Abstract: A fuel flow measuring system includes an ultrasonic fuel flow sensor. The fuel flow sensor includes a first transducer and a second transducer. The first transducer is excited at multiple different excitation frequencies and a voltage, an electric current, and a phase difference between the voltage and the electric current is sensed at the first transducer during excitation. Data points are generated based on the sensed readings and a model is fit to the data points to determine a complex impedance spectrum. The complex impedance spectrum indicates a range of excitation frequencies within a range of a peak resonance frequency of the first transducer. One or more characteristics of excitation signals directed to the second transducer are set based on the determined complex impedance spectrum. In this manner, the signal to noise ratio of ultrasonic signals emitted by the second transducer and received by the first transducer can be maximized.

Abstract: A liquid fuel system for a turbine engine may include one or more sensors configured to generate sensor outputs corresponding to one or more phase properties of a fuel supplied to the turbine engine through a fuel pathway, and a controller configured to generate control commands configured to control one or more controllable components of the liquid fuel system based at least in part on the sensor outputs. The one or more sensors may include one or more phase detection sensors. The fuel may include hydrogen. The fuel may have a liquid phase state.

Abstract: System and methods for analyzing a multiphase production fluid include a fluidic supply and analysis unit configured to transition the fluidic separation chamber to a static state after a complete gaseous phase column and a complete oil phase column are formed within the fluidic separation chamber; communicate with the fluidic separation detector to measure the absolute or relative sizes of the complete gaseous phase column and the complete oil phase column; and calculate an oil/gas volume fraction as a function of the measured sizes of the gaseous phase and oil phase columns in the fluidic separation chamber.

Abstract: The objective of the present invention is to measure gas concentration with a high degree of accuracy. A gas sensor is provided with: a sensor enclosure: an ultrasonic transducer provided at one end of the sensor enclosure; an ultrasonic wave reflecting surface which is provided at the other end of the sensor enclosure and which intersects an axial direction of the sensor enclosure; and a plurality of ventilation holes provided in a side wall of the sensor enclosure. The plurality of ventilation holes are provided at positions such that one side of the sensor enclosure cannot be seen from the other side thereof when viewed from a side surface side of the sensor enclosure, and each ventilation hole has a shape extending in the axial direction of the sensor enclosure.

Abstract: Disclosed herein are novel slew drive components and systems. In some cases, a slew drive system can comprise a sensor configured to measure deformation in a deformation element of a sensor carrier component, which can result from axial displacement of a worm gear of the slew drive system. In some cases, measured deformation of a deformation element can be used to determine torque applied to a worm gear by a slew drive worm wheel, as described herein.

Abstract: An excitation device exciting a vehicle by applying a vibration to at least one of a plurality of tires of the vehicle, which includes: a first restricting part arranged in one of a front and rear direction of at least one of the plurality of tires to restrict a movement of the vehicle in the front and rear direction, a second restricting part arranged in another of a front and rear direction of the one of tires to restrict a movement of the vehicle in the front and rear direction, and an actuator configured to be able to drive at least one of the first restricting part and the second restricting part so as to increase or decrease a distance between each other in a front and rear direction of the vehicle.

Abstract: An interface assembly for connecting an on-board propulsion system to a testing facility includes a support member configured for coupling to a manipulation system and a mounting member configured for coupling to the on-board propulsion system. A plurality of channels extends between and couples the mounting member to the support member.

Abstract: A method for predicting dummy head injury during an automobile collision includes: enabling a dummy head to collide with a rigid flat plate; obtaining a first data set in a collision process; calculating the maximum contact force of the dummy head and the rigid flat plate in the collision process according to the first data set; dividing a duration of the collision process into a plurality of time intervals; and calculating an injury value of the dummy head in each time interval according to the maximum contact force, and selecting the maximum injury value as a target injury value. The method provided by the present application may realize prediction for the head injury under different scene working conditions, and has the advantages of being simple in test flow, and high in prediction precision.

Abstract: An apparatus for measuring a soil condition includes a shank configured to engage with a drawbar, an array of movable pads carried by the shank, and a plurality of sensors. Each of the movable pads are spaced at different distances from a point at which the shank is configured to engage the drawbar. Each sensor is coupled to at least one movable pad of the array of movable pads and configured to measure deflection of the at least one movable pad relative to the shank as the shank is dragged through soil by the drawbar. A method of measuring a property of soil includes dragging the shank through soil and measuring deflection of the movable pads relative to the shank as the shank is dragged through soil.

Abstract: A tire defect detection system for detecting defects in a tire. The system includes at least one infrared camera, a pneumatic source and a computing device. The pneumatic source inflates the tire to a predetermined pressure. After inflation, the infrared camera captures a reference frame of a section of the tire. A period of time after capturing the reference frame, the infrared camera captures a subsequent frame. The subsequent frame is compared to the reference frame to detect a portion of the section of the tire that has a lower temperature. The lower temperature is caused by an escape of air from the tire through a defect. The escaping air cools the area of the tire around the defect, so a decrease in temperature indicates the defect.

Abstract: A simulation device for magnetic closing of flap valve is disclosed, which includes a worktable, a driving mechanism for driving the worktable to rotate, a valve seat, a magnetic valve cover movably connected with the valve seat, a first magnet for repelling the magnetic valve cover, a cylinder, a lifting equipment for driving the cylinder to rise and fall. When the cylinder is inserted into the valve seat driven by the lifting equipment, the cylinder prevents the closure of the magnetic valve cover. When the cylinder is out of contact with the magnetic valve cover driven by the lifting equipment, the magnetic valve cover is closed, and the worktable in the simulation device can rotate and turn over, so that the closing process of flap valve (valve seat and valve cover) in any direction of deep drilling coring under the action of magnetic force is simulated.

Abstract: A fluid distribution system includes a first flow meter configured to be positioned along an agent line, a metering valve configured to be positioned downstream of the first flow meter, a second flow meter configured to be positioned downstream of the first flow meter and an eductor, and a controller configured to selectively operate the fluid distribution system in a testing mode where the controller is configured to acquire a first flow rate of a fluid flowing through the first flow meter and a second flow rate of the fluid flowing through the second flow meter, determine a performance characteristic based on the first flow rate and the second flow rate, and modulate a current setting of the metering valve from a first setting to a second setting and conduct the testing mode sequence again at the second setting to verify the fluid distribution system is performing properly.

Abstract: This control device 6 comprises a uniform-speed synchronization control unit 63 for generating a synchronization correction input Fd for front-wheel and rear-wheel dynamometers so that a difference between front and rear speeds is eliminated, a load balance computation unit 62 for generating a front-wheel load balance correction input Ffil_f and a rear-wheel load balance correction input Ffil_r, a front-wheel torque current command generation unit 64f for generating a front-wheel torque current command on the basis of the inputs Ffil_f and Fd, and a rear-wheel torque current command generation unit 64r for generating a rear-wheel torque current command on the basis of the inputs Ffil_r and Fd. The load balance computation unit 62 causes the inputs Ffil_f and Ffil_r to change independently of one another, raises the input Ffil_f a rear-wheel drive force Fvr increases, and raises the input Ffil_r as a rear-wheel drive force Fvf increases.

Abstract: A system for analyzing a multiphase production fluid, the system including a pipeline, an inlet divider having a set of analyzing apertures with densitometers and a set of production apertures, a fluidic separation chamber with flowmeters, a pressure control valve, and a fluidic control unit. Each analyzing aperture of the set of analyzing apertures disposed on a vertically-oriented axis of the inlet divider. The pipeline is configured to supply the multiphase production fluid to the inlet divider. The inlet divider is configured to provide an analysis portion of the multiphase production fluid to the set of analyzing apertures. The inlet divider is configured to provide a production portion of the multiphase production fluid to the set of production apertures. The set of analyzing apertures is configured to provide the analysis portion to the fluidic separation chamber.

Abstract: Systems and methods for analyzing soil are generally provided. In particular, the disclosure provides systems and methods for determining bulk density of soil using rotational soil penetrometers. In some embodiments, the bulk density is determined by obtaining spectroscopic data and penetration torque data from the rotational soil penetrometer, and determining the bulk density of the soil based at least in part on the spectroscopic data and the penetration torque data. Bulk density may be combined with in situ measurements of elemental composition (e.g., carbon content) of soil in order to calculate total quantities of an element (e.g., carbon) in an area's topsoil. Also disclosed herein are systems and methods for modeling bulk density and/or carbon content of soil, based at least in part on spectroscopic data and penetration torque data. For example, trained statistical models determination are provided herein.

Abstract: A vehicle inspection device for an inspection implemented with a tire of a vehicle idling includes a tire supporter. The tire supporter includes rollers structured to allow the tire to idle; a housing supporting the rollers so as to allow the rollers to rotate; a stopper contained in the housing and structured to move up and down and butt into the tire disposed on the rollers; and a link mechanism structured to elevate the stopper. The vehicle inspection device is structured to be disposed on a plane that allows the vehicle to run thereon.

Abstract: A tire ground contact characteristic measuring method according to the present invention includes: a reproduction step of reproducing a transient change in a tire attitude that occurs during travel of an actual vehicle on a tire; a stress measurement step of causing stress measuring portion embedded on a rotatable rotary drum to measure stress that is applied to the tire in contact with the rotary drum that is rotationally driven; and a calculation step of calculating tire ground contact characteristics, which are characteristics of a ground contact region of a tread surface of the tire in contact with the rotary drum on the basis of the stress measured by the stress measuring portion. The tire ground contact characteristics calculated in the calculation step are tire ground contact characteristics of the tire corresponding to the tire attitude of the actual vehicle at each point in time during a period where the transient change occurs.

Abstract: A system for removing dead volume in a sensor assembly of a mass flow controller is presented. The system comprises a valve assembly communicable coupled to the sensor assembly. The valve assembly is in fluid communication with fluid in a primary flow path and the sensor assembly is in fluid communication with fluid in the primary flow path. The sensor assembly comprises a pressure transducer having a first reservoir and another pressure transducer having a second reservoir. The first reservoir has a port in fluid communication with fluid in a sampled flow path. The second reservoir is coupled to a second pressure transducer and is fluidly coupled to the first reservoir through a flow through path. The second reservoir also includes another port for communicating the flow of fluid from the flow through path to another flow path. A flow rate restrictor is disposed in the flow through path.

Abstract: A three degree of freedom hardware in loop simulation system and its working method are provided. A triaxial air-bearing turntable is installed on a support frame. An air bearing support seat provides high-pressure gas lubrication to make an air bearing hemisphere freely roll and rotate. An attitude control system is installed on a test platform, and the platform is placed on an adapter plate, which is placed above the hemisphere. A position limiting protection device has a position limiting ring, which is located below the adapter plate and surrounds the hemisphere. The movement of the ring prevents the platform from deviating beyond a set angle. An automatic leveling device is located below the side of the platform and a leveling device control box is installed on the platform.

Abstract: Methods and apparatus for checking emitter bonds in an irrigation drip line and for manufacturing drip line in a manner that allows the bond between the in-line emitter and surrounding conduit to be checked. In one form, a downstream in-line vacuum tester is provided for monitoring the amount of air escaping from outlet openings in the drip line to detect excessive air associated with poorly bonded emitters.