Resonance Suppression Control Selection for Dynamometer Testing
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Solution Overview
Problem
In testing systems like engine and drive train bench systems, exchanging specimens requires redesigning the resonance suppression controller, leading to prolonged startup times due to the need for specialized resonance suppression controllers tailored to each specimen's characteristics.
Innovation Solution
A control device with multiple resonance suppression controllers having different input-output characteristics, a specimen characteristic acquisition unit, and a resonance suppression controller selection mechanism that automatically selects the appropriate controller based on the specimen's moment of inertia, allowing for quick adaptation to new specimens without manual redesign.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a resonance suppression controller is redesigned for each new specimen, then resonance suppression effect is improved, but time consumption increases
Solution Approach 1:
Multiple resonance suppression controllers are designed in advance for different specimen types, with each controller pre-configured for specific specimen characteristics. When a specimen is installed, the corresponding pre-designed controller is selected and activated, eliminating the need for real-time redesign while maintaining effective resonance suppression.
Solution Approach 2:
The system changes the parameter of controller selection based on specimen characteristics rather than redesigning controller parameters each time. By maintaining multiple controllers with different parameter sets and selecting the appropriate one based on specimen type, the system achieves both rapid setup and effective resonance suppression.
2Adaptability or versatility
If multiple resonance suppression controllers are prepared, then adaptation to new specimens is improved, but device complexity increases
Solution Approach 1:
The resonance suppression control function is segmented into multiple independent controllers, each optimized for specific specimen characteristics. This segmentation allows the system to handle different specimen types effectively while maintaining manageable complexity through modular design and automated selection.
Solution Approach 2:
The system automatically selects the appropriate resonance suppression controller based on specimen characteristics without requiring manual intervention. This self-service mechanism reduces the operational complexity of managing multiple controllers, as the selection process is automated and does not burden the operator.
Data Source
AI summary
This overall control device for a testing system comprises: a plurality of resonance suppression controllers that each generate a torque current command signal for suppressing mechanical resonance between a specimen and a dynamometer upon receiving a base torque current command signal and axial torque detection signal and have different input/output characteristics; a specimen characteristic acquisition unit for acquiring the value of the moment of inertia of the specimen connected to the dynamometer; and a resonance-suppression-controller selection unit for selecting one of the plurality of resonance suppression controllers on the basis of the value of the moment of inertia acquired by the specimen characteristic acquisition unit and mounting the selected resonance suppression controller in a dynamometer control module.