Dynamoelectric Machine Ripple Compensation via External Correction Data
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Solution Overview
Problem
Electric motors often experience rotational speed and torque ripples due to cogging torques and manufacturing tolerances, leading to quality losses in applications like machine tools.
Innovation Solution
A method that involves a client requesting and receiving correction data from a server, which is used to optimize the operation of a dynamoelectric machine by compensating for rotational speed and torque ripples, and manufacturing tolerances, without the need for additional storage in the encoder electronics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If correction data is stored in encoder electronics to compensate for rotational speed and torque ripples, then manufacturing precision is improved, but device complexity and cost increase due to expensive storage requirements
Solution Approach 1:
The patent introduces an intermediary storage system (external database or cloud storage) to hold correction data, separating the storage function from the encoder electronics. The encoder only needs to access this external storage during operation, eliminating the need for expensive onboard storage while maintaining the ability to compensate for manufacturing tolerances and operational ripples.
2Manufacturing precision
If correction data is stored in encoder electronics to compensate for rotational speed and torque ripples, then manufacturing precision is improved, but cost increases due to expensive storage
Solution Approach 1:
The patent uses a copying approach where correction data is stored externally and accessed by the encoder system as needed. Instead of duplicating expensive storage capacity within the encoder, the system copies the necessary correction data from an external, more cost-effective storage medium during operation, significantly reducing overall system cost while maintaining precision.
3Device complexity
If standard encoders are used without expanded storage space, then device complexity is reduced, but manufacturing precision deteriorates due to inability to store correction data
Solution Approach 1:
The patent moves the storage dimension from the traditional onboard encoder storage to an external dimension (cloud storage, external database, or separate storage device). This dimensional shift allows standard encoders to be used without modification while still providing access to correction data through network or external interfaces, maintaining simplicity while achieving precision.
Data Source
AI summary
In a method for optimizing an operation of a dynamoelectric machine correction data for the dynamoelectric machine is requested by a client from a server. An identification number is transmitted by the client to the server, in particular via the Internet, and the correction data is transmitted by the server to the client. The dynamoelectric machine is operated based on the obtained correction data.