Rotational Motion Measurement Using Coherent Time Value Selection
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Solution Overview
Problem
Existing systems for determining rotational mechanical properties of rotating machinery, such as rotational velocity, acceleration, and jerk, lack accuracy and reliability, which can lead to overspeed conditions and safety hazards.
Innovation Solution
A system comprising a detector, memory, and logic component that processes time values from rotating target passage events to determine coherent sets of data, allowing for the calculation of rotational velocity, acceleration, and jerk, and uses redundant processing domains for voting and control command generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing systems are used to determine rotational mechanical properties, then the system complexity is low, but the measurement precision and reliability are insufficient
Solution Approach 1:
The system is divided into multiple processing domains (first processing domain for selecting coherent time values, second processing domain for calculating motion parameters). This segmentation allows each domain to specialize in specific tasks, improving measurement precision while managing complexity through modular architecture
Solution Approach 2:
The patent introduces a new dimension of processing by creating multiple processing domains that operate in parallel. The first processing domain handles time value selection and coherence verification, while the second processing domain handles motion parameter calculation, adding a dimensional layer to the measurement system that enhances accuracy
2Reliability
If existing systems are used to determine rotational mechanical properties, then the device complexity is low, but the reliability is insufficient to prevent overspeed conditions
Solution Approach 1:
The system performs preliminary actions by selecting coherent time values in the first processing domain before calculating motion parameters in the second processing domain. This preliminary filtering and verification of time values ensures data coherence and reliability before further processing, preventing erroneous measurements that could lead to overspeed conditions
Solution Approach 2:
The system implements feedback mechanisms where the first processing domain provides verified coherent time values to the second processing domain, which then calculates reliable motion parameters. This feedback loop ensures that only validated data proceeds through the system, enhancing reliability for safety-critical applications
3Measurement precision
If multiple processing domains are introduced to improve measurement accuracy, then the measurement precision improves, but the device complexity increases
Solution Approach 1:
The processing architecture is segmented into distinct domains with clear functional boundaries. The first processing domain is responsible for time value selection and coherence verification, while the second processing domain handles motion parameter calculation. This segmentation improves measurement precision for higher-order derivatives like rotational acceleration by ensuring each domain performs its specialized function optimally
Solution Approach 2:
The first processing domain acts as an intermediary between the detector and the second processing domain. It filters and verifies time values for coherence before passing them to the motion parameter calculation domain, serving as a mediator that ensures data quality and reduces complexity by handling verification tasks separately
Data Source
AI summary
A method and system of determining motion parameters for a rotating machine. A detector is configured to receive a rotary motion input signal and a counter signal and to send a plurality of time values based on the input signal and the counter signal. A memory stores the plurality of time values in an ordered sequence and is coupled to the detector. A logic component selects time values stored in the memory by skipping a predefined number of time values in the ordered sequence, reads the selected time values to determine a coherent set of data values, and sends the coherent set of data values.