发明授权
- 专利标题: Systems and methods for normalizing PID control across injection molding machines
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申请号: US16123205申请日: 2018-09-06
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公开(公告)号: US11407158B2公开(公告)日: 2022-08-09
- 发明人: Gene Michael Altonen , Brian Matthew Burns
- 申请人: IMFLUX INC.
- 申请人地址: US OH Hamilton
- 专利权人: IMFLUX INC.
- 当前专利权人: IMFLUX INC.
- 当前专利权人地址: US OH Hamilton
- 代理机构: Marshall, Gerstein & Borun LLP
- 主分类号: B29C45/77
- IPC分类号: B29C45/77 ; B29C45/78 ; B29C45/76
摘要:
In order to reduce oscillations in process variables of an injection molding process, an injection molding machine may be operatively connected to a model database that stores models of injection molding machines and molds. A tuning controller may set initial gain values of a variable-gain proportional-integral-derivative (PID) controller. To set the initial gains, the tuning controller may be configured to obtain, from the model database, a model for a first and second injection molding machines and a model for a mold. The tuning controller may analyze the models to determine a correlation between injection molding machine parameters and mold cycle performance for the mold. Accordingly, the tuning controller may apply the correlation to determine an initial gain value for a least one of the first, second, and third gains of the PID controller. The tuning controller may then set the initial gain values for the PID controller.