Rotor Speed Measurement Using Adaptive Pulse Timing
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Solution Overview
Problem
Existing methods for determining rotor speed are inaccurate, leading to imprecise control of devices connected to the rotor.
Innovation Solution
A system and method that utilize a sensor to acquire pulses associated with rotor movement, determine an ideal time period and pulse count based on previous and target time periods, and calculate rotor speed using these parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional speed measurement methods are used, then the measurement process is simple, but the speed determination accuracy is poor
Solution Approach 1:
The system performs preliminary actions by determining an ideal time period based on pulse counts from a previous time period before calculating the current speed. This preliminary determination of the ideal time period (using either a fixed ratio method or dynamic adjustment method) prepares the calculation framework in advance, ensuring accurate speed determination while managing computational complexity through structured pre-processing
Solution Approach 2:
The system implements feedback by using the actual pulse count from the current time period to compare against the ideal pulse count, thereby determining the actual speed. The system also uses previous speed measurements and pulse counts to adjust and refine the ideal time period for subsequent calculations, creating a closed-loop feedback mechanism that continuously improves measurement accuracy
2Adaptability or versatility
If fixed time period measurement is used, then the measurement method is simple, but it cannot adapt to varying rotor speeds
Solution Approach 1:
The system applies dynamics by making the time period determination adaptive rather than fixed. The ideal time period is dynamically adjusted based on the actual pulse count from the previous time period, allowing the measurement system to automatically adapt to varying rotor speeds. This dynamic adjustment ensures that the measurement remains accurate across different operating conditions
Solution Approach 2:
The system changes the parameter of time period duration based on measured pulse counts. By calculating the ideal time period as a function of previous pulse counts (using a fixed ratio or dynamic adjustment), the system modifies the measurement parameters to match actual operating conditions, thereby maintaining measurement precision across varying speeds
Data Source
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AI summary
A system and a method for rotor speed determination. The system may includes: acquiring, based on a sensor (120), a plurality of pulses associated with movement of a rotor (110) within a plurality of time periods, the rotor (110) being operably connected with the sensor (120); determining, based on a specific pulse associated with the movement of the rotor (110) within a previous time period and an actual pulse count associated with the movement of the rotor (110) within a target time period, an ideal time period for determining a speed of the rotor (110) in the target time period, the specific pulse associated with the movement of the rotor (110) within the previous time period comprising a last pulse within the previous time period or a first pulse within the previous time period; determining, based on the ideal time period or an actual pulse count within the target time period, an ideal pulse count within the ideal time period; and determining the speed of the rotor (110) in the target time period based on the ideal time period and the ideal pulse count.