73results about How to "Accurate control parameters" patented technology

The invention provides a sewage treatment process optimization and energy-saving control system and a sewage treatment process optimization and energy-saving control method. The sewage treatment process optimization and energy-saving control system comprises a computer, an upper computer, an executing mechanism, more than one on-line monitoring instrument and more than one piece of water quality adjusting equipment, wherein the more than one on-line monitoring instrument is used for acquiring a water quality parameter of treated sewage; and the more than one piece of water quality adjusting equipment is used for adjusting the water quality parameter of the sewage. By acquiring sewage treatment field data, performing simulation treatment on the field data through a simulation model and calculating through a control model, a control signal is obtained to control the operation state of the water quality adjusting equipment so as to form a feed forward-feedback-control model calculation-execution artificial intelligent closed-loop control loop; and the water quality parameter which meets the process requirements can be calculated, and accurate control is performed on the parameter of the sewage water quality process, so that a sewage treatment process optimization and energy-saving effect is achieved.

The invention belongs to plastic sucking equipment and the technical field of a plastic sucking process, and relates to a plastic sucking production line. The production line comprises two mutually-parallel guide rails of which the opposite side is provided with an opening, wherein an annular conveying device for conveying sheet raw materials is arranged in the opening of each guide rail; a heating drying oven, a plastic sucking molding and in-mould die cutting device, a punching device and a stacking device are sequentially arranged between the two guide rails from one side to the other side; the heating drying oven is in an annular sealing type; and the plastic sucking molding and in-mould die cutting device has an integral structure. The plastic sucking production line comprises the production process of preparation, heating, molding, die cutting, stacking and discharging. The plastic sucking production line has the advantages of simple structure, high utilization factor of the raw materials, simple, convenient and quick operation, high automaticity, capability of saving electricity by over 65 percent and replacing required product dies according to the requirements of producing different products and wide application.

An simplified structure of an air-fuel ratio control system for an internal combustion engine includes an upstream and a downstream catalytic device installed in an exhaust pipe of the engine and a first, a second, and a third air-fuel ratio sensor installed in upstream or downstream side of the exhaust pipe. The system also includes a first feedback controller working to bring a value of the air-fuel ratio, as measured by the first air-fuel ratio sensor, into agreement with a target one and a second feedback controller working to sample values of the air-fuel ratios, as measured by the second and third air-fuel ratio sensors, to correct a predetermined controlled parameter in the feedback control of the first feedback controller.

Disclosed are a grouting pipe for a miscellaneous fill stratum and a construction method. The grouting pipe is mainly composed of an external grouting pipe body, an internal grouting pipe body, a slurry stop plug, a segment spacer ring and a sealing plug, wherein one end of the external grouting pipe body and the surface of the pipe body are provided with grouting holes; the internal grouting pipe body is fixed to the segment spacer ring through the slurry stop plug; a grouting hole is formed in the top end of the internal grouting pipe body, and grouting holes are evenly distributed around one end of the pipe body; the bottom end of the internal grouting pipe body is connected with a grouting machine through a mortar conveying pipe; the segment spacer ring is fixed to the inner wall of the external grouting pipe body. The grouting pipe has the characteristics of low pressure, high frequency, segmentation and quick grouting, thereby accurately controlling the grouting pressure and grouting parameters for the complex situations of miscellaneous fill stratums containing large gravel or building rubbish; a grouting curtain within a certain range is formed in the stratum, greening vegetation over the stratum is not affected, and the purpose of effectively reinforcing the miscellaneous fill stratum is achieved. The grouting pipe is convenient to use, conducts grouting quickly and can be widely applied to miscellaneous fill stratums needing reinforcing.

An efficiency-optimized power supply control method based on genetic algorithm is disclosed. The method is based on a control system comprising a Buck-Boost circuit of a preceding stage, a LLC voltageregulating circuit of a subsequent stage, a sampling circuit, a sampling amplification isolation circuit, and a control circuit with a microcontroller as a control core . Samples are taken to obtainthe evaluation factors of the system efficiency, including the output voltage Vo and the output current Io of the subsequent stage, and the input voltage Vin and the input current Iine of the preceding stage. The genetic algorithm module evaluates the influence of the control parameters on the efficiency by using different calculation parameters k, and finally iterates to obtain the calculation parameter k which is most suitable for the system, so that the system efficiency can be optimized. A look-up table (LUT) is used to record the switching dead time of the upper and lower transistors in the LLC topology circuit corresponding to the load and output voltage when the system load changes. This allows for direct lookup and reading of the corresponding dead time when the load is switched.

The invention provides an urban manure disposal method. According to the method, on one hand, harmless disposal can be performed on manure; on the other hand, phosphorus element in the manure can be recovered. After the manure passes through a manure unloading slot, a coarse grid and a solid-liquid separation integrated machine, manure slurry filtrate can form a mud cake with the solid content of 35-45% after being subjected to flocculation and dehydration treatment, the mud cake can be used as an agricultural fertilizer and can also be used for recovering phosphorus, liquid produced during the treatment process is fed into a sewage treatment plant to be treated, and disgusting odor can be treated specially.

The invention relates to a strip steel tension stabilizing device in an annealing furnace on a continuous annealing line. A swing frame is articulated with a base. Two fixed steering rollers which are separated at intervals are arranged on the base. A motor is fixed on the swing frame. A bearing base is arranged on the surface of the swing frame. An output shaft of a reducer is connected with a regulating screw. Guiding rods are arranged on the two sides of the regulating screw. A slider is connected with the regulating screw in a screwing way. The slider is connected with the guiding rods in a sliding way. A lifting guidance roller is arranged on the swing frame. A horizontal displacement sensor is fixed on the bearing base. The end part of a telescopic link of the horizontal displacement sensor is connected with the slider. The lower end of a guiding board is articulated with the base by a lower fixed shaft. A vertical displacement sensor is fixed on the guiding board. An upper fixed shaft is fixed on the swing frame. The end part of a telescopic link of the vertical displacement sensor is arranged on the upper fixed shaft. The strip steel tension stabilizing device in the annealing furnace on the continuous annealing line realizes the real-time detecting control on the tension changes in the annealing furnace and provides accurate control parameters for controlling the stability of the strip steel tension in the furnace.

The invention provides a control method for inhibiting a self-adaption waveform of an inversion system low-frequency ripple, wherein the same low-frequency ripple components are added into voltages of two capacitors at an output end of a differential inverter, the difference of the voltages is a sinusoidal waveform which is required by inversion, the current expression of a direct current side is calculated through a ripple transmission mechanism, the low-frequency ripple of the current of the direct current side is zero, accordingly, the amplitudes and phases of the low-frequency ripple components which are added into the voltages of the two capacitor are obtained, and the waveforms of the differential capacitor voltages are formed; and moreover, along with the load variation, the waveforms of the differential capacitor voltages are varied in a self-adaption manner, so powers which pass by the two capacitors include the ripple part of the output power, the direct current side only needs to provide the direct current average part of the output power, and accordingly, the influence of the low-frequency ripple on a direct current input power supply is inhibited.

The invention relates to an experimental system for intelligent penetration sampling and on-line monitoring for soil and underground water pollutants. The system comprises a system control center, a peristaltic pump, integrated transducers, an electromagnetic vibration handle, a filler column, a fraction collector, an on-line real-time monitoring system and other connecting devices or containers. A computer is adopted as the control center. The multi-path peristaltic pump can control a plurality of water feeding hoses. Inlet and outlet ends of the filler column are provided with the integrated transducers. The fraction collector collects a certain amount of samples at regular time. The on-line real-time monitoring system can measure system critical parameters. A pollutant penetrating device provided by the invention can stimulate complex reaction situations and macroscopic and microcosmic migration mechanisms among pollutants, colloid and solid-phase media in saturated or unsaturated soil and underground water, and performs qualitative and quantitative analysis and completes mapping of related graphs and charts through monitoring in real time chemical and physical properties of a target solution before and after penetrating the filler column and monitoring critical parameters of a filtrate liquid after penetration. Measurement is convenient and easy in operation.

The invention discloses an automatic steam curing device and method for cement linings of nodular cast iron pipes, and belongs to the technical field of cast iron pipe production. The automatic steam curing device for the cement linings of the nodular cast iron pipes comprises a curing furnace, a control cabinet and an operation box provided with a human-computer interface. A pressure sensor and an electric control valve are sequentially arranged on a steam pipeline in the steam conveying direction, wherein the steam pipeline is used for conveying steam into the curing furnace. A temperature sensor and a humidity sensor are arranged in the curing furnace. The control cabinet comprises an analog quantity output module, an analog quantity input module, a CPU module and a power module. The steam curing method for the cement linings of the nodular cast iron pipes comprises the steps of natural curing, a low-temperature rise stage, a low-temperature preservation stage, a high-temperature rise stage, a high-temperature preservation stage and a temperature-fall stage. According to the automatic steam curing device and method for the cement linings of the nodular cast iron pipes, steam curing parameters are accurately controlled, the curing quality of steam curing for the cement linings of the nodular cast iron pipes is improved, the full-automatic operation of the steam curing for the cement linings of the nodular cast iron pipes is achieved, and the labor intensity of staff is relieved.

The invention discloses a method and system for testing the control parameters of a servo system of a gas turbine speed regulator. According to the method, a test function module and a data collection module are additionally arranged on a servo system input element in control logic to test displacement sensor signals indicating the displacement of a fuel valve, wherein testing is carried out in a parallel connection mode and does not influence an original control system loop. By testing switching between the test function module and a test switch and carrying out testing and data analysis on the displacement signals of the fuel valve, the accurate control parameters of the servo system of the gas turbine speed regulator can be obtained, and the accuracy of simulation model parameters of the gas turbine speed regulator and the reliability of model verification can be improved. By means of the method and system, testing of the control parameters of the servo system of the gas turbine speed regulator can be comprehensively and quickly completed, networking detection, leave-factory check and acceptance detection and daily maintenance detection of the servo system of the gas turbine speed regulator can be achieved, the servo system of the gas turbine speed regulator can operate safely, reliably and stably in a power grid, and the demand for stable calculation and analysis of the power grid can be met.

The invention provides a solar photovoltaic power station operation and maintenance management system and method. The operation and maintenance management system comprises a cloud storage control platform, a plurality of field solar panels and a field remote terminal unit. The on-site remote terminal unit sends collected on-site light intensity signals and on-site wind speed information to the on-site edge computing terminal. The on-site edge computing terminal preprocesses the on-site light intensity signal and the on-site wind speed information and then sends the on-site light intensity signal and the on-site wind speed information to the cloud storage control platform; the cloud storage control platform generates an operation and maintenance control signal by using the geographic information database and the real-time weather database based on the preprocessed field signal and sends the operation and maintenance control signal to a field control device; and the field control devicecontrols the state change of the field solar panel based on the operation and maintenance control signal. According to the technical scheme of the invention, the method can achieve the timely mastering of the on-site parameter change of the photovoltaic power station and the data difference provided by the real-time cloud, and selects the correct adjustment and control parameters for operation andmaintenance control.

The present disclosure relates to a method and system to facilitate temperature-aware redistribution of power in a power sourcing device comprising plurality of ports. The method can include monitoring, by using one or more sensors coupled to the power sourcing device, a first temperature associated with a first port of the plurality of ports to obtain a first set of signals and executing, at the power sourcing device, based on a second set of signals obtained from the first set of signals, a first set of instructions associated with redistribution of power from the first port to second port of the plurality of ports, wherein the second set of signals can indicate exceeding of the first temperature above the predefined threshold temperature value.

The invention provides a tracking system and method for a sun tracker. The method comprises the following steps: firstly, performing the individual optimization according to sample data through a GA sample data preprocessing module to obtain the individual with the greatest adaptability and sending the individual to a BP network adjustment module as the optimal initial value for training; based on the optimal initial value and through the reverse transmission of the BP network adjustment module, adjusting the weights and thresholds of the hidden layer and the output layer to enable the obtained error evaluation function to be smaller than the set error threshold to obtain adjusted P, I, D parameters; and the BP network adjustment module sending the adjusted P, I, D parameters to a PID controller module, the PID controller module performing control according to two degrees of freedom, so as to enable the track performance and the anti-jamming performance to achieve the best respectively. The method combines the genetic algorithm with the neural network to make full use of the advantages of the two, so that the control system has the learning function, the robustness and the generalization ability of the neural network, and the global search optimization ability of the genetic algorithm.

The invention provides a method for improving absorption rate of a near infrared band of a vanadium oxide film. The method for improving the absorption rate of the near infrared band of the vanadium oxide film includes following steps: forming a plurality of cylindrical units which are arranged in a spare shape on the surface of the vanadium oxide film through one method among chemical corrosion, photo etching and impressing methods, forming photonic crystal structures staggered according to refractive indexes between the arrangement structure of the plurality of the cylindrical units and air, coupling incident waves into a Bloch wave mode in a plane by using coupling of a periodic structure for the incident waves, and thereby improving the light absorption rate of the vanadium oxide film on the near infrared band. Compared with a vanadium oxide film not in the photonic crystal periodic structure, the absorption rate of the vanadium oxide film prepared through the method for improving the absorption rate of the near infrared band of the vanadium oxide film is obviously higher than the vanadium oxide film not in the photonic crystal periodic structure in the wave band from 700nm to 1700nm.

The invention relates to the technical field of polyester fiber, in particular to a hydrophilic flame-resistant polyester fiber material and a preparation method thereof. The preparation method of thepolyester fiber comprises the steps of hydrophilic modification of pentaerythritol, preparation of hydrophilic copolyester slices, crystallization drying, POY spinning, stretching shaping and pore forming agent dissolution. The method is reasonable; the parameter is precisely controlled. Compared with the prior art, the material has the advantages that the hydrophilic performance, the moisture absorption performance and the flame resistance are greatly improved; the excellent limit oxygen index and moisture regain can be realized; the hand feeling is comfortable; the application of the material to the field of textile and garment can be expanded; the defect that the existing polyester fiber is difficult to simultaneously achieve the hydrophilic performance, the moisture absorption performance and the heat resistant and flame-resistant performance is overcome.

The invention discloses a synthetic diamond heating and power-regulating device, and the device comprises a control system, a monitoring host and at least one heating and power-regulating apparatus, wherein each heating and power-regulating apparatus is connected with the monitoring host through a communication module; the control system comprises a processor and a key module, a temperature measuring module and an electric energy control module which are connected with an input end of the processor, an output end of the processor is connected with a pressure regulating controller and an alarm apparatus, the monitoring host is used for receiving the temperature measurements sent by the processor and displaying the measurements on a display screen connected with the monitoring host, so as to remotely monitor whether each heating and power-regulating apparatus works well. The temperature measuring module arranged by the device provided by the invention can measure and display the temperature of the synthetic diamond during a synthetic process in real time, so that the processing of the synthetic diamond is more accurate than before; one monitoring host can remotely control a plurality of heating and power-regulating apparatuses at the same time, so that the processing efficiency of the synthetic diamond is effectively improved, and the intelligent degree is high.

The invention relates to an automatic gluing and tiling production line for producing a unit bathroom base plate. The automatic gluing and tiling production line comprises a production line body, a feeding module, a code scanning module, a cleaning module, a gluing module, a tiling module, a compacting and drying module, a seam beautifying module, a secondary cleaning module, a drying module and adischarging module, wherein the feeding module, the code scanning module, the cleaning module, the gluing module, the tiling module, the compacting and drying module, the seam beautifying module, thesecondary cleaning module, the drying module and the discharging module are sequentially arranged on the production line body. According to the automatic gluing and tiling production line for producing the unit bathroom base plate, the base plate is sent into the production line body after being checked and qualified by the feeding module, and is sequentially subjected to code scanning, cleaningand gluing; the feeding module moves floor tiles onto the production line body, and tiling, compaction and drying, seam beautifying, secondary cleaning and drying are sequentially carried out; and finally, discharging is carried out through the discharging module. The full-automatic production of the unit bathroom base plate is realized, the production efficiency is high, parameters and the like of each process are accurately controlled, and the forming quality of the unit bathroom base plate is ensured.

The invention provides an automatic tracking type solar photovoltaic power generation system and method. The solar photovoltaic power generation system comprises a plurality of solar photovoltaic conversion panels, a tracking control device for controlling the state change of the solar photovoltaic conversion panels, and a plurality of remote terminal units in different geographical directions. The remote terminal units are communicated with the tracking control device through a field edge computing unit. After the field edge computing unit receives weather parameter information sent by a far-end centralized control platform and field state sensing signal information collected by the plurality of remote terminal units, the tracking control device generates a tracking control instruction; the state change of the solar photovoltaic conversion panels is controlled based on the tracking control instruction; and the state change comprises angle change and height change of the solar photoelectric conversion panels. According to the technical scheme, accurate control parameters can be obtained to the maximum extent, and therefore accurate automatic tracking control is achieved.

The invention discloses an intelligent preheating mechanism for steel rail thermit welding. The intelligent preheating mechanism comprises a positioning clamping unit, an intelligent control system arranged on the positioning clamping unit and a combustion unit connected with the intelligent control system; the intelligent control system comprises a combustor, a control unit for controlling the combustor and a gas pipe connector communicating with the combustor; the combustion unit comprises an air inlet pipe communicating with the combustor, and a combustion nozzle communicating with the other end of the air inlet pipe; and the positioning clamping unit comprises a main support, a steel rail positioning and locking support which is arranged on the main support and used for locking the mechanism on a steel rail, a thermit welding sand mold locking device which is used for locking a thermit welding sand mold on the steel rail and a preheating position adjusting device which is used foradjusting positions of the combustion nozzle. According to the intelligent preheating mechanism, various parameters of the steel rail preheating can be strictly and accurately controlled, various factors easily causing poor preheating in the steel rail thermit welding preheating process are reduced or eliminated, and steel rail preheating effect is improved.

A customer submits a service application by accessing the home page of a service provider through a personal computer 3, and transmits the data including the operation amount and the control amount of a temperature controller 4 to a server 2 of the service provider. The server 2 accumulates the received data, and in accordance with the contents of the received service application, processes the accumulated data and provides the services of calculating the control parameter for the temperature controller 4, producing a model of the object of control and making a diagnosis by checking for a temperature control fault.

The invention discloses a vibration exciter, and belongs to the technical field of vibration machinery. The vibration exciter comprises an eccentric vibrator, a vibration excitation box (6) for accommodating the eccentric vibrator, a vibration excitation motor (8) for driving the eccentric vibrator to rotate, and further comprises a servo linear motion system (9) for adjusting the eccentricity ofthe eccentric vibrator, the eccentric vibrator comprises an outer eccentric body (1), an inner eccentric body (2) and a connecting shaft (5), the inner eccentric body (2) is connected with the connecting shaft (5) through a spiral groove and a boss structure matched with the spiral groove; the outer eccentric body (1) is connected with the connecting shaft (5) through a linear groove and a boss structure matched with the linear groove; and the servo linear motion system (9) is fixedly connected with the connecting shaft (5) in the axial direction, and the servo linear motion system (9) is rotatably connected with the connecting shaft in the peripheral direction of the surface. The vibration exciter can adjust the magnitude of exciting force at a static state or any rotating speed.

The invention belongs to plastic sucking equipment and the technical field of a plastic sucking process, and relates to a plastic sucking production line. The production line comprises two mutually-parallel guide rails of which the opposite side is provided with an opening, wherein an annular conveying device for conveying sheet raw materials is arranged in the opening of each guide rail; a heating drying oven, a plastic sucking molding and in-mould die cutting device, a punching device and a stacking device are sequentially arranged between the two guide rails from one side to the other side; the heating drying oven is in an annular sealing type; and the plastic sucking molding and in-mould die cutting device has an integral structure. The plastic sucking production line comprises the production process of preparation, heating, molding, die cutting, stacking and discharging. The plastic sucking production line has the advantages of simple structure, high utilization factor of the raw materials, simple, convenient and quick operation, high automaticity, capability of saving electricity by over 65 percent and replacing required product dies according to the requirements of producing different products and wide application.

The invention discloses a filament wick column horn cooling device, which comprises a middle air pipe and a side air pipe. The middle air pipe is provided with a middle air outlet aligned with the inner side of a wick column horn, the side air pipe is provided with a side air outlet aligned with the outer side of the wick column horn, and the middle air pipe and the side air pipe are communicatedwith an air supply system. The invention has the following beneficial effects that: (1) high-pressure air supply is simultaneously carried out on the inner and outer sides of the wick column horn mouth, tempered crystals are rapidly cooled, the hardness and strength of the horn mouth are ensured, the product is not easy to break and the rejection rate is low; (2) a plurality of air outlets are formed to uniformly supply air to the horn mouth, so that stress is not easily generated, and the horn mouth has good toughness; (3) an electromagnetic valve accurately controls air outlet related parameters, and stable quality is guaranteed; and (4) the structure is simple, the cooling efficiency is high and the cost is low.

A speed transforming transmission features that different speed transforming units based on one speed-variable transmission method can be used for different machines or vehicles. One of them can implement dual-parameter control to stepless centrifugal speed reducer for high load power and high speed ratio. Another one can be used for high-power multi-shift vehicle.

The invention discloses a primary frequency modulation control method and device based on water turbine simulation intelligent solution. The method comprises the following steps that a power given value P0 is obtained through a power given module; the target power generation module adds the given power P0 and the target power Pf of the primary frequency modulation to obtain actual target control power CP = P0 + Pf; measuring a current working water head H by a water head measuring module; the optimal opening degree under the same working condition is searched through a grey wolf optimization algorithm, and the optimization target is that the PID output value is the minimum; and after the optimal opening degree under the same working condition is obtained, a simulation model is formed through a GWO-BP neural network. The defects in the prior art are overcome, the problems existing in a traditional PID algorithm for primary frequency modulation of the water turbine are effectively solved, and the defect that a model is difficult to establish due to nonlinearity and time-varying characteristics of a water turbine speed regulation system is overcome.

The invention discloses a vibration exciter, and belongs to the technical field of vibration machinery. The vibration exciter comprises an eccentric vibrator, a vibration excitation box (6) for accommodating the eccentric vibrator, a vibration excitation motor (8) for driving the eccentric vibrator to rotate and further a servo linear motion system (9) for adjusting eccentricity of the eccentric vibrator; and the eccentric vibrator at least comprises a first eccentric body (1), a second eccentric body (2) and a connecting shaft (5), wherein at least one of the first eccentric body (1) and thesecond eccentric body (2) is connected with the connecting shaft (5) through a spiral groove and a boss structure matched with the spiral groove, and the servo linear motion system (9) is connected with the connecting shaft (5). The vibration exciter can adjust the magnitude of exciting force at a static state or any rotating speed.

The invention belongs to the technical field of metal material surface modification and coating and relates to a method for testing flame retardancy of a titanium fire flame-retardant coating. The method comprises the following steps: by taking a friction pair consisting of a coating rotor test sample with a top angle at one end and a coating stator test sample with a round hole in the center as an ignition source, and a friction ignition time as a control parameter, fixing other parameters such as a premixed gas flow temperature, pressure and an oxygen concentration at one value, controllinga gas flow reversing valve through a computer software program, increasing or reducing the friction ignition time till obtaining a plurality of ignitable and non-ignitable testing points, and fillinga preset table with the testing points. When the difference between ignitable and non-ignitable testing points of the stator test sample is smaller than or equal to 0.1 second, a friction ignition time corresponding to a non-ignitable stator test sample is defined as a critical friction ignition time, the tests are continuously repeated for 10 times, and if the stator test samples are all non-ignitable, ignitable and non-ignitable boundaries of test samples are quantitatively described by the critical friction ignition time, that is, the flame retardancy of a tested titanium fire flame-retardant coating is quantitatively represented.

The invention discloses an intelligent preparation method of a special aid for a novel special ceramic material. According to the intelligent preparation method, a sensing module senses the flowing of liquid and a material pressure T, and a PLC executes internal analytical calculation according to a sensing value and received digital signals and controls a grinding module, a conveying module, a timing module, a valve control module, a stirring module, a filtering-drying module and a heating module to execute related operations. According to the intelligent preparation method, the performance including good wear resistance, high rigidity and good tenacity, vibration resistance, heat resistance and corrosion resistance of the novel special ceramic material can be achieved; various parameters in a system can be accurately controlled, and the automation degree is high; furthermore, resources can be saved.