38results about How to "Optimal Control Parameters" patented technology

The invention discloses a method for self-adjusting control parameters of a speed ring of a permanent magnet synchronous motor based on fractional orders. An integer-order proportional integral (PI) controller in an alternating current servo system of the permanent magnet synchronous motor is replaced by a fractional-order PI controller, parameters of the fractional-order PI controller are automatically adjusted, and the alternating current servo system of the permanent magnet synchronous motor can be controlled. The method specifically comprises the following steps of: firstly, acquiring current and speed signals of the alternating current servo system; secondly, identifying a speed ring controlled object model of a permanent magnet synchronous motor servo system according to the acquired signals, and identifying the parameters of the model; and finally, optimally adjusting the control parameters, and thus obtaining optimal control parameters. According to the method, the original integer-order PI controller is replaced by the fractional-order PI controller, and the parameters of the controller are automatically adjusted; the parameters of the controller are optimized by using a pattern search algorithm; and the adjusted parameters of the controller are high in robust, high in anti-disturbance capacity and high in control accuracy.

The invention discloses a PDFF-based AC servo driver control parameter self-tuning method. Firstly, current and speed signals required for identifying an AC servo system model are acquired; secondly, according to the acquired signals, a speed loop controlled object model of a permanent magnet synchronous motor AC servo driving system is identified and parameters of the model are identified; and finally, according to the parameters and performance indexes of the model, searching optimization tuning is performed on control parameters of a servo driver so that the optimal control parameter is acquired. According to the self-tuning method, a PDFF controller is utilized to substitute a conventional PI controller on a speed loop of the servo driver and the parameters of the controller are automatically tuned. The model of the controlled object is identified by the self-tuning method by utilizing a recursion least square method. Then according to the feasible performance indexes, searching optimization is performed on the parameters of the controller by utilizing a mode searching algorithm, and the optimal control parameter is obtained so that the servo driving system can be great in anti-disturbance capability, control precision and robustness.

The invention relates to an intelligent adjusting system of in-vehicle air quality and an application method thereof. The system comprises an air quality detecting unit, an air quality adjusting unit and a data processing control unit. The air quality detecting unit comprises a concentration detector of pollutants inside and outside a vehicle; the air quality adjusting unit comprises a vehicle-mounted air conditioner and a vehicle-mounted air purifier; the data processing control unit comprises a processor and a wireless control terminal; and the processor and the wireless control terminal are connected through an internet of things technology. Controllers input travel parameters through the wireless control terminal; the parameters are transmitted into the processor through networking; the processor calculates optimal operation parameters of the air quality adjusting unit through a pre-built calculation model and data input by the air quality detecting unit and the air quality adjusting unit, and returns and performs an instruction to realize intelligent adjustment of the in-vehicle air quality. The system can detect the pollution level of the pollutants inside and outside the vehicle in real time, optimally adjusts the operation parameters of the vehicle-mounted air conditioner and a vehicle-mounted air filter, and improves the in-vehicle air quality. The adjusting system has such characteristics as advanced and reasonable settings, realization of automatic control, complete functions and simple and fast operation.

The invention discloses a fast self-learning improved ADRC control method for a non-linear system, which comprises the following steps: S1, creating an active disturbance rejection controller (ADRC) which includes a tracking differentiator (TD) part, an extended state observer (ESO) part, a non-linear state error feedback (NLSEF) part and a disturbance compensation part, wherein S1 includes S11, establishing a tracking differentiator (TD) control model, S12, establishing an extended state observer (ESO) control model, S13, establishing a non-linear state error feedback (NLSEF) control model, and S14, establishing a disturbance compensation control model; S2, creating a self-learning active disturbance rejection controller (SADRC): applying a self-learning method to the non-linear state error feedback (NLSEF) control model to establish a self-learning non-linear active disturbance rejection control system model; and S3, creating a fast self-learning active disturbance rejection controller (FSADRC): designing a learning rate oriented adaptive mechanism by using an additional momentum term method and establishing a fast self-learning model based on dynamic adaptive learning rate.

The invention provides a flight control method of a QUAV. The method comprises the following steps that S10) a dynamical model and a dynamic equation of the QUAV are established; and S20) a compound control based control manner is designed to control four independent control channels converted from the dynamic equation in the step S10), control manners for the four channels include height PID, tumbling ADRC, pitching ADRC and yaw EACS-PID respectively, and conversion of control quantities is controlled to adjust the rotating speed of the four rotors and further achieve attitude control. Via the method of the invention, the QUAV adapts to the external environment change, yaw EACS-PID can realize adaptive adjustment of control parameters, tumbling ADRC and pitching ADRC can resist to interference more actively, height PID can be used to maintain high anti-interference capability and robustness and avoid the process from being too complex, the processor load of the QUAV is reduced, and the operation efficiency of hardware is improved.

The invention provides automatic control laser operation equipment and a treatment method thereof. The equipment consists of a master controller, a monitor, a CCD camera, a laser, a light source, a master bracket, a cantilever, a hanging operation treatment head, a microscope observing system and a microscope operation adapter. The master controller recognizes and processes the image and spectrum of the focus tissue and the normal tissue collected by the CCD camera, and then gives out orders to control the work of the laser accordingly, thus avoiding operation mistakes caused by normal tissue damage due to incorrect manipulation in laser operation; the master controller gives out orders to control the start and close of the laser and to correct the amount of laser output; a optical lens group forms a light path; and the microscope observing system, microscope inspection glass, the CCD camera and the microscope operation adapter are integrated into a whole by the optical lens group. The invention has simple structure, reasonable design and simple and easy operation; the normal tissue is not damaged while the focus tissue is removed in the operation; the invention is characterized in that the equipment has a plurality of control modes; the parameters are adjustable; the application is wide. The invention can precisely control the operation extent and improve the treatment effect.

The invention discloses a ball type hot blast stove burning process control method and system. The method comprises the steps that the optimal air-fuel ratio is obtained through matching based on hot blast stove burning historical data; a hot blast stove regenerative chamber transient heat transfer model is established according to stove inner gas-solid two-phase heat transfer and a process structure; temperature predicting models are established based on the hot blast stove regenerative chamber transient heat transfer model and include the vault temperature predicting model and the waste gas temperature predicting model; and the optimal control parameters for controlling the hot blast stove burning process are obtained in real time based on the temperature predicting models. The technical problem that the hot blast stove burning process is hard to control precisely in real time in the prior art is solved. By analyzing the ball type hot blast stove burning process, the air-fuel ratio is controlled from the data perspective according to a field process, the coal gas flow rate is controlled form the mechanical perspective, the air-fuel ratio and the coal gas flow rate are caused to reach the optimal values at the same time, in addition, the optimal coal gas flow rate is optimized in real time based on the matched optimal air-fuel ratio, and the hot blast stove burning process can be precisely controlled in real time.

The invention relates to self-control laser surgical equipment, which consists of a main controller, a display, a charge-coupled device (CCD) camera, a laser, light source equipment, a main bracket, a cantilever arm, a suspension surgical treatment head, a microscopic observation system and a microscopic surgical adapter. The main controller recognizes and processes images and light spectrums of focal tissues and normal tissues acquired by the CCD camera and correspondingly send a command to control the operation of the laser so as to prevent faulty operation of a laser surgery from damaging the normal tissues and making a surgery mistake; the main controller sends a command to control the startup and shutdown of the laser and modify laser output; an optical lens group forms a light path; and the microscopic observation system, a microscopic observation mirror, the CCD camera and the microscopic surgical adapter are integrated with one another through the optical lens group. The equipment has the advantages of simple structure, reasonable design, simple and easily-grasped operation, capability of eliminating the focal tissues without damaging the normal tissues in a surgery process, various control modes, adjustable parameter, wide application and capability of accurately controlling the number of surgeries and improving treating effect.

The invention discloses a special efficient data-driven internal-model polynomial controller for industrial processes. The special efficient data-driven internal-model polynomial controller is characterized in that an integral control structure with polynomial and internal-model functions is designed, an error series [e(k)] is inputted into a polynomial controller, a series [u(k)] is outputted by the polynomial controller, the structure is shown as an equation, and a<0>-a<n> and b<1>-b<n> are coefficients to be determined; parameters of a internal-model polynomial controller are optimized by means of data-driven stochastic approximation. The special efficient data-driven internal-model polynomial controller has the advantages that the essence of simplicity and practicality of a PID (proportion, integration and differentiation) controller is inherited, shortcomings of single structure and low error utilization efficiency of the PID controller are overcome, the PID controller is developed into the structure-variable internal-model polynomial controller, dependency on a mathematical model of a controlled object is omitted, and an internal-model driving function is directly added into the internal-model polynomial controller on the basis of data by the aid of a stochastic approximation principle; an internal-model compensation function can be automatically started specifically for a process with obvious large lag, stochastic approximation is synchronously performed on parameters of the internal-model controller and the parameters of the polynomial controllers, and the optimal control parameters can be obtained.

The invention discloses a self-detection method for voice coil motor parameters. The method comprises steps: a control chip is connected with the voice coil motor through a control interface, and through controlling the current inside the voice coil motor, the control chip pushes the motor to different positions; the coil in the voice coil motor performs magnetic line cutting movement on the magnetic field inside the voice coil motor, an induced electromotive force is generated at two ends of the coil, and induced voltage is obtained; the control chip automatically detects the induced electromotive force; and the control chip measures and calculates the parameters of the voice coil motor according to the detected induced electromotive force. The motor parameters are detected by the chip, the motor parameters do not need to be tested by a client, each chip is corresponding to one motor, and each motor is ensured to have the optimal control parameters; and the chip can detect the motor parameters in real time, and the phenomenon that parameter change is caused by the time lapse when the motor is used and the stability effects are caused to be weak can be avoided.

The invention is glaucoma filter automatic controlled laser operator for curing glaucoma. The system is made up of software and hardware; the hardware is made up of laser, guiding light laser, image picking device, mechanism frame and computer, the guiding laser is assembled in the box of primary laser, the laser knife of the primary laser is connected with the image picking device through mechanical frame, and it is connected to the computer through interface card or interface circuit; the work of each hardware is connected by software. It uses image picking device to acquire the image information of the focus part, and monitors the operation process in real-time; the system combines the active control and the feedback control, monitors the operation process in real-time and shuts off the laser automatically after the operation has been completed, it can acquires the best working parameter, and reduces the damage to the lowest effectively.

The invention relates to a black liquor combustion optimizing control system, comprising an input interface module, an input isolation module, an A / D conversion module, an algorithm module, a processor module, a D / A conversion module, an output isolation module and an output interface module which are sequentially connected. The input interface module acquires signals of furnace negative pressure, furnace temperature and black liquor flow in a black liquor incinerator and smoke oxygen concentration. The acquired signal is process by the isolation module and conversion module and then is sent to the processor module. The processor module calls a mathematical model of the algorithm module, the acquired signals are calculated, analyzed and processed, the processed data is stored and output, and the output data controls primary blowing rate, secondary blowing rate, tertiary blowing rate and black liquor flow by virtue of the conversion, output isolation and output interface modules, so as to realize optimal combustion of black liquor incinerator. By adopting the system, combustion efficiency of black liquor incinerator can be further improved, energy consumption can be reduced, and pollutant emission can be reduced; meanwhile service life of incinerator is prolonged, and economic benefit and environmental benefit of alkali recovery plant.

The invention relates to a vibration damping control method and device for a hybrid electric vehicle. The method includes the steps of collecting vibration signals in three directions when the vehicleis at a standstill state, and calculating a combined phasor amplitude of the vibration signals in the three directions; determining whether the combined phasor amplitude is less than the set amplitude threshold or not, and if the combined phasor amplitude is not less than the set amplitude threshold, determining whether the engine rotating speed is related to the vehicle speed or not; if the engine rotating speed is not related to the vehicle speed, selecting at least one power adjustment strategy for power adjusting, and finding out corresponding overall vehicle control parameters enabling the combined phasor amplitude of the vehicle in the three directions to be minimum in the power adjusting process; and using the corresponding overall vehicle control parameters enabling the combined phasor amplitude of the vehicle in the three directions to be minimum to control a vehicle power system. By means of the vibration damping control method and device, closed loop control of signal detection and control optimization is formed by organically combining vibration detection and optimization control, the optimization cycle is better shortened, and the optimization effect is improved.

The invention discloses a ventilation system for nursing and disinfection. Air enters a main pipeline through a compressor at a ventilation inlet; a filter, a jet flow atomizer and a buffer chamber are sequentially arranged on the upstream of the main pipeline; a humidifier, an ion generator, an air ion meter, an impactor, a vacuum pump, an air ion meter and an anemometer are sequentially arranged on the downstream of the main pipeline; the air is discharged into a ward through an air supply grille; and a heater, a controller and a centrifugal fan are arranged in the buffer chamber. By using the ventilation system disclosed by the invention, optimal control parameters are obtained according to effect evaluation indexes of the steady state simulation and the transient simulation, and the controller transmits the optimal control parameters to each control component for layered ventilation, so that the exposure risk of medical staff in a hospital ward can be greatly reduced.

The invention relates to an operational optimization method for nitration and nitrosation processes, and belongs to the technical field of wastewater biotreatment. The method comprises the following steps of: construction of a dynamic control system: according to parameters involved in a two-step nitration process of NH4+ / -N->NO2--N and NO2--N->NO3--N, establishing kinetic models of the nitrosation and nitration processes; according to characteristics of substance change, a reactor flow state and a reactor unit involved in the nitration process, establishing a material balance equation set of the whole nitration process; in combination with the kinetic models and the material balance equation set, constructing the dynamic simulation control system for the simulated nitration process; and simulation operation: obtaining the parameters involved in the nitration process in the kinetic models of the nitrosation and nitration processes, substituting the parameters into the dynamic simulation control system, and performing operation to obtain nitrosation and nitration reaction results. The method quantitatively describes the nitration process of ammonia nitrogen in a wastewater treatment process and accurately simulates the two-step nitration process.

The invention provides an application method and system of an internet based mathematical model for controlling production. The application method comprises: running a mathematical model control module in parallel with a process control module that controls the production process online based on the internet, wherein the production process is still actually implemented by the process control module; and running the mathematical model control module in contrast to the process control module in the process of parallel online operation, and switching to the state where mathematical model controlmodule actually controls the production process for running when the mathematical model control software is improved and practical. The application method and system of the internet based mathematicalmodel for controlling production adopts the process control module to assist the mathematical model control module, and finds the optimal control parameter for the control system by switching and alternately using the two control modes on the Internet, so that the process system is always in an optimal state when dealing with changes.

The invention relates to a preparation method of low-molecular-weight halogen flame-retardant polycarbonate, which is characterized by comprising the following steps: a. adding polyhalo bisphenol A into a sodium hydroxide solution-haloalkane mixed system, completely dissolving by stirring at normal temperature, and meanwhile, adding a catalyst; b. introducing phosgene, meanwhile, dropwisely adding a sodium hydroxide solution to keep the pH value of the system at 7-14, and carrying out prepolymerization reaction at 0-20 DEG C for 0.2-1.5 hours; c. increasing the reaction temperature to 10-40 DEG C, adding a blocking agent, and meanwhile, dropwisely adding a sodium hydroxide solution to keep the pH value of the system at 7-14; d. after the reaction finishes, standing to stratify to obtain an organic phase, adding fatty alcohol, washing to obtain a white solid, filtering, and drying to obtain the product. By strictly controlling the prepolymerization and polycondensation reaction temperatures and the pH value of the reaction system, the synthesized product has small fluctuation of the molecular weight, and the molecular weight can be fixed within a certain range. The synthesis technique has the advantages of short period, simple operating technique and high efficiency.

The invention relates to an optimizing, energy saving and carbon reducing method of a DCS (Distributed Control System) for papermaking. A DCS is adopted. Firstly, according to the types of raw materials, the performance characteristics of a product, the speed of a paper machine and the like, the pulping concentration, the pulping current, the optimal pulping concentration of starting of a disc mill, the ratio of a core layer and the ratio of a surface layer to a bottom layer are reasonably controlled, and then the DCS is used for controlling different pulping power distribution and disc mill series connection modes; a pulping result is comprehensively analyzed to obtain related data; the data is fed back to the DCS control for comprehensive processing to obtain optimized data; and finally, the DCS makes adjustment according to the optimized data to control different pulping power distribution and disc mill series connection modes, and optimization, energy conservation and carbon reduction of the DCS for papermaking are achieved. Compared with the prior art, the DCS control system is comprehensively applied and optimized according to relevant characteristic parameters and consumption data of raw materials of the paper machine, so that the optimal strength performance of paper under the condition of lowest energy consumption is achieved, and optimization, energy conservation and carbon reduction of the papermaking system are achieved.

The invention discloses a method for self-testing parameters of a voice coil motor. The method comprises: a control chip is connected with the voice coil motor through a control interface, and the control chip drives the motor to different positions by controlling the current inside the voice coil motor; The coil will cut the magnetic field line of the magnetic field inside the voice coil motor, and the induced electromotive force will be generated at both ends of the coil to obtain the induced voltage; the control chip will automatically detect the induced electromotive force; the control chip will measure and calculate the parameters of the voice coil motor according to the detected induced electromotive force. . The chip of the present invention detects the motor parameters without requiring the customer to test the motor parameters. Each chip corresponds to a motor, ensuring that each motor has its optimal control parameters; The parameter changes will lead to the weakening of the stabilization effect.

The invention relates to an air conditioner and a control method thereof. The control method comprises the steps of collecting crowd information, season information and human body comfort level relevant parameters, computing control parameters of the air conditioner through a corrected PMV equation, controlling the air conditioner through the control parameters, so as to ensure that PMV is equal to 0, and human body optimum comfort state is achieved. Corrected parameters of the corrected PMV equation are measured through experiments in advance according to different regions and crowds, so that the air conditioner can be applied to different regions and crowds, can rapidly and accurately reach human body optimum comfort state of corresponding regions and crowds, and saves resource.

The invention discloses a structural vibration active control method based on non-probability interval confidence reliability, and designs an active vibration control system capable of being automatically adjusted, and the system is improved on the basis of an original open-loop control system according to the uncertainty of structural parameters; according to the double-reliability-index calculation method based on reliability and confidence, vibration suppression algorithm research is conducted on the premise that structural parameters are uncertain on the original basis, and the confidenceindex is introduced, so that the designed active vibration control system capable of being automatically adjusted can improve the reliability of the structure. The feasibility of the active vibrationcontrol system capable of being automatically adjusted is verified through a continuous model and a discrete model, and the control method can be used for designing the active control system of an uncertain structure in the future.

The invention discloses a power take-off vehicle-mounted power supply system realized by a direct-current voltage sampling circuit. The power take-off vehicle-mounted power supply system comprises a rectifier diode, a direct-current capacitor, an inverter circuit, a controller, an excitation power supply and a small-capacity direct-current sampling circuit, wherein the rectifier diode receives alternating current generated by the generator, rectifies the alternating current into pulsating direct current and outputs the pulsating direct current to the direct current capacitor; the direct-current capacitor is used for filtering the received pulsating direct current to obtain straight direct current and outputting the straight direct current to the inverter circuit; the inverter circuit is used for inverting the straight direct current into stable alternating current under the control of the controller so as to be used by an external load; and the small-capacity direct-current sampling circuit collects the voltage of alternating current generated by the generator in real time and converts the voltage into sampling direct current. According to the invention, the light load stability and the feedback rapidity are improved.

The invention relates to a vibration damping control method and device for a hybrid electric vehicle. The method includes the steps of collecting vibration signals in three directions when the vehicleis at a standstill state, and calculating a combined phasor amplitude of the vibration signals in the three directions; determining whether the combined phasor amplitude is less than the set amplitude threshold or not, and if the combined phasor amplitude is not less than the set amplitude threshold, determining whether the engine rotating speed is related to the vehicle speed or not; if the engine rotating speed is not related to the vehicle speed, selecting at least one power adjustment strategy for power adjusting, and finding out corresponding overall vehicle control parameters enabling the combined phasor amplitude of the vehicle in the three directions to be minimum in the power adjusting process; and using the corresponding overall vehicle control parameters enabling the combined phasor amplitude of the vehicle in the three directions to be minimum to control a vehicle power system. By means of the vibration damping control method and device, closed loop control of signal detection and control optimization is formed by organically combining vibration detection and optimization control, the optimization cycle is better shortened, and the optimization effect is improved.

The invention discloses a fast self-learning improved ADRC control method for a nonlinear system, which includes the following steps: Step 1: Create an ADRC: the ADRC includes a tracking differentiator (TD), an expanded state Four parts of observer (ESO), nonlinear error feedback (NLSEF) and disturbance compensation; step 11) establish tracking differentiator (TD) control model; step 12) establish extended state observer (ESO) control model; step 13) establish Nonlinear error feedback (NLSEF) control model; Step 14) Establish a disturbance compensation control model; Step 2: Create a self-learning active disturbance rejection controller (SADRC): apply the self-learning method to the nonlinear error feedback (NLSEF) control model , establish a self-learning nonlinear ADRC control system model; Step 3: Create a fast self-learning ADRC (FSADRC): use the method of adding momentum to design an adaptive mechanism for learning rate, and establish a dynamic adaptive Fast self-learning model with learning rate.

The invention provides automatic control laser operation equipment and a treatment method thereof. The equipment consists of a master controller, a monitor, a CCD camera, a laser, a light source, a master bracket, a cantilever, a hanging operation treatment head, a microscope observing system and a microscope operation adapter. The master controller recognizes and processes the image and spectrumof the focus tissue and the normal tissue collected by the CCD camera, and then gives out orders to control the work of the laser accordingly, thus avoiding operation mistakes caused by normal tissuedamage due to incorrect manipulation in laser operation; the master controller gives out orders to control the start and close of the laser and to correct the amount of laser output; a optical lens group forms a light path; and the microscope observing system, microscope inspection glass, the CCD camera and the microscope operation adapter are integrated into a whole by the optical lens group. Theinvention has simple structure, reasonable design and simple and easy operation; the normal tissue is not damaged while the focus tissue is removed in the operation; the invention is characterized inthat the equipment has a plurality of control modes; the parameters are adjustable; the application is wide. The invention can precisely control the operation extent and improve the treatment effect.