1400results about How to "Wide measurement range" patented technology

In the mass spectrometer of the present invention, a flight space is provided before the mass analyzer, and the flight space includes a loop orbit on which ions fly repeatedly. While ions fly on the loop orbit repeatedly, ion selecting electrodes placed on the loop orbit selects object ions having a specific mass to charge ratio in such a manner that, for a limited time period when the object ions are flying through the ion selecting electrodes, an appropriate voltage is applied to the ion selecting electrodes to make them continue to fly on the loop orbit, but otherwise to make or let other ions deflect from the loop orbit. If ions having various mass to charge ratios are introduced in the loop orbit almost at the same time, the object ions having the same mass to charge ratio continue to fly on the loop orbit in a band, but ions having mass to charge ratios different from that are separated from the object ions while flying on the loop orbit repeatedly. Even if the difference in the mass to charge ratio is small, the separation becomes large when the number of turns of the flight becomes large. After such a separation is adequately achieved, the ion selecting electrodes can select the object ions with high selectivity, or at high mass resolution. By adding dissociating means, fragment ions originated only from the selected object ions can be analyzed, which enables the identification and structural analysis of the sample at high accuracy.

The invention discloses a multiple-degree-of-freedom suspension K&C (kinematics & compliance) property test platform, which mainly comprises a support system, a loading system, a measuring system, a movement platform system and a control system, wherein the support system is used for supporting a vehicle to be measured and the loading system, six electric cylinders in the loading system are used for driving the movement platform system to realize the six-degree-of-freedom movement, a left pier and a right pier in the loading system are slidingly connected above the movement platform system, a circular disc motor in the left pier and a circular disc motor in the right pier respectively drive a pier table to rotate, the measuring system is used for measuring the displacements and the applied forces of wheels of the vehicle to be measured, and the control system is used for collecting signals measured by the measuring system, and driving the loading system to load the vehicle to be measured. The multiple-degree-of-freedom suspension K&C property test platform has the advantages that the particular multiple-degree-of-freedom loading type is adopted, the lateral inclining angle and the longitudinal inclining angle of a real road surface can be completely simulated in the test process, the rotation inertia of the whole vehicle or component parts can be measured by little modification, the structure is simple, the measuring range is wide, and the application prospect is better.

Disclosed is a current sensor including magnetic sensors disposed on a conductor having at least two separated current-carrying areas with different current magnitudes and detecting a magnetic field generated according to currents flowing through the conductor and a controller controlling outputs of the magnetic sensors, wherein the magnetic sensors are disposed in at least two respective areas having different current magnitudes and the controller switches outputs of the magnetic sensors.

The invention belongs to a technique for analyzing elements of an alloy, and relates to a method for measuring the contents of aluminum, titanium, manganese, nickel, tungsten and iron in a cobalt-base alloy. The method adopts an inductively coupled plasma atomic emission spectrometer and is different according to different measured elements and different tungsten contents; when high-content tungsten is dissolved, the volume of test solution needs to be maintained between 20 and 40 mL, or the tungsten is easy to be separated out; by performing interference experiments and spectrogram analyses, the method finds the optimal analytical line, overcomes the interferences caused by a plurality of elements such as major elements of cobalt, chromium, tungsten and the like in the cobalt-base alloy, and improves the measuring accuracy; the sample dissolving speed is accelerated, and the sample dissolving time is shortened to 2 hours from about two or three days; and the method has wide measuring ranges including: 0.05 to 0.30 percent of the aluminum, 0.05 to 0.30 percent of the titanium, 0.05 to 1.00 percent of the manganese, 0.05 to 24.00 percent of the nickel, 0.05 to 20.00 percent of the tungsten, and 0.05 to 3.00 percent of the iron.

The invention discloses a device for measuring spatial motion with six degrees of freedom and a dynamic measuring method. A fixed platform (1) of the measuring device is provided with six Hooke hinges (2), and a moveable platform (10) is arranged above the fixed platform (1). The moveable platform (10) is provided with six ball hinges (9) which are respectively connected with the corresponding six Hooke hinges (2) through branched chains. A revolute joint (6) of each branched chain is provided with a spiral coder (5). The dynamic measuring method comprises the steps of establishing a coordinate system, measuring an angle-time curve of relative motion of upper and lower support rods of the revolute joint (6) by the spiral coders (5), so as to obtain the law of motion with the spatial six degrees of freedom of an object measured by a positive solution of the angle-time curve of the spiral coder (5) and the like. The device and the method not only measure the motion with the six degrees of freedom simultaneously, but also ensures the accuracy of measuring results, and have the characteristics of being good in flexible, strong in adaptation, wide in measuring range, high in accuracy and the like.

The invention relates to a constant temperature wiggly corrosive wear testing device and a test method thereof. A medium cavity of a high ball discharge test piece is arranged on the periphery of a lower clamp of the testing device, and the cavity is filled with test medium; the wall of the cavity is of a sandwich layer structure, the lower part of the sandwich layer is provided with a water inlet, the upper part is provided with a water outlet, the water inlet is connected with a constant temperature water bath kettle by a miniature water pump, and the water outlet is directly connected with the constant temperature water bath kettle, thereby forming a constant temperature water circulation system; an auxiliary electrode and a reference electrode are immersed in test medium of the medium cavity; and the auxiliary electrode, the reference electrode and the upper end face of an upper test piece are respectively connected with the corresponding port of a microprocessor controlled electrochemical workstation by conducting lines so as to form an electrochemical corrosion test system. The testing device and the method thereof can conveniently wear materials in the constant temperature test medium by wiggly corrosion, thereby much more factually and accurately testing the wiggly corrosive wear property of the materials in the specific corrosion medium; and the testing device and the method thereof provide much more accurate and reliable test basis for corresponding design, so that the properties and the service lives of equipment and apparatus can be increased.

The invention provides an overlay error measurement apparatus and a method. According to the present invention, a wide waveband light source is adopted, the emitted wide waveband measurement light beam turns through a beam splitting prism, then is subjected to normal incidence on an overlay measurement label through an object lens, and produces diffraction, the diffraction light is received by a first detector after passing through the object lens and the beam splitting prism so as to measure the diffraction light intensity, and the asymmetry of the high-order diffraction light spectral intensity is further calculated so as to obtain the overlay error; and the adopted wide waveband has the wide measurement range, the good process adaptability is provided, and the normally-incident light beam is adopted so as to provide large depth of focus and reduce the control difficulty of the focal plane position measurement, such that the feasibility during actual measurement is increased, and the high precision measurement result can be obtained.

The invention discloses a relative attitude measurement real-time dynamic filter method based on a dual-inertial measurement unit/differential global positioning system (IMU/DGPS) combination. The method comprises the following steps of: resolving through strapdown inertial navigation in real time by adopting a dual optical fiber strapdown inertial navigation system to obtain navigation information of a master inertial navigation system and a slave inertial navigation system; judging whether information of a differential global positioning system (DGPS) is updated, and generating two situations: when the information of the DGPS is updated, the master inertial navigation system and the slave inertial navigation system perform filter correction to construct a measurement equation of a combined navigation filter, when the information of the DGPS is not updated, the master inertial navigation system is used for performing the filter correction on the slave inertial navigation system to construct a measurement equation of the combined navigation filter; discretizing the combined filter measurement equations obtained according to the two situations, constructing a recurrence equation of a discrete kalman filter, and resolving to obtain a pitching angle, a transversely rolling angle and a heading angle of each of the master inertial navigation system and the slave inertial navigation system; and then resolving a relative attitude matrix to obtain main values of relative attitude angles of the master inertial navigation system and the slave inertial navigation system. According to the method, the stability of a navigation system is improved; the speed information, the position information and the attitude information of the navigation system during measurement can be output in real time; and the measurement range is large.

A detector (110) for determining a position of at least one object is proposed. The detector (110) comprises: —at least one angle dependent optical element (130) adapted to generate at least one light beam (131) having at least one beam profile depending on an angle of incidence of an incident light beam (116) propagating from the object (112) towards the detector (110) and illuminating the angle dependent optical element (130), wherein the angle dependent optical element (130) comprises at least one optical element selected from the group consisting of: at least one optical fiber, in particular at least one multifurcated optical fiber, in particular at least one bifurcated optical fiber; at least one diffractive optical element; at least one angle dependent reflective element, at least one diffractive grating element, in particular a blaze grating element; at least one aperture stop; at least one prism; at least one lens; at least one lens array, in particular at least one microlens array; at least one optical filter; at least one polarization filter; at least one bandpass filter; at least one liquid crystal filter, in particular a liquid crystal tunable filter; at least one short-pass filter; at least one long-pass filter; at least one notch filter; at least one interference filter; at least one transmission grating; at least one nonlinear optical element, in particular one birfringent optical element; —at least two optical sensors (113), wherein each optical sensor (113) has at least one light sensitive area (121), wherein each optical sensor (113) is designed to generate at least one sensor signal in response to an illumination of its respective light-sensitive area by the light beam (131) generated by the angle dependent optical element (130); at least one evaluation device (133) being configured for determining at least one longitudinal coordinate z of the object (112) by evaluating a combined signal Q from the sensor signals.

The invention relates to a device for measuring friction torque of a bearing under different axial load and revolution speed, comprising a fixing component, an axial loading component, a display component and a measurement component arranged on a stander base, wherein, the measurement component is arranged in a bearing support by an upper bearing and a lower bearing which are the same and fixed on a stander workbench, a bushing on the workbench supports the end face of the bearing outer ring of the lower bearing, so as not to contact the end face of the inner ring, and a loading head presses the end face of the bearing outer ring of the upper bearing. The two same bearings are used for measurement so that the axial load is not directly applied to a transmission shaft and a driving device to influence and damage the operation of the driving device. The voltage of a direct current motor is adjusted by a voltage regulator, so as to adjust the rotate speed of the motor. The axial load is adjusted by rotating a screw. The device can measure larger and different load and bearings with higher and different rotate speed, has wide measurement range which can be adjusted, can meet different requirements of users, and has the advantages of simple structure, easy fabrication, convenient, accurate and intuitive operation and use, wide universality and strong practicability.

The invention is a sensor device comprising a carrier element (24), at least one light emitting element (20) arranged on the carrier element (24), at least one light detecting element (22) arranged on the carrier element (24); a cover layer (12) reflecting at least one part of the light emitted by the light emitting element (20) to the at least one light detecting element (22); and at least one transparent filler element (16, 18) filling at least partly the space between the carrier element (24) and the cover layer (12) and being made of a flexible material.

The invention discloses a rock permeability testing system. The rock permeability testing system is characterized by comprising a confining pressure control device (1), a rock core pressure chamber (2), a porosity measurement system (3), an upstream gas storage cylinder (4), a downstream gas storage cylinder (5), an upstream air pressure recording meter (6), a downstream air pressure recording meter (7), an upstream-downstream air pressure recording meter (8), a high-purity argon bottle (9) and a high-precision air pressure recording instrument (10). The invention further discloses a method for testing the permeability by utilizing the rock permeability testing system. The rock permeability testing system has the advantages that the operation is simple, the to-be-measured physical quantity is little, and the measurement range is wide; the system can be used for measuring normal rocks with the permeability higher than 10-15 m<2>, low-permeability rocks and even ultralow-permeability rocks, and the measuring precision reaches 10-24 m<2>.

The invention belongs to the field of automatic measurement and specifically discloses a complex part pose estimation system and method based on three-dimensional measuring point cloud. The method forestimating a complex part pose comprises a step of calibrating a conversion matrix between a six-degree-of-freedom industrial robot end flange and a grating area array scanner measurement coordinatesystem, a step of driving a grating area array scanner to move through the six-degree-of-freedom industrial robot to scan a measured workpiece and obtaining three-dimensional point cloud data of the measured workpiece, a step of converting the three-dimensional point cloud data of the measured workpiece to a robot base coordinate system to obtain converted three-dimensional point cloud data, and astep of matching the converted three-dimensional point cloud data with a three-dimensional design model of the measured workpiece to obtain the pose of the measured workpiece relative to the robot soas to complete the estimation of the pose of a complex part. The invention has a wide measurement range, the accurate measurement of multiple regions and complete topography of the measured workpiececan be achieved, and the pose of the measured workpiece can be accurately obtained.

A construction laser with at least one laser beam (4) defining a plane (3) has a laser unit (6) which is tiltable with respect to a housing (5) around at least one swiveling axis (9a) and includes at least one leveling sensor (10a) which is sensitive to the swiveling axis (9a) for a highly precise orientation to the gravitational field (G), and at least one tilt sensor (11a) which is sensitive to the swiveling axis (9a) for direct measurement of an inclination angle [alpha] relative to the gravitational field (G).

The invention relates to a device for testing nozzle characteristics. The device comprises a testing device box, a nozzle, a testing platform system, a gas channel system, a water channel system and a laser imaging system. The device is used for testing aerial fog characteristics such as the drop grain diameters, the drop speed, the flow density at the different positions and drop grain diameter distribution of the different nozzles at different spraying heights at different air pressures and different water pressures. The device is high in testing accuracy, wide in adjusting scope, stable in operation and capable of testing the aerial fog characteristics of single-phase liquid flow and gas liquid two-phase flow.

The invention discloses a self-adaptive control method for diagonal gait of a four-footed robot, which is used for self-adaptively controlling the walking of the four-footed robot in the nonstructural terrain with the diagonal gait. The self-adaptive control method bases on a fuzzy reasoning learning method and a foot trajectory real-time correction method and takes the diagonal gait as the motion mode so as to comprehensively control a robot body to adapt for the nonstructural environment. The gait planning is carried out on the environmental information collected by the sensor through the fuzzy reasoning learning method; the stability judgment is carried out on the gait planning information; if the planned four-footed robot has stable diagonal gait, the joint corner information is sent to a control system; if not, the supporting time of the diagonal feet is corrected by the foot trajectory real-time correction method so that the four-footed robot has better stability when walking under the changed gait in the nonstructural terrain. The self-adaptive control method is used for correcting foot trajectory planning and walking stability under changed gait when the four-footed robot walks diagonally in a dynamic way, thus realizing the self-perception, self-correction and self-adjustment of the four-footed robot.