226 results about "Inertial moment" patented technology

A cost effective method for detecting, classifying and tracking the pedestrian present in front of the vehicle by using images captured by near infrared (IR) camera disposed on the vehicle, the said method comprises the processor implemented steps of: detecting the road to focus of attention for filtering the region of interest (ROI) objects in the said image by estimating the ground region characterized by identifying smooth regions connected to bottom most part of the image; eliminating the non-ground objects based on their distance to ground; filtering the non-ROI objects based on the shape of such objects by computing the signal to noise ratio (SNR) which is a measure of regularity of the component based on its periodicity of its contour for each of such non-ROI objects; eliminating the non-vertical objects by computing inertial moment relative to x and y axis with respect to the centre of mass of such non-vertical objects; classifying the pedestrians in the analyzed frame of the image based their shape; and tracking the movement of the classified pedestrian using mean shift algorithm.

A conduit (106), with geometry designed to enhance pressure sensitivity, is vibrated at resonance in two modes along different cross-sectional axes (a, b). Measuring the change in the frequency ratio squared of the modes yields a substantially linear relationship to pressure that is substantially immune to other material properties and other environmental factors. Moments of inertia in different cross-sectional axes are related to pressure as a result of the elliptical or oral cross section of the conduit (106).

Vibrations generated by the wheel units of a vehicle are reduced by a low pulsating operation that optimally simulates actual vehicle operating conditions. For this purpose the mass moment of inertia of the wheel unit and of rotating components such as the hub and the brake disc are taken into account. The wheel unit is rotatably mounted on a balancing spindle (2) in a measuring apparatus to determine the mass and angular location of balancing weights (31). The vibrations are measured at a speed that corresponds to a typical travel speed of a vehicle. A loading mechanism including a roller shoe (20) applies a force to the tire tread surface through a spring damping (14, 15) to optimally simulate the conditions of a roadway. The roller shoe (20) has rollers (13) with sections of larger and smaller diameters so that neighboring rollers intermesh. The combined masses of the rollers, as reduced to the roller radius dw, corresponds to the rotational mass of the vehicle wheel as reduced to the tread radius (dR). It is also possible to disengage the contact force from the tread surface for dynamically balancing the wheel unit under load-free conditions. Thus, wheel-balancing steps under loaded and load free conditions can be done on one machine.

The invention provides a single column maritime wind power generation device with a circumferential stabilizing column, and belongs to the technical field of ocean energy resource utilization. The single column maritime wind power generation device with the circumferential stabilizing column comprises a wind power generation set, a single column base, the circumferential stabilizing column, a supporting structure, a berthing system and a fixed ballast system; the wind power generation set is fixed on the single column base; the circumferential stabilizing column is fixed at the periphery of the single column base; both ends of the supporting structure are connected with the circumferential stabilizing column and the single column base respectively; the middle part and the bottom of the single column base are connected with the berthing system and the fixed ballast system respectively; and the berthing system is connected with the seabed. By arranging the circumferential stabilizing column, a larger waterline plane inertial moment can be obtained in a smaller waterline plane area; meanwhile, due to the low gravity center of the single column base, the stability requirement is met and the high water power performance is gained; therefore, a stable, economic and flexible floating base is provided for the wind power generation set, so the single column maritime wind power generation device with the circumferential stabilizing column is particularly applicable to deep water regions of the open sea.

A device to convert the kinetic energy of wind into kinetic energy in the form of a rotating mass (FIG. 9) and to then selectively harvest and convert the kinetic energy of the rotating mass into electrical energy using both permanent magnet and electromagnet generators (FIG. 33). The conversion of the kinetic energy of wind into mechanical kinetic energy of the rotating mass is maximized through mechanical means by varying the physical moment of inertia of the rotating mass programatically based upon real time sensor data (FIG. 27A,27B). The conversion of the kinetic energy of the rotating mass into electrical energy is maximized through the programatical control of the field coil current of the electromagnet generator based upon real time sensor data (FIG. 62).

Laminates consisting of a high-damping core material sandwiched between two stiff, weldable skins. The laminate structures have increased resonant frequencies, improved damping characteristics, do not outgas, and may have a decreased inertial moment. The laminates are comprised of 100% metal constituents, and do not rely on epoxy or low-melting point solders. To make the laminate structures, a first alloyable metal is deposited on the surface of a dissimilar metal. The coated surface is then placed in contact with a second alloyable metal and allowed to interdiffuse at elevated temperatures. The metals are chosen such that diffusion creates an alloy with a melting point lower than either of the constituents. The processing temperature is set so that the alloy melts but leaves the base metals in solid form, causing a thin layer of liquid to form and wet both sides of the interface. External pressure is applied to the opposing base metals in such a way as to induce flow of the liquid layer and disrupt any oxide layers present on the surface of one or more of the base metals. Continued diffusion elevates the melting temperature of the liquid phase and causes it to solidify isothermally, creating a bond between the base metals. Highly polished surfaces on the base metals comprising the laminate structure are not required because the applied pressure causes the metal (in thin sheet form) to deform and create the intimate metal-metal contact necessary for diffusion. Moreover, the liquid flow helps to fill gaps between the parent materials and further mitigates the need for polished surfaces.

The invention aims to provide a computer simulation prediction method of the in-car vibration and noise of a car. The computer simulation prediction method comprises the following steps: A: calculating the reciprocating inertial force and the reciprocating inertial moment of a crank mechanism of an engine; B: according to the combustion pressure of the engine, calculating a moment generated by air pressure; C: processing engine load into frequency domain load according to orders; D: establishing an NVH (Noise Vibration and Harshness) finite element simulation model of a complete car, preliminarily judging the correctness of a model according to a modality, and loading the load onto an engine centroid in the model; E: calculating a response curve of the in-car vibration and noise, and comparing the response curve with a target value; F: according to the response curve of the in-car vibration and noise and the target value, finding a peak point which affects NVH performance to carry out contribution analysis; and G: according to a contribution analysis result, carrying out structure improvement to lower a noise or vibration peak. The computer simulation prediction method can predict and solve problems before manufacture cost is generated, a great quantity of cost is saved, and a development period is shortened.

Provided is a fan tower inherent frequency analyzing method based on conservation of mechanical energy. According to the method, a tower is regarded as a beam of a variable cross-section with one end fixed and the other end having concentrated mass and inertia moment, the fan tower is divided into a few sections, each section is signified by a constant-section beam, the rigidity of the beam is determined by adopting an equivalent rigidity method, a certain offset distance exists between a top mass center and the center of the beam, the mentioned parameters are regarded as the analyzing basis of the fan tower, and influences of relative parameters on the inherent frequency of the tower are determined by determining a first stage bending inherent frequency analyzing model and a first stage torsional inherent frequency analyzing model respectively.

The invention discloses a crankshaft balance structure, which includes balance weights respectively arranged on several groups of crank arms with equal weight, and also includes a first counterweight arranged at the front end of the crankshaft and a second counterweight arranged at the rear end of the crankshaft. The mass of the first balance weight and the second balance weight are equal, the direction of the center of mass is opposite, and the direction of the center of mass of one of them is the same as the direction of the center of mass of the balance weight on the adjacent crank arm. In this way, the balance of the inertial force is maintained through the characteristics of the first counterweight and the second counterweight being equal in weight and reversed, and at the same time, one of them is in the same direction as the center of mass of the counterweight on the adjacent crank arm, so that the rotational inertia moment can be achieved Full balance and semi-balance of reciprocating inertia moment meet the basic balance design goal of the crankshaft system. Compared with the existing technology, there is no need to change the structure of the front and rear parts of the engine (such as the flywheel), which improves the universality and versatility . The invention also discloses an engine and a vehicle, the beneficial effects of which are as described above.

A controller, for a supercharger-equipped internal combustion engine, that can improve the feedback response of compressor driving force is provided. In a controller, inertial force produced by an inertial moment of a supercharger is calculated, based on a real rotation speed of the supercharger; then, driving force feedback control is implemented in which a gate valve control value, which is a control value for a gate valve actuator, is changed so that an addition value obtained by adding the inertial force to the real compressor driving force approaches a target compressor driving force.

Laminates consisting of a high-damping core material sandwiched between two stiff, weldable skins. The laminate structures have increased resonant frequencies, improved damping characteristics, do not outgas, and may have a decreased inertial moment. The laminates are comprised of 100% metal constituents, and do not rely on epoxy or low-melting point solders. To make the laminate structures, a first alloyable metal is deposited on the surface of a dissimilar metal. The coated surface is then placed in contact with a second alloyable metal and allowed to interdiffuse at elevated temperatures. The metals are chosen such that diffusion creates an alloy with a melting point lower than either of the constituents. The processing temperature is set so that the alloy melts but leaves the base metals in solid form, causing a thin layer of liquid to form and wet both sides of the interface. External pressure is applied to the opposing base metals in such a way as to induce flow of the liquid layer and disrupt any oxide layers present on the surface of one or more of the base metals. Continued diffusion elevates the melting temperature of the liquid phase and causes it to solidify isothermally, creating a bond between the base metals. Highly polished surfaces on the base metals comprising the laminate structure are not required because the applied pressure causes the metal (in thin sheet form) to deform and create the intimate metal-metal contact necessary for diffusion. Moreover, the liquid flow helps to fill gaps between the parent materials and further mitigates the need for polished surfaces.

The invention relates to a calibration device for a test measuring beam of the wave load of a ship. The calibration device comprises two loading support stools arranged separately, a support is arranged on the loading support stools, the measuring beam is arranged in the support, the two ends of the measuring beam are sleeved by loading frames respectively, and counterweights are applied to the bottoms of the loading frames. The calibration device is compact and reasonable in structure and convenient to operate; via the special-purposed calibration device, vertical and horizontal inertial moments and torque can be obtained convenient and rapidly and are similar to those of a practical ship, and it can be ensured that the torsional center is similar to that of the practical ship; and the calibration device can calibration relation between strains of different measuring profiles of the test measuring bean and the wave loads born by a profile of a hull.

A golf ball with a controlled moment of inertia and controlled spin rate is disclosed. In one embodiment, the golf ball comprises a core, an intermediate layer and a cover, wherein the intermediate layer comprises a foamed highly neutralized polymer, has its specific gravity reduced to less than about 1.05, wherein the reduction in the specific gravity of the intermediate layer is less than about 25% to minimize the reduction in the coefficient of restitution of the golf ball to about 6% or less.

A method and apparatus for determining the mass moment of inertia of a given object is disclosed, The apparatus is a mass moment of inertia platform whereon objects to be measured can be placed. The platform uses flex pivots as torsional springs and the method ensures the flex pivots are procured and assembled in such a way so as to limit flex pivot misalignment systemic errors thereby resulting in a highly accurate and low-cost apparatus for measuring the mass moment of inertia.

A method for measuring the moment of inertia of a washing machine drum containing a load. The drum is set in a rotation by means of a permanent magnet synchronous electric motor taking it to a first angular spin velocity. The method includes identifying a synchronisation point in a periodic signal indicative of the torque provided by the synchronous electric motor at the first angular velocity. An acceleration transient of said drum with constant electromotive torque is provided by the synchronous electric motor. The method further includes interrupting the acceleration transient upon reaching a second angular velocity, acquiring the acceleration transient time duration, and processing an indirect measurement of the moment of inertia of the drum starting from a value of the torque yielded to the drum during the acceleration transient, from the transient time duration value, and from the variation of the angular velocity in the transient.

The invention discloses an inertia moment balancer, comprising loader, link rod and program carrier cam, where the loader is connected with one end of the link rod able to swing round middle pivot, the other end of the link rod contacts with the program carrier cam through roller, the program carrier cam or the loader is connected with an actuating mechanism producing inertia moment, and the actuating mechanism is connected with a drive mechanism. And it can perfectly eliminate inertia moment on machine spindle or actuating mechanism, reduce vibration and noises, and raise machine efficiency, and can eliminate the gap between actuating links and improve mechanism abrasion conditions.

The invention discloses a modeling method for a critical buckling load analysis model of a pod rod with a large slenderness ratio, and belongs to the technical field of structural mechanics modeling. The modeling method is divided into two steps to establish a critical buckling load analysis model of the pod rod: step S1, based on an Euler formula, constructing a critical buckling load analysis model of the pod rod with a large slenderness ratio, and aiming at section characteristics and layering characteristics of the pod rod, respectively obtaining a section inertia moment of the pod rod and an axial equivalent elastic modulus of the pod rod; then, establishing a pod rod finite element model through ABAQUS finite element software, verifying a pod rod critical buckling load analysis model by utilizing a characteristic value buckling method, and comparing differences of results obtained by respectively using the pod rod finite element model and the pod rod critical buckling load analysis model under different slenderness ratios, thereby determining the application range of the pod rod critical buckling load analysis model. The method has the advantages of small calculation amount, high calculation speed and the like.