111 results about "Net force" patented technology

A touch control method is implemented in an electronic system. A calculation of the product of a pressure value and the area over which pressure is applied are included in touch input data packets representing a touch operation, the values of net force associated with the touch input packets are thus obtained. A signal of a short press, if recognized, with a value of net force greater than a net force threshold can be recognized as a signal of a long press, thus simulating an operation of long press and triggering the selection of an object, where the selection of the object would otherwise require a long press operation. The touch control method operates to significantly speed up selection of an object.

A head stabilizing system is provided. The head stabilizing system is intended to minimize loads on the head and the neck, some of which may be injurious or even fatal, by generating a reaction force that substantially opposes a force acting on the head and generated by rapid deceleration of a vehicle or a crash impact. The head stabilizing system includes a helmet, a connection structure, and at least one resisting member. The resisting member generates a reaction force that opposes the crash impact force, yielding a reduced net force on the head. This reaction force can be generated as a function of position, velocity or acceleration. The resisting member may include a tether, a dashpot, or a dashpot containing a controllable rheological fluid. The viscosity of the controllable rheological fluid can be automatically adjusted in response to changes in status of a vehicle or it's occupant.

A game device calculates a shift angle A based on a magnitude of a velocity vector S of a moving object MO and inclination information that indicates an inclination of a controller, calculates a direction D of the moving object on a slope based on a direction of the velocity vector S of the moving object and the shift angle A, calculates a first force vector P1 in the direction intersecting at right angles on the slope with the direction D of the moving object on the slope based on the inclination information, calculates a second force vector P2 based on a slope angle of the slope, calculates a resultant force vector PS by combining the first force vector P1 and the second force vector P2, updates the velocity vector S of the moving object based on the resultant force vector PS, and updates a position of the moving object MO based on the updated velocity vector.

A computer programmable system and program product for controlling vibrations is provided. The computer programmable system and program product include first program instructions for actively driving a first imbalance mass concentration rotor and a second imbalance mass concentration rotor at a vibration canceling rotation frequency while controlling the rotational position of the first imbalance mass concentration and the second imbalance mass concentration to produce a rotating net force vector to inhibit periodic vibrations. The computer programmable system and program product include second program instructions to opposingly orient the first imbalance mass concentration relative to the second imbalance mass concentration during a starting stopping rotation speed less than the vibration canceling rotation frequency. The system and product preferably include a fault mode control protocol for controlling a rotation of the rotors during a sensed failure of the rotating assembly vibration control system.

A head stabilizing system is provided. The head stabilizing system is intended to minimize loads on the head and the neck, some of which may be injurious or even fatal, by generating a reaction force that substantially opposes a force acting on the head and generated by rapid deceleration of a vehicle or a crash impact. The head stabilizing system includes a helmet, a connection structure, and at least one resisting member. A mounting element is provided to be mounted onto the helmet to connect to the at least one resisting member. The mounting element is preferably attached to the helmet by an adhesive. The resisting member generates a reaction force that opposes the crash impact force, yielding a reduced net force on the head. This reaction force can be generated as a function of position, velocity or acceleration. The resisting member may include a tether, a dashpot, or a dashpot containing a controllable rheological fluid. The viscosity of the controllable rheological fluid can be automatically adjusted in response to changes in status of a vehicle or it's occupant.

The invention provides a limited filling retaining wall earth pressure distribution calculation method. According to the method, the earth pressure distribution is not artificially assumed to be linear, and the method is an expansion and supplement to the Coulomb theory; a rigid limited filling retaining wall is set as an object, the slip surface of the wall is still assumed to be a plane on the basis of the Coulomb theory and a wedge element method, and the action points and action distribution forms and degree of the active earth pressure of the slip surface in general conditions are calculated. The limited filling retaining wall earth pressure distribution calculation method can accurately calculate the resultant force and positions of reasonable action points of the earth pressure behind the retaining wall and grasp the nonlinear distribution of the earth pressure along the back of the wall for carrying out scientific and reasonable design and construction, thereby having important practical significance on scientific and reasonable guidance for the design of the retaining wall.

A method of increasing efficiency and avoiding or reducing potential stall conditions is accomplished by configuring a ripper of a track type tractor responsive to a net force vector acting on the ripper. The net force vector is indicative of the various forces and pressures acting on the ripper, and the values indicative of these forces can be sensed. For instance, the force and value indicative of the force magnitude can be sensed by monitoring driveline torque, whereas the force vector angle can be derived from ripper tilt and lift actuator pressures. The ripper is configured responsive to the force vector magnitude and direction either via a control algorithm, or by inputs generated by an operator.

The invention discloses a zero (micro) gravity suspension method and device with a zero-frequency vibration isolation characteristic and relates to the technical field of zero gravity or micro gravity environmental simulation in the outer space. The problems of space ground simulation, low-frequency and ultralow frequency vibration isolation and the like are solved. The series of suspension devices can be each substantially seen as being formed by connecting a vertical spring and a vertical spring which support gravity support through a connecting rod and a suspended object. According to the basic principle, support force which is equal to the magnitude of the gravity and opposite to the direction of the gravity is provided through geometric nonlinearity arrangement of a spring connecting rod mechanism, so that the resultant force acted on the suspended object within the device design range is zero, and thus the suspended object is in the suspension state. The zero (micro) gravity suspension device can be used for space zero and micro gravity environments including ground simulation experiments such as spacecraft docking, large space flexible structure dynamics performance tests and astronaut training. Through the suspension characteristics of the zero (micro) gravity suspension method device, the problems of low-frequency and ultralow frequency vibration isolation can be solved effectively, and the defect that through a traditional vibration isolation theory, system resonance is difficult to be avoided is overcome.

The invention relates to an infinite space standard vector force calibration device which is used for calibrating the six component forces of a six-component measurement bench of an aero-engine and can be used for calibrating the three component forces of a three-component sensor. The device comprises a gantry frame (1), and three calibration components for generating calibration forces are installed on the gantry frame (1). In the process of calibration, the loading force of a hydraulic loading oil cylinder (4) in a single calibration component can be compared with the calibration force generated by a single-component sensor for calibration on an engine test bench, or, the resultant force of the loading forces of the hydraulic loading oil cylinders (4) in multiple calibration components can be compared with the resultant force measured for calibration on the engine test bench. The influence of unit calibration on the component forces of a measurement system is avoided. The accuracy of measured values of the component forces of the vector engine test bench is improved greatly. Accurate measurement data can be provided for the magnitude, direction and action point of the vector force of a thrust-vectoring engine. An experiment basis can be provided for the study of a thrust-vectoring engine.

A method for producing thrusts in devices where a “Mach” effect mass fluctuation is driven by applying a high voltage, high frequency electrical signal to capacitive circuit elements made with high dielectric constant core material and at the same time applying a current signal of the same frequency to inductive circuit elements arranged so that the magnetic fields produced thereby thread the capacitors perpendicular to the electric fields between their plates. With appropriate relative phase established between the electric and magnetic fields in the dielectric material between the plates of the capacitor, the Lorentz force acting on the lattice ions in the dielectric yields a net force. That net force is a consequence of the fact that in each cycle when the Lorentz force acts in one direction the effective masses of the ions are different from their effective masses in the parts of each cycle where lattice forces act to restore the initial configuration. Operated at sufficiently high frequencies and powers, such devices can produce useful levels of thrust.

A magnetic recording disk drive achieves continuous contact recording with a head-suspension assembly that compensates for the moment generated from an adhesive force between the head carrier or slider and the disk. The slider pivot point, which is the point where the load force is applied to the flexure that supports the slider, is located closer to the front end of the slider than the net force applied by the air-bearing surface of the slider when the disk is rotating at its operational speed. This assures that the net air-bearing force generates a moment about the pivot point to partially counteract the flexure moment and the moment generated from the adhesive force between the disk and the slider's contact pad.

The invention provides an internal cable tension measuring device for a tension attenuation winch, which includes a tension pulley, a big bearing, a force-exerting sleeve, a force sensor, a sensor seat, a flange sleeve and a flat key. The internal cable tension measuring device is characterized in that as force is transversely exerted to the force sensor, the cable tension exerted on the tension pulley is exerted to the force sensor arranged in the flange sleeve along the resultant force direction under the action of the force-exerting sleeve, and suitable gaps are arranged between the flat key and the force-exerting sleeve as well as between the force-exerting sleeve and the flange sleeve, the sensor is free from the influence of the weight of the device, the precision of the stability of the tension measurement is ensured, and the device can be suitable to the variation of the cable wrap angle within a certain range.

The invention discloses a soft tissue deformation modeling method based on virtual springs. The soft tissue deformation modeling method based on virtual springs is based on the spring-particle model to establish an improved real-time deformation model of soft tissue, virtual body springs are added by the topological structure soft tissue surface model combining the square and the isosceles right triangle, so that a more real deformation effect is achieved; at the position of each particle in the system, the superposition of surface springs variable is equivalent to the surface deformation of an object, the resultant force of the elastic forces of the virtual springs is equivalent to the contact force on the surface of the object; the model inherits the advantages of the classical spring particle model that the principle is simple, the model is easy to establish, the calculation speed is quick, at the same time, the model has an ability to control the deformation area.

The invention discloses a force control joint device. The force control joint device comprises a base, elastic mechanism assemblies, a pneumatic muscle structure assembly, a displacement sensor assembly and an output end. The force control joint device is characterized in that the two symmetrically-arranged elastic mechanism assemblies output thrust, the pneumatic muscle structure assembly outputstensile force, and the resultant force of the thrust and the tensile force is used for controlling output force of a joint jointly. The displacement sensor assembly is used for monitoring the currentreal-time deformation quantity of the joint so as to facilitate subsequent data processing and real-time control over the output force of the joint. The force control joint device is used for controlling pressure, and through special structural design, when the joint carries a grinding tool head, under interference of the uneven work surface condition, the contact pressure of the grinding tool head and the surface of a workpiece can be kept to be constant.

Apparatus for Scanning Acoustic Microscopy (SAM) of a semiconductor device including a substrate with an acoustic probe, The substrate has upper and lower surfaces. A sealed lower space provides an environment surrounding the lower surface. An upper ring structure formed above the upper surface includes an upper sealing ring in contact with the upper surface, with the upper sealing structure and the seal forming a dam for retaining the acoustic transmission fluid above the upper surface. A fixture base retains a lower sealing ring in contact with the lower surface surrounding the lower surface. An acoustic scanning probe positioned confronting the upper surface of the semiconductor device extending into the acoustic transmission fluid retained in contact with the upper surface.