unit dynamically selects which advance angle correspondence information to use based on the current operating point, allowing accurate velocity control at any velocity without requiring all measurement data to be stored simultaneously. This dynamic adaptation resolves the contradiction between comprehensive velocity control and data storage burden.

The patent divides the velocity control capability into multiple predetermined ranges, each with segmented correspondence information. This segmentation allows the system to achieve versatile velocity control across the full range while only storing the essential correspondence data for each segment, dramatically reducing total memory usage compared to storing all possible measurement data.

The patent creates a universal control framework where a set of predetermined ranges and their corresponding advance angle information can handle velocity control at any velocity within the motor's operating range. This multi-functional approach allows the system to adapt to any velocity requirement without requiring dedicated data storage for each specific velocity point, achieving versatility with minimal memory overhead.

The patent implements dynamic range selection based on current velocity, allowing the system to quickly adapt to velocity changes by switching between predetermined ranges. This dynamic approach maintains high responsiveness because the control unit only needs to select from a limited set of pre-characterized ranges rather than processing comprehensive measurement data, reducing the data processing burden while preserving speed of response.

The patent performs preliminary characterization of the motor's advance angle behavior for each predetermined range in advance. By pre-calculating and storing the correspondence information for each range, the system eliminates the need for real-time comprehensive data processing during velocity changes. The control unit simply selects the appropriate pre-characterized range and applies the corresponding advance angle, maintaining responsiveness while minimizing data processing burden during operation.