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光學尺白皮書

下載最新的 Renishaw 光學尺技術白皮書。

  • 白皮書: 妥善安裝光學尺以達最佳熱性能 白皮書: 妥善安裝光學尺以達最佳熱性能

    當機器的溫度改變時,許多機器零件的長度會因熱膨脹而改變。所有的光學尺和機器的其他元件一樣,都遵守相同的熱定律:光 學尺的長度會隨著溫度變化而改變。產生的誤差也許在可以接受的範圍內,或者可以透過控制機器的作業環境來控制誤差,但即 使是攝氏一度的溫度變化,都可能導致測量誤差超過十個百萬分點 (10 μm/m)。本白皮書會探討如何控制光學尺的熱膨脹程度。其中包括幾種選擇,可用來計算和補償因熱引起的應變。亦會說明當光學尺和基材的膨脹失配時,會如何影響光學尺系統的整體效能。

    [604kB]
  • White paper:  Safety first - the position determination and checking algorithms of the RESOLUTE™ true-absolute optical encoder White paper: Safety first - the position determination and checking algorithms of the RESOLUTE™ true-absolute optical encoder [en]

    This white paper gives an overview of the operation of the RESOLUTE absolute encoder and describes in detail the safety aspects of its position determination and checking algorithms.

    [328kB]
  • White paper:  The accuracy of angle encoders White paper: The accuracy of angle encoders [en]

    Many automation systems rely on precision rotary motion, such as rotary format computer-to-plate (CTP) pre-press machines, machine tool A, B & C axes, surface mount machines and wafer handling and inspection equipment. Different applications demand different combinations of performance and features to optimise their function – some require accuracy, others repeatability, high resolution or low cyclic error for velocity loop control. Typically customers need an encoder that offers the optimum balance of specification and function, and there is a bewildering array to choose from. Yet few are capable of meeting all requirements.

    [1.4MB]