Inspection robots with center encoders are described. An example inspection robot may have a housing, and a drive module, where the drive module has a wheel and a motor and is operatively coupled to the housing. The example inspection robot may also have an encoder to provide a movement value, where the encoder is positioned within a footprint of the housing. The example inspection robot may also have a controller with an encoder conversion circuit to calculate a distance value in response to the movement value, a location circuit to determine at least one of a robot location value or a robot speed value, and a position command circuit to provide a position action command in response to the robot location value or the robot speed value. The drive module may be responsive to the position action command to move the inspection robot.

Inspection robots with center encoders are described. An example inspection robot may have a housing, and a drive module, where the drive module has a wheel and a motor and is operatively coupled to the housing. The example inspection robot may also have an encoder to provide a movement value, where the encoder is positioned within a footprint of the housing. The example inspection robot may also have a controller with an encoder conversion circuit to calculate a distance value in response to the movement value, a location circuit to determine at least one of a robot location value or a robot speed value, and a position command circuit to provide a position action command in response to the robot location value or the robot speed value. The drive module may be responsive to the position action command to move the inspection robot.

A device for a towing vehicle that includes: a drive unit that independently drives each of left and right wheels of a towing vehicle that tows a towed vehicle; an acceleration detection unit that detects an acceleration of the towing vehicle; a drive force detection unit that detects a drive force of the towing vehicle; a mass estimation unit that estimates a mass of the towed vehicle using respective detection results generated by the acceleration detection unit and the drive force detection unit at a time of acceleration of the towing vehicle in a towing state; and a control unit that controls a drive force of the left and right wheels of the towing vehicle in consideration of an influence of the mass of the towed vehicle estimated by the mass estimation unit at a time of turning of the towing vehicle in the towing state.

A robotic vehicle for traversing surfaces is provided. The vehicle is comprised of a chassis supporting a magnetic drive wheel for driving and steering the vehicle and a stabilization mechanism. The magnetic wheel comprises two flux concentrator yokes and an axially magnetized hub extending therebetween. The hub includes a central housing configured to house a sensor probe and enhance the magnetic pull force of the wheel by providing a continuous pathway of high magnetic permeability material for magnetic flux to flow axially through the drive wheel. The stabilization mechanism comprises a front and rear facing support element moveably coupled to the chassis and configured to contact the surface and move symmetrically relative to the chassis thereby maintaining the vehicle and probe normal to the surface and providing stability to the vehicle while traversing surfaces regardless of surface curvature and vehicle orientation.

Inspection robots with independent drive module suspension are described. An example inspection robot may have a housing with a first connector on a first side of the housing, and a second connector on a second side of the housing. A first drive module, having at least one wheel and a first motor, may be operatively coupled to the first connector, and a second drive module, having at least one wheel and a first motor, may be operatively coupled to the second connector. The first and second drive modules may be coupled by a drive connector.

Inspection robots with independent drive module suspension are described. An example inspection robot may have a housing with a first connector on a first side of the housing, and a second connector on a second side of the housing. A first drive module, having at least one wheel and a first motor, may be operatively coupled to the first connector, and a second drive module, having at least one wheel and a first motor, may be operatively coupled to the second connector. The first and second drive modules may be coupled by a drive connector.

Inspection robots with swappable drive modules are described. An example inspect robot may include a first removeable interface plate on the side of a robot chassis. The first removable interface plate may couple a first drive module to an electronic board, within the chassis, where the electronic board includes a drive module interface circuit communicatively coupled to the first drive module. The example inspect robot may also include a second removeable interface plate on a side of a robot chassis. The second removable interface plate may couple a second drive module to an electronic board, within the chassis, where the electronic board includes a drive module interface circuit communicatively coupled to the second drive module.

Inspection robots with swappable drive modules are described. An example inspect robot may include a first removeable interface plate on the side of a robot chassis. The first removable interface plate may couple a first drive module to an electronic board, within the chassis, where the electronic board includes a drive module interface circuit communicatively coupled to the first drive module. The example inspect robot may also include a second removeable interface plate on a side of a robot chassis. The second removable interface plate may couple a second drive module to an electronic board, within the chassis, where the electronic board includes a drive module interface circuit communicatively coupled to the second drive module.

A robotic vehicle for traversing surfaces is provided. The vehicle is comprised of a chassis supporting a magnetic drive wheel for driving and steering the vehicle and a stabilization mechanism. The magnetic wheel comprises two flux concentrator yokes and an axially magnetized hub extending therebetween. The hub includes a central housing configured to house a sensor probe and enhance the magnetic pull force of the wheel by providing a continuous pathway of high magnetic permeability material for magnetic flux to flow axially through the drive wheel. The stabilization mechanism comprises a front and rear facing support element moveably coupled to the chassis and configured to contact the surface and move symmetrically relative to the chassis thereby maintaining the vehicle and probe normal to the surface and providing stability to the vehicle while traversing surfaces regardless of surface curvature and vehicle orientation.

A robotic vehicle for traversing surfaces is provided. The vehicle is comprised of a front chassis section including a magnetic drive wheel for driving and steering the vehicle and a front support point configured to contact the surface. The vehicle also includes a rear chassis section supporting a follower wheel. The front and rear chassis sections are connected by joints including a hinge joint and a four-bar linkage. The hinge is configured to allow the trailing assembly to move side-to-side while the four-bar linkage allows the trailing assembly to move up and down relative to the front chassis. Collectively, the rear facing mechanism is configured to maintain the follower wheel in contact with and normal to the surface and also maintains the front support in contact with the surface and provides stability and maneuverability to the vehicle while traversing surfaces regardless of surface curvature and vehicle orientation.