Hybrid terrain-adaptive lower-extremity apparatus and methods that perform in a variety of different situations by detecting the terrain that is being traversed, and adapting to the detected terrain. In some embodiments, the ability to control the apparatus for each of these situations builds upon five basic capabilities: (1) determining the activity being performed; (2) dynamically controlling the characteristics of the apparatus based on the activity that is being performed; (3) dynamically driving the apparatus based on the activity that is being performed; (4) determining terrain texture irregularities (e.g., how sticky is the terrain, how slippery is the terrain, is the terrain coarse or smooth, does the terrain have any obstructions, such as rocks) and (5) a mechanical design of the apparatus that can respond to the dynamic control and dynamic drive.

For measuring tensile and/or compressive loads force measuring systems are provided for measuring a tensile and/or compressive load of a structure have a first force measuring sensor assigned to the structure, and a second force measuring sensor assigned to the structure. To provide a force measuring system that enables high measuring accuracy, the first and the second force measuring sensor differ in such a way, that the first force measuring sensor is designed to measure a nominal load range, and the second force measuring sensor is designed to measure a sub-range of the nominal load range.

A robot includes a rotation axis and a torque sensor. The torque sensor is disposed on the rotation axis, and includes a strain generating body and a strain sensor. The strain sensor is mounted on a portion of the strain generating body. The strain generating body includes an inner flange, a ring-shaped outer flange, and a plurality of spokes. The outer flange is disposed further outward than the inner flange in a radial direction of the inner flange. The plurality of spokes are disposed between the inner flange and the outer flange and connect the inner flange and the outer flange to each other. At least one spoke of the plurality of spokes is a separate spoke which is un-integral to the inner flange and the outer flange and on which the strain sensor is mounted.

In accordance with an embodiment of the disclosure, a method includes detecting a first parameter indicative of lateral movement of a top drive system with respect to a rotational axis of the top drive system with a first plurality of sensors and detecting a second parameter indicative of lateral movement of the top drive system with respect to the longitudinal axis of the top drive system with a second plurality of sensors. The first parameter is different from the second parameter. The method also includes transmitting the first parameter and the second parameter to a monitoring system and comparing the first parameter to a first threshold value and comparing the second parameter to a second threshold value with the monitoring system. Detecting the first parameter and the second parameter includes detecting lateral movement of a mud saver valve configured to flow mud through a sealed passage.

A circuit controls a height-adjustable table. A current load acts on the table plate and is measured by a force-sensitive sensor and serves as control signal of a control according to the invention. Derived from this signal, a collision of the electrically height-adjustable table with fixed objects is recognized. Control signals are also detected, which are inputted by an operator of the table in the form of applications of force onto the table plate. Here the table or respectively the control device is situated in a state of rest until the user of the table exerts a brief force impulse onto the table plate, i.e. presses once onto the table plate. Thereafter, the control changes from a state of rest into an operating state and waits for control inputs. When the user now presses from above onto the table plate, the latter moves electrically downwards.

External External loading test apparatus comprising: a structure with at least three pillars supporting a platform, the platform being configured to receive a podded electric propulsion motor in a hanging position while allowing operation of said pod, at least a test subsystem, for applying a force on the pod to simulate full scale external loading.

A method for estimating a level of stress that a mine truck is subjected to. The mine truck includes a frame; a container for carrying payload supported by the frame; and at least one sensor, the at least one sensor delivering signals being dependent on a force acting on the mine truck. The method includes for at least a first position of the frame, estimating a level of stress that said at least a first position is subjected to in response to a force acting on the mine truck, wherein said at least a first position is a position being different from the position of said at least one sensor; and estimating said level of stress utilising a model representation of the level of stress for said at least a first position wherein said model representation output said estimated level of stress utilising sensor signals from said at least one sensor as input signals.

[Object] To provide a torque sensor and power control actuator that are reduced in size and are capable of detecting torque with high accuracy. [Solution] The torque sensor includes: a first rotating body capable of making axial rotation about an input axis; a second rotating body capable of making axial rotation about an output axis; a strain generation part provided between the first rotating body and the second rotating body, having a first surface facing one side in a first direction parallel to the input axis and a second surface facing the other side in the first direction, and configured to transfer rotation torque while generating a strain between the first rotating body and the second rotating body; and a plurality of strain detection parts provided on the first surface and the second surface, respectively, to detect a strain of the strain generation part.

A methods and system to operate hydraulic fracturing units may include utilizing hydraulic fracturing unit profiles. The system may include hydraulic fracturing units may include various components. The components may include an engine and associated local controller and sensors, a transmission connected to the engine, transmission sensors, and a pump connected to the transmission and powered by the engine via the transmission and associated local controller and sensors. A supervisory controller may control the hydraulic fracturing units. The supervisory controller may be in communication with components of each hydraulic fracturing unit. The supervisory controller may include instructions to, for each hydraulic fracturing units, obtain hydraulic fracturing unit parameters, determine a hydraulic fracturing unit health assessment, and build a hydraulic unit profile including the health assessment and parameters. The supervisory controller may, based on the health assessment, determine the hydraulic fracturing unit's capability to be operated at a maximum power output.

A load cell system for measuring rod load in a pumpjack. The system includes a tension load cell operatively coupled to a bridle between first and second bridle cables at a location longitudinally spaced between a horsehead and a bridle plate of the pumpjack. The bridle plate is coupled to the first bridle cable at a first connection point and the tension load cell is coupled to the first bridle cable at a second connection point longitudinally spaced between the bridle plate and the horsehead. The load cell system defines a third connection point longitudinally spaced between the second connection point and the horsehead. The load cell system is configured to maintain substantially constant longitudinal distances between the second connection point and each of the first and third connection points during operation of the horsehead. The load cell system is further configured to maintain a substantially constant lateral distance between the first and second bridle cables at the third connection point during operation of the horsehead.