13 results about "Digital signal controller" patented technology

The application provides a non-continuous three-phase rectifier adjustable power decoupling method, and relates to the field of power electronics. The method is characterized in that a capacitor equivalent circuit is connected in parallel to the DC side of a three-phase PWM rectifier, the capacitor equivalent circuit is composed of a first capacitor connected in series with an active negative capacitor circuit, and a digital signal controller is used to sample the relevant voltage and current signals of the AC side and the DC side, and the active negative capacitor capacitance is adjusted by controlling the switching tube, so that the equivalent capacitor circuit can be flexibly adjusted. The application does not require an additional DC power supply, the capacitance and inductance of the passive device used are small, and the volume advantage is significant. The closed-loop control has high precision and equivalent inhibition effect as the traditional large capacitor. The equivalent capacitance is adjusted only by software, the external physical structure does not need to be changed, and the adjustment range is wide. The preset DC side voltage fluctuation amplitude can be calculated and adjusted automatically, different unbalanced working conditions can be adapted, the fluctuation suppression demand can be met, different working modes can be switched according to the AC side working condition, and the application is not continuously operated, so that the switching loss is lower.

A low power high bandwidth analog to digital converter system is disclosed. A first analog signal input receives an input signal. A first programmable gain amplifier receives the input signal. An analog to digital converter (ADC) is coupled to the output of the first programmable gain amplifier and samples the input signal for conversion to a digital signal. A controller is coupled to the ADC and the first programmable gain amplifier. The controller selects and enables either a reduced power mode or a power up mode for the first programmable gain amplifier and the ADC. The power up mode is selected and enabled when the input signal is to be sampled to operate the first programmable gain amplifier and the ADC to sample the input signal.

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.

The embodiment of the utility model discloses a testing device and system for a sensor core. The testing device for the sensor core can comprise an analog-to-digital conversion module, a controller and a power supply module. Wherein the analog-to-digital conversion module is connected to the sensor core body and is used for converting an analog signal in the sensor core body in a testing process into a digital signal; the controller is connected to the analog-to-digital conversion module and is used for receiving the digital signal and generating test data of the sensor core according to the digital signal; and the power supply module is connected to the analog-to-digital conversion module, the controller and the sensor core body and is used for supplying power to the testing device of the sensor core body.

The embodiment of the utility model provides a multi-channel analog signal processing device. The multipath analog signal processing device comprises a shift register which receives a serial control signal and converts the serial control signal into a parallel control signal; the gating switch comprises at least one primary gating switch and at least one secondary gating switch; the analog-to-digital converter is used for converting the second analog signal into a digital signal; and a controller which transmits the serial control signal for controlling the gating switch to the shift register and receives the digital signal from the analog-to-digital converter. Therefore, the multi-channel mixed signal is processed based on one analog-to-digital converter, the hardware cost is greatly reduced, and meanwhile, the dependence on peripheral resources of the controller is reduced.

This utility model discloses an integrated three-phase drive and three-phase rectification electronic control unit for aero-engines, comprising: a digital signal controller U1, a three-phase full-bridge power circuit, a drive chipset, a drive resistor network, an anti-reverse device, a capacitor C3, and a power supply S1; MOSFETs M1, M3, and M5 of the three-phase full-bridge power circuit form the upper bridge arm, and MOSFETs M2, M4, and M6 form the lower bridge arm, corresponding to the U-phase, V-phase, and W-phase, respectively; the signal output from the digital signal controller U1 is amplified by the drive chipset and then drives the gates of MOSFETs M1 to M6 through the drive resistor network; the positive and negative terminals of the power supply S1 are connected to the upper and lower bridge arms, respectively; capacitor C3 is connected in parallel between the positive and negative terminals of the power supply S1; and the anti-reverse device is connected in series between the positive terminal of the power supply S1 and the upper bridge arm. This integrated three-phase drive and three-phase rectification electronic control unit for aero-engines, through its integrated design, reduces the need for additional batteries or external rectifiers, thus reducing the weight of the aircraft.

This invention discloses a symbolic velocity particle swarm optimization system based on memristors, belonging to the field of artificial intelligence hardware acceleration technology. It includes: a particle weight matrix storage module, an FPGA controller, a DAC, a TIA, an ADC, and a programming driver circuit. Input data is converted into analog voltage signals by the DAC and applied to the row lines of the particle weight matrix storage module. The particle weight matrix storage module consists of independent memristor cross arrays, storing the position and orientation matrices of each particle. The memristor cross arrays perform vector-matrix multiplication operations in parallel using Kirchhoff's laws and Ohm's laws. The column line output current of the particle weight matrix storage module is amplified by the TIA and converted into a digital signal by the ADC. After receiving the digital signal, the FPGA controller performs the following operations: calculates the cross-entropy loss as the fitness value, compares the fitness values ​​and updates the individual optimum and the global optimum; calculates the cognitive direction and social direction, generating a three-valued orientation matrix; and applies selective SET / RESET pulses to the memristor cross arrays through the programming driver circuit.

The current detection device comprises a current sensor unit, a signal processing unit, a main control unit and a communication unit which are connected in sequence, the current sensor unit is used for measuring a current signal in a load and comprises an electromagnetic induction structure formed by at least two layers of electromagnetic coils connected in series, each layer of electromagnetic coil is provided with a secondary current tap, and primary large current is converted into secondary small current by multiple times; the secondary output end of each layer of electromagnetic coil is connected in series with a filtering magnetic bead and a high-frequency filtering capacitor; the signal processing unit is used for amplifying the secondary current output by each layer of electromagnetic coil and converting the secondary current into a corresponding voltage signal; the main control unit comprises a controller and an AD conversion module, the AD conversion module converts an input analog signal into a digital signal, and the controller calculates a secondary current value output by each layer of electromagnetic coil according to the digital signal and calculates a load current according to the primary and secondary turn ratio of the electromagnetic coil.

A PLC control-based high-precision metering and weighing system. Product weight measurement and sorting are implemented by combining a pressure sensor, a weighing module, and a fuzzy PID control algorithm. The system can quickly convert weight information of a product to be tested into a voltage signal, which is amplified and subjected to analog-to-digital conversion to provide an accurate digital signal for a PLC. The PLC controller utilizes the fuzzy PID algorithm to perform error analysis and adaptive parameter adjustment, thereby improving control precision and response speed. In addition, by means of quantization processing and the use of a membership function, the system can effectively reduce errors and perform self-correction, thereby improving the accuracy and reliability of overall weighing and sorting. The weighing system can achieve efficient automatic control in industrial applications, and adapt to weighing requirements of different products.

The present disclosure relates to a kind of cylinder cat paw load distribution device, equipment, method and computer readable storage medium.The device includes: jacking device, for corresponding cat paw vertical motion;Pressure detection device, for measuring the pressure value during cat paw is driven by jacking device, and generates corresponding pressure detection signal;Displacement detection device, for measuring the vertical motion displacement value of cat paw, and generates corresponding displacement detection signal;Data acquisition module, for the pressure detection signal and displacement detection signal received are handled and converted, generate corresponding digital signal;Controller, for obtaining the height pressure correlation of each cat paw, obtains pressure value and displacement value according to the digital signal received, and calculates the target gasket adjustment amount of cat paw according to pressure value or displacement value and height pressure correlation.The application improves the test precision and work efficiency of cat paw load distribution, avoids the waste of manpower and material resources in traditional method.

Device (100, 200, 300) for wireless communication, wherein the device (100, 200, 300) comprises: a baseband processor (160, 260, 360, 400, 500) configured to generate status information (S_INF) for a wireless communication channel by processing a baseband signal (BB, TX_BB, RX_BB); and a controller (180, 280, 380) that is configured to enable a low-performance operation in a first channel state that is worse than a second channel state, based on the state information (S_INF), where the baseband signal is a digital signal (D_SIG), the controller (180, 280, 380) is configured to generate a control signal (CTR1, CTR2, CTR3) that activates the low-power operation in the first channel state, and The baseband processor (160, 260, 360, 400, 500) is configured to omit processing of at least one least significant bit of the digital signal (D_SIG) in response to the control signal (CTR1, CTR2, CTR3) that activates the low-power operation.

The invention belongs to the technical field of belt conveyors, and particularly discloses an automatic monitoring and correcting method for deviation of a conveying belt based on a depth map, which automatically constructs a belt datum line through a visual unit, performs edge detection based on depth information, can directly output a millimeter-level deviation distance, has a definite engineering application value, and is suitable for popularization and application. Linkage with a control system is facilitated; the vision unit captures the deviation state of the conveying belt in real time and quantizes the deviation state into a digital signal; the PLC compares the detection signal with a set reference and generates a corresponding deviation correction instruction; the servo electric push rod accurately responds to the instruction to drive the aligning carrier roller to generate transverse deviation rectifying force, and the running track of the conveying belt is dynamically corrected to achieve deviation rectifying; a dynamic feedback adjusting mechanism is formed in the whole process until the conveying belt is recovered to be within the set allowable error range, and stable operation is kept.

This application provides a distributed control device and method for hot-plugging multiple active bridge transformer submodules, comprising: a resistor divider circuit electrically connected to a high-frequency AC bus, used to convert the high-frequency AC bus voltage into a 0-5V divided voltage signal; a voltage comparator electrically connected to the output of the resistor divider circuit, comparing the divided voltage signal with a set reference potential and outputting high and low level digital signals; a DSP controller electrically connected to the voltage comparator, which sets a phase qualification flag when the phase difference between the local counter and the zero-phase reference t0 is less than a phase threshold; and a transformer submodule electrically connected to the DSP controller, which controls an AC relay to close to connect to the high-frequency AC bus when it receives the phase qualification flag from the DSP controller. This invention addresses the problems of related technologies that often employ centralized control, over-reliance on a central controller, and limitations in computing power and flexibility, especially as the number of modules increases.