本文叙述笔描记录器的几何误差和几种直线补偿方法。一、笔描记录器的几何误差记录随时间变化信号的常用手段之一是笔描记录器。它的特点是:频响合适(0～100Hz左右)、构造简单、精度不差、价格中等。在医学临床和生理研究领域中它被应用来记录各种生物电信号和其他信号,例心电、脑电、眼电、肌电、脉波、血压波等。最简单的笔描记录器为普通的墨水笔记录器,如图1。当线圈转动时,笔尖的轨迹是以R为半径的圆弧。利用正余 This article describes the geometry of the pen recorder and several methods of rectilinear compensation. First, the pen recorder geometry error recording signal changes over time is one of the common means of pen recorder. It is characterized by: frequency response (0 ~ 100Hz or so), simple structure, accuracy is not bad, the price is medium. It is used to record a variety of bioelectrical signals and other signals such as ECG, EEG, EOG, EMG, pulse wave, blood pressure wave and so on in the field of medical clinical and physiological research. The simplest pen recorder for the ordinary ink pen recorder, shown in Figure 1. When the coil is rotated, the tip of the nib is circular with an arc of radius R. Use positive and negative