A method of calibrating a force sensing device comprises establishing an optimized force-resistance curve by obtaining a mean resistance of a plurality of force-resistance curves for a set of substantially similar force sensing devices and measuring calibration data of the force sensing device. The method applies a plurality of calibration points defined from the measuring step to the optimized force-resistance curve and adapts the optimized force-resistance curve to form an adapted force-resistance curve by interpolating the plurality of calibration points and determining a multiplier value for each calibration point.

A method and an apparatus detects pressure changes at servo gun tips of a robotic welding system having a servo gun with a movable tip and an opposed fixed tip configured to weld a part. The method and apparatus observe a tip deflection value and convert the value to a current pressure value using a pressure estimator. The current pressure value is compared to a benchmark pressure value to detect any difference.

An electronic device comprises a housing, a motion sensor configured to sense motion of the housing, and a processor configured to determine an impact geometry based on the motion. A countermeasure system comprises an actuator coupled to an actuated member. The actuated member is operable by the actuator to modify the impact geometry, so that impact energy is redirected away from an impact sensitive component of the electronic device to an energy absorbing component of the electronic device.

A force/torque sensor includes a number n of deformable beams connecting the TAP to the MAP, wherein n4. At least four of the n deformable beams are instrumented with strain gages affixed to surfaces of the beams, such that each beam outputs two gage signals. The eight gage signals are grouped into four sets of six gage signals, such that each set includes the gage signals from three of the four instrumented beams. Each set of six gage signals is multiplied by a calibration matrix to yield a set of six force and torque values. The four sets of force and torque values are compared. If one set disagrees with the other three by greater than a predetermined tolerance, a sensor fault is signaled.

A calibration monitoring system is provided to automatically monitor the calibration status of tools and other inventory items, such as upon the items being issued from or returned to the automated calibration monitoring system. The system identifies an inventory item, for example a calibrated torque wrench or other calibrated tool identified based on a unique identifying tag attached thereto. The system retrieves a calibration parameter value for the item from a calibration database, and completes a calibration measurement of the item based on the calibration parameter value. In the example, a torque measurement of the calibrated torque wrench can thus be automatically completed. In turn, the system determines a current calibration status of the item based on the calibration measurement, and selectively enables or disables issuance of the inventory item from the system according to the item's status as being in calibration or out of calibration.

Systems and methods for calibrating a force input device are disclosed. The force input device includes a force-sensitive structure with a number of individual force sensors that compress or expand in response to input. The force input device measures an electrical property of the force sensors of the force-sensitive structure. After the force sensors are measured, the values obtained are adjusted based on a mechanical model of the response of the force sensitive structure. Upon receiving a force input event of high magnitude, the force input device recalibrates the mechanical model.

Provided in the present application are an assistance system and method for a suspension device, and an X-ray imaging system. The suspension device includes a tube device, a tube controller, a motion driving device and an assistance system. The motion driving device is capable of driving the suspension device to move along a first coordinate system. The assistance system includes a measurement device and a control device. The measurement device is disposed between the tube device and the tube controller so as to obtain an initial force of an operator, wherein the initial force includes the magnitude and direction of a force along a second coordinate system in which the measurement device is located. The control device includes a calibration unit and a calculation unit. The calibration unit is used for calibrating the initial force to obtain a calibrated force. The calculation unit is used for performing a coordinate transformation on the calibrated force to obtain a torque value corresponding to the first coordinate system, and sending the torque value to the motion driving device to enable the motion driving device to provide assistance on the basis of the torque value.

A calibration monitoring system is provided to automatically monitor the calibration status of tools and other inventory items, such as upon the items being issued from or returned to the automated calibration monitoring system. The system identifies an inventory item, for example a calibrated torque wrench or other calibrated tool identified based on a unique identifying tag attached thereto. The system retrieves a calibration parameter value for the item from a calibration database, and completes a calibration measurement of the item based on the calibration parameter value. In the example, a torque measurement of the calibrated torque wrench can thus be automatically completed. In turn, the system determines a current calibration status of the item based on the calibration measurement, and selectively enables or disables issuance of the inventory item from the system according to the item's status as being in calibration or out of calibration.