8 results about "Intermittent control" patented technology

A fuel supply system for an aircraft according to the present invention comprises: an intermediate tank which is fluidly connected to a fuel pump and an engine via a fuel supply path; a pressure sensor which detects the internal pressure of the intermediate tank or a tank pressure that is correlated with the internal pressure of the intermediate tank; and a processing circuit which executes intermittent control for controlling a pump actuator in accordance with the tank pressure. The intermittent control includes: when the tank pressure increases and reaches a first threshold value, controlling the pump actuator to stop the fuel pump in a state where supply of a fuel to the engine from the intermediate tank is allowed; and when the tank pressure decreases and reaches a second threshold value which is lower than the first threshold value, controlling the pump actuator to drive the fuel pump.

The present application belongs to the field of motor energy-saving control, and specifically refers to a fan group control method based on air volume decoupling distribution, comprising the following steps: S1 parameter initialization and environment perception; S2 segmented linear model calculation of target total air volume based on dynamic temperature control bandwidth; S3 execution of fan cluster total air volume integer distribution based on energy efficiency optimization principle; S4 long-period intermittent control for residual air volume; and S5 execution of life balance scheduling and dead zone protection mechanism based on spatial symmetry. Through the cooperative work of parameter initialization, air volume decoupling, energy efficiency distribution and spatial symmetry scheduling mechanism, the present application realizes low-cost, high-energy efficiency, high-precision and airflow uniformity energy-saving regulation and control of large-space controlled environment without the need of frequency conversion modification.

The application provides a non-periodic intermittent-based fractional-order Chua circuit system finite time control method and system, comprising: setting an initial state of the fractional-order Chua circuit system, and measuring a state variable of the fractional-order Chua circuit system by using a sensor; constructing a finite time non-periodic intermittent controller by using the state variable measured by the sensor; converting a digital control signal output by the finite time non-periodic intermittent controller into a physical quantity by using an executor, and injecting the physical quantity into a corresponding node of the fractional-order Chua circuit system in a working interval, so as to realize finite time stable control of the fractional-order Chua circuit system. The application provides a new solution for finite time control of the fractional-order Chua circuit system, can be applied to fields such as chaos synchronization and secret communication, and has theoretical value and engineering practicability.

The application belongs to the field of polishing test, and discloses a grinding material polishing test analysis method and device, the method comprising: S1, placing a test workpiece and a grinding sheet in a polishing test device, and performing multiple rounds of polishing test, each round of polishing test comprising an effective polishing stage and an intermittent control stage; S2, obtaining a surface image of the test workpiece after the polishing test of multiple rounds of cycles is completed; S3, calculating the surface image using an improved omnidirectional multi-scale detection algorithm to obtain a visual performance score of the grinding sheet. The application realizes no-missing response to multiple direction scratches through an omnidirectional filter and continuous direction interpolation, and significantly reduces the missing detection rate of multi-directional cross scratches. Based on the self-adaptive determination of the grinding sheet granularity number, multiple sets of detection scale parameters are determined, so that the filter can effectively capture different width scratches from coarse to fine at the same time, and the comparability of test results of different specifications of materials is ensured.

The application discloses an intelligent intermittent control method, system and device of an oil production system and a storage medium, and comprises the following processes: S1, acquiring continuous production work diagram data of a current oil well; S2, judging whether the oil well reaches a steady state production through the continuous production work diagram data; S3, if the oil well reaches the steady state, calculating the pump efficiency of the oil well in the steady state, and issuing a pumping unit shutdown instruction when the calculated pump efficiency is less than or equal to a set minimum pump efficiency; and S4, calculating the change amount of the static load value when the liquid level height changes after the pumping unit is shutdown, and issuing a pumping unit startup instruction when the change amount of the static load value is greater than or equal to a set load change value. The method realizes real-time intelligent intermittent control according to the actual state of the oil well, and does not need additional manpower and material resources.

This invention discloses a device and method for testing the compressive strength of pellets, belonging to the field of pellet testing technology. The invention includes a frame, with a PLC control device on one side and a feeding device on the other side. A receiving device is located at the output end of the feeding device, comprising a closed rolling chain with four sets of receiving bowls and one set of discarding bowls evenly fixed to its surface. This invention employs a unique mechanical structure with four receiving bowls and one discarding bowl, combined with precise intermittent PLC control logic, to enforce random discarding of test samples from both physical structure and testing process perspectives, effectively ensuring the randomness and representativeness of the final test samples. Through the coordinated operation of the PLC control device and various execution units, the entire process of feeding, identification, testing, and discarding is automated.

This invention relates to the field of oil well intermittent control technology, and particularly to an intermittent control method based on edge computing. The steps are as follows: S101: Set the oil well information transmission path and generate basic oil well analysis data; S102: Perform edge computing through the wellhead RTU based on the basic data to complete information extraction and analysis, generating single-well production, daily power consumption, dynamic fluid level, and system efficiency; S103: Set parameter constraints online; S104: Perform online discrimination based on the parameter constraints and correct the operating cycle T, start-up time RT, and shutdown time ST; S105: Automatically set the optimal operating cycle T, start-up time RT, and shutdown time ST on each wellhead RTU; S106: After setting the optimal operating cycle T, start-up time RT, and shutdown time ST, automatically display the data in tables and experimental data curves. This invention improves the safety, reliability, and stability of intelligent intermittent oil well operation, significantly increases mechanical production efficiency, and reduces costs.

This application relates to a dynamic intermittent control method, apparatus, device, storage medium, and program product. The method includes: acquiring the expected grid connection value of a single-unit infinite bus power network system and the actual state value of the single-unit infinite bus power network system; outputting intermittent control signals based on the expected grid connection value and the actual state value to control the operation of an actuator; wherein the intermittent control signals are used to indicate the frequency of operation through control commands, so that the actuator remains silent when the single-unit infinite bus power network system is in a stable equilibrium range. This application can reduce the frequency of control command operations, allowing the actuator to remain silent when the system is in a stable equilibrium range, activating and applying effective control only when necessary, thereby reducing mechanical and electrical wear of the mechanism and significantly extending the service life of the equipment.