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1. 发明授权

US5763793A Error correcting torque sensor 失效
标题翻译：误差校正转矩传感器
公开(公告)号：US5763793A
公开(公告)日：1998-06-09
申请号：US784410
申请日：1997-01-16
申请人： Harris Ng , John A. De Franco , Matthew B. LaCourse , Mohan J. Devsam , Liu Qiyuan
发明人： Harris Ng , John A. De Franco , Matthew B. LaCourse , Mohan J. Devsam , Liu Qiyuan
IPC分类号： G01L3/10 , G01L3/02
CPC分类号： G01L3/10
摘要： A torque sensor is provided for measuring the amount of torque being applied to a rotatable shaft fitted with a torsion bar between two separate shaft segments. The sensor includes first rotor attached to a first shaft segment such that angular rotation of the first segment is translated to the rotor. A second rotor is attached to the second shaft segment such that angular rotation the second shaft segment is translated to the second rotor. The first rotor supplies two pairs of signal voltage references circumferentially spaced around a surface of the first rotor. At least one resistive track having a uniform linear resistance extends between the voltage signal references of each pair. A pair of contact carriers are positioned between the first and second rotors. Surface features formed in the contact carriers and the first rotor couple the contact carriers to the first rotor such that the contact carriers are constrained to move anullarly around the central axis of rotation of the first rotor. The contact carriers are anullarly driven by the second rotor. First and second signal contacts are mounted to said the contact carriers, and are configured to engage the at least one resistive track at a points between the said first pair of signal voltage references, and said second pair of signal voltage references respectively. Output voltage signals are developed from said first and second signal contacts proportional to the relative position of said signal contacts between said voltage reference pairs. A method of correcting signal errors introduced from misalignment of the two shaft segments is provided by subtractively averaging the two independent voltage signals.
摘要翻译：提供扭矩传感器，用于测量施加到在两个分离的轴段之间配有扭杆的可旋转轴的转矩的量。传感器包括附接到第一轴段的第一转子，使得第一段的角旋转平移到转子。第二转子附接到第二轴段，使得第二轴段的角旋转平移到第二转子。第一转子提供围绕第一转子的表面周向隔开的两对信号电压基准。具有均匀线性电阻的至少一个电阻轨迹在每一对的电压信号基准之间延伸。一对接触载体位于第一和第二转子之间。形成在接触载体和第一转子中的表面特征将接触载体连接到第一转子，使得接触载体被限制为围绕第一转子的中心旋转轴线而空转。接触载体由第二转子无级驱动。第一和第二信号触点安装到所述触点载体上，并且被配置为分别在所述第一对信号电压基准与所述第二对信号电压基准之间的点处接合所述至少一个电阻轨道。从所述第一和第二信号触点产生输出电压信号，与所述电压参考对之间的所述信号触点的相对位置成比例。通过对两个独立电压信号进行减法平均来提供校正由两个轴段的未对准引起的信号误差的方法。

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