Electric Drive Controller Tuning With a Single Replacement Parameter
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Solution Overview
Problem
Setting values for multiple controller parameters in electric drive systems is complex and time-consuming, often requiring iterative manual adjustments that do not lead to optimal control quality due to extensive combinatorics and subjective assessments of instability.
Innovation Solution
A method that uses a single replacement parameter value, which is adjusted to recalculate all relevant parameter values automatically, with visual and automatic signals indicating stability limits to facilitate faster and more reproducible parameter setting, reducing the need for manual iterative adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple controller parameters are manually adjusted iteratively, then control quality can be improved, but the time required for parameter setting increases significantly
Solution Approach 1:
The patent extracts the complex multi-parameter adjustment problem into a single substitute parameter (beta). By representing multiple interdependent parameters (position controller P, speed controller P, I, and filter time) through one unified parameter, the system eliminates the need for iterative manual adjustments while maintaining optimal control quality across all parameters simultaneously.
Solution Approach 2:
The patent transforms the parameter setting approach by changing from direct adjustment of multiple individual parameters to adjustment of a single substitute parameter (beta). This parameter transformation allows all controller parameters to be optimized simultaneously through mathematical relationships, converting a time-consuming iterative process into a single-step configuration.
2Manufacturing precision
If multiple controller parameters are adjusted simultaneously, then optimal control quality can be achieved, but the complexity of parameter setting increases
Solution Approach 1:
The patent extracts the complexity of coordinating multiple parameters by introducing a single substitute parameter (beta) that encapsulates the relationships between position controller P, speed controller P, I, and filter time. This extraction simplifies the user interface and setting process while the underlying mathematical model handles the complex interdependencies.
Solution Approach 2:
The substitute parameter beta acts as an intermediary between the user and the multiple controller parameters. Instead of directly adjusting four or more interdependent parameters, the user adjusts beta, which then automatically determines the optimal values for all other parameters through predefined mathematical relationships, reducing complexity while maintaining optimality.
3Ease of operation
If traditional sequential parameter setting is used, then the process is manageable, but the control quality is suboptimal due to parameter dependencies
Solution Approach 1:
The patent inverts the traditional parameter setting approach by not starting with individual parameter adjustments and working toward optimal control. Instead, it starts with a single substitute parameter (beta) that directly determines all controller parameters simultaneously, achieving optimal control quality from the first setting action without requiring sequential adjustments.
Solution Approach 2:
The patent performs preliminary calculation of all parameter relationships before the user actually sets the parameters. The mathematical model pre-establishes the optimal relationships between beta and all controller parameters (position P, speed P, I, filter time), so that when the user adjusts beta, all parameters are already configured for optimal performance without requiring iterative refinement.
Data Source
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AI summary
The invention relates to a method for adjusting values of a plurality of parameters of at least one controller (2, 3, 4) of an electric drive system (1), comprising the following steps: providing an individual replacement parameter value that can be adjusted by a user; after adjusting the replacement parameter value, calculating the values of the plurality of parameters from the adjusted replacement parameter value.