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40 results about "Exciter" patented technology

An exciter (also called a harmonic exciter or aural exciter) is an audio signal processing technique used to enhance a signal by dynamic equalization, phase manipulation, harmonic synthesis of (usually) high frequency signals, and through the addition of subtle harmonic distortion. Dynamic equalization involves variation of the equalizer characteristics in the time domain as a function of the input. Due to the varying nature, noise is reduced compared to static equalizers. Harmonic synthesis involves the creation of higher order harmonics from the fundamental frequency signals present in the recording. As noise is usually more prevalent at higher frequencies, the harmonics are derived from a purer frequency band resulting in clearer highs. Exciters are also used to synthesize harmonics of low frequency signals to simulate deep bass in smaller speakers.

A high frequency response screen sound vibration exciter

The application belongs to the technical field of vibration exciters, and discloses a high-frequency-response screen sound-producing vibration exciter, which comprises an exciter main body, a plurality of mounting grooves capable of hiding screw rods are arranged on the exciter main body, two rotating shafts are rotatably arranged in the mounting grooves, a threaded sleeve is arranged in the mounting groove, a connecting screw rod for connecting a screen is arranged in the threaded sleeve, and the outer walls of the middle sections of the threaded sleeve are fixedly connected with the two rotating shafts in the mounting groove; after the connecting screw rod is controlled to rotate until the connection between the exciter main body and the screen is disconnected, the connecting screw rod does not need to be completely screwed out of the threaded sleeve, the rotating disc is controlled to rotate until the actuating piece is attached to the limiting protrusion, and then the threaded sleeve and the connecting screw rod are stored in the mounting groove, so that the loss of the connecting screw rod can be avoided.
Owner:ANHUI MINGTAI ELECTROACOUSTIC TECH CO LTD

Multi-exciter synchronous excitation method, equipment and storage medium

PendingCN122084216AEnsure time base consistencySuperposition of continuous and efficientVibration testingElasticity measurementVibration controlControl theory
A method for synchronous excitation of multiple exciters relates to the field of dynamic testing and vibration control technology for large civil structures. The method includes the following steps: after constructing a unified time reference based on satellite navigation signals and a rubidium atomic clock, excitation amplitude and phase parameters are obtained based on the target modal requirements, and these parameters are sent to all exciter slave stations; the exciter slave stations generate a reference trajectory based on the excitation amplitude and phase parameters, enabling the exciter motor shaft angle to follow the reference trajectory in real time and output the target excitation; the phase error is obtained based on the measured excitation phase value and the reference trajectory, and then the motor angular velocity of the exciter is corrected based on the phase error. This invention solves the problems of startup phase error and long-term frequency drift in master-slave triggering schemes, ensuring synchronous start-up of all exciters. Combined with dynamic correction of the exciter motor angular velocity, it suppresses phase drift during long-term operation, significantly improving the excitation efficiency of higher-order modes and the clarity of the response signal.
Owner:CHINA RAILWAY MAJOR BRIDGE ENG GRP CO LTD +1

A low noise nozzle ring vibration lapping device

The utility model relates to mechanical parts surface treatment equipment technical field especially a kind of low-noise nozzle ring vibration lapping device, including frame, spring pedestal, exciter, vibrating groove, the lapping device further includes sound insulation component;The sound insulation component includes sound insulation cylinder, upper cover and locking assembly that locking upper cover are fixedly installed on spring pedestal and located vibrating groove outside side, closedly cover in sound insulation cylinder top;The upper cover includes coaxially arranged outer tube, top cover and inner tube, the outer tube top end and inner tube top end are all fixedly connected in top cover lower end;The sound insulation cylinder is located the inside of outer tube;Inner tube is located the inside of vibrating groove;The top cover lower end and sound insulation cylinder upper end resist, by the utility model, working noise can be reduced, production environment is improved.
Owner:WUXI KAILITE POWER TECH CO LTD

Electronic musical instrument

ActiveDE102015217186B4Electronic instrumentEngineering
An electronic musical instrument (1) that generates a musical tone for a musical performance in accordance with a musical tone signal generated based on an actuated state of a control element (13), comprising: a soundboard (23) having a first end and a second end extending parallel to each other and attached to a predetermined part of the electronic musical instrument (1) by a plurality of first screws (TB) and a plurality of second screws (TB), respectively, and a vibration exciter (25) provided on the soundboard (23) and configured to cause the soundboard (23) to vibrate by being driven in accordance with the musical tone signal, thus causing the soundboard (23) to produce a musical tone, characterized in that the plurality of first screws (TB) and the plurality of second screws (TB) extend along the first and second ends, respectively.The second end is arranged in an offset manner such that a layer of each of the plurality of first screws (TB) and a layer of each of the plurality of second screws (TB) are not opposite each other in a symmetrical relationship in a direction orthogonal to the first and second ends, and a pad (33) for suppressing the resonance of the soundboard (23) is arranged between the vibration exciter (25) and the soundboard (23).
Owner:KAWAI MUSICAL INSTR MFG CO LTD

Six-degree-of-freedom large-load low-frequency excitation platform based on air spring

ActiveCN117470481Breduce stiffnessControllable excitation forceAir springElectric machine
The application belongs to the technical field of mechanical dynamics, and discloses a six-degree-of-freedom large-load low-frequency excitation platform based on an air spring, which comprises an exciter, wherein the exciter comprises an upper end plate, a base and a horizontal swing mechanism, the horizontal swing mechanism is partially arranged in the base, and the upper end plate is connected to the base; the base and the horizontal swing mechanism jointly form an air spring, and the air spring is arranged opposite to the upper end plate; the upper end plate is used for connecting a load; the excitation platform makes the air spring deform by introducing air into the air spring to float the upper end plate, and then floats the load. The application overcomes the influence of the target load gravity on excitation through the air spring, reduces the stiffness in the vertical direction, makes the motor provide the excitation force of full frequency band and controllable size for the load, and has good low-frequency excitation effect.
Owner:HUAZHONG UNIV OF SCI & TECH

Coriolis flow meter with a vibration-type sensor and use of the Coriolis flow meter

Coriolis flowmeter (1) comprising a vibration-type sensor for measuring a flow rate and / or flow velocity of a fluid medium carried in a pipeline, wherein the sensor comprises a vibrating tube (2), and at least one electrodynamic exciter (3.II) for exciting the vibrating tube (2) into a oscillating motion and at least one electrodynamic sensor (3.I or 3.III), in particular two sensors (3.I and 3.III), for detecting a measurement signal generated by vibrations of the tube (2), wherein the exciter (3.II) and / or the sensor (3.I or 3.III)III) comprises at least two components, wherein a first component is designed as a printed circuit board (7, 17) with at least one conductor track (9, 19) for forming a printed circuit board coil, wherein a second component is designed as a magnetic field generating element (6), wherein one of the two components is arranged directly or indirectly on or in the vibrating tube (2) and excites the tube (2) to vibrate or receives the measurement signal by relative movement to the second of the two components, characterized in that at least one turn, preferably all turns, of the conductor track (9, 19) has an area of ​​less than 3000 µm. 2 / turn, preferably smaller than 1500 µm² / turn.
Owner:ENDRESS HAUSER FLOWTEC AG

Vibronic measuring sensor for mass flow and density measurement with a monitoring function

PCT designated stageWO2026139196A1Hemt circuitsExciter
A vibronic measuring sensor (1) comprises: an oscillator (10) having at least one first measuring tube (10.1, 10,2; 20.1, 20,2; 30.1, 30,2) for carrying a medium; a first electrodynamic exciter (15; 25; 35) for exciting the oscillator (10) to produce flexural vibrations of the at least one first measuring tube (10.1, 10,2; 20.1, 20,2; 30.1, 30,2), the first electrodynamic exciter (15; 25; 35) comprising a first excitation coil (15.1; 25.1; 35.1) and a first excitation magnet (15.2; 25.2; 35.2); which interact to excite the flexural vibrations; at least one second electrodynamic exciter (18; 28, 29; 38) for exciting the oscillator (10) to produce flexural vibrations of the at least one first measuring tube (10.1, 10,2; 20.1, 20,2; 30.1, 30,2); the at least one second electrodynamic exciter (18; 28, 29; 38) comprising at least one second excitation coil (18.1; 28.1, 28.2; 38.1) and at least one second excitation magnet (18.2; 28.2, 29.2; 38.2); which interact to excite the flexural vibrations; at least one inlet-side electrodynamic sensor arrangement (12a) for detecting the flexural vibrations of the at least one first measuring tube (10.1, 10,2; 20.1, 20,2; 30.1, 30,2); and at least one outlet-side electrodynamic sensor arrangement (12b) for detecting the flexural vibrations of the at least one first measuring tube (10.1, 10,2; 20.1, 20,2; 30.1, 30,2); a measuring and operating circuit which is configured to drive the electrodynamic exciters with excitation signals; and to detect sensor signals from the electrodynamic sensor arrangements in order to determine a mass flow measured value and / or a density measured value, and to determine a value of a monitoring parameter which depends on a state of the measuring tube; characterized in that the first excitation magnet has a first hard magnetic material, and the second excitation magnet has a second hard magnetic material, the first hard magnetic material being stronger and having lower long-term stability at high tempera
Owner:ENDRESS HAUSER FLOWTEC AG

Single-sided directional sound system with multiple glass loudspeakers

PendingCN122179703AMicrophonesLayered productsDirectional soundMechanical engineering
A directional sound system includes a base member and at least one pane element secured to the base member. The base member includes a base surface. An exciter is secured to the at least one pane element and includes an exciter surface. An adhesive isolation ring is applied between the at least one pane element and the base member. A predetermined thickness of the adhesive isolation ring creates a gap between the base surface of the base member and the exciter surface. The at least one pane element is positioned on the base surface of the base member. The exciter generates a directional signal when energized.
Owner:GM GLOBAL TECHNOLOGY OPERATIONS LLC

A method of preventing sparking of an exciter brush of a generator

The present application belongs to the technical field of generator equipment monitoring, and particularly relates to a method for preventing the sparking of a generator excitation brush. First, a monitoring module is arranged at the rotor excitation brush of the generator to obtain a digital switching signal and an analog signal of sparking frequency when the brush sparks. After the digital switching signal and the analog signal are preprocessed, it is determined whether the signal threshold is exceeded. If so, a de-excitation signal is generated. According to the de-excitation signal result, a solution is matched and pushed to the user. The present application can solve the problem of poor monitoring effect of the generator excitation system in the prior art.
Owner:CHINA PETROLEUM & CHEMICAL CORP +1

DISPLAY DEVICE, SIGNAL PROCESSING METHOD AND SIGNAL PROCESSING PROGRAM

PendingDE112024003083T5LoudspeakersBending wave transducersDisplay deviceControl cell
A display device according to the present disclosure comprises a display unit, which includes a panel displaying a video, and an output control unit, which performs a control operation to cause the panel to emit sound by driving a vibration exciter arranged on a rear surface of the panel to set the panel into vibration. The vibration exciter comprises a vibration excitation element, a first element to which the vibration excitation element is attached, and a support element, which serves as a leg section for attaching the first element to a substrate forming the panel, the support element being configured to secure the first element to the substrate.
Owner:SONY GROUP CORP

A lateral feedback excitation device with high shunt impedance and horizontal light extraction

ActiveCN122269552BDigital signal processingRF front end
The application discloses a transverse feedback excitation device with high shunt impedance and horizontal light extraction, and belongs to the technical field of particle accelerators. The device comprises a beam position probe (BPM), an RF front end, an ADC module, a digital signal processing module, a DAC module, a power divider, a power amplifier, a low-pass filter, an exciter (Kicker) and a matching load. The exciter Kicker has four electrode strips located on both sides of the beam center line and parallel to each other, two electrode strips on the same side are connected in parallel, the characteristic impedance of a single electrode strip is 100Ω, and the equivalent total characteristic impedance after parallel connection is 50Ω; the four electrode strips are distributed in a quadrangular symmetry in the cross section of the vacuum chamber and avoid the horizontal median plane, so as to form an open light path channel. The application improves the shunt impedance of the exciter, reduces the radio frequency power demand, realizes impedance matching with a standard 50Ω system, and guarantees the horizontal unobstructed extraction of the synchrotron radiation light.
Owner:HARBIN INSTITUTE OF TECHNOLOGY (SHENZHEN) (INSTITUTE OF SCIENCE AND TECHNOLOGY INNOVATION HARBIN INSTITUTE OF TECHNOLOGY SHENZHEN)

Device and method for representing the foam porosity state of foamed lightweight soil with self-adjusting beams

A device and method for representing the foam porosity state of foamed lightweight soil with self-adjusting beams, and relates to the technical field of sound absorption coefficients measurement; the device includes a standing wave tube, a plurality of polyvinylidene fluoride piezoelectric films, a sensor, an exciter, a push-pull handle, an adjustable telescopic tube, a foamed lightweight soil detection material, a charge amplifier, a data memory, a data adapter, a signal generator, an adaptive power amplifier board, and a PC computer; the device of the invention has low cost, long service life, high measurement accuracy, relatively simple production process, and can be applied to different scenarios.
Owner:SOUTHWEST JIAOTONG UNIV

Vehicle windows with audio exciter

ActiveCN113966287BImprove sound performanceEnsure passenger safetyWindowsLoudspeaker transducer fixingGlass chipPlastic materials
The present invention relates to a vehicle window comprising: – a glass sheet (4) or a glass assembly; – a plastic material component (5) partially covering the glass sheet or glass assembly; – at least one fixing system for fixing an audio exciter mounted on the glass sheet or glass assembly, the fixing system comprising a base and an attachment portion (3), the base of the fixing system being connected to the plastic material component (5); and – at least one audio exciter fixed to the attachment portion (3) of the fixing system. The invention also relates to a method for manufacturing such a window.
Owner:SAINT-GOBAIN SAFETY GLASS CO FRANCE

Acoustic system, method for controlling an acoustic system, and method for manufacturing an acoustic system

To keep sound propagation within the intended range. [Solution] The acoustic system 100 includes a vibrating member 110, one or more first exciters 121 attached to the vibrating member 110 that vibrate the vibrating member 110 by an excitation force generated based on a first acoustic signal S1, one or more second exciters 122 attached to the vibrating member 110 that vibrate the vibrating member 110 by an excitation force generated based on a second acoustic signal S2, a first signal output device 131 that outputs the first acoustic signal S1, and a second signal output device 132 that outputs a second acoustic signal S2 to the second exciters 122, which is a corrected version of the first acoustic signal S1 that suppresses sound propagation in a non-propagation region 202 that is outside the region intended to propagate the sound emitted from the vibrating member 110 based on the first acoustic signal S1.
Owner:PANASONIC AUTOMOTIVE SYST CO LTD +1

Method for enhancing mixing in a cavity by plasma-based synthesis of a jet wave standing wave excitation

ActiveCN117760687BWall shearLeading edge
An experimental model based on plasma synthetic jet array excitation is provided to promote the enhancement of cavity mixing. A wall shear stress sensor is arranged upstream of the leading edge of the cavity, a wall shear stress sensor is arranged on the rear vertical surface of the cavity, and a dynamic pressure sensor is arranged on the bottom surface of the cavity. By applying amplitude and phase modulation to different rows or columns of plasma synthetic jet exciters, a traveling wave standing wave excitation method is realized to intelligently enhance the mixing of the cavity. First, a plurality of groups of excitation parameters are randomly initialized and the flow control benefits are evaluated; second, a proxy model is constructed to predict the best combination of excitation parameters by means of an intelligent optimization algorithm; finally, the discharge trigger signal sequence of the power supply is solved in reverse, and the benefits are improved through iterative testing. The plasma synthetic jet traveling wave standing wave excitation method has higher penetration depth, stronger mixing ability, better adaptability, and is more intelligent, and can better meet the needs of flame stable combustion under the wide working boundary of a scramjet engine.
Owner:AIR FORCE UNIV PLA

A large-size cavity structure multi-impulse vibrator vibration test design method

Traditional single-exciter vibration testing methods are limited by the heavy mass and low frequency of large transfer platforms, and the non-uniformity of boundary conditions in cavity structures, which easily leads to imbalances in local vibration energy distribution and makes it difficult to accurately simulate vibration responses under actual working conditions. This invention addresses this problem by proposing a multi-exciter vibration testing design method for large-size cavity structures. This method uses multiple exciters to simultaneously apply vibration excitation to the test piece along a single axis. For large-size products, the multi-exciter method can provide sufficient test thrust using multiple exciters. Furthermore, the invention addresses the lack of quantitative design criteria for the exciter position and number based on the geometric characteristics and modal properties of the cavity structure, and the difficulty of existing control algorithms in achieving precise decoupling and coordinated control of excitation forces under complex boundary conditions. These issues are resolved through the design and optimization of large-size test fixture structures and response constraint strategies.
Owner:BEIJING INST OF STRUCTURE & ENVIRONMENT ENG

Electronic vibration measurement system

The measurement system includes a vibration transducer (10) and measurement system electronics (20), which are electrically coupled to the transducer (10) for controlling the transducer and for evaluating the vibration measurement signals (s1, s2) provided by the transducer. The exciter assembly includes a vibration exciter (31) designed to convert electrical power having a time-varying current into mechanical power such that a time-varying driving force acts on the tube at a drive point formed by the vibration exciter on the tube mechanically connected to the vibration exciter, wherein the vibration exciter (31) is positioned and designed such that the drive offset (ΔE) between the drive cross-sectional area of ​​the tube surrounded by an imaginary circumference of the tube intersecting the drive point and a predefined reference cross-sectional area of ​​the tube, i.e., a minimum distance not greater than 3° mm of the tube length and / or less than 0.5% of the tube length, and wherein the vibration node of the vibration motion formed between two antinodes of the vibration motion of at least one of the second-order or higher-order vibration modes (deviating from the first-order vibration mode) of the tube is located within the reference cross-sectional area. The measurement system electronics (20) are designed to feed electrical power to the vibration exciter (31) via an electrical drive signal (e1) having a time-varying current, causing the tube to perform forced mechanical vibration with one or more vibration frequencies specified by the drive signal (e1), wherein the measurement system electronics provide the drive signal (e1) with a (AC) frequency (f eN1 ) or (AC) frequency (f eN2 The sinusoidal (useful) current components (eN1, eN2) make the (AC) frequency (f) eN1 The resonant frequency (f) of the pipe's naturally inherent odd-order vibration modes. 2n+1 Deviation and (AC) frequency (f) eN2 The resonant frequency (f) of the even-order vibration mode inherent in the tube. 2n+2 The deviation is less than 1% and / or less than 1 Hz, and the measured value of at least one flow parameter of the measurement material guided in the transducer is determined based on the corresponding useful signal component (s1N1; s2N1; s1N2; s2N2) of at least one of the vibration measurement signals (s1, s2).
Owner:ENDRESS HAUSER FLOWTEC AG

Electronic vibration measurement system

ActiveCN116368367BSpecific gravity using flow propertiesDirect mass flowmetersVibration measurementElectric drive
The measurement system includes a vibration transducer (10) and electrically coupled measurement system electronics (20) for controlling the transducer and evaluating the vibration measurement signal provided by the transducer. The exciter device has a vibration exciter (31) positioned and oriented such that the drive offset (ΔE) is no greater than 0.5% of the tube length. The measurement system electronics (20) is configured to provide electrical power to the vibration exciter (31) via an electrical drive signal (e1) having a time-varying current, and to at least intermittently provide a drive signal (e1) containing a sinusoidal (second useful) current (eN2) with a (second) (AC) frequency, so as to monitor the mass of the measured substance based on a corresponding (second) useful signal component (s1N2; s2N2) of at least one of the vibration measurement signals (s1, s2).
Owner:ENDRESS HAUSER FLOWTEC AG

An acoustic feedback aerospace methane engine electric ignition system

PendingCN122328265ATransformerAcquisition Scheme
The present application relates to the technical field of aerospace engine, and specifically discloses an acoustic feedback type aerospace methane engine electric ignition system.The present application collects the sound signal generated by electric spark through integrating an audio frequency sensor at the ignition electrode, cooperates with the signal amplification and filtering circuit to carry out signal amplification and filtering processing, and carries out frequency analysis and amplitude analysis by the host computer, solves the technical problems that the existing exciter cannot judge the spark working state due to the absence of feedback circuit, and the signal clutter interference of the transformer voltage acquisition scheme is serious and it is difficult to accurately feedback the ignition condition, improves the accuracy of spark frequency and spark energy size determination in the ignition process, and meets the stringent requirements of aerospace methane engine on ignition reliability and state measurability.
Owner:JIUZHOU CLOUD ARROW (BEIJING) SPACE TECH CO LTD

Optical cable routing determination method, optical sensing system, device, and storage medium

ActiveCN117335874BGuaranteed positioning accuracyImprove troubleshooting speedTelecommunicationsSound wave
The present application relates to the field of optical cable routing survey, and discloses an optical cable routing determination method based on an exciter, an optical sensing system, equipment and a storage medium. The method comprises: the exciter converts device information and position information of the exciter into voice information based on a start instruction issued by a server, and plays the voice information to generate sound waves, which act on an optical cable arranged around the exciter to cause deformation, an optical cable sensing device acquires reflected light signals returned based on the deformation, and obtains the position of the optical cable well based on vibration information, and the server obtains the optical cable routing based on the positions of the optical cable wells. The scheme places an exciter capable of emitting specific voice content on the optical cable well, analyzes vibration characteristics in the optical cable to obtain the position of the exciter, thereby determining the optical cable routing, ensuring the positioning accuracy of the optical cable well, improving the accuracy of the optical cable routing determination result, and improving the optical cable routing troubleshooting speed.
Owner:QUALSEN (GUANGZHOU) TECH CO LTD

A low-power electromagnetic resonant tactile exciter, its design method, and a wearable device.

ActiveCN121742658BRealize power consumption driveimprove good performanceInput/output for user-computer interactionGraph readingCopper wireLow-power electronics
A low-power electromagnetic resonant tactile exciter, its design method, and a wearable device are disclosed, belonging to the field of tactile feedback technology. In the exciter: a slit is formed in the middle of a thin-film attachment layer, dividing it into an inner disk and an outer annular band, connected by a fan-shaped cantilever beam; the fixed end of the fan-shaped cantilever beam is fixedly connected to a drive coil layer, and the free end is fixedly connected to a magnet, with a preset central angle to adjust the resonant frequency. The drive coil layer is an annular cylinder made of wound copper wire, surrounding the magnet; an anti-fall-off bottom cover layer is located at the bottom of the drive coil layer. This invention achieves a low-power design for the electromagnetic resonant tactile exciter through multi-parameter collaborative optimization, enabling precise control of the resonant frequency of the tactile exciter to match the sensitive frequency band of the skin; the operating power consumption is only in the microwatt range, and it is integrated into a soft, thin electronic skin through an extendable serpentine connecting line and a perforated, breathable flexible substrate, significantly reducing energy consumption while significantly improving user comfort.
Owner:DALIAN UNIV OF TECH

Glazing for transmitting sound waves

PendingCN122342192ASound waveVibration exciter
The present invention relates to a glass assembly for a vehicle, which is suitable for emitting sound waves. The glass assembly includes a glass assembly having a first surface suitable for being disposed inside the vehicle and a second surface suitable for being disposed outside the vehicle. The glass assembly includes at least one first exciter and at least one second exciter.
Owner:SAINT-GOBAIN SAFETY GLASS CO FRANCE

Method for checking a vibronic measuring system

A measuring transducer has a vibration element, an electromechanical oscillation exciter, and a sensor for registering mechanical oscillations at a first measuring point and providing oscillation signal representing movements of the vibration element, and a housing for the measuring transducer. The oscillation exciter, the first oscillation sensor and the vibration element are arranged within the housing. The method includes positioning a (test-) magnetic for producing a (test-) magnetic field causing vibration for producing a test signal, using the test signal for ascertaining a characterizing number value, which quantifies an oscillation characterizing number, and comparing the characterizing number value with threshold values for the oscillation characterizing number to detect a disturbance of the measuring system, when the characterizing number value exceeds a corresponding threshold value, or has left a value range bounded by the threshold value.
Owner:ENDRESS HAUSER FLOWTEC AG

String instruments and program

PendingJP2026101545AGuitarsMusic aidsSound generationEngineering
This provides a new technology that allows for the tuning of stringed instruments. [Solution] A stringed instrument according to one embodiment of the present invention includes a plurality of strings including a first string, a soundboard, an exciter for vibrating the soundboard, a guide sound generation unit that generates a signal indicating a guide sound based on a first frequency determined in correspondence with the first string for a predetermined period of time, and a drive signal generation unit that generates a first drive signal for driving the exciter so that the guide sound is generated.
Owner:YAMAHA CORP

Power generators and methods of using the same

PendingUS20260189199A1Audio power amplifierExciter
A system may include an exciter to provide a signal comprising a frequency. A system may include an amplifier to amplify the signal to provide an amplified signal. A system may include a match network to adjust an impedance of the system to at least one non-fifty-ohm match state. A system may include a controller to adjust the frequency.
Owner:AES GLOBAL HLDG PTE LTD

Modular coriolis flowmeter

The invention relates to a modular Coriolis flowmeter (1) for determining a process variable of a flowable medium, comprising: - a measuring tube module (4) comprising: at least one measuring tube (3i) for conducting the medium; a primary exciter component (36), in particular a passive primary exciter component (36); a primary sensor component (38i), in particular a passive primary sensor component (38i); a connection body (35), wherein the connection body (35) is connected to, in particular integrally joined to, the at least one measuring tube (3i), - a carrier module (16) comprising: a receptacle (23), into which the measuring tube module (4) can be introduced; an auxiliary exciter component (13), in particular an active auxiliary exciter component (13); an auxiliary sensor component (14i), in particular an active auxiliary sensor component (14i); a fastening device (2) for removably fastening the measuring tube module (4) in the carrier module (16), in particular in the receptacle (23), wherein a connection between the measuring tube module (4) and the carrier module (16) is realized via the connection body (35), characterized in that the fastening device (2) is configured to: produce at least one plastic deformation (100) in a connection body fastening portion (X) of the connection body (35) when the measuring tube module (4) is fastened in the carrier module (16).
Owner:ENDRESS HAUSER FLOWTEC AG

A coriolis flowmeter and method of controlling coriolis flowmeter drive signals

This application discloses a Coriolis flow meter, comprising: a measuring tube; an exciter configured to drive the measuring tube according to a drive signal; a vibration pickup configured to collect vibration signals from the measuring tube, the vibration signals characterizing the vibration state of the measuring tube; and an analog drive module configured to: receive the vibration signals collected by the vibration pickup, compare the amplitude of the vibration signals with a preset amplitude to calculate the required gain setting value, and generate a drive signal based on the gain setting value; wherein the analog drive module includes a two-stage gain control circuit and a conversion circuit, and according to the gain setting value, the vibration signal is sequentially amplified by the first-stage gain control circuit and the second-stage gain control circuit to obtain an amplified signal, and the amplified signal is converted by the conversion circuit to obtain the drive signal. This application can quickly adjust the gain applied to the drive signal under complex working conditions such as gas-liquid two-phase flow to maintain the vibration of the measuring tube.
Owner:GOLDCARD HIGH TECH +1

Vibronic sensor for mass flow and density measurement with monitoring function

A vibronic sensor (1) comprises: an oscillator (10) with at least one first measuring tube (10.1, 10.2; 20.1, 20.2; 30.1, 30.2) for guiding a medium; a first electrodynamic exciter (15; 25; 35) for exciting the oscillator (10) to bending vibrations of the at least one first measuring tube (10.1, 10.2; 20.1, 20.2; 30.1, 30.2), wherein the first electrodynamic exciter (15; 25; 35) comprises a first excitation coil (15.1; 25.1; 35.1) and a first excitation magnet (15.2; 25.2; 35.2); which cooperate to excite the bending vibrations; at least one second electrodynamic exciter (18; 28, 29; 38) for exciting the oscillator (10) to bending vibrations of the at least one first measuring tube (10.1, 10.2; 20.1, 20.2; 30.1, 30.2); wherein the at least one second electrodynamic exciter (18; 28, 29; 38) includes at least one second excitation coil (18.1; 28.1, 28.2; 38.1) and at least one second excitation magnet (18.2; 28.2,29.2; 38.2) comprises; which cooperate to excite the bending vibrations; at least one inlet-side electrodynamic sensor arrangement (12a) for detecting the bending vibrations of the at least one first measuring tube (10.1, 10.2; 20.1, 20.2; 30.1, 30.2); and at least one outlet-side electrodynamic sensor arrangement (12b) for detecting the bending vibrations of the at least one first measuring tube (10.1, 10.2; 20.1, 20.2; 30.1, 30.2); a measuring and operating circuit configured to drive the electrodynamic exciters with excitation signals; and to detect sensor signals from the electrodynamic sensor arrangements in order to determine a mass flow rate measurement and / or a density measurement, as well as to determine a value of a monitoring parameter which depends on a state of the measuring tube; characterized in that the first excitation magnet comprises a first hard magnetic material,and the second excitation magnet comprises a second hard magnetic material, wherein the first hard magnetic material is stronger and less stable over the long term at high temperatures than the second hard magnetic material, wherein the measuring and operating circuit is configured to drive the first electrodynamic exciter with an excitation current of a first excitation frequency corresponding to a natural frequency of a bending vibration of the at least one measuring tube, to drive the second electrodynamic exciter with an excitation current of a second excitation frequency which causes an excitation of a bending vibration of the measuring tube out of resonance, to determine the mass flow rate and / or the density value based on the vibrations of the at least one measuring tube at the first excitation frequency, and to determine the value of the monitoring parameter based on the vibrations of the measuring tube at the second excitation frequency.
Owner:ENDRESS HAUSER FLOWTEC AG

Coriolis mass flowmeter and method of operating same

A method for determining variables affecting the total zero error of a Coriolis mass flowmeter, the method comprising: exciting a bending vibration mode of vibration; measuring a first total zero error (T) at a flow rate of zero; determining a first damping value (D) of the bending vibration mode of vibration; measuring an exciter-independent zero error (I) during a decay vibration of the bending vibration mode at a flow rate of zero; determining a first exciter-dependent contribution (E) to the first total zero error (T) using the first total zero error (T) and using the exciter-independent zero error (I); and determining a sensitivity coefficient (S) for the bending vibration mode using the first exciter-dependent contribution (E) to the total zero error (T) and using the first damping value (D).
Owner:ENDRESS HAUSER FLOWTEC AG

MEMS gyroscope array error suppression device and method based on active piezoelectric excitation

ActiveCN121498648BGyroscopeRandom noise
The application relates to a MEMS gyro array error suppression device and method based on active piezoelectric excitation. The MEMS gyro array error suppression device and method based on active piezoelectric excitation designed by the application applies controlled low-frequency micro-amplitude mechanical vibration to the MEMS gyro array through a piezoelectric exciter, physically modulates the internal resonance state of the gyroscope to reduce the time correlation of the scale factor error, and converts systematic deviation into random noise. In combination with a base matched in terms of thermal expansion coefficient and double-mode signal processing, the device can separate effective signals while suppressing thermal stress interference, so that the array fusion algorithm can eliminate common-mode errors, and the measurement precision is improved to within 0.5 degrees without changing the sensor process.
Owner:NINGBO JUNGE DEFENSE TECH CO LTD