Electronic Phase Correction for Rotary Drive Assembly
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing methods for manufacturing drive apparatuses with rotary electrical machines and rotation sensors are labor-intensive and costly due to manual phase adjustment and require special management operations for error correction, especially when manufacturing and assembly occur in different locations.
Innovation Solution
An information management system that stores position error information obtained during an inspection process using back electromotive force measurements, allowing for electronic adjustment of phase differences between the rotary electrical machine and the rotation sensor, eliminating the need for mechanical adjustments and special management operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If manual phase adjustment method is used, then phase difference can be corrected, but manufacturing time increases and labor cost increases
Solution Approach 1:
The patent replaces manual mechanical adjustment with automated electronic measurement and calculation. The inspection device automatically measures back electromotive force waveforms, calculates phase differences, and determines correction amounts, eliminating the need for manual mechanical rotation and visual waveform comparison.
Solution Approach 2:
The system performs self-correction by automatically calculating the required phase adjustment amount based on measured waveform data and storing this information in the control device. The drive apparatus self-adjusts by applying the stored correction amount to align the rotation sensor phase with the actual rotor position, without requiring external manual intervention.
2Adaptability or versatility
If adjustment mechanism is attached to drive apparatus, then phase adjustment capability is provided, but device complexity and cost increase
Solution Approach 1:
The patent eliminates mechanical adjustment mechanisms by replacing them with an electronic information processing system. The solution uses waveform measurement, digital calculation of phase differences, and electronic storage of correction data in memory, completely removing the need for mechanical rotation mechanisms, alignment tools, or physical adjustment components.
Solution Approach 2:
The patent introduces an intermediary information processing system consisting of the inspection device and control device. This intermediary calculates and stores phase correction amounts based on measured waveform data, acting as a mediator between the rotation sensor and the drive control system to achieve phase alignment without direct mechanical adjustment.
3Manufacturing precision
If error information is stored in control device, then phase correction is achieved, but special management operations are required when manufacturing and assembly occur in different locations
Solution Approach 1:
The patent performs preliminary measurement and calculation of phase correction amounts during the inspection process before assembly. The correction amounts are calculated and stored in advance in the control device memory, so that when the drive apparatus is later assembled or transported to different locations, the phase correction is already configured and no additional management operations are needed.
Solution Approach 2:
The system uses feedback from the measured back electromotive force waveforms to automatically determine and store the appropriate phase correction amounts. The inspection device measures the actual waveform characteristics, calculates the deviation from ideal phase alignment, and feeds this information back into the control device as stored correction data, creating a self-configuring system that adapts to each specific drive apparatus.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies and cost-reduces the phase adjustment process by enabling electronic correction of phase differences, reducing manufacturing time and eliminating the need for additional adjustment mechanisms, while allowing precise control of the rotary electrical machine.
Implementation Method 1
a back electromotive force is measured by mechanically driving the rotary electrical machine after the rotary electrical machine and the rotation sensor are assembled
Data Source
AI summary
An information management system includes a storage medium storing position error information of the rotation sensor obtained based on information of the back electromotive force and output information from the rotation sensor in an inspection process in which a back electromotive force is measured by mechanically driving the rotary electrical machine after the rotary electrical machine and the rotation sensor are assembled, wherein the storage medium is provided in a state capable of being read via communication when a control device controlling the rotary electrical machine is assembled with the rotary electrical machine.