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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。

2. 发明授权

US5837908A Torque and position sensor 失效
标题翻译：扭矩和位置传感器
公开(公告)号：US5837908A
公开(公告)日：1998-11-17
申请号：US701280
申请日：1996-08-22
申请人： Harris Ng , Lawrence T. Rupert , Mohan J. Devsam
发明人： Harris Ng , Lawrence T. Rupert , Mohan J. Devsam
IPC分类号： G01L3/10 , G01L5/22 , G02L3/02
CPC分类号： G01D21/02 , G01L3/107 , G01L5/221
摘要： A combination torque and position sensor is provided for measuring the torque applied to a rotatable shaft, and measuring the position of the shaft as it is rotated. The combination sensor includes a fixed disc formed of a non-conducting insulating material with a circular resistive position track and a circular resistive torque track disposed around a surface of the disc. A first input voltage supply contact and a first ground contact in fixed relation to one another and are held in rotatable contact with said torque track. A torque signal output contact also held in rotatable contact with the torque track is positioned between the first voltage supply contact and the first ground contact such that torque applied to the shaft alters the relative position between the torque output contact and the first voltage supply and first ground contacts. The torque output contact provides an output voltage signal proportional to the amount of torque applied to said shaft. A second input voltage supply contact and a second ground contact are held in rotatable contact with the position track. At least one position signal output contact is electrically connected to the position track and provides an output voltage signal proportional to the angular position of said shaft.
摘要翻译：提供组合的扭矩和位置传感器用于测量施加到可旋转轴的扭矩，并且在轴旋转时测量轴的位置。组合传感器包括由具有圆形电阻位置轨道的非导电绝缘材料形成的固定盘和围绕盘的表面设置的圆形电阻扭矩轨道。第一输入电压供应触点和第一接地触点彼此固定并且与所述扭矩轨道保持可旋转接触。位于第一电压供应触点和第一接地触点之间的与转矩轨道保持可旋转接触的转矩信号输出触点使得施加到轴上的扭矩改变转矩输出触点和第一电压源之间的相对位置地面接触转矩输出触点提供与施加到所述轴的转矩成正比的输出电压信号。第二输入电压供应触点和第二接地触头保持与位置轨道可旋转接触。至少一个位置信号输出触点电连接到位置轨道，并提供与所述轴的角位置成比例的输出电压信号。

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