219 results about "Analog control" patented technology

The invention relates to the technical field of power supply equipment power control. The load power track simulation control method comprises the steps of obtaining voltage information and current information of target power supply equipment, determining power deviation information and a dynamic target voltage range generated on the basis of a preset load behavior prediction model, constructing a combined regulation and control weight vector on the basis of the power deviation information, and obtaining a load power track simulation control result. According to the combined regulation and control weight vector and the dynamic target voltage range, constructing a target power evolution trajectory curve by using a physical response inversion mechanism, executing time discretization processing on the target regulation and control trajectory curve, extracting voltage change values and current change values corresponding to each time step, and calculating the target power evolution trajectory curve; and combining the voltage change value and the current change value according to a time sequence to form a control parameter sequence, and generating an analog control instruction matched with the target power evolution trajectory curve according to the control parameter sequence. The method has the effect of improving the real-time response capability of the power supply equipment under complex working conditions.

The invention discloses a pulsed neutron generator control system based on LabVIEW, and the system comprises a neutron generator industrial personal computer which operates a virtual human-computer interaction interface developed based on LabVIEW; the console core board carries a DSP main control chip and is embedded into a real-time operating system; the driving sampling board is connected with the console core board and is integrated with a signal conditioning circuit; the neutron generator industrial personal computer communicates with the console core board through a Modbus protocol, and controls and drives the sampling board to output control signals of the three independent power supply ion sources, the storage and the acceleration pole to the neutron tube; wherein the console core board generates three paths of PWM signals with the PWM frequency of 2.5 kHz and the step length of 8191, and the three paths of PWM signals are converted into analog control signals through the driving sampling board. According to the control system, the PWM control precision is greatly improved, the voltage control precision is improved to 0.012% (100% higher than that of a conventional scheme) through the combination of the 8191 step length (13-bit resolution) and the 2.5 kHz frequency, and the neutron yield fluctuation is controlled within + / -1.5%.

The invention provides a delay compensation control method for a double-vibrator wave energy conversion device, which comprises the following steps of: performing numerical modeling and hydrodynamic analysis on the double-vibrator wave energy conversion device, establishing a time domain motion equation of the double-vibrator wave energy conversion device, and introducing a time delay function into the time domain motion equation to simulate control signal transmission delay; simulating the execution delay of the brake by using a partial differential equation; establishing a state-space equation of the device, replacing a convolution term of the time-domain motion equation with the state-space equation, and calculating to obtain a motion state of the device; a Hamiltonian function is defined to convert a constrained optimization problem into an unconstrained optimization problem, and the Hamiltonian function is solved to obtain an optimal control criterion considering control delay so as to realize maximization of energy capture under the optimal control criterion. According to the method, the operation characteristics of a physical system are truly reflected by introducing control delay, so that the locking control method is effectively implemented in an actual physical device, and the energy capture efficiency of a wave energy conversion device and the reliability of system operation are effectively improved.

The invention relates to the technical field of high-voltage VI modules, and particularly discloses a high-voltage VI source module for SOC testing, which comprises an output stage module, a sampling module and a control and conversion module, the output stage module is constructed by adopting discrete high-voltage power devices, supports four-quadrant operation, and can realize flexible output and absorption of voltage and current; the sampling module is composed of a voltage sampling unit and a current sampling unit which respectively monitor voltage and current signals of the output stage in real time. The control and conversion module comprises a control unit and a digital-to-analog conversion unit; the digital-to-analog conversion unit is responsible for converting a digital control signal into an analog control signal to drive the output stage and converting analog voltage and current signals collected by the sampling module into digital feedback signals; and the control unit receives the digital feedback signals and adjusts the output of the digital-to-analog conversion unit in real time through a closed-loop control algorithm, so that high-precision and high-stability control on the output-stage voltage or current is realized.

According to an embodiment, a phased-locked loop (PLL) circuit, within a gyroscope system, generates demodulation signals. It includes a phase frequency detector receiving gyroscope output, which compares a reference signal with a feedback signal to produce an error signal. A charge pump then converts this error into a first analog control signal. A programmable clamp circuit refines this into a second analog control signal. A voltage-controlled oscillator uses the second signal to produce an output signal at a controlled frequency determined by the clamp circuit. A frequency divider sends a comparison frequency signal back to the detector, completing the loop.

The invention discloses a semiconductor laser double-layer temperature control system, which is characterized in that firstly, digital PID temperature control is carried out on an external heat sink of a laser, the set voltage of an outer thermistor and an outer slide rheostat is converted by an ADC conversion circuit and then is sent to an STM32, and control information is sent to a DAC conversion circuit after digital PID operation; and the DAC conversion circuit outputs a control signal to a CTLI pin of the MAX1978 after analog-to-digital conversion, and generates a driving current to control an outer TEC, thereby realizing coarse stabilization of the external temperature of the laser. The inner layer adopts a simulation PID control mode, an inner layer MAX1978 chip reads voltage values of a thermistor and a slide rheostat in the laser and then carries out simulation PID network operation, current is output to drive a TEC in the laser, and therefore high-stability temperature control of the laser is achieved.

An analog electronic component for control of an aerosol delivery device is provided. The aerosol delivery device includes a heating element, a reservoir that retains aerosol precursor composition, and an analog electronic component that in response to user input, and independent of a digital processor, is configured to direct a constant current to the heating element and thereby cause the heating element to activate and vaporize components of the aerosol precursor composition in response to user input, and a user input interface through which the user input is receivable.

The invention relates to the technical field of switching power supply analog control, in particular to a control method and system for a small-duty-ratio BOOST module based on digital control, and the method comprises the following steps: S1, carrying out the sampling of the equal-proportion reduced output voltage of an operational amplifier through an ADC analog-to-digital converter, processing the sampled voltage value through a filtering algorithm to obtain an output voltage VO; and S2, carrying out calculation processing on the output voltage VO through a PID control algorithm, and obtaining an expected output voltage through a fixed-frequency adjustment duty ratio PWM and a fixed-duty ratio frequency modulation PFM. Efficient and stable voltage boosting is achieved through double-closed-loop digital control, dynamic response and anti-interference capacity are achieved, the core lies in collaborative design of power conversion and a control strategy, input direct-current voltage is boosted to higher stable output voltage, a double-closed-loop (voltage loop + current loop) control strategy is adopted, and the voltage boosting effect is achieved. And closed-loop adjustment is realized by combining PWM driving and ADC sampling.

According to an embodiment, a phased-locked loop (PLL) circuit, within a gyroscope system, generates demodulation signals. It includes a phase frequency detector receiving gyroscope output, which compares a reference signal with a feedback signal to produce an error signal. A charge pump then converts this error into a first analog control signal. A programmable clamp circuit refines this into a second analog control signal. A voltage-controlled oscillator uses the second signal to produce an output signal at a controlled frequency determined by the clamp circuit. A frequency divider sends a comparison frequency signal back to the detector, completing the loop.

The embodiment of the invention provides a converter mode switching control circuit and method, and the circuit comprises a voltage regulation unit circuit, a Buck bridge arm unit control circuit, a Boost bridge arm unit control circuit, and a mode selection circuit. The voltage regulation unit circuit is used for converting an output voltage Vo into an error signal Verror and sending the error signal Verror to the Buck bridge arm unit control circuit and the Boost bridge arm unit control circuit respectively; the sawtooth wave generator outputs a signal vsaw, sends the signal vsaw to the Buck bridge arm unit control circuit, and outputs a Buck bridge arm duty ratio Dy1; the sawtooth wave generator outputs a signal vsaw, sends the signal vsaw to the Boost bridge arm unit control circuit, and outputs a Boost bridge arm duty ratio Dy2; and the mode selection circuit is used for indicating a Boost mode, a Buck mode and a Buck-Boost mode. The invention provides digital and analog control of converter three-mode smooth switching.

The invention belongs to the technical field of photoelectric fusion integrated circuits, and particularly discloses a parallel PWM expansion high-precision programmable DAC structure. The adjusting module is used for adjusting the thermo-optical phase shifter according to the received digital control signal; the DAC structure specifically comprises a pulse width modulation signal generator and a current source array, wherein the pulse width modulation signal generator is used for acquiring a low-order code element from the digital control signal to generate a pulse width modulation signal, and sending the pulse width modulation signal to the current source array; wherein the current source array is used for acquiring a high-order code element from the digital control signal to generate a high-order analog signal; a low-order analog signal is generated based on the pulse width modulation signal; and the processor is also used for weighting and accumulating the low-order analog signal and the high-order analog signal to obtain an analog control signal and outputting the analog control signal. The DAC structure is high in precision and simple in structure.

The present invention relates to the field of intelligent regulation technology, and particularly to a constant temperature intelligent valve control system and its control method. The method includes the following steps: receiving the DDC analog control signal in real time through the constant temperature intelligent valve and performing vibration-free judgment in the standby mode and valve adjustment control analysis to generate a valve position opening adjustment control mode and a valve flow adjustment control mode; monitoring the supply and return water temperatures of the constant temperature intelligent valve in real time and calculating the valve temperature difference to obtain the measured temperature difference of the intelligent valve; performing valve adjustment control logic response analysis on the constant temperature intelligent valve to generate a basic regulation mode and a constant regulation mode of the intelligent valve; obtaining the set temperature difference of the intelligent valve and the set return water temperature of the intelligent valve and performing basic regulation processing and constant regulation processing on the constant temperature intelligent valve to execute the corresponding intelligent valve regulation control work. The present invention can automatically adjust the control mode according to actual needs, and has high adaptability, accuracy and energy saving performance.

The invention relates to a level control system and method for radio frequency signal output power, belongs to the technical field of signal processing, and solves the problem that an existing power compensation algorithm is complex and unstable. In the system, a radio frequency amplifier is used for performing power amplification on a radio frequency signal input according to set power; the electric control attenuator is used for adjusting the power of the input radio frequency signal according to the control voltage output by the feedback circuit; the directional coupler is used for outputting a radio frequency signal after power regulation through the straight-through port, and inputting the radio frequency signal to the first microwave detector to obtain output power; coupling the radio frequency signal after power regulation to a feedback circuit through a coupling port; a digital PID control module in the feedback circuit is used for acquiring an analog control voltage according to a radio frequency signal, and a feed-forward control module is used for acquiring a feed-forward control voltage according to power pre-amplitude-stabilizing data corresponding to set power; and the analog control voltage and the feed-forward control voltage are added to obtain a control voltage output by the feedback circuit. And the output power can be quickly and stably adjusted.

The utility model provides a radio frequency power amplifier and a radio frequency chip. The radio frequency power amplifier comprises an amplifier, a first adjustable attenuation circuit, a second adjustable attenuation circuit and a first capacitor. Compared with the prior art, the first adjustable attenuation circuit and the second adjustable attenuation circuit are additionally arranged at the input end of the amplifier, input attenuation protection is achieved by adopting a simple circuit structure, the number of used devices is small, and the chip area cost can be effectively saved. Meanwhile, the input attenuation amount of the first adjustable attenuation circuit and the second adjustable attenuation circuit can be flexibly adjusted through a digital control bit and an analog control voltage, and free adjustment of different attenuation amounts at different temperatures is achieved; meanwhile, the input end of the amplifier is simple in structure, complex feedback loop control is avoided, the response speed is higher, and deterioration of the radio frequency performance of an amplifier channel is smaller.

The invention discloses a hybrid control variable gain amplifier without a decoder and a circuit of the hybrid control variable gain amplifier. The hybrid control variable gain amplifier comprises an OPA amplifier and two CMOS arrays connected with the OPA amplifier through a switch C1 and a switch C2. The hybrid control variable gain amplifier is switched from an analog control mode to a digital control mode by closing the switches C1 and C2. According to the circuit of the hybrid control variable gain amplifier without the decoder, circuits of two groups of CMOS arrays are respectively connected with a circuit of an OPA amplifier through a switch C1 and a switch C2; a circuit of the CMOS array is formed by connecting circuits of n + 1 gain blocks in parallel. A decoding module is not needed, delay can be effectively reduced in application needing extremely high-speed response, and compared with a traditional hybrid control variable gain amplifier, the hybrid control variable gain amplifier has the advantages of being relatively simple in structure, low in complexity, higher in analog control flexibility and wide in application.

A power supply circuit generates from the input voltage of a primary circuit system the output voltage of a secondary circuit system by driving a switching output stage. The power supply circuit includes: a pulse feedback signal generation circuit that generates a pulse feedback signal corresponding to the output voltage; an analog control signal generation circuit that generates an analog control signal corresponding to the pulse feedback signal; and a switching driving control circuit that drives the switching output stage according to the result of comparison of the analog control signal with a slope signal. The analog control signal generation circuit raises the maximum value (an internal supply voltage) of the analog control signal with a predetermined gradient during the start-up or renewed start-up of the output voltage.

Circuits are disclosed for controlling voltage regulators. In general, one aspect disclosed features an electric circuit comprising: a digital ramp generator configured to generate a digital voltage ramp; a digital low-pass filter having an input electrically coupled to an output of the digital ramp generator and configured to low-pass filter the digital voltage ramp; a digital-to-analog converter having an input electrically coupled to an output of the digital low-pass filter and configured to generate an analog control signal based on the filtered digital voltage ramp; and a voltage regulator having an input electrically coupled to an output of the digital-to-analog converter and configured to regulate an output voltage based on the analog control signal and an input voltage of the voltage regulator.

1. The name of the design product: programmable controller (VG700). 2. The use of the design product: used for switch logic control, analog control, motion control, process control, data processing and networking communication of intelligent manufacturing system equipment in automated production. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view 1.

The invention belongs to the technical field of electronic equipment communication control, and provides a multi-electronic equipment communication method and system, and the method comprises the steps: responding to an access request of at least one slave device; detecting the slave device through the master control device to obtain the equipment type of the slave device; and according to the equipment type of the slave device, constructing a physical communication link between the master control device and the slave device, and sending the control data and the high data volume data to the slave device through the physical communication link. The method has the beneficial effects that compatible communication of high-speed equipment and low-speed equipment is realized through dynamic access and dynamic address allocation, stable transmission of speed data streams is carried out on a plurality of high-speed electronic devices, data transmission and control are not influenced by plugging of the high-speed electronic devices, and unified control of a system layer is realized; by simulating the existing pin resources of the control or feedback signal, the transmission of data with high data volume is performed without increasing additional pin resources.

The present invention relates to a motor control method based on MOS transistor drive and related equipment, comprising the following steps: digitally processing a control signal input to a target motor by a preset digital signal processor to obtain a digital control signal; logically processing the digital control signal by the digital signal processor to obtain a logical control signal; modulating the logical control signal by pulse width modulation technology to obtain a PWM control signal; and applying the PWM control signal to a target MOS transistor to drive the target motor to operate in a desired operating state. The method solves the technical problem that traditional analog control methods, due to inherent limitations such as low control accuracy and poor anti-interference ability, are unable to meet the high requirements of modern industry for motor control.

The invention relates to a light module (220) comprising a matrix (111) of pixelated light sources, a driver (112) receiving a power voltage (Vp) and providing a driving voltage to each pixelated light source of the matrix (111), a monitoring circuit (113) connected to the driver (112) for monitoring the driver (112) and storing status information into at least one register, said register comprising at least one alarm bit indicating that the driving voltage is out of a correct range. The light module (200) further comprises an analog control circuit (221) connected to the register for receiving the at least one alarm bit and for providing an analog signal (Vreg) having a voltage value representative of the at least one alarm bit on an analog output. The invention also relates to a headlamp module (200) comprising a DC-DC converter (140) and a light module (220) according to the invention.

The invention discloses an electric heating load control method, device and equipment of a new energy power system. The method comprises the following steps: acquiring a real-time system frequency of the new energy power system; calculating the fluctuation amplitude of the current system disturbance according to the real-time system frequency and a preset reference system frequency; when the fluctuation amplitude is smaller than a preset threshold value, calculating adaptive input power, corresponding to the real-time system frequency, of the electric heating load according to a preset simulation control strategy; the simulation control strategy is generated according to the power and frequency response characteristics of the electric heating load; controlling the input power of the electric heating load through the thyristor power regulator based on the adaptive input power; according to the method, the small-amplitude frequency disturbance is automatically and stably adjusted in real time through an analog control strategy; therefore, the frequency flexible adjustment of the new energy power system by the electric heating load can be realized.

The utility model discloses a heating temperature accurate control system for a blade of a gas turbine. Comprising a heating induction coil, an induction heating power supply and an induction heating power regulator, wherein the heating induction coil is sleeved on the periphery of a heated blade and is not heated by the heated blade; the induction heating power supply is used for supplying power to the heating induction coil; the digital temperature sensor is used for detecting the heating temperature in real time; the digital / analog converter is used for performing digital / analog conversion on a digital temperature signal output by the digital temperature sensor; the analog control output is used for controlling the output power of the induction heating power supply according to an analog signal output by the digital / analog converter; the output end of the digital temperature sensor is connected with a data processor used for collecting and storing heating temperature data. The device is simple in structure, convenient to realize, high in working reliability, strong in anti-interference capability, convenient to maintain and repair, strong in practicability and good in using effect.

A multi-mode power management integrated circuit (PMIC) is provided. Specifically, the multi-mode PMIC can be provided in a wireless communication device to generate an output voltage, which can be an envelope tracking (ET) voltage or an average power tracking (APT) voltage, for amplifying a radio frequency (RF) signal. According to an embodiment disclosed herein, the PMIC replaces a conventional all-analog control circuit with a multi-input hybrid control circuit that includes both analog and digital circuitries. By incorporating the digital circuitry to perform certain processing tasks digitally, it is possible to improve efficiency and reduce the footprint of the multi-mode PMIC.

The application provides a delay compensation control method for a double pendulum wave energy conversion device, which comprises the following steps: numerical modeling and hydrodynamic analysis are performed on the double pendulum wave energy conversion device, time domain motion equations are established, a time delay function is introduced into the time domain motion equations to simulate control signal transmission delay, and partial differential equations are used to simulate the execution delay of the brake; state space equations of the device are established, the convolution items in the time domain motion equations are replaced by the state space equations, and the motion state of the device is calculated; a Hamilton function is defined to convert a constrained optimization problem into an unconstrained optimization problem, the optimal control criterion considering the control delay is obtained by solving the Hamilton function, and the maximization of energy capture under the optimal control criterion is realized. The application truly reflects the operation characteristics of the physical system by introducing the control delay, so that the closed-loop control method is effectively implemented in the actual physical device, and the energy capture efficiency of the wave energy conversion device and the reliability of the system operation are effectively improved.

The invention relates to the technical field of xenon lamp power supply control, in particular to a xenon lamp power supply adaptive structure based on analog control. According to the technical scheme, the circuit comprises a rectification filtering module, an LCC half-bridge resonance circuit, a transformer, a voltage doubling circuit, a full-bridge rectification circuit and a control unit which are connected in sequence. A primary coil of the transformer is connected with the LCC half-bridge resonance circuit, and two secondary coils of the transformer are respectively connected with the input end of the voltage doubling circuit and the input end of the full-bridge rectification circuit; and the output end of the voltage doubling circuit is coupled to an upper bridge arm node of the full-bridge rectifying circuit. Through combination of high-frequency resonant topology and analog feedback control, the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching are realized while the power supply volume (a high-frequency transformer replaces an industrial frequency transformer) is remarkably reduced, the defects of large volume and high loss of a traditional scheme are overcome, and the reliability of the xenon lamp trigger voltage self-adaptive adjustment and millisecond-level pre-combustion state accurate switching is improved. And the pre-combustion success rate is improved, the switching loss is reduced, and the reliability, the energy efficiency and the adaptability of the xenon lamp power supply are comprehensively optimized.

The invention relates to the technical field of testing machines, and discloses a multifunctional simulation testing machine suitable for cabinet connection testing, which comprises a machine body, a cabinet cavity with an opening at the rear end is arranged in the machine body, a plurality of wiring terminals are arranged in the cabinet cavity, and each wiring terminal is provided with an input end and an output end connected with a cabinet; the operation panel is provided with a plurality of control switches for outputting digital control signals or analog control signals, the control switches are electrically connected with the input end, and the digital control signals or the analog control signals sent by the control switches are transmitted to the cabinet machine through the wiring terminal; the design that the control switch can output a digital control signal or an analog control signal breaks through the limitation of single function of traditional test equipment, can meet the diversified requirements of different models and different functions of cabinet machines for test signals, enables one piece of equipment to complete various test tasks, greatly widens the application scene of the equipment, and improves the test efficiency. The equipment purchase cost of an enterprise is reduced; the problem that a testing device is single in function is solved.

The invention relates to a lighting control system and method for simulating a whole vehicle BCM based on a high-side switch and a single-chip microcomputer, and a medium, and relates to the technical field of vehicle lamp simulation control. The lighting control system comprises an instruction input module which is used for generating an original lighting instruction according to a key group and controlling a lighting test; the main control module is used for generating a lighting analog control signal according to the original lighting instruction; the high-side switch driving module is used for driving the mode switching of the vehicle lamp assembly according to the lighting analog control signal and limiting the electric energy flowing through the vehicle lamp assembly; the communication module is used for simulating and sending CAN signals to interact with vehicle lamp assembly signals, and configuring and storing lighting simulation parameters and lighting test data; the load interface module is used for being connected with vehicle lamp assemblies with different interface types, transmitting lighting simulation control signals to test the vehicle lamp assemblies and generating lighting test data; a lighting instruction is translated in a multi-mode mode through an instruction polarization translation mechanism, and high-interference-resistance and low-delay lighting analog control signal generation is achieved.

The invention relates to a control system and method for active self-adaptive vibration and noise reduction of power transformation equipment, and relates to the field of electrical engineering. The control system is mainly composed of a signal acquisition module, a signal separation module, a signal processing module and an execution module. A piezoelectric sensor of the signal acquisition module accurately captures a vibration signal of power transformation equipment, and covers fundamental frequency and harmonic components; the signal separation module and the signal processing module adaptively adjust the analog control circuit, and adaptively adjust the phase and the amplitude according to the change of vibration; the execution module responds rapidly for the inertia actuator and generates reverse inertia force according to a circuit instruction. Vibration fundamental frequency and harmonic signals can be effectively integrated, noise generated by vibration of electrical equipment is suppressed in real time, equipment noise is remarkably reduced, vibration is reduced, the operation stability of the equipment is improved, the service life is prolonged, important application value is achieved in the field of power transformation equipment, and efficient and stable operation of the equipment is assisted.

This utility model discloses a measuring device for measuring the rotational accuracy of an electric actuator, comprising an electric actuator, an encoder, an analog module, a PLC controller, a touch screen, and a power supply module. The electric actuator receives analog control signals and performs angular displacement; the encoder is installed at its output and is used to collect angular travel data; the analog module receives the 4-20mA analog signal output by the electric actuator and converts it into a digital signal; the PLC controller receives data from the encoder and analog module and performs accuracy analysis; the touch screen is connected to the PLC and displays the measurement results in real time; the power supply module provides power to all the above components. This device has a compact structure, high-precision automatic measurement capabilities, significantly improves testing efficiency, and reduces manual operation costs, making it suitable for rapid testing and quality assessment of industrial electric actuators.