20results about How to "Improve control quality" patented technology

The invention relates to the technical field of industrial automation control, in particular to a valve positioner control algorithm switching method, system and device based on self-tuning and a storage medium, and the method comprises the steps that S1, a self-tuning calibration process is executed on a valve, and motion parameters including the whole-course motion time, the position deviation and the minimum effective control quantity of the valve are obtained; s2, according to the motion parameters, a discrimination factor representing the resistance characteristic of the valve is obtained through calculation according to a preset weighted calculation formula; and S3, comparing the discrimination factor with a preset critical value, automatically selecting a target control algorithm from a plurality of pre-stored control algorithms according to a comparison result, and performing closed-loop control on the valve by adopting the target control algorithm. According to the method, the control algorithm and the resistance characteristic of the valve are automatically and accurately matched, the adaptability, the stability and the control quality of valve control are effectively improved, and meanwhile the debugging and maintenance cost is remarkably reduced.

The application discloses a kind of pet snack processing uses air-drying equipment and process, it is related to meat product drying technical field, the first flexible hollow plate and the second flexible hollow plate are set to each other by the present application, for flexible clamping to meat strip, reciprocating transverse extrusion force is applied to the left end of two flexible hollow plates by first electric push rod, so that the two flexible hollow plates of pair arrangement can be clamped meat strip reciprocating bending, flatten, so that the hard shell formed on the surface of meat strip can be periodically destroyed, guarantee the smoothness of internal moisture export in the process of meat strip air-drying, not only can effectively improve air-drying efficiency, but also can significantly improve palatability after meat strip air-drying, and it has good applicability to young, old and pet population with weak oral function.

The application discloses a workshop constant temperature and humidity control method and system based on ultrasonic cold atomization, and belongs to the technical field of industrial environment control. In view of the defects of high energy consumption, heat interference, control lag and too tight coupling with a production system of a steam humidification mode in the prior art, the method comprises the following steps: obtaining real-time humidity of a workshop, and generating a standard industrial simulation control signal by an air conditioner main control unit; the signal is converted into a driving signal through an independently arranged signal conversion control module, and normal-temperature atomized water vapor output by an ultrasonic cold atomization humidification device is controlled, so that the original steam humidification device is completely replaced. The system also has a manual control mode and a state display function, and can realize decoupling of humidification and a boiler, so that the boiler is completely stopped when a production line is shut down. The application replaces fossil fuels with electric energy, saves energy and reduces cost, eliminates heat interference and improves temperature control accuracy, and can be seamlessly integrated without modifying the original PLC program, thereby supporting lean energy management.

This invention discloses a system and control method for enhancing the variable load capacity of coal-fired power units through integrated molten salt energy storage. The system comprises a coal-fired power unit and a molten salt energy storage system. The molten salt energy storage system heats feedwater after steam preheating, and the resulting superheated steam is injected into the intermediate-pressure cylinder to perform work. The corresponding control method is as follows: First, determine the load commands for the coal-fired power unit and the molten salt energy storage system; second, formulate a control strategy for the molten salt energy storage system; next, determine the key parameter setpoints for the integrated molten salt energy storage system to enhance the variable load capacity of the coal-fired power unit; then, calculate the superheated steam flow setpoint for the molten salt energy storage system; finally, iteratively determine the PID controller parameters under optimal conditions. This control method is compatible with the existing control system of the coal-fired power unit, reduces the system's computational complexity and retrofitting costs, and significantly improves variable load capacity and operational control quality.

The utility model provides a kind of alkali method bromine extraction system for air blow-out method, through acidification oxidation-blow out-multistage absorption-absorption liquid cascade configuration circulation-distillation bromine extraction whole process cooperation, constructs the closed loop bromine extraction system of " bromine ion directional conversion→brim gas grading enrichment→absorption liquid gradient utilization→bromine precise purification". With at least two levels of series absorption tower to match independent absorption liquid pool, realize alkali liquid cascade configuration and absorption liquid reverse flow, adapt to different seawater bromine content and working condition, reduce alkali consumption and tail gas bromine loss;Each unit of whole process is accurately connected, both improve the conversion efficiency of bromine oxidation, absorption, distillation, also ensure the purity of bromine through multistage purification, solve the problem of low traditional bromine extraction yield, high energy consumption, poor adaptability, provide efficient, energy saving, quality controllable system scheme for large-scale seawater bromine extraction, achieve the collaborative optimization of bromine extraction efficiency, resource utilization, product quality.

The utility model relates to the technical field of quartz crucible production, in particular to a quartz crucible forming rod which comprises a hollow forming rod body, the forming rod body is provided with an outline matched with a quartz crucible and comprises a bottom end and a top end, and a plurality of positioning grooves are formed in the bottom end of the forming rod body; the forming rod tip is movably arranged at the bottom end of the forming rod body, one end of the forming rod tip is located in the bottom end of the forming rod body and can be selectively clamped into any one of the multiple positioning grooves, and the other end of the forming rod tip is located outside the bottom end of the forming rod body so that the forming rod body can be positioned at different positions. The forming rod can be positioned at different positions by adjusting the tip of the forming rod so as to be matched with different thicknesses of the inner-layer quartz sand and the outer-layer quartz sand during preparation of the quartz crucible, so that frequent replacement of the forming rod is avoided, and the operation process is simplified.

This invention discloses an online identification method for key parameters of a magnetically driven rotor for twin control. The method includes: constructing a parameterized digital twin model of the magnetically driven rotor, defining the time-varying key internal parameters in the model as parameter vectors to be identified; defining an objective function within a set time window, transforming the parameter identification problem into a nonlinear optimization problem that minimizes the objective function; adaptively identifying system parameters based on the LM optimization method to obtain parameter update vectors; passing the parameter update vectors to the system matrix of the parameterized digital twin model for state prediction at the next time step, and outputting the parameter update vectors to complete the online identification of key parameters. This invention effectively improves the accuracy, real-time performance, and embedded platform adaptability of parameter identification, providing a reliable model foundation for high-precision control, performance degradation monitoring, and predictive maintenance of magnetically driven rotors.

This invention discloses a path planning method for a robotic arm platform, a robotic arm platform, and a storage medium, relating to the field of robotic arm path planning technology, and is invented to improve path planning accuracy. The method involves acquiring the current pose of the robotic arm platform, current environmental information, and the target arrival point. An initial obstacle avoidance path is generated using a gradient descent method with the adversarial potential field as parameters, taking the current environmental information and the target arrival point as parameters. This initial obstacle avoidance path is then smoothed using a filtering algorithm to obtain a smoothed obstacle avoidance path. The dynamic model of the robotic arm platform is used as a constraint, and an iterative optimization of the smoothed obstacle avoidance path is performed using a target value function with tracking error penalty, smoothness penalty, and energy consumption penalty as parameters, resulting in the planned path for the robotic arm platform after the target value function converges. This invention is used for robotic arm path planning.

The utility model discloses a flange angle iron processing device, which belongs to the technical field of flange processing, and comprises a machine table, one side of the machine table is sequentially provided with a feeding guide device, a processing machine head and a discharging guide device from left to right, the machining machine head comprises a machine head installation frame, the included angle between the machine head installation frame and the horizontal plane is 45 degrees, a set of positioning installation plates are arranged in the center of the machine head installation frame, and a set of L-shaped positioning grooves are formed in the positioning installation plates. According to the technical scheme, the complete machining process of feeding, machining and discharging can be automatically completed, the machining efficiency is greatly improved, manpower and material resources are saved, angle iron profiles are limited, positioned and fixed in the machining process, the quality of the angle iron profiles punched through the punching machine head and machined and formed is stable and controllable, and the good using effect is achieved.

The utility model discloses a kind of electric heating wire lengthening device, linear guide is provided on base, first fixed seat, second fixed seat are connected with guide rail, and the initial position of both is interval arrangement, electric heating wire is located between first fixed seat, second fixed seat, and the both ends of electric heating wire are respectively positioned and connected with first fixed seat, second fixed seat, first fixed seat, second fixed seat are respectively connected with a driving source, and driving source drives first fixed seat, second fixed seat moves along guide rail opposite to lengthen electric heating wire. By first fixed seat, second fixed seat positioning and connecting electric heating wire, and first fixed seat, second fixed seat linearly stretch electric heating wire, to keep lengthening electric heating wire, first fixed seat, second fixed seat are driven by different driving sources respectively, by the same speed, rate, stroke design of both, to keep evenly stretching electric heating wire, lengthening device is suitable for electric heating wire of different original length, and is suitable for different lengthening length.

This invention relates to the field of traditional Chinese medicine preparation technology, specifically to a Qi-invigorating and blood-activating granule for heart pain and its preparation method, comprising the following raw materials in parts by weight: 25-35 parts of raw Astragalus membranaceus, 10-20 parts of Angelica sinensis, 5-15 parts of ginseng, 4-8 parts of Panax notoginseng, 10-20 parts of Ligusticum chuanxiong, 8-12 parts of earthworm, and 2-4 parts of leech. This invention precisely targets the core pathogenesis of Qi deficiency and blood stasis syndrome, which is "Qi deficiency as the root and blood stasis as the manifestation," selecting raw Astragalus membranaceus and ginseng as the core Qi-invigorating components, and Panax notoginseng, leech, Ligusticum chuanxiong, Angelica sinensis, and earthworm as the core blood-activating components. The formulation follows the traditional Chinese medicine principle of "invigorating Qi to promote blood circulation without harming the body's vital energy." The dosage of each raw material has been optimized through systematic experiments to form a specific range of parts by weight, solving the technical problems of poor targeting and insufficient synergy in existing formulations.

This invention relates to the field of electrolysis process control technology, and particularly to a method and system for preventing over-temperature control of the deaerator in a water electrolysis hydrogen production purification system. The method includes: acquiring monitoring data of the electrolyzer's operating status and oxygen content monitoring data at the deaerator inlet; performing logical judgment calculations on the electrolyzer's operating status monitoring data based on a preset set of disturbance parameter thresholds to obtain a feedforward control signal; performing deviation calculations and feedback control algorithm calculations on the oxygen content monitoring data based on a preset first oxygen content threshold to obtain a feedback control signal related to the preset threshold; and performing control logic operations based on the feedforward and feedback control signals to generate control commands. This approach solves the technical problem of response lag in existing deaerator temperature control technologies, improving the control quality, equipment safety, and operational reliability of alkaline water electrolysis hydrogen production systems under complex operating conditions.

The invention provides an aircraft intelligent control method based on dynamic teaching deep reinforcement learning, and the method comprises the steps: constructing an aircraft feedback control architecture: taking a deep neural network as an aircraft intelligent controller, taking a command signal and a real-time state as neural network input, and taking an execution mechanism control signal as neural network output; an aircraft simulation environment containing hidden parameter random pulling deviation is constructed; constructing an expert controller according to the hidden parameters; constructing a neural network model of the intelligent controller: adopting an Actor-Critic network structure when the intelligent controller is trained; constructing a mixed experience pool, wherein data maintained by the mixed experience pool comprises an experience data set, a priority data set and an environment similarity data set; and training the deep neural network by adopting a determined strategy gradient in combination with a dynamic expert teaching deep reinforcement learning algorithm to obtain a control strategy for realizing a flight index to the maximum extent. According to the invention, the control quality of the aircraft control method for high uncertainty of hidden kinetic parameters can be improved.

The invention relates to a denitration NOx control method and device based on an intelligent control strategy and electronic equipment, and relates to the technical field of power plant automatic control, and the denitration NOx control method comprises the steps that according to a monitoring instrument state signal of a reactor, process reaction parameters corresponding to the reactor are obtained; predicting a first NOx concentration corresponding to the reactor by using different concentration prediction algorithms according to the process reaction parameters; determining a second NOx concentration corresponding to the reactor based on the first NOx concentration and the process reaction parameters through cooperative operation of a concentration prediction model and a state compensator; and performing ammonia flow closed-loop regulation by using the first PID controller based on the second NOx concentration and the ammonia flow feed-forward control instruction, and generating an ammonia flow control instruction corresponding to the reactor. The first PID controller is combined with the second NOx concentration and the ammonia gas flow feed-forward instruction for closed-loop adjustment, the large lag characteristic of the denitration system is counteracted, and the ammonia spraying flow control precision is improved.

The utility model discloses a kind of heating and refrigeration dual-purpose oil cooling control system pry body equipment, including hot oil side system, desalted water water replenishment side system, desalted water side system, heating and refrigeration side system, cooling tower system and intelligent control cabinet.Hot oil side system exchanges heat by full-welded plate heat exchanger;Desalted water side system is switched by desalted water internal circulation pump and cooling tower circulation pump, and cooperation electric regulating valve realizes winter heating and summer refrigeration mode;Heating and refrigeration side is by multiple sets of coil fan to indoor delivery heat or cold quantity;Intelligent control cabinet integrated control entire system operation.The utility model realizes the integration of all-year heating and refrigeration function, with the advantages of energy-efficient, control accurate, stable and reliable operation, small footprint and easy to install and maintain.

The invention belongs to the technical field of equipment control, and particularly relates to a sliding mode suppression method for chaotic motion of a mechanical arm joint motor and a storage medium, and the method comprises the steps: building a permanent magnet synchronous motor (PMSM) mathematical model with stator d-axis current, q-axis current and rotor angular velocity as state variables; performing affine transformation and time scale transformation on the established PMSM mathematical model to obtain a dimensionless PMSM mathematical model; based on the dimensionless PMSM mathematical model, determining a PMSM chaotic model when there is no external input of the motor; defining PMSM system state variables associated with the given rotating speed and the actual rotating speed; by constructing a novel non-singular fast terminal sliding mode surface and designing a corresponding reaching law, the PMSM system in a chaos state can be quickly guided to a stable equilibrium point under external disturbance and parameter change. The stability of the controller is strictly proved based on the Lyapunov theory, and it is ensured that the system state converges within finite time.

The application relates to a charging and driving integrated controller of an electric vehicle, which comprises a driving module and a charging module. The driving module is an improved three-phase asymmetric half-bridge circuit, two common-source connected switch tubes are used to replace an A-phase lower tube and a B-phase upper tube, a B-phase motor winding is connected with a manual switch in series, and then connected with the series connection points of switch tubes and diodes in an upper tube bridge arm and a lower tube bridge arm of the B-phase asymmetric half-bridge circuit. The charging module comprises a first capacitor and a rectifier bridge. The two ends of the first capacitor are connected with the series connection points of switch tubes and diodes in a lower tube bridge arm of an A-phase asymmetric half-bridge circuit and the series connection points of switch tubes and diodes in an upper tube bridge arm of a B-phase asymmetric half-bridge circuit respectively. Two output ends of the rectifier bridge are connected with the series connection points of the B-phase motor winding and the manual switch and the positive pole of a storage battery respectively, and the input end of the rectifier bridge is connected with commercial power. The application can realize the functions of motor driving and storage battery charging, does not need to additionally add a charger, can realize step-up and step-down charging, and the externally connected parts are all passive devices, so that the application has excellent stability and reliability.

The invention relates to the technical field of compressed air energy storage, and discloses a multi-parameter coupling adaptive regulation and control method and system for a heat storage and exchange system, and the method comprises the steps: collecting the multi-source original operation data of the heat storage and exchange system of a compressed air energy storage power station through a sensor network, and forming a multi-source information set; inputting the multi-source information set into a preset control prediction model to obtain a prediction output value, comparing the prediction output value with an actual measurement value to obtain a self-adaptive control model, predicting a future key controlled variable change track by combining with the current state of the heat storage and exchange system, and solving through multi-target constraint optimization to obtain an optimal operation sequence. The first control action of the optimal operation sequence is sent to an execution mechanism; and performing multi-parameter coupling and decoupling processing on the optimal operation sequence under the MPC optimization framework to form cooperative control instruction execution. According to the invention, multi-parameter efficient cooperation and decoupling control are realized through the MPC framework, and the stability of the CAES power station is effectively enhanced by means of the feedforward-feedback combination with the look-ahead decision and anti-interference capability.

The application provides a carrier track angle calculation method and system, which comprises the following steps: calculating a carrier sailing track equation, converting the carrier sailing track equation into a spatial orthogonal parameter equation, and obtaining track data of different orthogonal directions with time as a parameter; setting a time window for the track data of each direction, and predicting track data in a future certain time by using a mirror image extension method; performing EMD decomposition on the track data of each direction in the time window and the mirror image extension interval, and obtaining an average trend component; and calculating a carrier track angle according to the average trend component. The EMD decomposition of the carrier motion track can inhibit the interference of high-frequency disturbance on the carrier, significantly reduce the additional energy consumption caused by frequent control, and improve the control quality of the system.

This invention discloses an energy-saving control method for adjusting the temperature and humidity of a cleanroom, comprising the following steps: S1, acquiring real-time temperature and humidity data, equipment operating status data, and outdoor meteorological data at multiple locations within the cleanroom; S2, generating a dynamic temperature and humidity load distribution cloud map based on the indoor temperature and humidity data and a cleanroom space model; S3, logically dividing the cleanroom into at least two virtual areas with different control priorities based on the dynamic temperature and humidity load distribution cloud map. The beneficial effects of this invention are: by constructing a dynamic load distribution cloud map and dividing virtual areas, a shift from overall uniform control to precise, on-demand local control is achieved. By matching and directionally intervening in dynamically occurring local load areas with the lowest-cost available adjustment methods in real time, energy waste caused by overall adjustment to meet local needs is avoided, significantly reducing the total system energy consumption while ensuring the control accuracy of key areas.