Eaton Corporation

Joseph B Dierker, Jr

Thomas A Gee

Glen D Peterson

John Dresden, Iii

Sensors (170, 172) for sensing articulation angle (AA) and/or a time derivative thereof (dAA/dt, d.sup.2 AA/dt.sup.2) for a trailer anti-swing control system are provided. In the preferred embodiments, at least the active transducers of the sensors are mounted to the tractor (12) subvehicle of the articulated vehicle system (10).

Articulation angle sensor

A dual speed sensor pickup assembly (140) for sensing the rotational velocity of two independently rotatable, closely axially spaced exciter rotors (116 and 118) is provided. The pickup assembly includes two speed sensor assemblies (136 and 138) each including a pole piece (152,160) having a longitudianl axis (152a,160a) with the longitudinal axes skewed relative to one another but radial relative to the common axes of rotation (24) of the exciter rotors. Each speed sensor includes a permanent magnet (154,162) disposed between an end of the pole piece (152,160) and having a face divided into first and second surface (154a,154b and 162a,162b) by a slot (154c,162c) therein. In one embodiment a primary coil (156,164) and a secondary or anti-cross talk coil (158,166) surrounds the pole piece of each sensor (136,138), and each secondary coil is conductively connected to the primary coil of the other sensor. In another embodiment, an electronic circuit (176) is provided for producing anti-cross talk signals which are added to the speed sensor signals.

Dual speed sensor pickup assembly with anti-cross talk coils

A dual speed sensor pickup assembly (140) for sensing the rotational velocity of two independently rotatable, closely axially spaced exciter rotors (116 and 118) includes two pole piece assemblies (136 and 138) having axes skewed relative to one another, but radial relative to the common axes of rotation (24) of the exciter rotors. Applications include drive axles and antilock brakes.

Dual speed sensor pickup assembly

An in-axle wheel speed sensor exciter rotor assembly (100) for sensing the rotational speeds of a drive axle ring gear (14/30) and a drive axle differential side gear (48) is provided. The assembly includes a tubular member (102) having teeth (110) for engagement with slots (112) provided on the side gear hub (48a) and carrying a first exciter rotor (116) at the opposite end (114) thereof. A second exciter rotor (118) is axially retained on the tubular member axially adjacent the first exciter rotor and is rotatable relative thereto. The second exciter rotor carries a coupling device (124/128) for engagement with threaded bores (126) provided in the drive axle ring gear/carrier assembly to rotationally couple the second exciter rotor to the ring gear and to axially retain the assembly (100) within the drive axle.

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Southfield, MI, United States of America

Joseph B Dierker, Jr