12 results about "Dual loop control" patented technology

1. The name of the design product: mine double loop controller. 2. The use of the design product: for industrial automation control and system stability. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The present application relates to the technical field of vehicle power output and electric energy conversion, and particularly relates to a kind of automobile hydraulic power generation system and control method, system includes power take-off module, hydraulic power module, power generation module, energy storage module, control module.The present application introduces adjustable energy conversion link consisting of hydraulic pump and hydraulic motor between vehicle power take-off interface and generator, realizes flexible decoupling and reconstruction of mechanical power, reduces the direct influence of engine operating condition fluctuation on generator speed, thereby significantly improves output frequency and voltage stability, on this basis, constructs double-loop control mechanism with generator speed stability as target and hydraulic circuit pressure as constraint, and adopts hierarchical control strategy of preferentially regulating hydraulic motor displacement, regulating hydraulic pump flow after displacement is limited, effectively shortens speed recovery time, suppresses pressure surge, reduces energy loss, improves overall control efficiency and operating stability of system.

The invention relates to a double-loop control method and system for medium-frequency induction heating of a semiconductor liquid source, and belongs to the technical field of semiconductor manufacturing configuration equipment. The method comprises the steps that the medium-frequency induction electric frequency is obtained, the resonant frequency is synchronously adjusted, and a liquid source heating control basis is provided; constructing a temperature-pressure double-loop feedback curve, dynamically adjusting the inversion output power through a proportional-integral algorithm, and controlling the amplitude and distribution of the medium-frequency induction heating current; through a differential serial communication protocol, the signals are transmitted to the flexible heating coil through a twisted-pair shielded wire and a differential signal interface, and the liquid source is heated by the induction eddy current; and controlling the temperature of the induced eddy current heat source based on a fanless cooling scheme, adjusting the cooling intensity by associating the medium-frequency induced electric frequency, and executing power limitation when the load impedance is abnormal based on built-in safety interlocking logic when the liquid source temperature is monitored to deviate from a preset safety cooling temperature interval.

The invention discloses an online equipment double-control heating system, and relates to the technical field of online treatment of molten aluminum, the online equipment double-control heating system comprises a central processing module, and a double-target setting unit, a double-loop control unit, a power arbitration module and a dynamic temperature difference monitoring unit are integrated in the central processing module; and the temperature monitoring module is in communication connection with the central processing module, and the temperature monitoring module comprises an atmosphere detection unit and a molten aluminum detection unit. According to the application, the double-loop control is combined with a power arbitration maximization principle, the temperature change can be quickly responded, the energy distribution is optimized from the global perspective, the most urgent heating requirement is preferentially met, the temperature rise efficiency and the overall energy efficiency are improved, the excessive temperature difference between the molten aluminum and the atmosphere can be actively intervened and forcibly reduced by a dynamic temperature difference monitoring and suppression strategy, and the energy consumption is reduced. And the process risks such as aluminum liquid condensation or local overheating are effectively prevented, the product quality of degassing and filtering effects and the equipment safety are fundamentally guaranteed, and the system has high reliability.

The application discloses a control method of a tiltable three-rotor unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles. The control method comprises the following steps: acquiring real-time state data of the unmanned aerial vehicle; acquiring a task instruction of the unmanned aerial vehicle; performing double-loop control calculation based on the real-time state data and the task instruction to generate a pseudo control instruction; and performing control distribution calculation based on the pseudo control instruction to generate a motor throttle and a rudder deflection angle instruction of the three-rotor unmanned aerial vehicle. The control method generates the motor throttle and the rudder deflection angle instruction of the three-rotor unmanned aerial vehicle through distribution calculation after double-loop control calculation based on state data and a task instruction, realizes decoupling of pitch attitude control and forward flight control and a control mode of fixed-inclination forward flight of the unmanned aerial vehicle, and solves the problem of single control mode and limited adjustment effect of a conventional multi-rotor unmanned aerial vehicle flight control method.

This application relates to a novel intake and exhaust system for diesel engines and its control method. The intake and exhaust system includes an intake system, an exhaust system, and a control system. This system improves upon existing diesel engine intake and exhaust systems by installing an intake pressure sensor between the intercooler and the intake manifold in the intake system, and connecting an exhaust bypass valve to the exhaust manifold in the exhaust system. A solenoid valve and a mechanical pressure relief valve are connected in parallel to the exhaust bypass valve. The control system controls the opening degree of the solenoid valve based on the pressure signal. This system uses exhaust gas energy to drive turbocharging as its core, and combines electronic and mechanical dual-loop control to achieve dynamic balance of intake pressure. It can be widely applied to the intake and exhaust systems of diesel engines.

This invention relates to the field of wastewater treatment technology, specifically to a dual-loop control method for aerobic space-aeration based on the nitrification process in wastewater treatment, constructing a dual loop of "on-demand aeration" and "on-demand aerobic" aeration. In the aeration loop, a SAD (Self-Aeration Optimization) method is proposed. n The indicator integrates deep learning feedforward prediction and PID feedback correction with dead zone to precisely control aeration rate directly with ammonia nitrogen removal as the target; in the aerobic space loop, a SAD is established. n A U-shaped curve correlation model with aeration intensity is used to solve for the economic aeration intensity through a neural network, and the optimal aerobic zone volume is dynamically calculated in conjunction with the target aeration rate. The two loops are decoupled and coordinated based on the nitrification process, ensuring the aeration system always operates at its optimal energy efficiency point. This invention achieves in-situ, zero-delay, and precise control of the biological nitrification process. While ensuring stable compliance with effluent ammonia nitrogen standards, it significantly reduces aeration energy consumption and the unit consumption of added carbon sources, improves total nitrogen removal rate, and achieves energy saving, consumption reduction, and quality improvement in wastewater treatment.

The application relates to a semiconductor liquid source intermediate frequency induction heating double-loop control method and system, and belongs to the technical field of semiconductor manufacturing configuration equipment. The method comprises the following steps: acquiring an intermediate frequency induction electric frequency, synchronously adjusting a resonance frequency, and providing liquid source heating control basis; constructing a temperature-pressure double-loop feedback curve, dynamically adjusting inverter output power through a proportional integral algorithm, and controlling the amplitude and distribution of the intermediate frequency induction heating current; the differential serial communication protocol is transmitted to a flexible heating coil through a twisted shielded wire and a differential signal interface, an induced eddy current heating liquid source is heated, the temperature of the induced eddy current heat source is controlled based on a fan-free cooling scheme, the cooling intensity is adjusted in association with the intermediate frequency induction electric frequency, and when it is monitored that the liquid source temperature deviates from a preset safe cooling temperature interval, power limitation is executed based on built-in safety interlocking logic when the load impedance is abnormal.

The invention discloses a medium filling control method for a mobile heat supply vehicle, and belongs to the crossing field of heat energy engineering and automatic control, and the method comprises the following steps: obtaining related parameters of a medium container of the mobile heat supply vehicle; generating a temperature reference track as a target reference of inner ring temperature rise rate control; double-loop cooperative control is conducted till the medium container is filled to the designed water level and the designed pressure, the double-loop cooperative control comprises inner-loop energy control and outer-loop liquid level control, the inner-loop energy control is based on the law of conservation of energy, the heat requirement is met by adjusting the steam mass flow, and the stable heating rate is ensured; the outer ring liquid level control is based on the law of conservation of mass, and accurate liquid level adjustment is achieved by adjusting the water replenishing mass flow and restraining the water flow change rate at the same time. Through fusion of a mechanism model and double-loop control, an accurate, efficient and safe intelligent solution is provided for filling of the mobile heat supply vehicle, and thermotechnical control is promoted to be upgraded from experience driving to model driving.

This invention discloses a dual-phase-change coupled intelligent control method and system for battery immersion cooling, relating to the field of intelligent battery cooling technology. The dual-phase-change coupled intelligent control method and system includes: S1, collecting and preprocessing temperature data and operational characteristic data to construct a standardized thermal state dataset; S2, evaluating the stability of the boiling state and dynamically adjusting the local channel liquid supply rhythm; S3, analyzing the melt state of the composite phase change material's melt coverage and driving changes in the auxiliary condenser's start-stop strategy; and S4, constructing a main-auxiliary dual-loop control structure to adjust the operating intensity of the main circulation pump and the bidirectional pump in real time. This solves the problem that existing liquid cooling systems have limited sensible heat capacity and uncontrolled boiling phase change processes when facing high-frequency, high-rate charge-discharge cycles, making it difficult to achieve precise peak-shaving control of heat in the core battery region.

The invention relates to the technical field of vehicle safety, and discloses a safety verification method based on upgrading of a double-loop controller of a new energy vehicle, and the method comprises the steps: triggering a safety upgrading process when any vehicle controller serves as a to-be-upgraded main controller, and receiving an upgrading instruction; the main controller and a pre-configured monitoring controller corresponding to the main controller carry out progressive interaction security verification on the upgrading instruction; after the progressive interaction security verification is passed, the main controller autonomously writes new firmware into a firmware storage area of the main controller so as to finish upgrading; and the monitoring controller carries out dynamic monitoring intervention on the upgrading process of the main controller and cooperates with function verification of the main controller. According to the invention, the method focuses on the safety guarantee of the firmware upgrading process, and achieves the distributed, high-reliability and deep-cooperation safety upgrading of the new energy vehicle under the architecture of the double-loop controllers through the architecture innovation and the dynamic interaction and verification between the double-loop controllers.

The application discloses a guide vane and power angle double-loop coordinated feedback control method of one-pipe multi-machine hydroelectric system, relates to the technical field of hydroelectric unit control, and comprises the following steps: S1, a nonlinear model under the elasticity of water hammer of one-pipe multi-machine is constructed, and a guide vane opening degree and a power angle are selected as double-loop control objects; S2, the double-loop control objects are introduced into original guide vane and power angle control models as additional negative feedback items to obtain a double-loop coordinated feedback control model; S3, a coordinated control theory is introduced, a plurality of guide vane opening degrees and power angles of the multiple units are selected to form guide vane control macro variables and power angle control macro variables respectively, and derivatives are calculated respectively; and S4, the guide vane control macro variables and the derivatives, the power angle control macro variables and the derivatives are substituted into a coordinated control convergence flow field respectively to obtain guide vane and power angle control laws, namely additional negative feedback items, and system control is realized. The application establishes the connection of the multiple units, realizes the timely feedback of the guide vane and power angle changes of the units through the double-loop form, and makes the control effect more optimal.