ORION CPC7510 750MHZ 133MHZ POWERPC IBM750FX/GX COMPACTPCI 1MB L2 CACHE W/DDR(趙興龍,203a)但是這樣的理論研究并未翻轉課堂的領悟產生個令人滿意的效果。翻轉教學自身定位不,容易產生師生關系”失位“、知識難度”越位“、適用象”錯位“等局限性。(趙興龍,203a)只有正認識翻轉課堂的內涵,厘清翻轉課堂中學習是如何發生的,才有可能設計恰當的翻轉課堂教學模式,提升課堂教學質量。運動控制器將機床運動控制、邏輯控制功能由獨立的運動控制器完成,運動控制器通常以PC硬件插件的形式構成系統。數控上層軟件(數控程序編輯、人機面等)以PC為平臺,運行于Windows等主流操作系統上,這已成為開放式數控系統發展的主流結構模式。

推出的PMAC(ProgrammableMutli-axesCon-troller)開放式多軸運動控制器為代表,DELTATAU公司利用NGC,OMAC等協議,采用PC加PMAC控制器構成的PMAC開放式數控系統,獲得了良的應用前景。
PMAC運動控制器提供了運動控制、離散控制、內務處理、同主機的交互等數控功能,它借助于Motorola的DSP 5600/56002數字信號處理芯片,可同時控制~8個軸,它的速度、分辨率、帶寬等指標遠優于般控制器,其伺服控制包括PID加NOTCH和速度、加速度等前饋控制,它甚至可連接NACRO現場總線的高速環網,直接進行生產線的聯動控制。
般來說,伺服控制能力只能用每h完成的操作或生產的合格零件來衡量。當今,產品質量的要求已超過生產率的要求,所以在設計系統時,系統的每部件都要,而于PMAC運動控制器來說,無論在處理能力、軌跡特性和輸入帶寬特性方面,其性能都遠遠地優于傳統的運動控制器。
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