41 results about "Coriolis force" patented technology

The invention discloses a method for judging an RTK abnormal value in an automatic driving integrated navigation system, and relates to the technical field of automatic driving high-precision integrated navigation, and the method comprises the steps: collecting RTK observation data, inertial measurement unit data, a wheel speed pulse signal and LiDAR point cloud data, carrying out timestamp alignment and coordinate system unification, and generating a fusion data value; calculating a carrier-to-noise ratio weight signal quality index of the satellite through the fused data value, and generating a signal quality report; and combining the signal quality report, the current satellite geometric accuracy factor and the vehicle motion acceleration, calculating a residual threshold, constructing a coriolis force compensated double-integral prediction model by using inertial measurement unit data, and predicting the position of the vehicle at the current moment. According to the method, multi-dimensional features such as satellite signal quality, vehicle motion state and residual analysis are fused through multi-source decision, and the anomaly detection capability of complex scenes such as urban canyons is effectively improved.

The invention discloses a numerical weather forecast deviation correction method and system based on physical conservation optimization. The method comprises the following steps: acquiring a specified prognostic variable in a numerical weather forecast system; inputting the prognostic variable into a prediction deviation correction model pre-trained by a loss function based on physical conservation optimization so as to obtain a deviation correction prediction result of numerical weather prediction; in the loss function of the physical conservation optimization, the physical conservation optimization refers to adding part or all of Coriolis force and barometric gradient force loss, static equation constraint derivation loss and vertical integral loss to the loss function of the value weather forecast deviation correction model. The invention aims to solve the problem of systematic deviation correction in mid-term numerical forecasting, better capture the complex dependency relationship in meteorological data, quantify the uncertainty of numerical weather forecasting and improve the forecasting precision.

The invention discloses a critical parameter prediction method for a vertical cantilever fluid conveying pipe comprising a water injection pump and a Y-shaped nozzle, and relates to the field of fluid conveying pipe critical parameter calculation. The prediction method is based on an Euler-Bernoulli beam model and a momentum theorem, bending force, centrifugal force, Coriolis force, inertia force, gravity and additional force generated by an elbow are comprehensively considered, and an oscillatory differential equation of the fluid conveying pipe is established. The method comprises the following steps: performing dimensionless processing on an oscillatory differential equation by introducing dimensionless parameters, deducing a characteristic equation, a characteristic function and a characteristic value under a cantilever boundary condition, converting a partial differential equation into an ordinary differential equation set, and performing matrix solution; and finally, accurate prediction values of the critical flow velocity and the critical frequency can be obtained. The method can effectively reflect the influence rule of the nozzle and the concentrated mass on the vibration characteristics of the fluid conveying pipe, and realizes the accurate prediction of the critical parameters of the vertical cantilever containing the concentrated mass belt Y-shaped nozzle fluid conveying pipe.

The invention relates to the technical field of Coriolis inertia force experiment equipment, and discloses an angle adjusting bracket for a Coriolis inertia force experiment, which comprises a bottom plate, a rotation angle driving mechanism and a linear module, the rotation angle driving mechanism is installed on the bottom plate, the module fixing structure is installed at the output end of the rotation angle driving mechanism, and the rotation angle driving mechanism is used for driving the module fixing structure to rotate; the linear module is mounted at the top of the module fixing structure, a test module is slidably connected to the linear module, and the linear module is used for driving the test module to move; the driving mechanism, the linear module and the test module are electrically connected with a control system. According to the invention, automatic adjustment can be realized, the displacement parameter of the test module at a specific angle can be accurately controlled, the Coriolis force of an object moving in different directions can be tested, and the experiment efficiency can be improved.

The application discloses a rotating wing type variable cross-section crack blade fault characterization and dynamics analysis method, belongs to the field of rotating wing type variable cross-section crack blade fault characterization and dynamics analysis, and comprises the following steps: according to the finite element theory and the plate shell theory, based on centrifugal rigidification, rotation softening and the coriolis force effect, a motion differential equation of the wing type variable cross-section blade is established; according to the motion differential equation of the wing type variable cross-section blade, based on the crack existing in the blade, the breathing effect between crack surfaces is equivalent by adopting a spring unit, a rotating wing type variable cross-section crack blade dynamics model containing the breathing effect is established, vibration energy theory is adopted to convert the displacement response into energy response, based on the rotating crack blade crack diagnosis index with the breathing effect, the crack characteristics of the blade are obtained, and the application is more effective and accurate in analyzing the rotating crack blade fault, and can provide theoretical guidance for detection and diagnosis of the rotating crack blade.

The invention discloses a robot self-adaptive trajectory control method based on a radial basis function neural network, belongs to the field of intelligent equipment control, remarkably reduces huge calculation burden in a traditional optimization strategy, avoids time and operation space cost caused by the huge calculation burden, does not need to depend on a model training learning process before control, and improves the control precision. Therefore, the trajectory tracking control precision of the continuum robot is effectively improved. The method mainly comprises the following steps: constructing a continuum robot nominal dynamic model through a Lagrange algorithm; designing a radial basis function neural network function for approximation estimation of Coriolis force, gravity, elastic force and external interference in subsequent controller design; subtracting the actual output from the ideal output of the system to form a tracking error z1, and constructing a first error variable; designing a Lyapunov candidate function for the integral of the first error variable, and designing a first virtual controller; the method is mainly used for track control of the continuum robot.

This invention relates to a method for analyzing the turning stability of a truncated cone thin-walled structure, belonging to the field of machining technology. First, based on shell theory, a vibration differential equation considering the rotational effects of centrifugal force, Coriolis force, and initial ring tension is established. The cantilever-free boundary condition expression is substituted into the equation, and the natural frequencies and modal parameters of the rotating truncated cone thin-walled structure are obtained by solving the equation using a generalized differential quadrature method. Then, considering the vibration of the tool along the generatrix of the shell and the vibration of the workpiece perpendicular to the generatrix, a flexible workpiece-tool coupled turning dynamics model is established. This model simultaneously considers the influence of shell rotation and multi-mode vibration, achieving a more accurate prediction of the turning process of the truncated cone thin-walled structure.

The utility model discloses a Coriolis force effect demonstration device based on double visual angles, and belongs to the technical field of Coriolis force effect demonstration devices. Comprising a small ball for simulating a mass point; a base; a horizontally arranged rotating assembly is arranged on the base plate; a supporting plate is horizontally arranged on the rotating assembly; a simulation disc is horizontally arranged on the supporting plate, and the top surface of the simulation disc is provided with a paraboloid. The driving assembly drives the rotating assembly to rotate, the supporting plate is driven to rotate, and then the simulation disc is driven to rotate. Wherein the top surface of the simulation disc is provided with a paraboloid, so that simulation of an earth rotation environment is realized. When the Coriolis force effect demonstration device is used, the driving assembly drives the simulation disc to rotate, then the small balls are placed in from the edge of the simulation disc at a certain speed, the small balls are affected by Coriolis force, the motion trails of the small balls are changed, and therefore the purpose of Coriolis force effect demonstration is achieved. And the image or video data of the motion trail of the small ball on the simulation disc is acquired by the camera assembly, so that subsequent comparative analysis work is facilitated.

The invention provides a modular rotating water tank typhoon simulation system based on a similarity law, and the system comprises a basic rotating platform, a driving assembly of which drives a horizontal platform surface provided with a transparent water tank to rotate, so as to provide a Coriolis force background field; an inclined bottom plate with an adjustable inclination angle and a three-dimensional terrain model fixed on the inclined bottom plate are used for simulating a terrain effect; the vortex generation module is mounted through a detachable interface, comprises a stirring type vortex generation module, a suction type vortex generation module and a double-vortex generation module, and is used for generating controllable cyclone type vortexes; and the data acquisition control module is used for system control and experimental data recording. A controllable Coriolis force background field is provided through the basic rotating platform, and a reliable hardware basis is provided for application of the dynamic similarity law through physical cooperation of the terrain simulation module and the replaceable vortex generation module, so that a parameter design process based on the theoretical similarity law can be accurately executed in an entity system, and the design efficiency is improved. Therefore, the experiment can consider both simulation precision and operation efficiency.

The invention discloses a multi-suspended-span elastic bearing fluid conveying pipe stability parameter prediction method, and relates to the technical field of fluid conveying pipe vibration characteristic analysis. A multi-suspended-span pipeline is divided into a plurality of independent pipe sections at the supporting position, vibration control equations for describing all the suspended-span pipelines are established respectively, and the vibration control equations only consider the coupling effect of bending force, centrifugal force, gravity, Coriolis force and inertia force of the pipeline and do not contain any middle supporting constraint term; the intermediate support constraint is completely written into the cross-coupling boundary condition, so that the defects that the traditional Dirac function method is fuzzy in significance and the numerical calculation is difficult to converge are avoided; carrying out dimensionless processing on an oscillatory differential equation by introducing a dimensionless parameter, deducing to obtain a characteristic equation, a characteristic function and a characteristic value under the complex boundary condition by combining the end elastic boundary and the cross coupling constraint, converting a partial differential equation into an ordinary differential equation set, and carrying out matrix solution, so as to obtain an oscillatory differential equation set; and finally, an accurate prediction value of the inherent frequency can be obtained.

According to the method, the geophysical effect and the continuous casting process are correlated for the first time, Coriolis force is actively counteracted through the rifling structure, and the traditional thought that only a local flow field is optimized is broken through. A zero-energy-consumption solution is provided, flow field correction is achieved through a pure mechanical structure, the continuous spiral rifling structure is arranged on the inner wall of the nozzle body, the earth rotation Coriolis force effect of a hemisphere where a pouring position is located is counteracted, and the crystallizer flow field is stabilized.

The application discloses an optical-mechanical gyroscope based on parametric resonance and a working method thereof, and belongs to the technical field of optical inertial sensing. The light source module is used for emitting a coherent light field; the mechanical oscillator is used for generating periodic vibration or displacement on a moving platform; the optical resonant cavity is used for converting the displacement of the mechanical oscillator into an optical signal; the stiffness modulation module is used for applying periodic modulation to the equivalent stiffness of the mechanical oscillator; and the signal detection module is used for detecting the optical signal output by the optical resonant cavity and acquiring a detection signal related to angular velocity. The application applies periodic modulation to the equivalent stiffness of the mechanical oscillator, introduces parametric resonance effect, amplifies the mechanical vibration signal induced by the Coriolis force, and thus improves the signal-to-noise ratio and angular velocity resolution of the optical-mechanical gyroscope.

The invention belongs to the technical field of analytical chemistry and physical instruments, and discloses a mass spectrometry system and a mass spectrometry method.The system comprises an ion optical subsystem used for applying target acceleration voltage to ion pulses generated after ionization of a target analysis sample injected through an ion inlet; the rotating subsystem is used for providing a target angular velocity corresponding to a mass spectrometry mode for the ion pulse with the target radial velocity, so that the accelerated ion pulse freely flies in the rotating subsystem, and the accelerated ion pulse is impacted to the position sensitive detector after generating a deflection angle under the action of a Coriolis force in the free flight process; the position sensitive detector is used for acquiring the impact deflection angle position of each ion in the ion pulse and the ion strength corresponding to the impact deflection angle position; and the control subsystem is used for constructing a mass spectrum of the target analysis sample. According to the scheme, wide-range and high-resolution analysis can be flexibly balanced.

The application provides a method for reducing and controlling the sound wave impedance of isotropic material, belongs to the technical field of material sound wave impedance, and solves the problem of difficulty in detecting gas characteristics.The technical scheme comprises the following steps: step one, selecting isotropic material;step two, obtaining the motion equation of the isotropic material;step three, using a plane wave to solve a differential equation, and obtaining the sound wave impedance Z of the material according to a sound wave impedance definition formula;step four, rotating a vector Omega = {0, eta omega, 0} to represent rotating the material along an x2 axis, and rotating a vector Omega = {0, 0, eta omega} to represent rotating the material along an x3 axis;step five, changing the sound wave impedance of the material under the condition of rotating the axis.The beneficial effects of the application are as follows: the application can introduce the Coriolis force caused by rotation into the motion equation of the isotropic material, find the relationship between the sound wave impedance and rotation, and use rotation to reduce and control the sound wave impedance.

The utility model belongs to the field of atom inertia measurement, and particularly discloses an auxiliary device for evaluating the Coriolis force of an atom interferometer, the auxiliary device comprises a lifting rotation supporting module and an inclination detection adjusting module, and the inclination detection adjusting module comprises an inclination detection unit and an inclination adjusting unit; the inclination detection unit is used for detecting the inclination of the vacuum container; the inclination adjusting unit is located at the bottom of the vacuum container and used for supporting the vacuum container and adjusting the vacuum container to be horizontal according to the inclination. The lifting rotation supporting module can be coaxially arranged under a vacuum container of the atom interferometer and can drive the vacuum container to rotate so as to modulate the Coriolis force. According to the invention, the effect of rotating the vacuum container in the atom interferometer with high efficiency and high precision can be realized.

The invention discloses a microminiature Coriolis force mass flowmeter which comprises a flowmeter body, flanges are fixedly connected to the two ends of the flowmeter body, a connecting base is fixedly connected to the cambered surface of the surface of the flowmeter body, fixing pipes are fixedly connected to the two ends of the top of the connecting base, a control mechanism is arranged on the connecting base, and a protective shell is installed at the top of the connecting base. A mounting mechanism for mounting a protective shell is arranged at the top of the connecting seat, two measuring tubes are mounted in the protective shell, two bottom parts of the protective shell are fixedly connected with tube sleeves, and two ends of the two measuring tubes are sleeved with the two tube sleeves. Through the arrangement of the two second connecting sleeves, the protective shell can be conveniently installed on the flowmeter body, meanwhile, the two ends of the two measuring pipes can be more stably installed in the two first connecting sleeves through rotation of the two second connecting sleeves, and the two ends of the two measuring pipes are inserted into the four inserting holes correspondingly; therefore, the stability of the device during use can be improved, and meanwhile, the device is convenient to maintain.

The application discloses a low-temperature liquid mass flowmeter, and belongs to the Coriolis force mass flowmeter field, which comprises a measuring device, a heat preservation structure arranged outside the measuring device and a stress compensation device connected with the measuring device. The application can solve the problem that the existing mass flowmeter is not applicable to measuring low-temperature liquid.

The application discloses a kind of multi-span elastic supporting flow pipe stability parameter prediction method, it is related to flow pipeline vibration characteristic analysis technical field.By splitting the support position of multi-span pipeline into multiple independent pipe sections, vibration control equations describing each span pipeline are established respectively, the vibration control equations only consider the coupling effect of bending force, centrifugal force, gravity, coriolis force and inertia force of the pipeline, and do not contain any intermediate support constraint term;The intermediate support constraint is completely written into the inter-span coupling boundary condition, which avoids the defects of ambiguous meaning and difficult to converge in numerical calculation of traditional Dirac function method;By introducing dimensionless parameters to dimensionless the vibration differential equation, combined with the above elastic boundary and inter-span coupling constraint, the characteristic equation, characteristic function and eigenvalue under the complex boundary condition are derived, and the partial differential equation is converted into a system of ordinary differential equations after matrixization solution, and finally the accurate prediction value of natural frequency can be obtained.

An operating device for a rotation-rate sensor. A mechanical amplification of a deflection oscillatory motion and / or a phase shift of the deflection oscillatory motion relative to a harmonic drive oscillation of a seismic mass can be determined using an electronic apparatus of the operating device by taking into account at least one drive frequency variable with respect to a characteristic drive frequency of the harmonic drive oscillation of the seismic mass of the rotation-rate sensor and by also taking into account at least one detection frequency variable, which is provided by the operating device itself to the operating device, with respect to a characteristic detection frequency of the deflection oscillatory motion, caused by a Coriolis force, of the seismic mass put into the harmonic drive oscillation or with respect to a difference between the characteristic drive frequency and the characteristic detection frequency.

The invention relates to the technical field of tunnel simulation tests, in particular to a fire test system and method for a spiral tunnel. The fire test system for the spiral tunnel comprises a plurality of straight-line section tunnels, a plurality of curved-line section tunnels, a hoisting device, a plurality of fans, a temperature detection device and a wind speed detection device. The plurality of curved section tunnels and the plurality of straight section tunnels are spliced to form a tunnel main body; the lifting device is used for lifting the tunnel body to a preset slope. According to the fire test system for the spiral tunnel provided by the invention, a plurality of curved section tunnels or a plurality of curved section tunnels and a plurality of linear section tunnels can be spliced and matched with a hoisting device to form a tunnel with a gradient and a curve, and the tunnels with different structures are formed by splicing a plurality of modularized tunnels, so that the fire test system has flexibility; the special fire smoke behavior of a bent section tunnel and a spiral section tunnel can be simulated, and the simulation test of the Coriolis force effect and the obvious centrifugal force effect can be introduced and quantified, so that the accuracy of the simulation test is improved.

The invention discloses a Coriolis force mass flowmeter and a using method, and belongs to the field of flowmeters.The Coriolis force mass flowmeter comprises a flowmeter body, a measuring pipe is fixedly connected to the bottom of the flowmeter body, a protection assembly is arranged outside the measuring pipe, and an inflow pipe and an outflow pipe are arranged at the two ends of the flowmeter body respectively; connecting pipes are arranged on the two sides of the inflow pipe and the two sides of the outflow pipe, and sealing assemblies are arranged at the joints of the inflow pipe and the connecting pipes and the joints of the outflow pipe and the connecting pipes. Through cooperative use of all the devices, during use, through the protection assembly, during measurement, the vibration impact resistance rigidity and the external magnetic field shielding effect can be achieved, external vibration impact force can be absorbed, sound waves can be blocked, and the flow tube is not affected by external vibration interference; meanwhile, good protection performance on the measuring pipe is also improved, liquid leakage can be avoided when measured liquid is fed through the sealing assembly, and the sealing performance and the stability in the measuring process are improved.

The application provides a kind of rigid-flexible coupling spacecraft nonlinear stiffness softening effect prediction method based on improved multiscale method, the core is to improve the solution format of traditional multiscale method, for accurately predicting the nonlinear dynamic response of rigid-flexible coupling spacecraft, especially reveal the stiffness softening effect caused by coupling nonlinear inertial force and its influence on system stability.The method first establishes the dynamic model of the central rigid body-flexible beam-additional mass system, then obtains the accurate analytical expression through the reconstruction of multiscale method perturbation solution format, not only can clearly reveal that nonlinear coupling inertial force (Coriolis force, tangential inertial force, centrifugal inertial force) is the physical root of the overall stiffness softening of the system, and can quantitatively analyze the contribution of each inertial force, while having the advantages of strong applicability and comprehensive prediction ability.

A gyroscope (1) comprising a substrate (20) encompassing a principal extension plane (100), a force transmission means (40) movably attached to the substrate (20) by means of detection springs (30), and a seismic mass (50), wherein the seismic mass (50) is suspended movably relative to the substrate (20) via the force transmission means (40) such that the seismic mass (50) can be excited by means of drive means to a drive oscillation (102') about a drive axis (102) parallel to the principal extension plane (100), and when a gyroscope rate (103') extending parallel to the principal extension plane (100) and perpendicular to the drive axis (102) is present, the seismic mass (50) is excited to a detection oscillation (101') about a detection axis perpendicular to the principal extension plane (100) as a result of Coriolis forces. (101) is excitable, characterized in that the detection springs (30) are coupled to the force transmission means (40) in the area of ​​vibration nodes (71).

The utility model discloses a compact sandstone oil gas prediction crustal stress sensitivity coefficient measuring device, which comprises a measuring device main body, a compact sandstone sample, a pressure applying piece and a liquid outlet channel, a measuring table is arranged at the bottom end in the measuring device main body, and the compact sandstone sample is placed at the central position of the top of the measuring table; pressure applying pieces are arranged on the portions, on the two sides of the compact sandstone sample, of the measuring table, a liquid inlet pipe and a liquid outlet pipe are arranged on one sides of the pressure applying pieces correspondingly, pressure sensors are arranged on the liquid inlet pipe and the liquid outlet pipe correspondingly, a booster pump is arranged outside the measuring device body, the booster pump is connected with the liquid inlet pipe through a high-pressure pipeline, and the liquid inlet pipe is connected with the liquid outlet pipe through a high-pressure pipeline. And a Coriolis force mass flowmeter is arranged at one end of the liquid outlet pipe. By installing the measuring device main body, the compact sandstone sample, the pressure applying piece, the liquid inlet pipe, the liquid outlet pipe, the booster pump, the connecting pipe and the liquid outlet, the real stress state of an underground reservoir can be simulated, so that the measuring result is more accurate.

The invention provides an MEMS gyroscope sound interference simulation method based on a four-degree-of-freedom kinetic model, and belongs to the field of MEMS simulation and anti-interference design. According to the method, a four-degree-of-freedom coupling dynamic model of a frame-mass block in x and y directions is constructed, acoustic interference excitation and Coriolis force effects are introduced, and a complete differential equation set is established to describe system motion; through numerical solution and dynamic parameter adjustment, accurate simulation of influence of sound interference on a driving mode and an induction mode of the MEMS gyroscope is realized, and resonance interference characteristics are identified in combination with spectral analysis. According to the method, the problem that a traditional low-degree-of-freedom model cannot accurately simulate the acoustic-mechanical coupling effect is solved, and a quantitative analysis tool is provided for anti-acoustic interference design of the MEMS gyroscope.

The application belongs to the technical field of simulation of icing of rotary machinery, and discloses a three-dimensional ice shape simulation numerical calculation method for synchronous solution of rotary and static domains, which comprises the following steps: synchronously solving water drop impact characteristics of rotary components and static components; establishing an icing thermodynamic model and an overflow treatment mode of liquid water on rotary surfaces and static surfaces, and solving icing mass according to the overflow treatment mode; and calculating moving distance and moving direction of boundary grid nodes of the icing frozen surface to simulate ice shape growth. The method considers centrifugal force and Coriolis force generated by rotation, different water drop control equations are established for rotary components and static components, but water drop impact characteristics of the rotary components and the static components can be obtained simultaneously when solving. Moreover, the influence of air shear force and centrifugal force on flow of unfrozen liquid water is comprehensively considered, and ice shape calculation is realized when the rotary components and the static components exist simultaneously by using a multi-step method.

The embodiment of the utility model discloses a vertical wafer rotating corrosion mechanism, which comprises a motor, a rotating shaft, a rotating drum and a rotating drum fixing piece, an output shaft of the motor is connected with the rotating shaft, the rotating drum is fixed on the rotating shaft through the rotating drum fixing piece, a clamp and a quick release block are arranged on the rotating drum, and a plurality of placing grooves for placing wafers are arranged on the clamp. The quick release block is used for pressing the wafer in the placing groove, and an included angle of a preset angle is formed between the wafer in the placing groove and the rotating tangential direction of the rotating drum. According to the utility model, the Coriolis force effect generated by oblique rotation is utilized, so that the corrosive liquid forms micro-turbulence on the surface of the wafer, a stagnant boundary layer is destroyed, normal impact force is decomposed into tangential component force, and the capacity and the yield of the 3215 wafer are improved.

The application provides a Coriolis vibration gyroscope based on differential standing wave effect, which adopts a double-disc resonant gyroscope (DRG) three-layer structure. The structure comprises two mode-matched DRG ring structure masses and eight center coupling beams uniformly distributed around the center, and the overall structure layer is divided into three layers along the thickness direction, from top to bottom, which are an electric domain layer, an insulation layer and a bearing layer. In the driving mode of the inner and outer DRG structures, the Coriolis force is detected in the detection mode, and the mode is 45° different from the driving mode. The driving mode and the detection mode frequency of the inner and outer DRG structures are consistent, the inner and outer rings are connected through the center coupling beam, and the direct coupling of the driving and detection directions is realized. By using the differential standing wave effect, the detection capacitance change directly reflects the relative (differential mode) displacement of the two masses, and the direct and accurate measurement of the relative displacement is realized.

The application discloses a kind of vertical cantilever flow pipe critical parameter prediction methods containing water injection pump and Y type nozzle, it is related to flow pipe critical parameter calculation field.Prediction method is based on Euler-Bernoulli beam model and momentum theorem, the additional force generated by bending force, centrifugal force, coriolis force, inertia force, gravity and bend is considered comprehensively to establish the vibration differential equation of flow pipe.By introducing dimensionless parameter to vibration differential equation, the characteristic equation, characteristic function and eigenvalue under cantilever boundary condition are deduced, and after partial differential equation is converted into ordinary differential equation group, it is solved by matrixization.Finally, the accurate prediction value of critical flow velocity and critical frequency can be obtained.The method can effectively reflect the influence law of nozzle and concentrated mass on the vibration characteristics of flow pipe, and realize the accurate prediction of the critical parameters of vertical cantilever flow pipe with Y type nozzle and concentrated mass.

A calibration system and methods for flow metering technologies integrates a known primary reference standard (e.g., a gravimetric scale), configured to determine a mass of calibration fluid, in parallel with surrogate secondary masters (e.g., Coriolis effect flowmeters) connected via an adjustable flowpath having a closed loop mode, including a meter bank, a pump and a measuring section, and an open loop mode, including a reservoir, the meter bank, the pump, the measuring section and the primary reference standard, which enables calibration duality and redundant meter under test confirmation of calibration factors. The disclosed systems and methods enable life cycle assurance of the primary reference standard and the secondary masters' standard reliability and reproducibility over time and, as a redundant system, enable calibration of multiple flow metering technologies, such as, for example, volumetric, mass, density, viscosity and Reynolds number-reliant technologies, in one homogenous system.