96 results about "Mechanical resonance" patented technology

The invention relates to the technical field of textile equipment testing, in particular to a yarn textile high-speed spindle operation stability testing method and system, and the method comprises the following steps: S1, testing element layout; s2, initializing the system; s3, carrying out transient test; s4, testing a steady state; s5, interference processing: carrying out spectrum analysis on the originally acquired data, identifying interference frequency characteristics, eliminating interference by adopting a notch filtering and Kalman filtering combined method, and verifying a filtering effect; s6, parameter correlation modeling: constructing a vibration-temperature-tension-rotating speed parameter correlation model by adopting a control variable method, solving model parameters through a fitting algorithm and verifying validity; s7, quality tracing; s8, stability judgment; and S9, performing real-time monitoring and regulation. According to the method, a combined filtering scheme of notch filtering and Kalman filtering is adopted, fixed interference and random interference such as power frequency and mechanical resonance are suppressed in a targeted manner, and through comparison of locally amplified signals, the filtered signals are smooth in waveform and thorough in noise removal, and the signal-to-noise ratio and reliability of vibration detection signals are improved.

A method for detecting interference between a transducer of acoustic signals and a sensor having a mechanical resonance frequency with a frequency band that includes transmitting an acoustic signal within a known range of frequencies, in a sequence during a predetermined time window, monitoring the output signal from the sensor within said time window, comparing the transmitted signal with the sensor output signal and detecting deviations in the sensor output signal corresponding to frequencies in the acoustic signal, and determining the acoustic frequencies interfering with the sensor signal. A system for detecting interference including a transducer, configured to emit a sequence of acoustic signals, and a sensor configured to produce an output signal, an analysis unit adapted to monitor said output signal with the acoustic signal.

The invention discloses a double-inertia elastic position servo system and a control method thereof, and the method comprises the steps: taking a motor speed as the input of a second-order linear expansion state observer in an active disturbance rejection controller, introducing a speed observation error, reconstructing internal and external disturbances, and observing the motor speed and the internal and external disturbances. The structure of the observer is simplified, the response speed of the system is improved, system internal and external disturbances including time-varying elastic disturbances caused by elastic deformation of the transmission mechanism are observed in real time, the time-varying elastic disturbances are compensated in combination with state error feedback, and the resonance problem is suppressed. According to the double-inertia elastic position servo system and the control method thereof, the system structure is simplified, the response speed of the system is increased, the anti-interference capacity of the system is improved, meanwhile, the inherent problems of mechanical resonance, position tail end buffeting and the like of the double-inertia elastic position servo system are effectively solved, and high-precision position servo control is achieved.

The invention provides a hydraulic turbine set valve fault diagnosis method, system, equipment and product, and is applied to the field of hydroelectric equipment fault diagnosis. On one side of the edge end, an initial voiceprint signal, an initial vibration signal and temperature data of a hydraulic turbine set valve are collected; taking the initial voiceprint signal as a reference signal, and performing noise reduction processing on the initial vibration signal based on the time domain correlation between the fluid noise in the initial voiceprint signal and the first noise in the initial vibration signal; by taking the vibration noise reduction signal as a reference signal, performing noise reduction processing on the initial voiceprint signal based on the frequency domain correlation between the mechanical resonance noise in the vibration noise reduction signal and the second noise in the initial voiceprint signal; and based on the vibration noise reduction signal, the voiceprint noise reduction signal and the temperature data, performing fault diagnosis on the hydraulic turbine set valve to obtain a fault diagnosis result. Therefore, fault diagnosis is carried out through cooperative noise reduction of the voiceprint signal and the vibration signal in combination with multi-dimensional data, and the fault diagnosis accuracy of the hydraulic turbine set valve is improved.

The application discloses a kind of multi-parameter collaborative control method and system of traction machine frequency converter, is specifically related to elevator traction machine frequency converter control technical field, for solving the mechanical resonance problem caused by parameter discrete setting in prior art;It is by real-time acquisition speed, torque and current parameters, extract harmonic component and calculate energy distribution ratio to identify resonance state, and then modal decomposition and modal participation factor calculation are carried out to resonance band signal, according to determine key parameters and adjustment direction, finally realize the effective suppression of mechanical resonance by multi-parameter collaborative adjustment set value.

The invention relates to the field of enclosed bus detection, in particular to an intelligent detection method and system for the operation state of an enclosed bus. The method comprises the following steps: acquiring a multi-source real-time monitoring data set of an isolated-phase bus, and based on the multi-source real-time monitoring data set, performing time-frequency domain transformation processing on a three-axis vibration acceleration signal to separate and extract vibration characteristic frequency components dominated by electrodynamic pulsation, and generating a bus vibration characteristic spectrum set; on the basis, operation modal analysis and electrodynamic force frequency identification are carried out, the dominant inherent frequency and the electrodynamic force main excitation frequency of the bus structure are solved in real time, the approaching degree and the energy coupling degree between the dominant inherent frequency and the electrodynamic force main excitation frequency are calculated, and a mechanical resonance risk index set is generated; based on this, multi-dimensional evaluation of the resonance risk state is performed, and a closed bus resonance risk state report for guiding operation and maintenance intervention is generated accordingly. According to the invention, in the enclosed bus operation state detection process, the safety and reliability of power grid key equipment are significantly improved.

The invention discloses an air cooling radiator fan rotating speed control method and system, and relates to the technical field of fan control, and the method comprises the following steps: collecting vibration acceleration data on a controller circuit board of a multi-fan array; evaluating the current vibration state of the fan system based on the vibration acceleration data; adjusting a synchronization error allowable range of the multi-fan array based on the vibration state; acquiring real-time rotating speed information of each fan in the multi-fan array; generating a signal correction instruction based on the synchronization error allowable range and the real-time rotating speed information of each fan; and adjusting the rotating speed of each fan in the multi-fan array on the basis of the signal correction instruction. The embodiment of the invention has the advantages of effectively coping with the rotating speed synchronous control challenge of the fan system in different vibration states by dynamically adjusting the allowable range of the synchronous error, and avoiding the instability of the control system and hardware degradation caused by mechanical resonance.

Provided is a micromechanical electrical signal amplifier, which can be applied to the field of microelectronics. The structure of the amplifier comprises: an electro-mechanical conversion structure for generating an electrostatic driving displacement; a mechanical resonance structure for generating an amplified electrical signal in response to the amplified electrostatic driving displacement; and a mechanical-electric conversion structure for outputting the amplified electrical signal, wherein the mechanical resonance structure comprises a first surface and a second surface arranged oppositely; the electro-mechanical conversion structure is connected to the first surface of the mechanical resonance structure; and the mechanical-electric conversion structure is connected to the second surface of the mechanical resonance structure. The elastic beam group in the mechanical resonance structure adopts a piezoresistive material, and the self-amplification effect of the mechanical resonance structure is used to amplify the electrostatic force response displacement and further amplify the electrical signal.

For tuning a vibrating conveyor with an electric vibrator unit (4) driving a vibrating element (5) connected with a conveying unit (3) of the vibrating conveyor (1) so that the conveying unit (3) is oscillated to a mechanical resonance frequency f R of the vibrating conveyor (1), it is provided that the electric drive unit (10) changes the frequency f V of the alternating drive voltage (u V ) in a given frequency range, that the current consumption of the electric vibrator unit (4) is measured at different applied frequencies f V of the alternating drive voltage (u V ) and that the electric drive unit (10) uses the frequency f V with the lowest current consumption of the electric vibrator unit (4) as the frequency f V of the alternating drive voltage (u V ) to operate the vibrating conveyor (1).

Provided is a control device for an alternating-current rotary electric machine that can reduce noise and suppress an increase in noise of the alternating-current rotary electric machine by taking into account a mechanical resonance period of the alternating-current rotary electric machine, and an electric power steering device. The control device (10) for the alternating-current rotary electric machine switches n zero-phase candidate voltage values in order every switching period (Tv) to calculate a zero-phase voltage value (Vz), turns on and off a switching element based on a voltage command value corrected based on the zero-phase voltage value (Vz), sets a deviation between the zero-phase voltage value (Vz) and a value that is a j multiple of the zero-phase voltage value (Vz) delayed by the switching period (Tv) as a zero-phase time delay deviation value (Vzdif), j is a natural number that minimizes a difference between a half period of a mechanical resonance period (Tm) of the alternating-current rotary electric machine and a j multiple of the switching period (Tv), the n zero-phase candidate voltage values are set in advance so that a root mean square value (Vzdif_rms) of the zero-phase time delay deviation value is smaller than an alternating-current component root mean square value (VzAC_rms) of the zero-phase voltage value.

The utility model discloses a mechanical resonance type vehicle suspension dynamic performance testing device which comprises a mechanical excitation device, a wheel fixing device and a bottom plate, the mechanical excitation device is installed on the bottom plate and generates displacement excitation, and the wheel fixing device is installed on the mechanical excitation device and fixes vehicle wheels. Displacement excitation generated by the mechanical excitation device acts on vehicle wheels through the wheel fixing device, and displacement excitation is generated on a vehicle suspension. The mechanical shock excitation device is reasonable in structural design, the mechanical shock excitation device adopts an inner and outer eccentric wheel structure and has the characteristics of large load, adjustable amplitude and frequency and compact structure, and the wheel fixing device is simple in structure, reliable in fixation, lower in manufacturing cost, simple to maintain and convenient to arrange and use in a production field.

The invention provides a reconfigurable topological humanoid robot based on morphological resonance and quantum perception, and the system comprises a reconfigurable topological robot body which is composed of intelligent skeleton units which can be dynamically recombined and connected, and the mechanical structure of the reconfigurable topological robot body is used as a memory medium of a motion skill; the distributed quantum entanglement sensing network is integrated to all the intelligent skeleton units, and instantaneous and zero-delay collaborative sensing of the whole body state of the robot is achieved through the quantum entanglement state; and the morphological resonance track excitation system directly generates a target motion track by exciting a specific mechanical resonance frequency mode of the robot body. According to the invention, a core normal form of a physical form, namely a memory medium, is provided, motion skills are coded in variable mechanical topology and resonance characteristics, global synchronization is realized through quantum entanglement, and motion is excited and induced through resonance, so that natural acquisition, physical storage and adaptive reproduction of the skills are realized; and a traditional hierarchical control architecture of'calculation-control-execution 'is thoroughly subverted.

The invention provides a precise motion control system and a control method thereof, and relates to the technical field of automatic control. The system comprises a visual track acquisition and characterization unit, a multi-source working condition perception and data fusion unit, a resonance characteristic mining and parameter mapping unit and an online parameter injection and controller reconstruction unit. The method comprises the following steps: acquiring an optical mark point image at a motion tail end, generating actual track data by adopting a sub-pixel edge extraction algorithm, synchronously acquiring multi-source working condition information such as load current, temperature and working position, performing data fusion, and dynamically outputting controller parameters according to real-time working conditions by utilizing a parameterized prediction model. And finally, the parameters are injected into a digital filter through a dynamic link library to realize online reconstruction of the controller. The problem that the motion precision of a fixed parameter control system is reduced due to mechanical resonance when working conditions change is solved, adaptive adjustment of parameters of a motion controller is achieved, and the track precision and the operation stability of a precise motion system are remarkably improved.

The application discloses a kind of multimodal collaborative motion control method and system of semiconductor probe station, the method includes: in the transition period of macro motion table carrying wafer to execute large stroke deceleration and at deceleration end section, the coupling disturbance characteristics that the estimated disturbed trend that macro motion table will cause micro motion table is obtained based on the residual motion state of macro motion table and is characterized, based on coupling disturbance characteristics drive micro motion table to execute reverse feedforward compensation trajectory, inhibit the residual oscillation that the residual oscillation of micro motion table is excited by the structural coupling transmission of macro motion table sudden stop kinetic energy;In the process that micro motion table carries probe approaches wafer, the occurrence of physical contact event is judged according to the transient singular feature extracted to the driving signal of micro motion table time-frequency analysis, in response to the determination result, the control mode of micro motion table is switched from trajectory tracking mode with position follow as target to energy dissipation mode with mechanical resonance energy as target, realize the effect of giving priority to both efficiency and high accuracy.

The application discloses a kind of air-cooled radiator fan rotating speed control method and system, it is related to fan control technical field, its method includes: the vibration acceleration data on the controller circuit board of multiple fan array is collected;Fan system is currently based on the vibration acceleration data evaluation vibration state;Based on the vibration state adjustment multiple fan array Synchronization error allowable range;Real-time rotating speed information of each fan in the multiple fan array is obtained;Based on the synchronization error allowable range and the real-time rotating speed information of each fan Signal correction instruction is generated;Based on the signal correction instruction, the rotating speed of each fan in multiple fan array is adjusted, and the embodiment of the application has the advantages that the synchronization error allowable range is adjusted dynamically, effectively cope with the rotating speed synchronization control challenge of fan system under different vibration states, avoid the instability of control system and the disadvantage of hardware degradation caused by mechanical resonance.

The invention discloses a bladder function improvement system and method for urethral dilation. The system identifies tissue viscoelasticity and calculates mechanical resonance frequency on the basis of a Kelvin-VoIP model, and a dynamic pulsating expansion pressure field fitting tissue characteristics is generated through a dynamic rheology driving unit. According to the method, a mechanical electrophysiology double-frequency phase locking technology is adopted, nerve electrical stimulation is accurately anchored to the wave crest phase of mechanical pressure waves, and the synergistic interaction of tissue physical remodeling and nerve reflex arc repairing is achieved. Meanwhile, a spasm-induced fluid impedance instantaneous damping feedback mechanism is introduced into the system, and when abnormal myoelectricity is monitored, the rigidity of the system is instantaneously reduced so as to actively defend damage caused by spasm. Closed-loop control is established through quantified rheological indexes, the problems that traditional rigid expansion is large in blindness and prone to tearing are solved, and precise, intelligent and safe rehabilitation treatment of urethrostenosis is achieved.

The invention relates to the technical field of atomizer control, in particular to an intelligent atomization control method and system for an atomizer, and the method comprises the steps: obtaining parameters of an equivalent model of a piezoelectric transducer; analyzing parameter fluctuation characteristics of the piezoelectric transducer under different external conditions according to parameters of the equivalent model; constructing an overall equivalent circuit of the atomizer, wherein the overall equivalent circuit comprises an LC filter and a piezoelectric transducer at the output end of an inverter; applying one or more pulse voltages to the overall equivalent circuit to trigger a transient phenomenon, measuring a transient current in the circuit, and determining the overall resonant frequency; based on the nonlinear correlation between the whole resonant frequency and the mechanical resonant frequency of the piezoelectric transducer, fitting related data by using a curve fitting algorithm; and according to the result of the curve fitting algorithm, calculating and tracking the mechanical resonant frequency of the piezoelectric transducer, and applying the tracked mechanical resonant frequency to the atomization system. The problems of slow tracking and low efficiency caused by fluctuation of the resonant frequency of the piezoelectric transducer in an existing atomization system due to external conditions can be solved.

The application discloses an ultrafiltration permeation regulation method and device based on a gradient sponge structure dialysis membrane and relates to the technical field of hemodialysis. An intelligent response membrane assembly containing a nonlinear aperture gradient is constructed; a signal is collected and a concentration polarization critical index is calculated; when the threshold value is exceeded, a multi-frequency coupling pulse control instruction containing a mechanical resonance excitation waveform and a phase reverse matching osmotic pressure oscillation waveform is generated; mechanical resonance excitation is applied to the blood side to induce membrane layer micro-breathing deformation, and an osmotic pressure oscillation waveform is injected into the dialysate side to form a reverse solute diffusion field; microgel deformation feedback signals are monitored in real time, waveform parameters are dynamically adjusted, and the concentration polarization critical index is returned to a safe interval until the ultrafiltration flux is adaptively regulated. The device comprises an intelligent gradient membrane assembly, a fluid power regulation module, an osmotic pressure wave generation module, a sensing feedback array and a central processing unit, can effectively inhibit membrane pollution and concentration polarization, and improves the system operation stability.

This invention relates to the field of building materials and precast concrete component manufacturing technology, and discloses an integrated process for precise positioning and centrifugal compaction of steel reinforcement skeletons for non-prestressed cement poles. It aims to solve the problems of existing centrifugal processes lacking dynamic feedback, failing to effectively correct mid-span deflection of the steel reinforcement skeleton, and being prone to mechanical resonance and uneven pipe wall compaction due to the solidification operation mode. The process uses laser to acquire three-dimensional projection data of the skeleton, driving the support mechanism to apply an upward compensating force for centering and mold closing verification. During the centrifugation stage, the motor current and machine base vibration frequency are monitored to dynamically adjust the speed, phase, and acceleration, achieving adaptive material uniformity and traversing the resonance zone. Simultaneously, the slope of the motor power load change is monitored to determine the compaction degree, and the opening angle of the slurry discharge valve is synchronously adjusted according to the controlled deceleration gradient. This achieves physical centering of the skeleton before mold closing, constructs a dynamic centrifugal closed loop based on dynamic feedback, quantifies the compaction benchmark, and smoothly releases pressure.

According to the compressor control method and device, the medium and the air conditioner, vibration risk parameters of a compressor are obtained, an energy efficiency mode or a vibration suppression mode is triggered according to the vibration risk parameters, and target torque compensation coefficients and target operation frequencies in the two modes are correspondingly determined to control operation of the compressor. According to the scheme, the limitation of a traditional single frequency-torque compensation coefficient mapping relation is broken through, the regulation and control strategy can be dynamically switched according to the vibration risk, and energy efficiency improvement is guaranteed through the adaptive compensation coefficient and frequency when the energy efficiency mode is triggered; and when the vibration suppression mode is triggered, the mechanical resonance under the low-frequency working condition is effectively suppressed by the corresponding parameter combination, and the operation stability is improved, so that the precise balance between the energy efficiency improvement and the operation stability optimization is realized.

The invention discloses a system and a method for disabling a microphone of a mobile terminal through peripheral simulation. A dual disabling mechanism of system-level microphone occupation and physical-level ultrasonic shielding is realized through a peripheral device connected with a charging interface. The method comprises the steps of collecting a charging interface state, equipment vibration and audio configuration parameters, identifying an equipment type and extracting a mechanical conduction path; registering virtual audio equipment to obtain a system permission, and scanning and positioning the resonant frequency of a microphone; configuring ultrasonic parameters to generate an eddy current interference mode, and constructing a turbulence barrier path; generating a resonance enhancement primitive library based on the mechanical conduction path and the barrier path, and coupling the resonance enhancement primitive library with the focus token to form a directional shielding scheme; constructing a mechanical resonance envelope based on a vibration conduction efficiency peak value, and judging interference coverage to form a shielding effect field; and finally, an optimal parameter combination is positioned in a multi-dimensional interference space through hierarchical search, reliable forbidding of the mobile phone microphone is realized, and power consumption control and equipment compatibility are considered while the forbidding effect is ensured.

The invention provides a control method and device for a drilling and pole erecting all-in-one machine. The method comprises the steps that the target drilling depth and the pole erecting perpendicularity are set, and a mechanism is started; geological state data and mechanical operation data such as drill rod torque, rotating speed, feeding pressure and rock debris conveying rate are collected in real time; the drilling depth control stability is judged, and an unstable process is triggered when the drilling depth is unstable; in the process, the torque fluctuation frequency and the rock debris conveying abnormal fluctuation are cooperatively analyzed to obtain the geological suitability grade; analyzing the frequency spectrum evolution trend of the vibration signal based on the grade so as to evaluate the mechanical resonance stability; and in combination with the geological suitability grade and the resonance stability, the feeding rate and the lifting speed are dynamically adjusted by adopting fuzzy reasoning, a stable working condition parameter combination is formed, a parameter migration knowledge base is constructed, and a similar parameter template is subsequently matched to generate a cooperative control instruction. According to the technical scheme, self-adaptive parameter migration is realized, and the operation stability and safety are improved.

This invention relates to the field of vehicle seat control technology, specifically disclosing a dynamic compensation method and system for preventing accidental touches of microswitches in vehicle seats. The method includes: synchronously acquiring the triaxial spatial acceleration signal and real-time loop current signal corresponding to each microswitch via hardware triggering; extracting real-time spectral features from the triaxial spatial acceleration signal to obtain real-time spectral features; matching the real-time spectral features with a pre-stored mechanical resonance fingerprint to generate a resonance flag. In actual vehicle operation, this invention determines the resonance state of the microswitch by synchronously acquiring spatial acceleration and loop current signals and comparing the spectral features with a pre-stored mechanical resonance fingerprint. The system combines multi-dimensional information such as road condition type, microswitch service life, and online estimated contact resistance to classify scenarios, and performs layered dynamic compensation calculations under different operating conditions accordingly, removing the interference component caused by vibration from the real-time current.

The invention discloses a servo system mechanical resonance identification method based on a Welch algorithm, and the method is characterized in that a pseudo-random sequence signal is injected into a motor q-axis current instruction of a servo system, the real-time feedback speed of a motor is collected and recorded according to a preset sampling frequency, and finally a real-time feedback speed sequence with the length equal to that of the pseudo-random sequence signal is obtained; carrying out zero equalization, segmentation and windowing processing on the pseudo-random sequence signal and the real-time feedback speed sequence in sequence; according to the new pseudo-random sequence signal and the new real-time feedback speed sequence, the amplitude and the phase of the servo system are obtained through a Welch algorithm, so that a Bode diagram of the servo system is obtained; and finally, the mechanical resonance frequency of the servo system is obtained. The method has the advantages that the problem of resonance point misjudgment risk caused by frequency spectrum burrs of a traditional FFT method is fundamentally solved, and the method has the advantages of being high in noise immunity, high in frequency resolution and small in operand and can be widely applied to resonance monitoring and suppression of numerical control machine tools, robot joints and new energy transmission systems.

The invention relates to the field of sound-driven mobile robots, in particular to a sound-driven method for all-region obstacle crossing rolling wheels. The invention discloses an all-region obstacle crossing rolling wheel sound driving method. The method comprises the following steps that 1, the mechanical resonant frequency of a rolling wheel device working in a required radial vibration mode is determined; 2, a rolling wheel device is built, and excitation signals are applied to the piezoelectric plate 1 # and the piezoelectric plate 2 # at the same time; 3, analyzing the vibration displacement of the rolling wheel and converting the vibration displacement into a traveling wave form; 4, determining an optimal phase difference; and 5, driving the rolling wheel to move. The problems that a sound-driven mobile robot is insufficient in obstacle crossing ability, low in driving efficiency and complex in structure and control can be solved.

The invention provides a dynamic compensation control method and system for a high-speed linear motor, and the method comprises the steps: carrying out the frequency domain analysis of a vibration spectrum through collecting the vibration spectrum data and mechanical structure dynamic parameters of the motor, so as to separate a mechanical resonance component from an electromagnetic harmonic component. And determining a specific frequency band vibration energy value corresponding to mechanical resonance based on the mechanical structure dynamic parameters, taking the energy value and the electromagnetic harmonic component as reward function input together, calculating an optimal compensation voltage value in real time by using an iterative adaptive dynamic programming algorithm, and generating a compensation voltage instruction. Finally, dynamic compensation control over the high-speed linear motor is achieved by applying compensation voltage, and it is ensured that the high-speed linear motor stably operates along the target track. According to the invention, the trajectory control precision and the anti-interference capability of the high-speed linear motor under multi-source disturbance coupling are improved.

The present application relates to the technical field of capacitor testing, and particularly relates to a full working condition equivalent testing system and method for a capacitor used in direct current transmission. The method comprises the following steps: applying a single frequency AC component on the capacitor to obtain a single frequency loss baseline inherent to the capacitor under single frequency excitation; determining harmonic coupling loss according to the single frequency loss baseline; screening out strong interactive harmonic pairs according to the harmonic coupling loss, and re-measuring additional loss under the conditions of respectively applying controlled thermal gradient disturbance and mechanical resonance excitation to calibrate thermal field gain factor and mechanical vibration gain factor; and evaluating total loss under full working condition based on the thermal field gain factor and the mechanical vibration gain factor to obtain full working condition testing data. The present application realizes accurate evaluation and contribution decomposition of the loss characteristics of the capacitor under multiple physical fields and full working conditions.

This invention discloses a urea solution pressure stabilization supply system and control method based on variable frequency delivery. The system includes a urea tank, a variable frequency main pump, a main supply pipeline, a return pipeline, an active hydraulic capacitor, and an electronic control unit. The active hydraulic capacitor, connected in parallel at the end of the main supply pipeline, includes a voice coil motor and a metal bellows. The electronic control unit performs frequency domain decoupling on the total urea injection demand signal. Based on the low-frequency steady-state flow component, it controls the variable frequency main pump to maintain the static background pressure. Based on the high-frequency transient flow component, it controls the voice coil motor to drive the metal bellows to generate displacement to compensate for transient pressure pulsations. This invention determines the crystallization state by detecting the equivalent mechanical impedance. Under non-injection conditions, it drives the metal bellows to generate mechanical resonance to peel off the crystals, and combines this with a low-speed flushing liquid flow to discharge the crystals. In addition, the return urea solution flows through the heat exchange jacket outside the stator for heat dissipation and auxiliary defrosting, realizing the system's pressure stabilization, self-cleaning, and thermal management.

The present disclosure proposes an opto-mechanical pressure measurement system for measuring an ambient pressure level, the system comprising: an optical fiber having a first optical fiber end and a second optical fiber end; an opto-mechanical cavity mounted at the first optical fiber end and composed of a first membrane element and a second membrane element spaced apart from each other, where the first membrane element contacts the first optical fiber end; at least one light beam generating device coupled to the second optical fiber end and configured to generate light beams and direct the light beams onto the opto-mechanical cavity via the optical fiber, each light beam having a particular optical frequency; and a light sensing member coupled to the second optical fiber end, where the at least one light beam generating device is configured to direct a first light beam having a first optical frequency onto the opto-mechanical cavity, where the first light beam is modulated at a modulation frequency within a bandwidth of a mechanical resonance frequency of the second membrane element, wherein the at least one light beam generating device is designed to direct a second light beam having a second optical frequency onto the optomechanical cavity; and wherein the light sensing member is configured to detect a portion of the second light beam reflected by the optomechanical cavity and to determine an ambient pressure around the optomechanical cavity based on a change in the amplitude of oscillation of the second membrane element.

The application discloses a kind of multi-actuator collaborative targeting control method and system of intelligent waist pad.The method is first based on anatomical static weight and muscle collaborative coupling matrix to calculate muscle function importance score, introduce historical habit and hardware state factor to generate integrated control priority;Subsequently, based on priority, construct trapezoidal motion envelope, according to the score dynamically set gradual time window, execute intermittent unloading cycle containing recovery phase;Finally, through staggered start strategy, air line bus pressure monitoring and mechanical resonance suppression algorithm, the action of multiple actuators is finely scheduled.The application realizes the precise hierarchical intervention to the core and auxiliary muscle groups of waist and back, while ensuring physiological comfort, solves the surge current and air line pressure loss problem caused by multiple load concurrency, improves the electrical safety and mechanical stability of system operation.