489 results about "Maximum displacement" patented technology

A new method for controlling movement of a digging dipper includes providing an earthmoving machine with two drive systems for moving the dipper along two respective paths. Also provided is a control apparatus having a reference axis and a knob mounted for movement between a first, repose position and a maximum position spaced from the repose position by a maximum displacement dimension. The knob is displaced along a control axis to a second position which is spaced from the repose position by an actual displacement dimension less than the maximum displacement dimension. The drive systems are energized and the dipper is powered along a digging axis generally parallel to the control axis. A new apparatus for controlling movement of the dipper has a single control knob having a repose position and also has first and second motion transducers mechanically coupled to the knob. In a Cartesian coordinate system, the repose position is at the origin, the first transducer provides a first output signal when the knob is displaced along the "X" axis and the second transducer provides a second output signal when the knob is deflected from the repose position along the "Z" axis.

The present invention advantageously provides methods for manually and / or remotely controlling a motorized roller shade that includes a shade attached to a shade tube, a DC gear motor disposed within the shade tube and a microcontroller. One method includes detecting a manual movement of the shade using a sensor, determining a displacement associated with the manual movement, and, if the displacement is less than a maximum displacement, moving the shade to a different position by energizing the DC gear motor to rotate the shade tube. Another method includes receiving a command from a remote control, and moving the shade to a position associated with the command by energizing the DC gear motor to rotate the shade tube.

The present invention advantageously provides methods for manually and / or remotely controlling a motorized roller shade that includes a shade attached to a shade tube, a DC gear motor disposed within the shade tube and a microcontroller. One method includes detecting a manual movement of the shade using a sensor, determining a displacement associated with the manual movement, and, if the displacement is less than a maximum displacement, moving the shade to a different position by energizing the DC gear motor to rotate the shade tube. Another method includes receiving a command from a remote control, and moving the shade to a position associated with the command by energizing the DC gear motor to rotate the shade tube.

An integrated circuit lithography technique called spectral engineering by Applicants, for bandwidth control of an electric discharge laser. In a preferred process, a computer model is used to model lithographic parameters to determine a desired laser spectrum needed to produce a desired lithographic result. A fast responding tuning mechanism is then used to adjust center wavelength of laser pulses in a burst of pulses to achieve an integrated spectrum for the burst of pulses approximating the desired laser spectrum. The laser beam bandwidth is controlled to produce an effective beam spectrum having at least two spectral peaks in order to produce improved pattern resolution in photo resist film. Line narrowing equipment is provided having at least one piezoelectric drive and a fast bandwidth detection control system having a time response of less than about 2.0 millisecond. In a preferred embodiment, a wavelength tuning mirror is dithered at dither rates of more than 500 dithers per second in phase with the repetition rate of the laser. In one case, the piezoelectric drive was driven with a square wave signal and in a second case it was driven with a sine wave signal. In another embodiment, the maximum displacement was matched on a one-to-one basis with the laser pulses in order to produce a desired average spectrum with two peaks for a series of laser pulses. Other preferred embodiments utilize three separate wavelength tuning positions producing a spectrum with three separate peaks.

A method of randomizing elements into a random pattern on a surface so the random pattern of elements substantially entirely consumes a region of the surface includes choosing an overlap distance and creating an initial pattern of elements that substantially entirely consumes a region of the surface, wherein neighboring elements overlap by the overlap distance. The method also includes choosing a maximum displacement distance, and displacing the elements by random displacement distances from their positions in the initial pattern, the random displacement distances being less than the maximum displacement distance. Moreover, a signed difference in displacement between two neighboring elements is not greater than the overlap distance. An apparatus including the elements is also disclosed.

A bicycle rear suspension system has a virtual pivot point that is close to a junction between a chain and a front driving sprocket when a piston rod travels relative to a cylinder body by ¼ to ⅓ of a maximum displacement value, and that moves rearwardly when a rear wheel moves upwardly away from the ground. A line interconnecting an instant center of a rear triangular frame and a contacting point between a rear wheel and the ground forms an angle of about 45° with respect to a horizontal line.

The invention discloses an expression cloning method and device capable of realizing real-time interaction with a virtual character and belongs to the fields such as computer graphics and virtual reality. The method includes the following steps that: 1, modeling and skeleton binding are performed on the virtual character; 2, the basic expression base of the virtual character is established; 3, expression input training is carried out: the maximum displacement of facial feature points under each basic expression is recorded; 4, expression tracking is carried out: the facial expression change of a real person is recorded through motion capture equipment, and the weights of the basic expressions are obtained through calculation; 5, expression mapping is carried out: the obtained weights of the basic expressions are transferred to the virtual character in real time, and rotation interpolation is performed on corresponding skeletons; and the real-time rendering output of the expression of the virtual character is carried out. With the method adopted, the expression of the virtual character can be synthesized rapidly, stably and vividly, so that the virtual character can perform expression interaction with the real person stably in real time.

An image formation apparatus comprising at least a moving body to be charged, a charging device for charging the body to be charged using discharge caused by applying a voltage to a charging member provided in contact with or proximity to the body to be charged, a latent image formation device for forming a latent image on a surface of the body to be charged which is charged by the charging device, and a development device for depositing toner on an image portion of the latent image formed by the latent image formation device, wherein an elastic displacement ratio τe for the surface of the body to be charged is equal to or greater than 40% which is defined by the following formula, elastic displacement ratio τe(%)=[(maximum displacement)−(plastic displacement)] / (maximum displacement)×100, and the image formation apparatus further comprises a protective material feeding device for depositing a protective material on at least a discharge area of the surface of the body to be charged.

An image formation apparatus including at least a moving body to be charged, a charging device for charging the body to be charged using discharge caused by applying a voltage to a charging member provided in contact with or proximity to the body to be charged, a latent image formation device for forming a latent image on a surface of the body to be charged which is charged by the charging device, and a development device for depositing toner on an image portion of the latent image formed by the latent image formation device, wherein an elastic displacement ratio τe for the surface of the body to be charged is equal to or greater than 40% which is defined by the following formula,elastic displacement ratio τe (%)=[(maximum displacement)-(plastic displacement)] / (maximum displacement)×100,and the image formation apparatus further includes a protective material feeding device for depositing a protective material on at least a discharge area of the surface of the body to be charged.

An agricultural mixer includes a hydraulic drive system. The mixer includes an automatic jam-resolving feature, whereby if an auger becomes jammed, the drive system will cause the auger to rotate in a reverse direction for a period of time to resolve the jam. The hydraulic drive system will maintain a speed of rotation of the auger at a relatively constant rate during mixing while choosing an efficient displacement setting for the hydraulic motor. The auger is maintained at a constant speed during a discharge mode by maintaining the motor in a maximum displacement setting. A clean-out mode is provided wherein the auger is rotated at a maximum speed to aid in cleaning out the last remaining feed mixture in the mixer.

The surrounding structure of the loudspeaker forms an annular structure, including attaching parts and curved part. The cross section of the curved part is in a hollow and approximately elliptical form. The height along the major axis of the ellipse is made parallel to the center axis of the vibrating diaphragm of the loudspeaker while the width along the major axis of the ellipse is set in the direction orthogonal to the center axis of the vibrating diaphragm. In the elliptical surrounding structure having such a structure, the width in the cross section of the surrounding structure of the loudspeaker can be made narrow in comparison with a semi-circular surround, whereby the linearity of the amplitude and the maximum displacement are increased.

A vane pump (20) is provided which has an output pressure hat can be selected from a continuous range of pressures, independent of the operating speed of the pump. The pump has first (68) and second (72) control chambers which create opposed forces on the pump control ring (40) to selectively move the pump control ring (40) between maximum displacement and minimum displacement positions. In one embodiment, the control chamber (68) which urges the ump control ring to the minimum displacement position is continually supplied with pressurized working fluid during operation of the ump while the control chamber (72) which urges the pump control ring to the maximum displacement position can selectively be supplied with pressurized working fluid, isolated, or can be relieved of pressurized working fluid to alter the displacement of the pump.

The invention provides a device and method for measuring a micro-pore size based on a fiber Bragg grating and belongs to the technical fields of precision instrument manufacture and precision test metering. The device consists of an aiming and signaling device for generating aiming signals, a length measuring device for measuring the movement distance of a micro-pore to be measured within a time interval of measuring measurement starting and stopping signals which are sent by the aiming and signaling device, and a computer for controlling a measurement process of the entire measuring device. The method comprises the following steps of: continuously moving a working table along a direction vertical to a length measurement direction, and moving the working table along a measurement line to obtain a maximum displacement, relative to the micro-pore to be measured, of a probe, so as to obtain the diameter of the micro-pore to be measured. According to the device and method disclosed by the invention, the adaptability of the aiming and signaling device to the environment is greatly improved. The device disclosed by the invention has the characteristics of simple structure, good real-time capability and easiness for actual application, and has obvious advantage of carrying out rapid and ultra-precise measurement and aiming on the size of the micro-pore.

The invention discloses a method for analyzing hot pneumostatic elasticity of a hypersonic aerocraft, which comprises the following steps: (1) according to the original outline of the hypersonic aerocraft, building a structural and pneumatic analytical model of the hypersonic aerocraft; (2) calculating the aerodynamic force and aerodynamic heat of the hypersonic aerocraft by utilizing the engineering approach; (3) according to the heat flux on the surface of the hypersonic aerocraft, calculating the surface temperature and the temperature field of the structure of the hypersonic aerocraft through heat conduction analysis; (4) loading the aerodynamic force load and the temperature field calculated in the step (3) into the structural analytical model built in the step (1), and calculating the elastic deformation of the hypersonic aerocraft; (5) updating the outline node coordinates in the structural and pneumatic analytical model of the hypersonic aerocraft by utilizing the calculated elastic deformation of the hypersonic aerocraft, determining the maximum displacement point of the deformation, judging whether the deformation rate of the maximum displacement point is less than the preset threshold value or not, if yes, regarding the aerodynamic force, aerodynamic heat and elastic deformation of the hypersonic aerocraft currently calculated as the final analysis result, otherwise, moving to the step (2) for loop execution.

A construction vehicle includes an engine, a hydraulic pump driven by the engine, a travel hydraulic motor driven by pressure oil discharged from the hydraulic pump, travel wheels driven by the drive force of the travel hydraulic motor, and a controller. The controller is configured to control an engine speed, displacement of the hydraulic pump, and displacement of the travel hydraulic motor in order to control a vehicle speed and the traction force. The controller is further configured to increase a maximum displacement of the travel hydraulic motor as the vehicle speed decreases within a low speed range in which the vehicle speed is equal to or less than a predetermined threshold.

A method of braking a hydrostatic drive machine includes steps of reducing a displacement of a pump of a hydrostatic drive system to a non-zero displacement, and increasing a displacement of a motor of the hydrostatic drive system to a displacement that is less than a maximum displacement. The method also includes a step of accelerating an engine of the hydrostatic drive system toward a desired engine speed range.

The invention discloses a vibration damping and energy absorption method for an automobile sub-frame, which comprises the steps of (1) performing finite-element analysis to an sub-frame to obtain the quality, the first-order bending mode and the corresponding maximum displacement site of the sub-frame; (2) arranging a mass block with an elastic damping system to damp vibration and absorb energy; and (3) performing modal analysis and experimental verification on the improved sub-frame to correct the elastic damping system and the mass block parameters. The inventive method does not change the current structure of the sub-frame, and arranges the mass block with the elastic damping system in a specific position on the sub-frame to reduce the vibration amplitude by utilizing the principle of resonance energy absorption, so as to reduce the transmission of vibration toward automobile body. The method can also adjust the frequency of vibration damping and energy absorption devices by adjusting the mass of the mass block and the vertical rigidity of the elastic damping system. The inventive method has the advantages of simple structure and not remarkably increased weight and cost, and can maximally damp transmission of the vibration toward the automobile body.

To provide a scroll compressor capable of reducing a noise occurring in a pin-and-ring type self rotation preventing mechanism and improving compression performance. In a scroll compressor comprising: a fixed scroll member and a revolving scroll member; a driven crank mechanism for driving the revolving scroll member to revolutionary turn; and a pin-and-ring type self rotation preventing mechanism provided in plural places for preventing self rotation of a revolving scroll member, at least one of the self rotation preventing pin, the self rotation preventing ring and the self rotation preventing ring hole, which form the pin-and-ring type self rotation preventing mechanism, is provided with an orbit correction part for reducing a maximum displacement R in a direction of self rotation of the revolving scroll member to smooth a change of an orbit of the revolving scroll member in changing a pin and a ring in a section of prevention of self rotation by means of a corresponding pin and ring part.

The invention relates to a spin forming core mould with a transverse inner rib member. The spin forming core mould comprises a top end (1), a clamping plate (2), a rib die (3) and a chuck (4); the longitudinal sections of the top end (1), the clamping plate (2) and the rib die (3) are taper; the annular clamping plate (2) is divided into one active clamping plate (5) and two passive clamping plates (6) in the longitudinal direction by adopting a longitudinal distinction mode, the shape of the active clamping plates is trapezoid; the champing plate of which the active clamping plates is cut is divided into two parts along a center line of the champing plate, namely the two symmetrical passive champing plates (6); the periphery of the lower surface of the champing plate (2) is provided with a chamfer angle based on the shape of the inner rib, and the length of the horizontal projection of the chamfer angle M is less than the maximum displacement L of the active champing plate (6) in the X direction; and the outside diameter difference between the top and the bottom of the champing plate is more than zero. The transverse and longitudinal combined distinction proposal adopted by the invention can effectively overcome the defect that the forming of a large scale thin wall complicated member with a transverse inner rib is more difficult than the demoulding, and satisfy the requirements of rapidly and efficiently forming of the type of the members; and the spin forming core mould has the characteristics of simple structure and convenient use.

The invention discloses an electromechanical integrated optimization method for sectional dimensions of ribs of a metal truss type antenna housing. The technical scheme of the invention is as follows: the method comprises the steps: calculating a far field generated by a skin-penetraed aperture field; calculating a scattered field of the ribs; adding the scattered field of the ribs to the far field generated by the skin-penetrated aperture field, so as to obtain a far field of an antenna enclosed by the housing; calculating the maximum displacement of an antenna housing node under the action of a load; calculating the weight of an antenna housing body; classifying the ribs according to heights of midpoints of the ribs, and establishing an optimization model by taking dimensions of middle ribs of a truss as design variables and taking the electrical properties, maximum node displacement and weight of an antenna system enclosed by the housing as optimization targets; solving the optimization model by using a particle swarm optimization algorithm, thereby obtaining an optimal comprehensive design scheme for various indexes. The method can be used for guiding the design of the sectional dimensions of the ribs of the metal truss type antenna housing and carrying out analysis and evaluation on the electromechanical comprehensive performance of the metal truss type antenna housing.

The invention discloses a method determining a controllable vibration source best low-frequency scanning signal. Equal-frequency scanning signals are adopted, vibration source output force is increased gradually to carry out excitation, the least square method is used for carrying out matching on measured vibration source low-frequency sampling point actual output maximum output force, a controllable vibration source low-frequency output curve is determined according to a fitting heavy punch maximum displacement curve and the focus of a system flow curve, a low-frequency section scanning time length is calculated, the frequency, amplitude and phase of each sampling point of the low-frequency section are calculated, a scanning signal is generated to carry out practical testing on the vibration source, and the best low-frequency scanning signal is obtained until a vibration result does not exceed heavy hammer displacement limitation or the flow limitation. According to the method determining the controllable vibration source best low-frequency scanning signal, the low-frequency components of the controllable vibration source scanning signal are significantly enhanced, the method determining the controllable vibration source best low-frequency scanning signal is suitable for an existing controllable vibration source, can exert the maximum potential of the low frequency of the controllable vibration source, the low frequency signal is small in signal distortion, the output frequency spectrum of the controllable vibration source is smooth and white-noised, and the controllable vibration source can be protected well.

The invention provides a fluid viscous damper with a working switch, and belongs to the technical field of structural energy consumption to absorb shock (vibration). The fluid viscous damper of the working switch is characterized in that a fixed connecting rod is arranged between a piston rod end connecting rod and a fixed end on one side of the typical fluid viscous damper, an inner sleeve rod and a cylindrical outer sleeve are relatively sliding, and the fixed connecting rod prevents a damper piston and an outer wall of a hydraulic cylinder from relatively moving; when the displacement of the inner sleeve rod reaches a stated maximum displacement value, a brake switch on a pop-up stopper in the outer sleeve is contacted, and the pop-up stopper pops up and clamps a brake head of an inner sleeve rod end together with a fixed stopper, so that the inner sleeve rod is locked and does not slide relative to the outer sleeve, the fixed connecting rod is stressed and destroyed by an impact force, and the damper begins to consume energy for shock absorption. The fluid viscous damper with the working switch has the effects and advantages that the fluid viscous damper is expected to be applied to structures such as a suspension bridge provided with a central buckle or a cable-stayed bridge provided with a floating system, the service life of the damper can be prolonged, and the damper is enabled to play a role of correspondingly consuming energy for shock absorption when a large shock occurs.

The present invention generally relates to improved non-destructive thickness measurement systems and methods. Embodiments of the present invention utilize quarter wave resonant frequency to measure the thickness of high-temperature pipe walls. In one embodiment, an improved non-destructive thickness measurement system is provided that utilizes Gaussian white noise to produce maximum mechanical resonance in the pipe wall and laser vibrometers to detect the pipe wall's maximum displacement.

The invention discloses a design method of an automatic orienting device for big ends of eggs. The automatic orienting device for the big ends of eggs comprises a rowing region, an overturning region and a combing region in sequential arrangement. Time t1 required for an egg to complete the maximum displacement A-L on support rollers along an axial direction within the rowing section is computed via a formula, length of the rowing section is obtained according to the time t1 and the formula; length W of a bending section of each limit guide rod in the overturning region is computed via the formula; length D' of the overturning region, time t2 required for an egg to complete the maximum displacement A-L on support rollers along an axial direction within the combing region is computed, and length of the combing region is computed; and total length of a working area is obtained by summing the B, the D', the P, the length of a feeding region and the length of a discharging region. By the aid of the design method of the automatic orienting device for the big heads of eggs, structural parameters of above regions and bending sections of the limit guide rods are optimized, structural size of a whole machine is further optimized, and transmission efficiency between the eggs and the support rollers is improved.

The invention discloses a multi-stage, multi-gap and multi-section fracturing method for a horizontal well. The method comprises the steps of 1) determining the quantity of fracturing sections and grading number after the casing cementing and completion, and determining setting positions of sectional packers and a grading perforation position; 2) performing directional perforation process to perforate 7 to 10 holes at each grade under a slurry condition, wherein the holes are 8mm in diameter; 3) separating the internal space of a wellbore casing by a segmentation tool after perforation, so as to achieve horizontal well segmentation; 4) determining the maximum discharge, construction pressure and other sand fracturing parameters during fracturing construction; 5) feeding ball to set all packers, and sequentially fracturing a plurality of horizontal sections according to the matching relationship between a starting ball, a sand injection sliding sleeve and a ball receiving seat, so as to achieve multi-stage multi-gap fracturing of the horizontal well. With the adoption of the method, the fracturing reconstruction which increases artificial gaps is done on the premise that the packers are not increased; therefore, the construction effect can be ensured, and moreover, the working degree in the whole well section can be obviously raised, and the cost of fracturing construction is low.

A variable displacement vane pump is provided which is able to achieve a substantially constant output pressure in its regulated operation region. The longitudinal axis of the control spring of the pump is inclined, with respect to a plane through the rotational axis of the pivot and the contact point between the control ring and the control spring, and this inclination results in a reduction in the length of the moment arm between the spring and the pivot when the control ring of the pump is moved from the maximum displacement position to the minimum displacement position. By reducing the length of this moment arm, the increase in the moment produced by compression of the control spring is offset, resulting in a substantially constant output pressure in the regulated operating range of the pump. The inclination further results in a reduction in the amount by which the control spring is compressed when the control ring moves from the first position to the second position. This reduction in the change in length of the control spring results in a corresponding reduction in the amount by which the spring force exerted by the control spring increases as the control ring moves from the first position to the second position.