122results about How to "Improve precise control" patented technology

The disclosed intelligent power-saving protective device for motor comprises: a primary power circuit with output end connected with the input of following two circuits, a switch power circuit with output end connected with input end of all following members, a power drive circuit with input end connected with the PWM generating circuit and microprocessor and the switch power, a microprocessor with input end connected all of the power drive circuit, protective circuit, the power detection, the parameter controller and the switch power circuit; a PWM generating circuit, a protective circuit, a power detection circuit, a function extension interface, a parameter setting controller, and a display. This invention is convenient and reliable.

The invention discloses a method for calculating the output controlled quantity and a wind power plant in a wind area wind power control system of a power system. The method comprises the steps of: calculating and evaluating control performance standard (CPS (Control Performance Standard) comprising CPS1 and CPS2) indexes controlled by interconnecting ties; judging whether the two indexes are qualified or not; if not, calculating the total controlled quantity of cutting off wind power plant output or recovering the wind power plant output in the whole network by the indexes; calculating and sequencing the regulating and controlling capacities of the wind power plants according to a weighting and scoring method; and calculating the numerical values for control by the wind power plants according to a predetermined current output percentage, combining the numerical value of the output controlled quantity of a whole power grid and sequencing results of the wind power plants, selecting the range of the wind power plants controlled at present, and issuing a control command to complete control operation. According to the invention, the precise control of the wind power plant is improved, and the demand for safe and stable operation of the power grid is satisfied.

The invention belongs to the technical field of tea processing machinery and provides an oil-fired tea dryer. The oil-fired tea dryer comprises a dryer box body, a hot air generating system, a tea feeding system and a tea discharging system, wherein the hot air generating system is arranged above the dryer box body and is communicated with the dryer box body, the tea feeding system is arranged on one side of the dryer box body, and the tea discharging system is arranged at the bottom of the dryer box body. A tea conveying system is arranged in the dryer box body. The tea conveying system comprises at least two conveying layers. The feeding end of the tea conveying system is matched with the tea feeding system. The discharging end of the tea conveying system is matched with the tea discharging system. The hot air generating system, the tea feeding system, the tea discharging system and the tea conveying system are controlled by a control system which is arranged on the dryer box body. According to the oil-fired tea dryer, the structure of the dryer box body is optimized, the path through which hot air enters the dryer box body is shortened, the inner ventilation of the box body is improved, convective heat transfer coefficient is increased through layered conveyance and air intake, and energy loss is reduced.

The invention belongs to the technical field of robot control and in particular relates to a path tracking method for a mobile robot system with an uncertain center of mass. The method comprises the following steps: a temporary path is added, so that the robot departs from an initial position and moves forwards along the temporary path, and the robot is allowed to track an expected path when the robot moves to the expected path. Because the initial position of the robot is positioned on the temporary path, and only when the robot moves nearby the expected path, the robot can track the expected path, so that only a fuzzy controller is designed aiming at the small error condition. Regardless of the initial position, a temporary path can be designed to allow the robot to approach to the expected path, and tracking on the expected path is realized, so that path tracking at any initial point is realized.

The invention discloses a device of throwing an inoculant automatically and a working method thereof. The device of throwing the inoculant automatically comprises an inoculant screening assembly, an inoculant conveying assembly, an inoculant stirring assembly and an inoculant putting assembly, wherein the inoculant putting assembly comprises a large dosage putting conveyor belt, a small dosage putting assembly, a first supporting rack, a receiving hopper, a receiving hopper lifting driving assembly and a receiving hopper overturning driving assembly. The receiving hopper overturning driving assembly is arranged on the receiving hopper, and the emptying amount of the small dosage putting assembly is smaller than that of the large dosage putting conveyor belt. The device of throwing the inoculant automatically disclosed by the invention can add the inoculant by two ways flexibly according to the adding amount of the inoculant. When the inoculant is added in a large dosage, the work efficiency can be improved. In the later period or the working process of inoculant addition, the inoculant can be finely adjusted through the small dosage adding assembly.

The invention provides a quantitating mechanism for powder charge of fireworks and crackers, and relates to the technical field of manufacturing equipment of the fireworks and the crackers. The quantitating mechanism for powder charge of the fireworks and the crackers comprises a fixing seat, a powder storage box, a firework cake and a quantitating plate. A plurality of quantitating shafts and a driving assembly are arranged in the fixing seat, and charge holes are formed in the quantitating plate and the fixing seat correspondingly. Charge grooves corresponding to the charge holes are formedin the quantitating shafts, and bearing grooves corresponding to the charge grooves are formed in the firework cake. The ends, facing the driving assembly, of the quantitating shafts are provided withdriving gears. The driving assembly comprises a driving device and a driving shaft. A driving rack is arranged on the driving shaft and engaged with the driving gears. Through the design of the charge grooves, accurate control of the quantitating shafts over the powder charge amount of the firework cake is achieved, and the charge grooves of different depth specifications can be formed in the same quantitating shaft to achieve the effect that powder charge amount parameters of the same template are adjustable.

The invention relates to the field of injection equipment, in particular to a syringe. The syringe comprises a syringe canister, a syringe piston and an entry needle; the injection port of the syringe canister is provided with a sealing part, and the connecting end of the entry needle is provided with an acicular part used for piercing the sealing part. The arrangement of the sealing part and the entry needle corresponding to the sealing part can prevent the syringe from being polluted at the mouth portion of the syringe by bacteria and improve the anti-bacteria and sterilization effect. The structure can make it convenient to produce the syringe and the entry needle separately, and accordingly the production difficulty is reduced. The sealing part is thin film integrally shaped with the syringe canister. The thin film is integrally shaped, better in leakproofness and lower in cost, and can prevent the bacteria completely with the characteristic of being disposable. Through control over resistance of push of a limiting rod, the push speed of the piston is effectively reduced, the precise control over added quantity of the syringe is improved, and the lower the push speed is, the preciser the added quantity control is.

The invention discloses a temperature control method and device. The method comprises the steps: acquiring the opening degree of a first valve, the opening degree of a second valve and the opening degree of a third valve; according to the first valve opening degree, the second valve opening degree and the third valve opening degree, controlling the valve opening degree of a temperature control medium, and enabling the temperature in the reaction container to be consistent with the preset temperature. Therefore, in the process of controlling the opening degree of the valve, the method not onlyconsiders the deviation value between the temperature corresponding to the current moment in the reaction container and the preset temperature, but also considers the temperature deviation accumulatedvalue and the temperature change rate at the current moment. The accumulated value of temperature deviation is considered in the process of controlling the opening degree of the valve; in addition, due to the fact that the temperature change rate is considered in the process of controlling the opening degree of the valve, the problem that the fluctuation change frequency of the temperature in thereaction container is too high can be avoided, and the accurate control over the temperature in the reaction container is remarkably improved.

The embodiment of the invention relates to the technical field of display, and discloses a digital driving pixel circuit and a digital driving pixel method. The digital driving pixel circuit providedby the invention comprises a pixel driving module, a display module, a storage module and a short circuit module. The output end of the pixel driving module is electrically connected with the input end of the display module, and the control end of the pixel driving module is electrically connected with any output end of the storage module. The input end of the short circuit module is electricallyconnected with the input end of the display module, the output end of the short circuit module is electrically connected with the output end of the display module, and the control end of the short circuit module is electrically connected with any output end of the storage module. And under the condition that the level signal indicates that the display module is closed, the short circuit module isin short circuit with the input end of the display module and the output end of the display module. According to the embodiment of the invention, the level signal can accurately control the light-emitting assembly in the display screen to emit light, and the display effect of the display screen is improved.

The invention provides a purification and detection system for pure water used for cooling a converter valve. The purification and detection system is used for automatically purifying and detecting the dynamic pure water to be detected and comprises a main water circulation loop and a pure water purification branch. The main water circulation loop consists of a frequency-conversion water-circulation pump and a heat exchanger which are connected in parallel by a pipeline; the pure water purification branch consists of a flow distribution device, a pure water purification device and a precision detection device which are connected in series by pipelines; the pure water purification branch and the main water circulation loop are connected in parallel; and a refrigerating unit is connected with the heat exchanger in parallel by a pipeline. The purification and detection system provides a detection environment with constant flow, constant temperature and constant pressure for purification of the pure water for cooling the converter valve, the detection environment is stable and is high in redundancy, accurate to control and high in reliability, and water quality ion concentration detection, water pollution concentration SDI detection, ion exchange resin performance detection, detection on pH value, conductivity dissolved oxygen and other detection on the purification of the pure water for cooling the converter valve are fully realized, so that the safe and stable running of the converter valve is ensured.

The invention discloses a method for adding water in a superfine hematite powder sintering process, which comprises the following steps: (1) stabilizing the speed of the sintering machine; (2) improving and controlling the water addition method; and (3) modifying the tertiary mixer, and adding water to the mixture in a multipoint dispersed mode. The method implements multisection dispersed water addition to the mixture, enhances the accurate control on the water content in the mixture, improves the granulation effect of the sintering mixture, implements uniform heat transfer in the sintering process, and enhances the sintered ore yield, drum strength, sintered ore powder ratio and other indexes.

The invention provides an installation device for a human body sensor and an air conditioner. The installation device comprises a rotary body provided with the human body sensor and a supporting base for supporting the rotary body, wherein the supporting base is further fixedly provided with a motor for driving the rotary body to rotate in a certain angle range. By setting the rotatable rotary body, a scanning detection range of the human body sensor is enlarged; and after a function of the human body sensor is started, the motor is controlled to drive the rotary body to rotate in the certain angle range, so that the human body sensor can be used for detecting in an effective region, a detection range can also be enlarged, the detection accuracy is improved, the accurate control of a human body sensing function of the air conditioner is improved and the satisfaction degree of customers is improved.

The invention provides an automatic rubber material gluing robot and detecting equipment. The automatic rubber material gluing robot solves the problems that the rubber material is tedious in production process and the compressing force and the gluing amount cannot be monitored and comprises a sliding rail, wherein a mounting base is arranged on the sliding rail; a first movable arm is movably arranged on the mounting base; a first movable driving mechanism is arranged between the mounting base and the first movable arm; a second movable arm is movably connected with the upper end of the firstmovable arm; a second movable driving mechanism is arranged between the first movable arm and the second movable arm; and a cleaning component, a gluing component and a compressing component are arranged at the end, far away from the first movable arm, of the second movable arm in the circumferential direction. The automatic rubber material gluing robot has the advantages of being high in production efficiency and automatically monitoring and producing the compressing component.

The invention relates to the technical field of thermal power generation, in particular to a coal-fired power generation system and thermal power generation equipment. The coal-fired power generation system comprises a burner and an external furnace coal-fired mixture system, the coal-fired power generation system can achieve accurate mixture of fire coal and convey the fire coal with the specific coal quality to the different positions of the burner to be burned, the fire coal utilization is improved greatly, and pollutant discharging is reduced. The thermal power generation equipment utilizing the coal-fired power generation system can achieve accurate mixture of the fire coal from different mine lots, the coal quality is ensured to be uniform, and safe operation of a furnace is guaranteed.

The invention relates to the technical field of aqueduct construction, in particular to a cast-in-place aqueduct supporting frame design process based on a BIM technology, and the process comprises the steps that S1, a central control module obtains basic information of an aqueduct and an aqueduct supporting frame and carries out preliminary structural design after obtaining is completed; s2, the central control module preliminarily designs the sizes of internal parts of the channel steel, the transverse rod and the vertical rod according to the basic information of the channel steel; s3, the center control module imports the calculated component size into a BIM system and simulates the component size; and S4, the central control module judges whether the design is completed or not according to whether the adjusted construction process and model simulation meet the standard or not. A supporting frame structure of the cast-in-place aqueduct supporting frame design process based on the BIM technology comprises channel steel, transverse rods, vertical rods and an operation platform. According to the method, more accurate modeling of the cast-in-place aqueduct supporting frame is achieved, the stability of the supporting frame is improved, and the adaptability of the supporting frame to different environments and weather conditions is improved.

The invention relates to a preparation method of a high-temperature-resistant modified asphalt waterproof coiled material and the waterproof coiled material prepared by the preparation method, and relates to the technical field of waterproof coiled material preparation. The method comprises the following steps that asphalt is added into a high-speed shearing machine and heated to be completely melted; a modifier is added into the high-speed shearing machine, heating is performed, and a motor and an ultrasonic vibrator are started to enable a stirring paddle to stir and vibrate the mixed material; after being obtained, high-temperature-resistant modified asphalt is added into a screw extruder, a stabilizer is added, and melt extrusion is performed; and after stable high-temperature-resistant modified asphalt is obtained, sequential coating is performed on a coating machine according to the sequence of a bottom film layer, a lower modified asphalt layer, a lower isolating layer, a padding layer, an upper isolating layer and an upper modified asphalt layer to obtain the high-temperature-resistant modified asphalt waterproof coiled material. The standard dispersity coefficient range, the standard compatibility coefficient range and the standard viscosity range are set in a central control processor, and whether the modified asphalt reaches the standard or not is determined by judging whether actual values are in the ranges or not, so that the quality of the prepared waterproof coiled material is improved.