344 results about "Amplitude control" patented technology

The virtual impedance parameter setting method comprises the following steps: determining control system parameters: filter inductance L, parasitic resistance R, filter capacitance C, rotational inertia J, damping coefficient D, power grid line equivalent inductance Lg and power grid line equivalent resistance Rg; establishing a Lyapunov energy function containing three state variables delta, omega and E by adopting an undetermined gradient method; and a control system parameter is substituted into the Lyapunov energy function to draw an attraction domain when a fault occurs, a stability boundary is determined by adjusting a virtual impedance parameter value, and then a virtual impedance parameter setting boundary value is obtained. Under single voltage loop amplitude control, a phase angle of an active link and a voltage dynamic process of a reactive link are considered at the same time, an overall Lyapunov energy function of the system is formed, and a virtual impedance parameter setting method is provided, so that when a superior power grid is disturbed, a network-forming type energy storage power station can realize the optimal control of the system within a current limiting range. And the grid-connected point voltage is actively and effectively supported.

The invention discloses a control method and device of network construction type equipment, a controller, equipment and a medium, and belongs to the technical field of wind power. The method comprises the following steps: based on impedance from a grid-side converter to a power grid, a preset inertia time constant and a preset angular velocity parameter, obtaining a damping coefficient of an active power synchronization ring by using second-order system characteristics of the active power synchronization ring; performing active power synchronization operation according to the damping coefficient, the inertia time constant and the control parameter of the active power synchronization loop to obtain an internal potential phase of the network construction type equipment; performing reactive power closed-loop control operation according to the control parameters of the reactive power loop to obtain an internal potential amplitude of the network construction type equipment; and controlling the operation of the grid-side converter by using a PWM signal generated based on the internal potential phase and the internal potential amplitude. According to the embodiment of the invention, the safety and reliability of the power system can be improved.

The invention discloses a multi-stage collaborative protection simulation verification method for a subway power supply system, and the method comprises the steps: building an integrated simulation model which comprises an automatic reclosing switch, a spare power automatic switching switch and an automatic change-over switch based on an MATLAB / Simulink platform, and especially carrying out the precise modeling of an advanced compensation function of ATSE. The model is verified by a power-off test, a simulation result and actually measured data are highly consistent in voltage recovery time, an error of advanced compensation action time of ATSE is less than 2ms, and dynamic characteristics of an actual system are accurately reproduced. Model simulation shows that the advanced compensation strategy of the ATSE can effectively control the voltage sag amplitude within 15%, the power supply reliability of the system is remarkably improved, and through strict'simulation-actual measurement 'double-track verification, the model accurately reproduces the dynamic characteristics of the actual system, and shows remarkable advantages in the aspect of improving the power supply reliability.

The invention discloses a string type network energy storage converter control method, and the method comprises the steps: enabling an energy storage converter to take an SOC mean value as the feedback of an SOC equalization ring, and obtaining an SOC equalization ring output value; superposing the output value of the secondary frequency modulation ring, the output value of the SOC equalization ring and the output value of the primary frequency modulation ring as an active given value, and obtaining a reference value of the frequency through a VSG active frequency control ring; taking the output value of the secondary voltage regulating ring as a reactive given value, obtaining a reference value of a VSG reactive amplitude control ring through the primary voltage regulating ring, and obtaining a reference value of voltage through the amplitude control ring; inputting the obtained reference value of the frequency and the reference value of the voltage into a voltage and current double closed loop to obtain an output signal for following the reference values, and further generating a driving signal for controlling a switching tube of the energy storage converter; according to the invention, the communication load rate can be reduced, when large frequency and voltage fluctuation occurs, the voltage and frequency stability problem can be independently solved, the self-recovery control of secondary regulation is realized, and the frequency and the output voltage of the system are dynamically regulated in real time.

The invention relates to the technical field of detection, in particular to a magnetic deflection control system and a scanning electron microscope. The magnetic deflection control system provided by the invention comprises a digital-to-analog conversion module, a control module, an amplification factor modulation module and an output module, the control module comprises a scanning deflection circuit and a scanning amplitude control circuit; the input end of the scanning deflection circuit and the input end of the scanning amplitude control circuit are electrically connected with the output end of the digital-to-analog conversion module. The output end of the scanning deflection circuit is electrically connected with the input end of the output module. The output end of the scanning amplitude control circuit is electrically connected with the input end of the amplification factor modulation module, and the output end of the amplification factor modulation module is electrically connected with the input end of the output module; the output end of the output module outputs a corresponding magnetic field to adjust the scanning path of the electron beam. According to the magnetic deflection control system, the problem that the imaging quality of a scanning image finally obtained by the scanning electron microscope is poor due to the fact that noise exists in a signal for controlling scanning deflection is solved.

The invention relates to the technical field of cooling system control, in particular to a ship central cooling water system frequency conversion control simulation analysis system, which comprises a dynamic load prediction module for predicting cooling load requirements of ship main engine and auxiliary engine equipment in different time periods in the future in real time; the load grading control module is used for dividing loads into a plurality of grades, including light load grades, medium load grades and heavy load grades, and generating multi-layer frequency conversion control strategies for cooling water requirements under different load grades; the amplitude control module optimizes the variation amplitude of the rotating speed of the water pump; the load peak value regulation and control module is used for carrying out short-time overclocking control on the water pump when the load fluctuates violently within a short time; and the load distribution simulation module is used for simulating behaviors and responses of the cooling system under different load conditions by performing simulation analysis on distribution of loads of all cooling loops in the ship cooling water system. According to the invention, it is ensured that the equipment obtains sufficient cooling support under a high-load condition, and the load adaptive capacity and the operation efficiency of the cooling system are effectively improved.

The invention provides a segmented adaptive gain-based short-wave band amplitude and phase control device and method, and relates to the field of short-wave intelligent control. The method comprises the following steps: performing coupling detection processing on N paths of input short-wave signals to obtain coupled short-wave signals and power values of the coupled short-wave signals; based on the coupled short-wave signal and the power value of the coupled short-wave signal, calculating adjustment parameters through a preset adaptive segmented multi-target differential evolution algorithm, wherein the adjustment parameters comprise a frequency correction parameter, a phase adjustment parameter and an amplitude control voltage; adjusting the coupled short-wave signal based on the adjustment parameter to obtain a target short-wave signal; and detecting whether the target short wave signal meets a preset output condition, and if the target short wave signal meets the preset output condition, coupling the target short wave signal to output a radio frequency output signal. Through the scheme, the communication quality is improved.

The invention discloses a photovoltaic network construction control method and device based on voltage amplitude self-adaptive regulation and control. The method comprises the following steps: acquiring an intermediate-stage direct-current voltage in a working process of a photovoltaic panel; the DC / DC module operates in an MPPT tracking mode when the intermediate-stage DC voltage is lower than a set threshold value, and is switched to a constant-voltage mode when the intermediate-stage DC voltage is lower than the set threshold value to limit photovoltaic output; and the DC / AC module adopts a modification droop control method based on voltage amplitude self-adaptive regulation and control, an amplitude control item is introduced in amplitude control, and the output amplitude of the DC / AC module is adjusted in real time according to the intermediate-stage DC voltage deviation, so that the photovoltaic converter can adaptively adjust the output voltage amplitude. According to the invention, when the photovoltaic output of the photovoltaic converter is sufficient, the AC voltage is independently constructed, and the network construction control is realized; and when the photovoltaic output is insufficient and cannot meet the load demand, the photovoltaic converter adaptively adjusts the amplitude of the output voltage and stabilizes the frequency of the output voltage at the same time.

The invention discloses a low-sidelobe antenna based on double-metasurface amplitude and phase independent regulation and control. The antenna structure comprises a metasurface 1 and a metasurface 2. The metasurface 1 and the metasurface 2 comprise a plurality of metasurface units; the metasurface 1 is a phase modulation plane, comprises a phase regulation and control unit and is decoupled with the amplitude control function of the amplitude filtering plane; the metasurface 2 is an amplitude filtering plane and comprises an amplitude regulation and control unit, and the modulation process is decoupled from phase regulation and control of the metasurface 1; the phase regulation and control unit and the amplitude regulation and control unit comprise three metal layers and two dielectric layers; the first layer, the third layer and the fifth layer from bottom to top are metal layers, and the second layer and the fourth layer are dielectric layers. Through the design of the double-layer metasurface structure, completely independent operation of the phase regulation and control layer and the amplitude modulation layer is achieved, the technical contradiction that amplitude and phase parameters in a traditional single-layer metasurface are mutually restrained is avoided, and the core technical problem that the side lobe level of a transmission antenna is too high is solved cooperatively.

The invention relates to the technical field of gyroscope control and detection, in particular to a method, a system and equipment for measuring the angular velocity of a hemispherical resonator gyroscope. Establishing a control model of the hemispherical resonator gyroscope; standing the gyroscope on a test plane, applying a control voltage to the excitation electrode, and measuring the output of the gyroscope to enable the gyroscope to be in a normal working state; a control force is applied to an angle control loop of the hemispherical resonator gyroscope, so that the vibration mode angle moves periodically, and the hemispherical resonator gyroscope is in a rotation modulation state; disturbance is applied to the amplitude control loop, and real-time force application scale estimation is obtained according to a force application scale model; and real-time external angular velocity input is obtained according to real-time force application scale estimation. According to the invention, the applied force scale of a related control loop is detected in real time, and the applied angular velocity input is eliminated, so that the external angle change can be tracked, and the technical effect of improving the precision of the resonant gyroscope is achieved.

The utility model provides a heading machine. The heading machine comprises a machine body; the first rotating part is arranged at the front end of the machine body; the cutting assembly is connected with the first rotating part and can swing up and down under the action of the first rotating part; the first detection assembly is connected with the first rotating part and is used for detecting the lifting amplitude of the cutting assembly; the control assembly is connected with the first detection assembly and used for determining the final lifting amplitude of the cutting assembly according to the detection result of the first detection assembly; wherein the first detection assembly comprises a first gear which is connected with the first rotating part and can synchronously rotate along with the first rotating part; the second gear is meshed with the first gear; the first angle sensor is connected with the second gear and used for converting the rotation angle of the second gear into an electric signal and sending the electric signal to the control assembly. The heading machine can stably measure the lifting amplitude of the cutting assembly of the heading machine with high precision.

The invention discloses a terahertz phase shifter chip based on a magnetic coupling line fine adjustment technology, the magnetic coupling line fine adjustment technology is applied to a magnetic coupling line distributed attenuator, and a magnetic coupling line is added below a transmission line of the magnetic coupling line distributed attenuator. And a switching transistor array and a capacitive compensation transistor are respectively added at two ends of the magnetic coupling line. A vector synthesis type structure is adopted, the magnetic coupling line fine adjustment technology is innovatively provided and applied to the magnetic coupling line distributed attenuator, compared with a traditional distributed attenuator, the magnetic coupling line distributed attenuator has the advantages of being higher in precision and smaller in attenuation stepping, the occupied area is the same, the phase shifting control function of the phase shifter is achieved based on the attenuator, and the application range is wide. Finally, the phase of an output signal is controlled to realize a phase control function of 5.625-degree phase shift stepping in a full 360-degree range, and an amplitude control function in a 3dB range can be realized.

The present application relates to the technical field of data processing. Disclosed are a multi-nuclear imaging radio frequency power amplifier and a multi-nuclear magnetic resonance imaging hardware system. The multi-nuclear imaging radio frequency power amplifier comprises: a radio frequency signal input end, a radio frequency switch, a pre-compensation circuit, a voltage-controlled attenuator, a voltage-controlled phase shifter, a broadband radio frequency power amplifier, a broadband directional coupler and a radio frequency signal output end; a first output abnormality protection control circuit; a second output abnormality protection control circuit; an amplitude control circuit; and a phase control circuit. By means of the multi-nuclear imaging radio frequency power amplifier in the present invention, nonlinear correction can be performed on the amplitude and phase of a broadband radio frequency power amplifier, such that the broadband radio frequency power amplifier keeps meeting the requirements for high linearity and high power at an operating frequency point of a corresponding nuclide, so as to ensure the linear relationship between input and output signals of a radio frequency power amplifier and adequate signal strength, thereby avoiding the generation of artifacts due to signal distortion, and ensuring the accuracy and clarity of magnetic resonance imaging.

The invention discloses a terahertz metasurface capable of realizing independent control of amplitude and phase. The terahertz metasurface comprises a terahertz transparent substrate; the metasurface unit array is periodically arranged in a first direction, and each metasurface unit comprises a first structural layer which is of a dielectric resonance structure and is used for providing a phase regulation and control function; the second structural layer is a thin film formed by an adjustable absorption material and is used for providing an amplitude regulation and control function; the second structure layer is provided with an independent electrode for adjusting the transmission amplitude; a first dielectric isolation layer is arranged between the terahertz transparent substrate and the first structure layer and is used for reducing an electromagnetic coupling effect; the first structural layer and the second structural layer are stacked in the vertical direction through a three-dimensional processing technology, a second dielectric isolation layer is arranged between the first structural layer and the second structural layer, and the second dielectric isolation layer is a silicon dioxide SiO2 or silicon nitride Si3N4 film with the thickness D ranging from 100nm to 1000nm.

The invention belongs to the technical field of radio frequency communication, and particularly relates to a device, application and method for simulating antenna array radio frequency signals in a Wattson-Watt direction finding system, and the device comprises a first radio frequency switch, a power distribution unit, a phase control unit, an amplitude control unit and a plurality of second radio frequency switches which are connected in sequence. The first radio frequency switch is used for selecting corresponding signal channels for received radio frequency signals according to different frequency bands; the power distribution unit comprises a signal processing module and a signal decomposition module corresponding to each signal channel, and outputs radio frequency signals of an SN path, an EW path and a CR path; the phase control unit is used for performing phase control on the three paths of radio frequency signals respectively; the amplitude control unit is used for performing amplitude control on the three paths of radio frequency signals with required phases; the second radio frequency switch is used for outputting a radio frequency signal required by the directional machine and replaces a radio frequency circuit of an antenna array.

The invention discloses a crane falling and amplitude variation control method and device, electronic equipment and a storage medium. The crane falling and amplitude changing control method comprises the steps that current working condition information of a crane is obtained; on the basis of a pre-generated four-dimensional feed-forward control model, a feed-forward control current value is calculated according to the current working condition information, and the four-dimensional feed-forward control model represents the mapping relation between the working condition information and the main arm descending valve control current of the crane in the constant-speed descending state; the actual descending speed of the main arm of the crane is obtained and compared with the set expected descending speed, and a closed-loop correction current value is calculated through a closed-loop control algorithm based on the speed error; and superposing the feedforward control current value and the closed-loop correction current value to obtain a total control current, and outputting the total control current to a main arm descending valve of the crane so as to control the descending speed of the main arm of the crane. According to the invention, the descending process of the main arm is stable and constant in speed, and the stability and safety of the hydraulic control crane in the amplitude variation action are improved.

A high-gain automatic phase modulation quartz vibrating beam accelerometer control circuit comprises a feed-through suppression module, the feed-through suppression module and a quartz vibrating beam resonator form a parallel resonance unit, and the output of the parallel resonance unit is connected with the input of a front-end amplification module. The output of the front-end amplification module is connected with the input of the high-pass filtering module and the first input of the automatic phase control module, the output of the high-pass filtering module is connected with the first input of the dynamic phase shift module, and the second input of the dynamic phase shift module is connected with the output of the automatic phase control module. The output of the dynamic phase shift module is connected with the input of the differential driving module through the low-pass filtering module, the square wave shaping module and the amplitude control module; the output of the differential driving module is connected with the input of the feed-through suppression module, the driving end of the quartz vibrating beam resonator and the second input of the automatic phase control module; according to the invention, low-noise driving of the high-impedance quartz vibrating beam is realized, and the loop phase error is dynamically compensated to improve the stability and resolution of the accelerometer.

The invention discloses a modularized microwave signal source, which belongs to the technical field of microwave communication and comprises a radio frequency front-end module, a lower variable intermediate frequency and mixing filter module, an upper variable intermediate frequency and mixing filter module, an amplitude control module and a power supply control board for supplying power to and controlling the modules in a distributed manner, each module is arranged in an independent cavity with an electromagnetic shielding structure; the modular microwave signal source adopts a secondary mixing superheterodyne scheme as a basic microwave link, and adopts a primary mixing scheme as a millimeter wave extension link. The modularized microwave signal source is divided into a plurality of standardized modules which can be independently detached and have subdivided functions, so that the problems of difficulty in maintenance, fixed design and high cost of a traditional high-integration-level microwave component are solved, and the high performance, high maintainability, strong reusability and wide-frequency-band coverage effect of the microwave signal source are realized.

The invention relates to a pulse width modulation silicon resonant pressure sensor closed-loop circuit and a debugging method, the pulse width modulation silicon resonant pressure sensor closed-loop circuit comprises a resonant sensor, a current and voltage conversion circuit, a comparator circuit, an amplitude control circuit and a pulse width modulation generation circuit, and the comparator circuit converts the amplified frequency signal into a square wave signal, generates a pulse signal through the pulse width modulation generation circuit, and is connected to the driving end of the resonator to generate a driving signal to form a closed-loop system. Wherein the amplitude control circuit is used for detecting the signal amplitude of the sensor and generating a control signal to adjust the impedance of the pulse width modulation generation circuit so as to adjust the pulse width of the driving signal and finally realize the stable closed loop of the sensor. According to the method of the closed-loop circuit based on pulse width modulation, the structure of the closed-loop driving circuit is optimized, the number of components is reduced, the pull-in risk is reduced, and the stability of the closed loop is improved.

A microwave / millimeter wave B / J type power amplifier comprises a driving amplification and harmonic generation circuit and an amplification circuit, a radio frequency input signal RFin is input through the signal input end of the driving amplification and harmonic generation circuit, and the signal output end of the driving amplification and harmonic generation circuit is connected with the signal input end of the amplification circuit. The amplification circuit outputs the amplified radio frequency signal; according to the multi-stage power amplifier, fundamental wave signal amplification, harmonic wave generation and harmonic wave phase and amplitude control are carried out at the same time through the pre-stage driving amplifier of the multi-stage power amplifier, fundamental waves and harmonic waves are input into the main amplifier at the same time, and waveform control is achieved so as to improve the efficiency of the power amplifier; the phase difference and the amplitude proportion of the second harmonic and the fundamental wave are controlled through the driving amplifier, the efficiency of the B / J type power amplifier can be improved, the maximum efficiency can reach 95.2%, the normalized voltage peak value is reduced compared with a traditional B / J type power amplifier, and the B / J type power amplifier has the advantages of being simple in structure, greatly improving the efficiency, improving the circuit reliability, and being small in area and low in cost.

The invention provides a fast differential frame synchronization method under a burst transmission system, which comprises the following steps: a receiver reduces the sampling rate of a burst transmission sequence to four times of a symbol rate, detects the timing error of a down-sampling sequence, calculates an integer parameter and a fraction parameter based on a timing error result, and performs frame synchronization according to the integer parameter and the fraction parameter; then, a cubic interpolation filter is used for calibrating timing errors and recovering a correct data sequence, a differential frame synchronization method which is insensitive to signal amplitude and suitable for any phase deviation is used for searching a frame header position, and whether the size of a correlation peak value is larger than a set threshold value or not is judged; if yes, timing synchronization and frame synchronization are completed; and if not, returning to continue to calculate the timing error. The method is suitable for a burst transmission system, is different from a traditional frame synchronization method, does not need to carry out frequency difference estimation, amplitude control and carrier synchronization in advance, and can quickly realize timing synchronization and frame synchronization, so that the synchronization time is shortened.

The invention discloses an ultrasonic energy adjusting device, an ultrasonic energy adjusting method and ultrasonic treatment equipment. The ultrasonic energy adjusting device comprises an adjusting control circuit, a voltage-controlled direct-current power supply circuit and an inverter output circuit, the adjusting control circuit is used for acquiring a target amplitude signal, a target frequency signal, a target period signal and a target duty ratio signal, and outputting an amplitude control signal to the voltage-controlled direct-current power supply circuit according to the target amplitude signal; a driving control signal is output to the inversion output circuit according to the target frequency signal, the target period signal and the target duty ratio signal; the voltage-controlled direct-current power supply circuit is used for generating a direct-current voltage signal output to the inversion output circuit according to the amplitude control signal; the inverter output circuit is used for generating an ultrasonic driving signal output to the ultrasonic transducer according to the direct-current voltage signal and the driving control signal so as to control the amplitude, frequency, period and duty ratio of ultrasonic energy output by the ultrasonic transducer, and multi-dimensional fine control over the ultrasonic energy is achieved.

The invention provides a positioning method of a cutting assembly of a heading machine and the heading machine. The heading machine comprises a machine body; the first rotating part is arranged at the front end of the machine body; the cutting assembly is connected with the first rotating part and can swing up and down under the action of the first rotating part; the first detection assembly is connected with the first rotating part and is used for detecting the lifting amplitude of the cutting assembly; the control assembly is connected with the first detection assembly and used for determining the final lifting amplitude of the cutting assembly according to the detection result of the first detection assembly; wherein the first detection assembly comprises a first gear which is connected with the first rotating part and can synchronously rotate along with the first rotating part; the second gear is meshed with the first gear; the first angle sensor is connected with the second gear and used for converting the rotation angle of the second gear into an electric signal and sending the electric signal to the control assembly. The heading machine can stably measure the lifting amplitude of the cutting assembly of the heading machine with high precision.

The invention provides an ultra-wideband amplitude-phase independent reconfigurable metasurface based on single PIN tube regulation and control. The ultra-wideband amplitude-phase independent reconfigurable metasurface is formed by arranging metasurface units (hereinafter referred to as "units") with only one PIN diode. A PIN diode is integrated on a micro-strip transmission circuit on the back surface of the unit, so that the unit has the characteristic that the amplitude and phase of the ultra-wideband are independently adjustable. The continuous control of the reflection amplitude and the 1-bit (1-bit) control of the reflection phase can be realized by continuously changing the voltage at the two ends of the PIN diode. Different amplitude regulation and control and phase regulation and control are carried out on units in the reflection array, and the functions of low scattering, beam deflection, beam focusing, target simulation and the like can be achieved. The invention has the advantages of ultra-large bandwidth, independent and controllable electromagnetic reflection amplitude and phase, low profile, low manufacturing cost, easy system integration and the like, and has important application prospects in the field of radar electromagnetic target characteristic simulation.

The invention provides a self-synchronizing voltage source string type photovoltaic inverter system and a control method. The self-synchronizing voltage source string type photovoltaic inverter system comprises an internal potential frequency control module, a power angle rapid adjustment control module, an internal potential amplitude control module, a dual-mode parallel-competitive dominant control module, a bridge arm modulation voltage control module and an internal potential amplitude limiting control module. The dual-mode parallel-competitive dominant control module is respectively connected with the internal potential frequency control module, the power angle rapid adjustment control module and the bridge arm modulation voltage control module; the bridge arm modulation voltage control module is connected with the internal potential amplitude limiting control module; and the internal potential amplitude limiting control module is connected with the internal potential amplitude control module. According to the invention, seamless smooth switching between a limited power working mode and a maximum power tracking working mode is realized, so that self-synchronizing voltage source control of the string type photovoltaic inverter is realized in a full operation mode.

Systems and methods are disclosed for a multiphase clock generation. An example method includes facilitating, by a phase interpolator (PI) circuit comprising a plurality of PIs, transfer of information across one or both of a transmit (TX) lane or a receive (RX) lane, wherein the transfer of information is based on a clock timing. The PI circuit receives, from a clock-and-data recovery (CDR) circuit, a plurality of input clock phases. The CDR circuit comprises a centrally located phase-locked loop (PLL) circuit and a plurality of multiphase generators. In some embodiments, each multiphase generator of the plurality of multiphase generators is adjacent to a respective PI of the plurality of PIs. Based on the plurality of input clock phases, the PI circuit adjusts, the clock timing for the transfer of information.

A block type automatic circle splicing mechanism comprises a base, a rotating assembly arranged on one side of the base and a plurality of circle splicing assemblies arranged on one side of the rotating assembly at intervals. The rotating assembly comprises a rotating motor and a rotating disc arranged at the output end of the rotating motor. A plurality of inclined grooves are formed in the edge position of the rotating disc at intervals, and the inclined grooves and the radius of the rotating disc are arranged in a crossed mode. And the plurality of rollers are respectively positioned in the plurality of chutes and are in clearance contact with the inner side walls of the chutes. According to the mechanism, the rotating disc is driven by the rotating motor to rotate, so that the circle splicing operation of the coil stators can be completed, the waste of resources is greatly reduced, and the cost is saved. And the closing degree of each U-shaped sliding block is controlled by the rotation amplitude of the turntable, so that the circle splicing operation of various coil stators with different specifications and sizes can be completed, and the adaptability of the mechanism is improved.

The invention discloses a multi-channel high-isolation low-power-consumption array receiving module. A power supply and control circuit is connected with a local oscillator amplification power division circuit; the power supply and control circuit is used for converting an externally accessed power supply into a power supply voltage required by the receiving module, and controlling the receiving frequency conversion circuit through an external control instruction to realize the functions of amplitude control, band-pass filter group switching, polarization selection and the like; the receiving frequency conversion circuit comprises a plurality of receiving frequency conversion links, and each receiving frequency conversion link receives the first local oscillator signal and the second local oscillator signal sent by the local oscillator amplification power division circuit and is used for converting a radio frequency signal input into the receiving frequency conversion link into an intermediate frequency signal to be output; the local oscillator amplification power division circuit is used for dividing the local oscillator signal into a first local oscillator signal and a second local oscillator signal, and inputting the first local oscillator signal and the second local oscillator signal into the receiving frequency conversion link. The circuit has the advantages of high circuit integration degree, small size, compact structure, excellent performance, high reliability and the like.

The invention discloses an antenna control method, system and device and a computer readable storage medium, and relates to the technical field of communication, and the method comprises the steps: obtaining a target position of a terminal device; generating mechanical platform control information and beam forming control information according to the target position; performing angle control on the mechanical platform according to the mechanical platform control information; performing angle control on the beam forming chip according to the beam forming control information; wherein the mechanical platform is used for carrying out horizontal rotation and / or pitching rotation on the antenna array; and the beam forming chip is used for performing phase control and / or amplitude control on the antenna array. According to the invention, large-range coarse adjustment of the horizontal angle and / or the pitching angle of the antenna array can be carried out by means of the mechanical platform, and small-range fine adjustment of the antenna array can be carried out by means of the beam forming chip, so that the antenna array can flexibly send beams to the terminal equipment, the beam width limitation of a small-size array is broken through, and the antenna array can be flexibly and accurately adjusted. And the signal quality of the terminal equipment is improved.

In examples, an electronic device comprises an oscillator circuit configured to provide an output signal and a controller coupled to the oscillator circuit. The controller is configured to receive first and second target rates; dynamically adjust a frequency accuracy of the output signal based on the first target rate; and dynamically adjust an amplitude of the output signal based on the second target rate.