Dynamic Engine Testing Method for Reduced Duration
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Solution Overview
Problem
Current engine testing methods require lengthy sequences of operating levels to ensure data quality, leading to prolonged test durations and increased costs, while also limiting the number of operating setpoints that can be tested.
Innovation Solution
A method that finalizes each operating level based on a criterion associated with physical parameters and a confidence level, allowing for early termination if the criterion is met and the confidence level reaches a predetermined threshold, while avoiding temporary fluctuations, and prioritizes operating levels to optimize the testing sequence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sequence of operating stages with predetermined duration is used to ensure data quality, then measurement precision is improved, but loss of time increases
Solution Approach 1:
The patent applies dynamics by making the operating stage duration variable rather than fixed. The test system continuously monitors physical parameters and dynamically adjusts the duration of each operating stage based on when stability criteria are met. This allows the test to adapt to actual system behavior, ending stages early when stability is achieved and extending them when needed, thereby reducing overall test duration while maintaining data quality.
Solution Approach 2:
The patent implements feedback by continuously monitoring physical parameters during operating stages and using this information to determine when to transition between stages. The stability criterion evaluation creates a feedback loop where measured parameters inform the decision to end the current stage and begin the next, replacing predetermined timing with condition-based transitions that optimize both precision and time efficiency.
2Reliability
If the duration of operating stages is extended to ensure data reliability, then reliability is improved, but productivity decreases
Solution Approach 1:
The system dynamically determines the duration of each operating stage based on real-time monitoring of physical parameters against stability criteria. This eliminates the need for uniformly long predetermined durations, allowing the test to progress through multiple operating setpoints more quickly while maintaining reliability by ensuring each stage runs long enough to capture stable data.
Solution Approach 2:
The patent changes the parameter of stage duration from a fixed predetermined value to a variable determined by stability criteria. This parameter change allows the system to optimize the balance between reliability and productivity, extending stages only as long as necessary to meet stability requirements and reducing overall test time to enable testing of more operating setpoints.
3Adaptability or versatility
If more operating setpoints are tested to characterize the entire operating range, then adaptability is improved, but loss of time increases
Solution Approach 1:
The patent ensures continuous useful action by eliminating unnecessary waiting time between operating stages. By using stability-based transition criteria rather than predetermined durations, the system continuously progresses through the operating range as soon as each setpoint's data requirements are met, maximizing the efficiency of test time while comprehensively characterizing the entire operating range.
Solution Approach 2:
The system changes the control parameter from fixed time intervals to stability-based transition conditions. This allows the test to adaptively progress through multiple operating setpoints, increasing the comprehensiveness of operating range characterization while reducing overall test duration by avoiding unnecessary delays at each stage.
Data Source
Figure 1
Figure 2~3B
AI summary
The invention relates to the field of testing methods, and specifically to a method for technical testing of a device, including at least one operational step corresponding to a stable value of at least one operational setting of the device and/or of a test bench for the device. Said operational step ends within a maximum duration threshold if a criterion associated with a set of physical parameters collected during the operational step is met and a level of confidence associated with said set of physical parameters reaches at least one predetermined threshold.