486 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.

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.

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 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 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 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.

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.