242results about How to "Realize digital control" patented technology

The digital profile grinder consists of system unit and auxiliary unit station. The system unit is one completely closed structure with machine body, multifunctional workbench, grinding frame, slide seat, CCD detector, and electric distributor. The auxiliary unit station has dust collector, cooler, and air balancing and braking controlling station. The present invention has image distinguishing technology adopted, and has integrated on-line machine tool detection, on-line compensation, on-line grinding wheel trimming and opened multi-axial digital control. It has at most eight shafts controlled, including seven servo rotary motor shafts and one linear servo motor shaft, and has at most six linked shafts, with the controlled shafts being in different combination. The present invention is suitable for machining various complicated parts.

The invention discloses a numerical-control intelligent wall painting machine. The numerical-control intelligent wall painting machine comprises a movable base, a vertical frame rod stretching device erected on the two sides of the base, a plastering device arranged on the vertical frame rod stretching device, an integrated control device arranged on the base and a power device arranged on the base. The plastering device comprises a plastering plate, a plaster hopper, a plaster hopper frame and a plaster hopper frame lifting device used for lifting the plaster hopper frame. The power device comprises a winding machine A and a winding machine B which are installed on the base. A touch screen controller is further arranged on the base through a supporting rod. The touch screen controller is in communication with the integrated control device. An angle adjusting device capable of automatically and intelligently adjusting the slant angle of stretchable vertical frame rods is arranged between the vertical frame rod stretching device and the base. By means of the numerical-control intelligent wall painting machine, many defects of an existing wall painting machine are overcome, the numerical-control intelligent wall painting machine is wide in application range, easy to operate, good in plastering quality, high in plastering efficiency and convenient to transfer, man-machine safety is guaranteed, time, labor and work are saved, and good economy popularizing value is achieved.

A full-digital fine-step high-accuracy controller for step motor is composed of single-chip microprocessor as control core, step motor control interface, power amplifier, and serial communication interface to host computer. Its control signal has standard TTL levels. Its highest frequency (1MH2) can be divided by 250, so increasing its control accuracy by 250 times.

The invention relates to a wind tunnel model folding deformation wing which is mainly used for measuring the pneumatic force of deformable aircraft in the wind tunnel dynamic test; traditional whole wing is divided into parts: a wing body, an internal wing, an external wing and the like; the wing body, the internal wing, the external wing, a connecting rod and a hinge shaft are coupled together with a driving mechanism and a driven mechanism controlled by a precise mechanical device; two mutually parallel longitudinal hinge shafts are arranged at the joint between the internal wing and the wing body and between the internal wing and the external wing; the hinge shaft of the internal wing and the wing body is a fixed shaft; the hinge shaft of the internal wing and the external wing is a driven shaft; the driving mechanism drives the internal wing to rotate correspondingly to the fixed shaft and drives the driven mechanism at the same time, thus leading the driven shaft to rotate correspondingly to the fixed shaft; the external wing arc plane always keeps a state parallel to the horizontal plane during the deformation running process of the wing. The wing folding deformation mechanism runs smartly and stably without noise, excellently bears the pneumatic force and pneumatic moment of the model, and realizes the digital control during the folding process, with precise positioning of the folding angle.

The invention discloses an intelligent medium-frequency high-voltage double-output direct current power supply for electric dust removal. The direct current power supply comprises a three-phase air switch with a tripper, a three-phase rectifier, a filter, a single-phase medium-frequency inverter, an air switch, a medium-frequency step-up transformer, a medium-frequency double half-wave rectifier,a first high-voltage direct current output sampling circuit, a second high-voltage direct current output sampling circuit, an isolating driver and a digital signal processing (DSP) controller, wherein the medium-frequency double half-wave rectifier of the direct current power supply is used for outputting two paths of direct current high voltage; the two paths of direct current high voltage are fed back to the DSP controller through two paths of sampling circuits; and a control signal is output to the single-phase medium-frequency inverter by the DSP controller to adjust frequency and amplitude. The direct current power supply has the characteristics of high output voltage, balanced power grid input and capability of greatly reducing pollution to a power grid and improving the utilizationefficiency of power; and a medium-frequency high-voltage silicon rectifier double-output transformer which is matched with the direct current power supply has the characteristics of small volume, light weight, low manufacturing cost and high efficiency. The direct current power supply has a wide application range and can be applied to construction of a new dust removal electric field, synergetic reconstruction of an old electric field and the like.

The invention discloses a digital space greenhouse. The digital space greenhouse is used for culturing crops in severe environment, particularly in deserts, dry areas, space and the like, and is characterized by comprising an aeration greenhouse, an outer frame, a sun shading device, a culturing device, an irrigation system, a temperature measurement system, a humidity measurement system, a nutrient solution measurement system and a moisture measurement system. The digital space greenhouse requires the outside of only sunshine for the growth of the crops and carbon dioxide for photosynthesis; various equipment and settings for optimal growth of the corps are arranged in the greenhouse; and moreover, the industrial Ethernet is used for monitoring and regulating the plant growth factors in real time and analyzing and storing various data, so digital control on the plant growth is realized. The digital space greenhouse overcomes the defects of the traditional vegetable greenhouse and has the characteristics of energy conservation, environmental protection, high production efficiency, high strength, strong wind/snow-resistant ability, high corrosion prevention performance, high light transmittance, long service life, convenient operation and management and the like.

The invention discloses a circuit structure of a narrow-pulse-width high-repetition-frequency pulse current source. The circuit structure is characterized by comprising an adjustable reference voltage input module (1), a current source module (2), an adjustable narrow pulse generating and shaping module (3), a high-speed selection module (4) and a current mirror module (5), wherein the adjustable reference voltage input module (1), the current source module (2) and the current mirror module (5) are electrically connected in sequence; and the adjustable pulse generating and shaping module (3), the high-speed selection module (4) and the current mirror module (5) are electrically connected in sequence. By adopting the circuit structure, the pulse width, the current magnitude and the pulse frequency can be adjusted. Moreover, the circuit structure has the advantages of narrow pulse width, high repetition frequency, high current, small overshoot and steep leading edge.

The present invention discloses a numerical control driving method and an apparatus for a superradiance light emitting diode. A step response method is used. At the beginning of starting the apparatus, a PID parameter which effectively controls a thermoelectric refrigerator is acquired and is used for a PID control algorithm. The deviation of a thermistor temperature signal and a stated temperature signal is compared. The signal is outputted to the thermoelectric refrigerator through the control of the PID. The thermoelectric refrigerator is controlled to generate a corresponding cooling capacity, so the work environment temperature of a SLD is improved and the temperature stability of the SLD is improved. The present invention is capable of being applicable for the superradiance light emitting diodes produced by various manufacturers and has strong applicability. In addition, the present invention is capable of adjusting a control parameter according to different work environments, so the problem that the control of the fixed parameter is not capable of adapting the environment temperature change is effectively overcome. The control accuracy is improved and the output power of SLD and the stability of a central wavelength are effectively improved.

The invention discloses a pneumatic control loop for dispensing. The pneumatic control loop comprises a main pipeline, a voltage stabilizing device is connected onto the main pipeline in series, a negative pressure pipeline is connected onto the main pipeline in parallel, the tail end of the negative pressure pipeline and an outlet of an electric proportional valve are jointly connected onto two input ports of a change valve, an outlet of the change valve is connected with an inlet of a dispensing needle tube, and a flow control valve, a vacuum device and a negative pressure switch are sequentially connected onto the negative pressure pipeline in series. The pneumatic control loop achieves digital control and digital display of pressure control and brings convenience to control of dispensing amount. The electric proportional valve is arranged in the loop so that a pressure value of a pressure loop is stabilized in a certain scope and dispensing accuracy is improved. The negative pressure pipeline is arranged to provide negative pressure for the dispensing needle tube when the dispensing needle tube does not dispense, so that glue liquid in the dispensing needle tube can not drop under action of gravity, raw materials are saved, and environment are protected.

The invention discloses a using method of a logistics collecting and stacking system suitable for freight containers. The using method includes the steps of loading and unloading preparation, binning operation, unloading operation and the like. According to the using method of the logistics collecting and stacking system suitable for the freight containers, automatic operation is completely controlled by a computer; after a data input and output port inputs the cargo binning position information of the freight containers, a stowage scheme, cargo packaging box stacking coordinate positions, cargo packaging box dimensions and internal dimension data information of the freight containers to the industrial control computer of an electric control device, the industrial control computer controls a supporting undercarriage to make coordinate movement front and back on longitudinal guide rails, and meanwhile a sorting mechanical arm, a ribbon conveyer and a forklift loader are in collaborative operation so that automatic binning or unloading operation can be achieved; and automatic operation is completely controlled by the computer, the defects of manual operation are avoided thoroughly, loading and unloading efficiency is high, and the using method is particularly suitable for cargo loading and unloading stacking operation of the freight containers in logistics storage container shipping.

The invention discloses an energy-saving control method for starting and stopping of circulating water field fans and aims at providing a cooling tower fan starting and stopping control technology. The method comprises the steps that firstly, actual operating parameters such as the environment temperature, the relative humidity, the atmosphere pressure, dynamic pressure of all points of the fans, circulating water inlet and outlet temperatures and the upper tower water volume are collected in real time by using special tools; secondly, according to the collected parameters, single-tower heat engineering calculation is conducted to obtain the water outlet temperature Tp of a tower when the fans are started and the water outlet temperature Tc of the tower when the fan is shut down; and finally, the water outlet temperatures in case of different numbers of fans are calculated according to the thermodynamic equilibrium, the corresponding relation between starting and stopping of the fans and the circulating water temperature is established, and by means of the automatic control technology, the purpose that the water supply temperature of circulating water is automatically adjusted through automatic starting and stopping of the fans is realized. According to the meteorological conditions and process conditions, scientific calculation, optimization and modification are conducted, the water outlet temperature of circulating water is stabilized, and the effects of stabilizing system operation, saving energy and reducing consumption are achieved.

The invention provides a high-power LED two-dimension light source, wherein an aluminum-base printed circuit board is directly welded or adhered with a high-power LED chip, the chip welded area is processed with a bowl-shape concave which circumference is furnished and plated with silver to form a light reflective area, the chip is arranged with a light reflective bowl with silver plated at inner surface to be fixed on the aluminum-base circuit board, a chip light outlet is packed with silicon-type transparent resin, in curvature shape, the light reflective bowl is covered with a lens unit, arranged with an electric connecting structure. The invention can be used to produce mono product or multiple beamed product, with standard distance connecting port, surface light source with low cost and high integration, better heat radiation, and uniform lighting effect, which can be used as general semi-conductor lighting source of variable lamps.

The related control method for LED used as decorative lighting lamp comprises: applying IR technology to remote control the LED, using MCU or ASIC to code or random control signal, arranging an external analog electric signal input interface and pre-set remote control coding data memory, using embedded-MPU to receive signal and generate digital PWC signal to control RGB current of every LED. This invention is benefit to build individual dynamic lighting atmosphere.

The digital control system for arc spraying power belongs to surface technique field, which comprises a power transformer, a silicon controlled rectifier, a signal alignment circuit, a DSP, a Hall current sensor, a Hall voltage sensor, two photoelectric buffers, a H-bridge wire feed circuit, and a SCM; wherein, the signal alignment circuit sends signal into DSP; the DSP outputs trigger impulse signal after signal processing and calculating into buffer; the buffer outputs signal to control silicon controlled rectifier connected with power transformer. This invention improves stability, reliability and flexibility, and realizes information and digital control for spraying power.

The invention discloses a method for controlling the random vibration of an electrohydraulic servo system, which comprises the following steps: utilizing an acceleration power spectral density reference signal to design a filter III, filtering a white noise signal and taking the output of the filtration as an acceleration time-domain driving signal; utilizing a single-step prediction Kalman filter algorithm to online regulate the weights of a Kalman filter I and a Kalman filter II in real time and performing identification on a frequency response function of the electrohydraulic servo system and an impedance function of the Kalman filter I respectively; and constructing a filter IV based on the identification result of the impedance function of the Kalman filter II, filtering the acceleration time-domain driving signal and taking the output of the filtration as an acceleration input signal of the electrohydraulic servo system. The method for controlling the random vibration of the electrohydraulic servo system utilizes the filter III to filter the white noise signal to obtain the acceleration time-domain driving signal, which simplifies the process of generating the time-domain driving signal. The convergence property of the single-step prediction Kalman filter algorithm adopted in the invention ensures the convergence property of the real-time on-line iteration of power spectral density.

The invention relates to an intelligent household photovoltaic power generation control system. The working condition of the system is monitored by applying a digital control technology and an internet technology, information of the system is transmitted and reasonable and effective utilization of electric energy is controlled. Three energy sources of the system are photovoltaic power generating energy, energy stored in a battery and energy obtained from a power grid respectively; and an intelligent electricity housekeeper can monitor these energy data, reasonably analyzes the most appropriate electric energy flow of a home user and creates the biggest economic benefits for the home user. Meanwhile, the information of photovoltaic power generating capacity can be utilized by the system for analytical processing, a series of relevant information of illumination information, temperature information and the like is indirectly known, these information is analyzed by the intelligent electricity housekeeper to control a household intelligent device, all convenience is provided for the user and the user enjoys the pleasure brought by technology. The system is a supplement to a common household photovoltaic power generation system, and can assist the home user to reasonably and efficiently dispatch and use electric energy; and meanwhile, the digital control technology, the internet technology and a photovoltaic technology are fused and the intelligent household photovoltaic power generation control system has relatively high theoretical research and social practice value under the general background of the energy internet.

The invention relates to a material feeding mechanism of a flat plate type blister packaging machine. The material feeding mechanism comprises a lower clamp (50), an upper clamp (30) and a towing air cylinder (40); and also comprises a precision lead screw (100), a ball nut (20), a towing arm (60), a servo motor (70) and a synchronous belt (80); the precision lead screw (100) is fixedly arranged under the towing air cylinder (40); the ball nut (20) in contacted with the precision lead screw (100) is arranged on the precision lead screw (100); the ball nut (20) is connected with the towing arm (60); the towing arm (60) is connected with the lower clamp (50) and the upper clamp (30); and the servo motor (70) is connected with the precision lead screw (100) through the synchronous belt (80) and enables the precision lead screw (100) to rotate. The material feeding mechanism has the advantages that the structure is simple, and the digital control and adjustment can be realized.

A long distance digital supersonic wave/ variable frequency antiscale and descale equipment is provided, which is composed of an inductance power, a digital module, a digital crystal displayer, a supersonic power, a cable conductor, a transducer, a protecting cover, a ring piezoelectricity ceramic plate, a metal amplitude transformer, an engine body, a flange, a metal energy collecting block, a pipeline, a pipeline front flange, a rear flange, an inductance coil. Wherein, the supersonic wave engine and the pipeline have an ideal inclined angle range of 30 to 60 degree and are welded on the pipeline, the communication of the supersonic wave and the flow direction are same. As that, the invention in not only helpful to the communication of the supersonic wave and is not easy to produce standing wave and rejection wave, but also reduces the repeat shocking to the pipeline of the cavitation effect of the supersonic wave, thus prolonging the service life of the pipeline. A twist wire connected with multicircuit or variable frequency circuit board is winded on the industrial pipeline. The invention uses the cavitation effect of the supersonic wave to work on the dirt on the inner wall of the pipeline in lateral wave and vertical wave, which realizes the descaling of equipment, and the long and short distance in the pipeline, and procede variable frequency antiscale and descale to the pipeline fluid in distance by using variable frequency magnetic field. The equipment can remove furr in advance, but also can prevent forming dirt, which can make the longer pipeline provided with no furr producing condition, ensures the whole pipeline smooth. The invention saves water resource, improves equipment efficiency, reduces the maintaining cost and prolongs the service life of the equipment, which can realize digital controlling and automatic protection functions.