2012 Fiscal Year Final Research Report
Establishment and Verification of Force Control System Design Methodfor High-performance Injection Molding Ultracompact Machine without Force Sensor
| Project/Area Number |
22560441
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Control engineering
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| Research Institution | Kagawa National College of Technology |
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Principal Investigator |
URUSHIHARA Shiro 香川高等専門学校, 電気情報工学科, 准教授 (90311092)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 制御システム / センサレス力覚フィードバック |
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| Research Abstract |
We have proposed the use of a reaction force observer based on the two-inertia resonant model. However, this method has some estimated error because of the influence of nonlinear characteristics of the holding process and the screw back-pressure process. The estimation accuracy of the reaction force observer depends on parameter variations and the non-linear friction phenomenon. In the holding process, the influence of static friction is reduced by inserting a small-amplitude periodical signal in the force command value so as to improve the estimation accuracy. Further, when the injection material changed, it has a potential to affect the estimation accuracy. In this research, we propose a new injection force estimation method which considers the influence of injection material. Moreover, the availability of proposed method is confirmed by the simulation results using the actual measured value.
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