1386results about How to "Reduce structural complexity" patented technology

The invention provides a display base plate, a display panel and a display device. The display base plate comprises a first display area and a second display area; the light transmittance of the firstdisplay area is larger than the light transmittance of the second display area; a plurality of first sub-pixels are arranged in the first display area, the first sub-pixels comprise first electrodes,light emitting structures arranged on the first electrodes and second electrodes arranged on the light emitting structures, pixel circuits used for driving the first sub-pixels are arranged in the second display area, the first electrodes of the first sub-pixels are electrically connected with the corresponding pixel circuits through wirings, the wirings comprise first segments and second segments which are connected with each other, the first segments are located in the first display area, and the second segments are located in the second display area; and a conducting layer is further arranged in the first display area, the first electrodes are electrically connected with the first segments through the conducting layer, and the electrical resistivity of the conducting layer is smaller than the electrical resistivity of the first electrodes and the electrical resistivity of the first segments of the wirings.

The invention belongs to the technical field of aviation, relates to an unmanned aerial vehicle, and in particular relates to an unmanned logistics helicopter. The unmanned logistics helicopter comprises a body and rotor wings arranged on the body, wherein the body is of a cross-shaped structure; four body frames are fixed on the cross-shaped structure to support the body; central coaxial opposite-rotating double rotors are mounted at the central position of the body and are powered by an oil drive engine; four electric quad-rotor-wing supplying posture adjusting capacities are mounted at four tail ends of the cross-shaped structure and are powered by four brushless motors respectively; a cargo frame with a rectification shape is hung below the body through a cargo frame bracket. The unmanned logistics helicopter has the advantages of high endurance, safety, energy utilization and convenience in ground control, and can be put into use as an unmanned logistics aerial vehicle.

The invention relates to the technical field of organic light emitting display, in particular to a pixel circuit, a driving method for driving the pixel circuit and a display device comprising the pixel circuit. The pixel circuit is connected by using a diode which is formed by a driving transistor when data are written into a storage capacitor, the storage capacitor is used for prestoring threshold voltages and data voltage signals of the driving transistor, effective compensation is achieved to threshold voltage drifts, and the evenness and the stability of drive currents are guaranteed. Further, multiplexing of control signals of the pixel circuit by a touch circuit is achieved, charging is conducted on the storage capacitor, and at the same time, charging is conducted on a coupling capacitor in the touch circuit through a charging transistor. Therefore, the circuit structure and operation complexity are not added, and meanwhile the integration of the touch circuit in the pixel circuit is perfectly achieved.

The invention discloses an electric generator based on a methanol water hydrogen-making system and an electricity generation method thereof. The electric generator comprises a methanol water storage container, a delivery pump, a heat exchanger, a reformer, a separation device and a fuel cell, wherein the delivery pump is used for delivering methanol and water to a reforming chamber of the reformer; the heat exchanger is used for carrying out heat exchange on the low-temperature methanol and water and a high-temperature mixed gas output from the reforming chamber; the reformer is provided with the reforming chamber and an electric heater, and the electric heater provides heat energy for the reforming chamber; and the high-temperature mixed gas which takes carbon dioxide and hydrogen as main parts is prepared in the reforming chamber, passes through the heat exchanger and then enters the separation device to be separated to obtain the hydrogen, and the hydrogen is delivered to the fuel cell and subjected to electrochemical reaction in the fuel cell to generate electric energy, a part of the electric energy provides electricity for the delivery pump and the electric heater, and the rest of the electric energy is output. According to the electric generator, the reformer has no need of being provided with a combustion chamber, an air inlet fan, an air inlet channel and a smoke window, the heating temperature inside the reformer is easily controlled and stable, and the reformer is simple in structure, stable in operation and low in overhaul difficulty.

The invention relates to a super-plastic forming / diffusion bonding forming method for a large-curvature complex surface titanium alloy part and belongs to the field of metal plates and hot working. Through reasonably and accurately calculating the unfold size of a part, residual materials on the wrinkled region of the part are removed through cutting in advance, after pre-forming is completed, overall welding and hot shape correction are performed, and the pre-formed and welded part is placed in the same tool so that super-plastic forming / diffusion bonding forming can be performed on the part. Without the help of blank holder force, pre-forming and super-plastic forming / diffusion bonding forming are completed through the same tool, one-time hot forming of the large-curvature complex surface part is completed, the defect that the part is wrinkled and loses stability is overcome, and technology difficulty and tool structure complexity are lowered. The part formed through the method has advantages.

The invention provides an aircraft landing frame comprising a plurality of machine wheel-wheel frame units and an unfolding and folding drive subassembly, wherein the machine wheel-wheel frame units are arrayed forwards and backwards, each machine wheel-wheel frame unit comprises a machine wheel subassembly and a wheel frame which is used for supporting, unfolding and folding the machine wheel subassembly, and the unfolding and folding drive subassembly is linked with each machine wheel-wheel frame unit and is used for driving the machine wheel-wheel frame units to carry out the folding / unfolding operation of the machine wheel subassembly. In the miniature retractable landing frame with multiple wheels and supporting posts, the supporting posts are folded and unfolded by adopting a simple linking device, and the landing frame can be contained into an internal limited space of a machine body of a miniature unmanned machine and has sufficient strength and rigidity and better practicability and reliability.

The present invention provides a liquid crystal display (LCD) device and a back cover thereof. The LCD device comprises a liquid crystal panel, a back cover, a light guide plate and a light source. The back cover comprises a first sidewall, a second sidewall, a first supporting wall and a second supporting wall. The first sidewall and the second sidewall are spaced apart from each other to form a receiving space. The first supporting wall connects an end of the first sidewall and an end of the second sidewall. The second supporting wall extends away from the second sidewall and connects to the other end of the first sidewall. The liquid crystal panel is supported on a side of the first supporting wall that faces away from the first sidewall and the second sidewall. The light guide plate is supported on a side of the second supporting wall that faces towards the liquid crystal panel. The light source is disposed inside the receiving space. The first sidewall is formed with a through-hole for allowing light rays generated by the light source to pass therethrough into the light guide plate. With the aforesaid arrangement, the metal backplate and the plastic mid-frame used in the prior art LCD device can be replaced by the back cover to simplify the structure and lower the production cost of the LCD device.

The invention discloses a methanol water hydrogen-making machine and a hydrogen-making method thereof. The methanol water hydrogen-making machine comprises a methanol water storage container, a delivery pump, a heat exchanger, a reformer, a separation device and a fuel cell, wherein the delivery pump is used for delivering methanol and water inside the methanol water storage container to a reforming chamber of the reformer; the heat exchanger is used for carrying out heat exchange on the low-temperature methanol and water and a high-temperature mixed gas output from the reforming chamber; the reformer is provided with the reforming chamber and an electric heater, and the electric heater provides heat energy for the reforming chamber; and the high-temperature mixed gas which takes carbon dioxide and hydrogen as main parts is prepared in the reforming chamber, passes through the heat exchanger and then enters the separation device to be separated to obtain the hydrogen, and a part of the hydrogen enters the fuel cell and generates electrochemical reaction in the fuel cell to generate electric energy to provide electricity for the delivery pump and the electric heater. According to the methanol water hydrogen-making machine, the reformer has no need of being provided with a combustion chamber, an air inlet fan, an air inlet channel and a smoke window, the heating temperature inside the reformer is easily controlled and stable, and the reformer is simple in structure, stable in work and low in overhaul difficulty.

The embodiment of the invention provides image fusion equipment and an image fusion method. The image fusion equipment comprises a light acquisition device, an image processor and an image sensor witha red, green and blue RGB channel and an infrared IR channel; the light acquisition device blocks the spectrum of a first predetermined wavelength interval in incident light to obtain target light; the first predetermined wavelength interval is that a response difference of the RGB channel and the IR channel in the image sensor on an infrared band is higher than a wavelength range of the spectrumof a first predetermined threshold; the image sensor converts the target light into an image signal through the RGB channel and the IR channel; and the image processor parses the image signal into acolor signal and a luminance signal that is sensitive to the infrared band, and fuses the color signal and the luminance signal to obtain a fused image. According to the scheme of the invention, the operation of removing infrared components from the color signal by the image processor can be simplified, and the fusion efficiency can be improved.

The present invention relates to a thyristor converter valve assembly. The thyristor converter valve assembly comprises a carrier on which a left valve unit and a right valve unit are arranged. Each valve unit includes reactor assemblies, resistor radiators and thyristor radiators. The thyristor converter valve assembly further comprises a water cooling system for cooling the reactor assemblies, the resistor radiators and the thyristor radiators. The water cooling system includes a main water in-coming path and a main water returning path which are communicated by a first water branch, a second water branch and a third water branch arranged in parallel. The reactor assemblies and the thyristor radiators of the left valve unit are all connected in series in the first water branch. The reactor assemblies and the thyristor radiators of the right valve unit are all connected in series in the second water branch. The resistor radiators of the left valve unit and the right valve unit are all connected in series in the third water branch. The thyristor converter valve assembly provided by the invention has a water cooling system and is simple in structure.

The invention discloses an exhaust system for a gaseous film cooling central cone of a turbofan aircraft engine, belonging to the technical field of turbofan aircraft engines. The system sequentially comprises an exhaust system cylinder body (1) of the engine, a confluence ring (2) and a central cone (3) from inside to outside and is characterized in that a central cone end plate (8) is arranged inside the central cone (3); an inner cavity of the central cone is divided into two independent cavities by the central cone end plate, respectively including a central cone front cavity (9) and a central cone rear cavity (10); a gaseous film hole (11) is arranged on the wall surface of the central cone rear cavity; a hollow turbine rear support plate (4) is provided with a hollow cavity which is respectively communicated with an external culvert channel (6) and the central cone rear cavity (10); and a deflector (12) is arranged at the part of the hollow turbine rear support plate (4), which is communicated with the external culvert channel (6). According to the invention, the caudal infrared radiation of the exhaust system can be greatly reduced by reducing the surface temperature of the central cone body.

The invention discloses an antenna array module. More than two antenna units are arranged on a surface, which two power division circuits are arranged, of a feeding network circuit board, a filter isarranged on a surface, which two coupling circuits are arranged, of the feeding network circuit board, each power division circuit is provided with an input end and a plurality of output ends, the plurality of output ends of one of the power division circuits is used for performing polarization feeding on one of the antenna units at -45 degrees, the plurality of output ends of the other power division circuit are used for performing polarization feeding on one of the antenna units at +45 degrees, each coupling circuit is provided with a radio frequency input end and an output end, the output end of each coupling circuit is electrically connected with the input end of one of power division circuits, the filter is at least provided with two output ends, and the two output ends of the filterare electrically connected with the radio frequency input end of one of the coupling circuits. The invention also discloses a base station antenna. Integration and modularization are achieved, the expansibility is improved, an installation structure and a connection structure are simple, the antenna array module is easy to debug and maintain subsequently, and the manufacturing cost and the application cost are reduced.

The invention provides a DD (Direct Detection)-SSB (Single Side Band)-OOFDM (Optical Orthogonal Frequency Division Multiplexing) link implementation method and system for beat interference cancellation, and relates to the field of optical communication. In a DD-OOFDM system, a polarization modulator and an optical band-pass filter generate a cross-polarized SSB-OOFDM signal; the SSB-OOFDM signal is injected to a single side beat interference (SSBI) cancellation receiver (BICR) after optical fiber transmission, a polarization beam splitter (PBS) splits the cross-polarized optical carrier and OOFDM side band in the SSB-OOFDM signal into two linearly-polarized SSB-OOFDM signals, a balance photo-detector (BPD) performs photoelectric conversion, differential photocurrent output by a subtracter only contains an RF (Radio Frequency)-OFDM (Orthogonal Frequency Division Multiplexing) signal, while the SSBI component is completely canceled, so that the guard interval between the optical carrier and the OOFDM side band is greatly reduced and the spectral efficiency of the system is improved. The BICR has the advantages of simple structure, low cost and insensitivity to signal wavelength, and is significant for improving the performance of the DD-OOFDM system.

A transmission mechanism adapted to an electro-mechanical lock and for driving a latch assembly to be unlocked is disclosed. The transmission mechanism includes a bottom plate, a pushing member, a clutch member and an electro-actuating member. The bottom plate includes at least one first pushed structure. The pushing member includes at least one second pushed structure. The clutch member abuts against the pushing member. The electro-actuating member is for driving the pushing member to rotate toward a first direction. The at least one second pushed structure cooperates with the at least one first pushed structure to move the pushing member relative to the bottom board, so that the clutch member is pushed with movement of the pushing member to an unlocked position.

Disclosed are a laser transceiver device and a laser radar. The laser transceiver device includes a light-splitting coupling unit that splits original light into first original light and second original light, an emerging unit that forms emergent light according to the first original light, and an acquiring unit that acquires echoed light to form signal light, and further includes at least one ofa first acting surface that reflects part of the first original light to form first local oscillating light and a second acting surface that reflects parts of the second original light to form secondlocal oscillating light. Since the first local oscillating light is formed by the first original light partly reflected by the first acting surface and the second local oscillating light is formed bythe second original light partly reflected by the second acting surface, the first local oscillating light and the second local oscillating light have relatively low power, thus the power of the emergent light can be improved effectively, so as to effectively extend the detection distance of the laser radar and expand the detection range of the laser radar while keeping the process and cost unchanged.

The invention relates to a system based on a differentiated service network and an IPv6 extension head for realizing autonomous QoS (quality of service) and a method thereof. The creative feature of the method lies in: a service terminal is provided with a service sensing component for sensing the service type and flow feature of a service data message to be transmitted; and the service sensing component takes the IPv6 QoS extension head to bear a sensed service flow parameter, adds the IPv6 QoS extension head in the service data message and transmits the service data message to a network. An ingress edge node is provided with an IPv6 QoS extension head detector for fast checking the service data message accessing the network and judging whether the service data message bears the IPv6 QoS extension head, and a service QoS self-configuration component for extracting service information born in the IPv6 header of service data message and the IPV6 QoS extension head and updating a service data table adaptively according to extracted information. A classifier and a marker of the edge node respectively conduct classification, marking and parameter configuration of a flow controlling mechanism to the service data message according to the service information table, thereby providing support to QoS guarantee and realizing autonomous QoS.

The invention relates to a convolutional neural network generation method and device, and belongs to the technical field of video coding and decoding. The method comprises the following steps: training an initial convolutional neural network to obtain a trained convolutional neural network; determining a to-be-processed convolutional neural network based on the trained convolutional neural network; and performing tensor decomposition operation on at least one target convolutional layer in the to-be-processed convolutional neural network to obtain a target convolutional neural network. According to the invention, the problem that the operation efficiency is low when the current convolutional neural network performs convolution operation can be solved.

The invention discloses a fine line loss analysis system, which comprises an intelligent line loss analysis host module and a plurality of monitoring modules connected to the intelligent line loss analysis host module. The monitoring modules are respectively arranged at a side of a distribution transformer of a station area, branch nodes of each low-voltage branch line, and the side of each user meter box. The monitoring modules are used for separately monitoring the distribution transformer side, the branch nodes of each low-voltage branch line, the metering data of each user meter box, and the metering data of each branch household meter in each user meter box. The intelligent line loss analysis host module collects the total area data of the station area and the measurement data monitored by each monitoring module in real time, and compares the received measurement data according to a hierarchical structure of a distribution network of the station area to obtain and output the lineloss analysis result. According to the fine line loss analysis system, the fine line loss analysis of the station area can be realized. The method has advantages of simple realization, low cost, highprecision, stability and reliability, and the like.

The invention discloses a soft human-simulated finger and a preparing method thereof. One end of the soft human-simulated finger is a finger tail end (5A), and the other end of the soft human-simulated finger is a finger root (5B); an airflow guide pipe (2) is mounted on the finger root (5B), and after a strain limiting layer (30) is spliced on a bottom face board of a hollow base body (3), clockwise and anticlockwise winding lines are wound around the hollow base body to form a fiber enveloping layer (4); and an outer skin layer (1) is formed in an injection molding manner. An air bag (3A) is arranged in the middle portion of the hollow base body (3), and is filled with gas or liquid with a certain pressure, and therefore the soft human-simulated finger deforms. The material young's model of the designed soft human-simulated finger is 250 kPa, the hardness of the soft human-simulated finger approximates to the hardness of human body skin, maximum bending displacement of the single soft human-simulated finger can reach 100 mm, and the output force can reach 4 N.

The invention discloses a method for selecting an application mode of universal serial bus (USB) equipment and the USB equipment. The method comprises the following steps of: pre-storing the configuration information of a plurality of pieces of application, and setting that the USB equipment is operated in a non-driven mode after establishing electrical connection with host equipment; carrying a list of the pre-stored application supported by the USB equipment into a user application selection instruction, and transmitting the user application selection instruction to a user by using a USB graphic user interface; receiving a returned user application selection response instruction, judging the application mode selected by the user is not a charge / power supply application mode, and setting that the USB equipment is operated in a normal operation mode; reading the configuration information corresponding to the application mode selected by the user from the configuration information of the plurality of pieces of application pre-stored by the USB equipment according to the application mode selected by the user, and transmitting the read configuration information to the host equipment by using a USB data wire interface; and configuring the USB equipment according to the received configuration information, and performing data transmission with the USB equipment by using the host equipment. By the method and the USB equipment, the structural complexity of the USB equipment can be reduced, and the convenience of application selection of the user can be improved.

The invention discloses a fixed line loss monitoring analysis system, comprising an intelligent line loss analysis host module which is set at a side of a distribution transformer, and intelligent measurement circuit breaker modules which is set on each branch circuit of a court. Each intelligent measurement circuit breaker module controls a switch of each branch circuit, monitors measurement dataof each household meter in a user measurement meter case on each branch circuit in real time, obtains and identifies topology identification signals of branch levels in the court, and sends the measurement data and the topology identification signals to the intelligent line loss analysis host module. The intelligent line loss analysis host module compares total meter data of the court and the measurement data monitored by each intelligent measurement circuit breaker module according to the topology identification signals based on levels, and obtains and outputs a line loss analysis result. The system has the advantages that a structure is simple, cost is low, real-time fine analysis of court line losses can be realized, and the system is stable and reliable.

The embodiment of the invention relates to the technical field of an antenna and discloses an antenna device, a mobile terminal and an antenna adjustment method. The antenna device provided by the embodiment of the invention comprises an SAR sensor and at least one antenna. Input ends of the SAR sensor are connected with connection parts of the antennas. An output end of the SAR sensor is connected with a processor. The number of the input ends of the SAR sensor is equal to that of the antennas. The SAR sensors are used for sensing the distance between the antennas and a body and outputting the distance to the processor. The processor is used for adjusting transmitting powers of to-be-adjusted antennas corresponding to the antennas when the distance is within preset distance. The embodiment of the invention also provides the mobile terminal and the antenna adjustment method. According to the embodiment of the invention, the terminal is enabled to satisfy a specific absorption rate teststandard, the radiation performance of the antenna is prevented from being avoided, the SAR reduction demands of a plurality of antennas can be satisfied through adoption of one sensor, the cost andspace are reduced, the structure complexity is reduced, and the scheme flexibility is improved.

The invention relates to a modular under-actuated mechanical arm, in particular to a three-finger-three-knuckle under-actuated mechanical arm with a finger tail end path being controllable. The three-finger-three-knuckle under-actuated mechanical arm with the finger tail end path being controllable is used for solving the problem that because of the coupling of the joint movement of an under-actuated mechanical arm, the finger tail end path is not certain during movement, and then an existing under-actuated mechanical arm loses necessary finger flexibility. A finger rotation motor (71) is installed in the middle of three under-actuated fingers which are triangularly arranged. A drive gear (72) is installed on an output shaft of the finger rotation motor (71). A first driven gear (73) and a second driven gear (74) are arranged on connection sleeves (2) of two adjacent under-actuated fingers, the drive gear (72) is meshed with the first driven gear (73), and the first driven gear (73) is meshed with the second driven gear (74). The three under-actuated drive fingers are installed on an under-actuated mechanical arm base (70). The three-finger-three-knuckle under-actuated mechanical arm with the finger tail end path being controllable is used as a tail end execution mechanical arm of an intelligent robot.

The invention provides a spatial high-power nuclear power system based on a closed Brayton cycle. The spatial high-power nuclear power system comprises a spatial nuclear reactor, a Brayton thermoelectric conversion subsystem, a heat dissipation subsystem, a cycle working medium storage and supply subsystem, an electric propulsion subsystem and an electric loading subsystem. Helium-xenon mixed gasis taken as a cycle working medium so as to realize efficient thermoelectric conversion, and a high-specific-impulse high-thrust electric thruster directly driven by high voltage is utilized for realizing efficient propulsion. According to the spatial high-power nuclear power system, the efficient thermoelectric conversion problem of a nuclear power air vehicle and the large-range electric power adjusting problem are solved, and the problem that the high voltage of a motor end is not matched with the lower voltage of the electric thruster is solved.

The invention discloses a probability calculation-based multiple input multiple output detector, which comprises a matrix QR composer, the matrix QR composer is respectively connected with two random sequence generators, the two random sequence generators are respectively connected with a probability complex multiplier, one of the probability complex multipliers is connected with a Gibbs sampling update unit, and both the other probability complex multiplier and the Gibbs sampling update unit are connected with a log-likelihood ratio calculation unit. Because the multiple input multiple output detector uses probability calculation to carry out the MCMC (Markov chain Monte Carlo) algorithm, the complexity of operation is greatly decreased, the transition probability of the Markov chain in the MCMC algorithm is increased, and the problem of locking under a high signal-to-noise ratio is solved. A sliding window sequence generation method is utilized to carry out Gibbs sampling update, so the length of a probability sequence is reduced. When the multiple input multiple output detector is applied to construct a full-parallel detector, a high throughput rate can be achieved with the full-parallel mode.

The invention discloses a distance measuring device, a measuring method thereof and an actual distance measuring method. The device comprises an interrogator and a responder. The interrogator and the responder individually comprises a T / R assembly, a modulation-demodulation module, a baseband signal acquisition module, a baseband signal generation module, a controller and a memory connected with the controller. The modulation-demodulation module is connected with the T / R assembly. The baseband signal acquisition module and the baseband signal generation module are respectively connected between the modulation-demodulation module and the controller. The responder further comprises an envelope detector. An input end of the envelope detector is connected with the modulation-demodulation module, and an output end is connected with the controller. The controller of the responder is provided with a delay time preset module. In the distance measuring process, a clock synchronization problem of the interrogator and the responder is avoided, and the precision of distance measurement is high; in addition, the time delay length for signal forwarding of the responder can be flexibly controlled, different responders are distinguished by different time delays, and the high dynamic performance is easily maintained under the condition of a larger number of responders.

Disclosed are a laser transceiver device and a laser radar. The laser transceiver device includes a light-splitting coupling unit that splits original light into first original light and second original light, an emerging unit that forms emergent light according to the first original light, and an acquiring unit that acquires echoed light to form signal light, and further includes at least one ofa first acting surface that reflects part of the first original light to form first local oscillating light and a second acting surface that reflects parts of the second original light to form secondlocal oscillating light. Since the first local oscillating light is formed by the first original light partly reflected by the first acting surface and the second local oscillating light is formed bythe second original light partly reflected by the second acting surface, the first local oscillating light and the second local oscillating light have relatively low power, thus the power of the emergent light can be improved effectively, so as to effectively extend the detection distance of the laser radar and expand the detection range of the laser radar while keeping the process and cost unchanged.

The invention discloses a gain-and-direction-orientated structure thermal deformation compensation method for a satellite-borne active phase control array antenna. The method comprises the steps of determining structural parameters, material attributes and electromagnetic parameters of the antenna; determining antenna environment thermal load; calculating antenna temperature field distribution under sunshine; determining T / R assembly thermal power consumption; calculating antenna temperature field distribution under the T / R assembly thermal power consumption; performing temperature field superposition and calculating the thermal deformation of the antenna structure; extracting position offset in the array element geometric center; calculating the additional error of the array element space phase; determining the amplitude and phase distribution of array element excitation current; calculating the electrical performance of the antenna; judging whether gain and direction are both satisfied simultaneously or not; and calculating the antenna ideal main beam directed unit vector, the adjusting amount of the array element space phase, and the phase current of the compensated array element excitation current. The compensation method provided by the invention is combined with a phase adjusting method, so that the electrical performance compensation to the deformed satellite-borne active phase control array antenna is realized; the problem of antenna electrical performance degradation caused by structural thermal deformation is solved; and the normal operation of the antenna can be ensured.

The invention discloses a motor rotor displacement measurement method. The method comprises the following steps of: arranging two magnetic induction intensity sensors on a rotor along a moving direction of the rotor, wherein a distance between the two sensors is 1 / 4 of a polar distance of a magnetic field; quantizing sampled signals of the two sensors through a signal processing circuit and performing n frequency multiplication operation after amplitude normalization; and performing zero-crossing point detection, generating a group of orthogonal pulse signals, and detecting the number of pulses of the pulse signals and phase difference of the group of orthogonal pulse signals. The polar distance tau of the magnetic field is subdivided to tau / 2 so as to realize high-precision motor rotor displacement measurement according to sinusoidal magnetic field information of a magnetic steel array of the motor rotor in the moving direction of the rotor directly. By the method, the problems that a calculation method is complex, hardware is inconvenient to mount and a measurement device is high in cost due to the high-precision requirement of the motor rotor displacement measurement can be solved.

The invention discloses a double DSP embedded type welding process visual feedback control system for welding seam tracking and welding quality control in welding automation, comprising a DSP image processing module, a DSP feedback control module, a power and reset module, a visual interface module, an analog video coding module and a USB control module. The DSP image processing module extracts the eigenvalues of a welding region image transmitted from the video interface module and transmits to the DSP feedback control module, the DSP feedback control module outputs corresponding signals according to the eigenvalues, and finishes close-loop control of welding seam tracking and welding quality. By this invention, welding seam tracking and welding seam shaping control can be carried out without a host computer.