| Summary: | 碩士 === 國立成功大學 === 製造資訊與系統研究所碩博士班 === 100 === Electric injection molding machine not only more clean, energy saving, low noise, more precision etc, but also more environmentally with world trends. But the electric injection molding machine there has been a issue the injection axis underpowered lack of keep pressure that main cause electric injection molding machine didn’t replace hydraulic injection molding machine complete. The large tonnage servo motor manufacturing isn’t easy and the cost is too high, so this article focus on serial two motor synchronous control, it’s mean two motor work together on a screw. By this method instead of the large tonnage servo motor as injection axis power source and use the servo synchronization control method make two motor work together. Expected to have more holding pressure to solve the problem of pressure.
On the platform of injection axis, experiment the servo synchronization control method. In single axis control use the proportional controller and feedforward controller. In two axis architecture, use error feedback controller (EFBC). By experimental result show the EFBC can reduce the error when dual servo motor work together.
In experimental tests, use three speed curves and two pressure curves for experimental verification. The experimental results show that the study of the servo synchronization control architecture to reduce the error of the dual motor range in ± 1 degree.
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