Rotor Position Signal Delay Compensation in Electric Machines

The patent applies preliminary action by calculating the angular offset based on signal delay characteristics before control operations are performed. The controller pre-determines the angular offset using measured rotor position angles at different rotational speeds, then applies this compensation to subsequent control decisions, thereby eliminating the harmful effect of signal delay before it affects control precision.

The patent implements feedback by continuously measuring rotor position angles at different rotational speeds and using these measurements to calculate and update the angular offset compensation values. The controller feeds back the calculated angular offset to correct the rotor position angle information, creating a closed-loop compensation mechanism that maintains measurement precision across varying speeds.

The patent applies self-service by having the system automatically calculate and compensate for its own signal delay characteristics without requiring external calibration equipment or complex intervention. The controller uses its own rotor position measurements at different speeds to determine the angular offset, and then autonomously applies the compensation, eliminating the need for separate calibration procedures or additional hardware.

The patent changes parameters by transforming the raw rotor position angle measurements into compensated angular values using calculated offset corrections. The system dynamically adjusts the effective rotor position angle parameter based on rotational speed and measured signal delay characteristics, thereby maintaining precision without requiring complex hardware modifications.

The patent applies preliminary action by calculating the angular offset during initial system operation or calibration phases, storing these compensation values for later use. During normal high-speed operation, the pre-calculated offset values are applied directly without requiring real-time recalculation, thereby maintaining control efficiency while minimizing ongoing calculation time requirements.

The patent implements periodic action by performing angular offset calculations at specific intervals or under defined conditions (e.g., at different rotational speeds during calibration), rather than continuously. This periodic calculation approach reduces computational burden during normal operation while maintaining accurate compensation, balancing precision requirements with calculation time constraints.