95 results about "Mass element" patented technology

A computer-implemented automated building design and modeling and construction project cost estimating and scheduling system (“DMES system”) is described. The DMES system provides a central source for all of the design and construction information for a construction project in a coordinated two-dimensional and three-dimensional spatial database that is freely accessible by all of the members of an interdisciplinary construction project team as a means to produce automatically coordinated design development and construction document information. The DMES system acquires and stores all of the appropriate design, engineering, and construction expertise and information available for any building type for use in automatically assembling and coordinating the design, cost-estimating, and scheduling for a construction project. In one embodiment, the DMES system consists of a plurality of objects, comprising elements and massing elements arranged in an assembly hierarchy. Each of the objects includes programming code that defines an interface and discrete internal functions that define its behavior. When instantiated in the database, the objects automatically create further instances of other objects in the hierarchy, which in turn do the same, thus assembling a complete building model automatically from the initial manually-placed instance. The building model enables automatic generation of drawings and cost and scheduling information. By running automatic iterations of the building model, multiple designs may be evaluated to determine the optimum design.

A continuous or distributed resonator geometry is defined such that the fabrication process used to form a spring mechanism also forms an effective mass of the resonator structure. Proportional design of the spring mechanism and/or mass element geometries in relation to the fabrication process allows for compensation of process-tolerance-induced fabrication variances. As a result, a resonator having increased frequency accuracy is achieved.

A sensor for sensing bioacoustic energy includes a housing comprising an interfacing portion configured to establish coupling with a body part during use. The sensor includes a transducer element coupled to the interfacing portion of the housing and configured to sense sounds produced by matter of biological origin. One or more conductors are coupled to the transducer element. A mass element is compliantly coupled to a surface of the transducer element. Intervening material is disposed between the transducer element surface and the mass element, and allows for differential motion between the transducer element surface and the mass element during excitation of the transducer element.

A tuned mass damper comprising a frame, at least one bendable spring element being connected from its ends to the frame, and at least one mass element being connected to the spring element at a distance from the ends of the spring element, at least one movable spring support element for adjusting the tuning frequency of the damper, and means for moving the spring support element.

An acceleration sensor includes a substrate and a first mass element, which is connected to the substrate in such a way that the first mass element is rotatable about an axis, the first mass element being connected to a second mass element in such a way that the second mass element is movable along a first direction parallel to the axis, and the first mass element being connected to a third mass element in such a way that the third mass element is movable along a second direction perpendicular to the axis.

This invention pertains to a tire having a plurality of vibration absorbers wherein, (i) the vibration absorbers have at least one spring element and at least one absorber mass element, each element having a first and second surface such that the first surface of the spring element is attached to the tire carcass or attached to or embedded into the tire inner liner, and (ii) the first surface of the absorber mass element is attached to the second surface of the spring element, or the absorber mass element is embedded into the spring element.

A passive distributed vibration absorber that utilizes multiple discrete mass elements and a viscoelastic layer and that effectively attenuates vibration in modally dense structures excited by a broadband input noise excitation and is tunable to multiple natural frequencies in such modally dense vibrating structures including low frequencies

A torsional vibration damper, particularly for a drivetrain in a motor vehicle, having a substantially disk-shaped flywheel mass element having a friction surface for cooperating with friction facings of a friction clutch and a damper element arrangement communicating with the flywheel mass element, wherein the flywheel mass element is produced from a sheet metal material.

The invention relates to a biaxial differential capacitive micro-accelerometer, which belongs to the field of inertial sensors in a micro-electro-mechanical system. The micro-accelerometer comprises a sensitive mass element composed of a silicon sheet, four square movable electrodes arranged on the silicon sheet and insulating layers for isolating the movable electrodes, a substrate horizontally opposite to the silicon sheet, four square fixed electrodes arranged on the substrate and corresponding to the four square movable electrode, two lateral folding beams arranged on both ends of the silicon sheet for fixing the silicon sheet, two longitudinal folding beams for fixing the lateral folding beams, and pillars for fixing the two longitudinal folding beams on the substrate, so that the planes of the four movable electrodes are suspended and parallel to the substrate. The invention has the advantages of simple structure and high sensitivity, and can achieve high-accuracy two-dimensional acceleration measurement.

The invention relates to an apparatus and method for constructing a flywheel for energy storage, the flywheel having a drive transfer element (60) and a rim comprising a mass element (10), the drive transfer element being coupled to the rim by a winding (80) around each.

A shock simulation system including a support plane, a first mass element and a first spring element attached between the support plane and the first mass element. Also included, is a second mass element that is attached to the first mass element with a second spring element as well as a cocking apparatus, positioned between the support plane and the second mass element, that is capable of accumulating and storing energy in the spring elements. The system also includes a trigger for releasing the energy stored in the springs and for causing a mechanical shock event that is substantially transferred to the second mass.

A ring gyroscope which comprises a substantially circular and flexible ring which defines a ring plane, one or more primary piezoelectric split transducers configured to drive the ring into resonance oscillation, four or more mass elements which form a symmetrical mass distribution in relation to both a first and a second transversal symmetry axis and to a first and a second diagonal symmetry axis. The ring gyroscope also comprises a suspension structure configured to support the weight of the ring and the mass elements, wherein the suspension structure comprises N outer suspenders, where N is an integer greater than or equal to two, and each outer suspender extends along a ring tangent from a suspension attachment point on the outer edge of the ring to an anchor point.

The invention discloses a universal gravitation interference calculation method based on tetrahedral mass element division for a pure gravity rail, belonging to the technical field of astrodynamics and scientific computing. The method comprises the following steps of: firstly, selecting a tetrahedron as the shape of a mass element to divide a spacecraft and defining the following parameters: a scale parameter SR, a length/width ratio parameter AR, a force geometry factor FGP and a gradient geometry factor GGP; then calculating the FGP and the GGP under different values of the SR and the AR toobtain a curve for representing the influence of the scale and the shape of the tetrahedral mass element on the calculation accuracy; then determining the scale of the tetrahedral mass element according to the required calculation accuracy and the influence curve and dividing a model of the spacecraft through the tetrahedral mass element according to the scale of the mass element; and finally, calculating the universal gravitation. Through the method, the universal gravitation of the spacecraft to the quality verification according to the required accuracy can be calculated. Under a given accuracy, the corresponding requirement on the scale of the tetrahedral mass element can be obtained and the mass element is divided according to the requirement so that the calculation of the universal gravitation is finished and the required accuracy is met.

The disclosure relates to a microelectromechanical gyroscope comprising at least one mass element, a drive actuator and sense electrodes. The at least one mass element is configured to be driven by the drive actuator into oscillating movement with a drive oscillation frequency ω_D, and the sense electrodes are configured to produce a sense signal from the oscillating movement of the at least one mass element. The gyroscope control circuit comprises an amplitude detection unit which detects a sense signal amplitude at the frequency 2ω_D. This amplitude yields a measure of drive oscillation amplitude. Amplitude detection at the frequency ω_D yields a measure of angular rotation rate.