Linear and circular interpolation are often hard-wired into the control unit.

直线和圆弧插补往往很难连接到控制单元。

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Then, focused on off-line interpolation calculation and the speed planning, the linear interpolation, circular interpolation, extended line interpolation and spline interpolation are discussed.

首先分析了离线轨迹规划的思路和策略，然后重点讨论了构成轨迹规划的两大核心技术：离线插补计算和速度规划。

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Non-circle curve is one of familiar outlines, but most numerical control machine tools only have linear interpolation and circular interpolation.

非圆曲线轮廓是机械零件常见的轮廓要素之一，绝大多数数控机床只具备直线插补和圆弧插补功能。

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