255results about How to "Improve reconfigurability" patented technology

The invention discloses a parallel mechanism capable of realizing four-degree-of-freedom movement. The mechanism is characterized in that a subangle mechanism or the combination of the subangle mechanism and a parallelogram structure is adopted for a moving platform, thus the moving platform is of a rhombus structure, the relative positions of virtual central points of the structure are not changed, and only the deformation movement of relative extension and compression along the diagonal direction can be performed. The mechanism provided by the invention has the advantages of flexible movement, uniform stress, high movement accuracy; the relative movement is converted into rotation movement of an actuator through an angular magnification mechanism, moving pairs are not used in the mechanism, the defects such as nonuniform stress, great friction, short service life and the like are avoided, the integral structure has good rigidity and stability, high-speed movement can be realized easily, and requirements of complex grabbing operations are satisfied; and the mechanism has high reorganization, multiple configurations can be realized, and the clamping and rotation operations can be implemented, thus multiple choices are provided for practical applications.

The invention provides a digital switch converter with fast transient response capability. The digital switch converter comprises a Buck type switch converter power level main topology structure, an A/D (analog-to-digital) sampling conversion unit, a prediction control unit, a fuzzy PID (proportion integration differentiation) control unit, a DPWM (digital pulse width modulation) unit and a driving unit, wherein the A/D sampling conversion unit respectively samples the analog output voltage value and the analog inductor current value of the sampling switch converter and converts analog signals into digital signals, the prediction control unit predicts the next switch period output voltage value according to the A/D sampling digital signal value combined with the Buck type switch converter main topology structure, the fuzzy PID control unit determines the switch period duty ratio according to the output voltage error value and the output voltage error deviation value, and the DPWM unit and the driving unit output the corresponding on-off state of a power tube of the PWM driving switch converter according to the duty ratio for regulating the output voltage value.

The invention relates to the technical field of radar circuit fault detection and diagnosis, specifically to a radar signal unit performance test and fault diagnosis system based on a general test platform. The system comprises a general test platform, a test procedure set, an interface connection module, an interface test adapter and a signal processing unit to be tested, the general test platform includes general test instruments and hardware resources including a test procedure set, a programmable power supply, a spectrometer, a signal generator, a digital oscilloscope, a digital triple-purpose meter, a digital I/O, a communication interface, a multichannel ADC and a multichannel DAC, and the test platform is connected with the interface test adapter through the interface connection module. By adoption of a system architecture of the general test platform plus the interface test adapter, the system has very strong universality and expandability, allows multiple equipment to share one test platform, and the interface test adapter adopts a hardware architecture of FPGA+ARM, and has very strong universality, expansibility and reconfigurability.

An aircraft center wing box digital assembly positioning system and positioning method are provided. A digital flexible positioning tool is divided into a bed body unit, a front spar positioning unit,a rear spar positioning unit, a left wing rib conformal unit, a right wing rib conformal unit, an upper tooling positioning pressing unit and a lower tooling positioning pressing unit according to functional modules. At first, an automatic positioning method is performed with the skeleton as the reference; skeleton parts such as the front spar, the rear spar and the wing rib of the large-scale central wing box are accurately positioned, and then the upper panel, the low panel and the longitudinal spar are positioned with the skeleton as a reference until the whole positioning process of the central wing box is completed. The digital assembly positioning system and positioning method are capable of accurate positioning, automatic control, multi-functional integration, and flexible design of large-scale center wing boxes.

The present invention is directed to a reconfigurable data communications system. The system includes a removable optical backplane connector with a first end and a second end, a first data communications card, and a switch fabric card. The first data communications card includes an optical port configured to receive the first end of the removable optical backplane connector. The switch fabric card has a plurality of optical ports adapted to receive the second end of the removable optical backplane connector.

The invention provides a multi-sensor intelligent monitoring system based on the Internet of things, which comprises a monitoring client, a server and a plurality of sensor monitoring modules, and is characterized in that the sensor monitoring modules and the monitoring client are connected with the server; the monitoring client comprises a mobile equipment monitoring client and a PC monitoring client, and the mobile equipment monitoring client is used for performing real-time data monitoring; and the PC monitoring client comprises a system login module, a real-time data monitoring module and a data analysis module. The multi-sensor intelligent monitoring system further comprises a gateway module, and the sensor monitoring modules are connected with the server through the gateway module. According to the invention, real-time monitoring is performed on target equipment by means of various sensor modules, data is transmitted to the server, and real-time conditions of a monitoring target can be seen by a user visually on an interface of the monitoring client after the data is analyzed and processed, and the multi-sensor intelligent monitoring system is convenient, efficient, more intelligent and low in cost.

A field programmable filter array with high spectral isolation and reconfigurability. A bank of resonators can be programmed at will and on the fly to give any type of filtering response. The order, type and bandwidth of the filter are electronically reconfigured. Each subset of resonators can switch between bandstop and bandpass configurations and form custom filter shapes consisting of combinations of bandstop and bandpass filters. The filter can include a unit cell of a resonator with a series of switches to enable coupling to any of its nearest neighbors. The path in which the flow of energy takes through the array of resonators is dynamic, and the filtering function which is created is dialable on demand.

The invention discloses a construction method of a SDN virtual network environment and the SDN virtual network environment. The construction method comprises establishing of a virtual node and a virtual link. The virtual node is obtained by performing virtual construction according to equipment having different network functions. The virtual node is a virtual controller, a virtual switch or a virtual host. The virtual link is obtained by performing virtual construction according to the communication mode between different sets of equipment. The corresponding virtual network elements are constructed for the target network environment: firstly virtual construction of the virtual node is performed, and the virtual node is corresponding to the equipment in the target network environment; thenthe virtual link is constructed, and the virtual link is corresponding to equipment communication in the target environment; and finally the virtual network experimental environment corresponding to the target network environment is obtained. The network element function is abstracted, and network element construction of the SDN is performed by introducing the concept of the virtual network element so that the SDN mobility and reconfigurability can be greatly enhanced, and adaptation of different network experimental environments can be realized.

The invention discloses a microwave photon filter of a multi-wavelength light source and a tuning and reconfiguring method of the microwave photon filter. The microwave photon filter of the multi-wavelength light source comprises a multi-wavelength light source generator and a microwave filter device. The microwave filter device comprises a phase modulator, an adjustable dispersion compensator, a first erbium-doped optical fiber amplifier, a photoelectric detector and a vector network analyzer. A comb-shaped optical fiber of the multi-wavelength light source generator is a programmable optical filter. By observing response curve of the network analyzer, dispersion value of the adjustable dispersion compensator is adjusted, time delay between adjacent optical wavelengths of adjacent multi-wavelength light is changed continuously, and central continuous tuning of the microwave photon filter can be realized. The number of comb-shaped pass bands is set by the programmable optical filter to change the number of emitting wavelengths, and adjustment of the bandwidth of the microwave photon filter is realized. Tunable capacity and reconfigurability of the microwave photon filter are realized, and the microwave photon filter can be more flexibly used for the microwave signal processing system.

The invention discloses a multi-interface remote monitoring system, which comprises a master control transmission module and an upper computer. The master control transmission module has eight types of data interfaces which are a path of Ethernet interface, two paths of RS232 interfaces, two paths of RS422 interfaces, two paths of RS485 interfaces, two paths of low voltage differential signaling (LVDS) interfaces, two paths of controller area network (CAN) interfaces, 23 paths of digital input interfaces, 32 paths of digital output interfaces, 16 paths of analogue input interfaces and 8 pathsof analogue output interfaces respectively, and parameters of each interface can be remotely reconfigured in real time. The upper computer communicates with the master control transmission module by the Ethernet. Monitored experimental equipment communicates with corresponding interfaces of the master control transmission module. The upper computer controls or acquires the experimental state of the monitored experimental equipment by the master control transmission module. The system has the superior characteristics of functional modularization, system integration, rich data interfaces, system function reconfigurability, remote monitoring operations and the like.

The invention discloses a mobile smart card system with the identity authentication function, which comprises a mobile terminal and a security device with the identity authentication function and large data volume storage function. The security device is combined with an independent card body with the radio frequency communication function so as to meet the requirements of uniform identity authentication services, large data volume storage and cross-field application integration. The mobile smart card system has the advantages of facilitating reuse and maintenance of devices, improving system scalability, enhancing service reconstructability and innovation capabilities, canceling service bottleneck, promoting convergence of mobile internet services and innovative development, and implementing perfect combination of remote payment and near-field payment.

The invention discloses a high-precision rope driving device. The high-precision rope driving device is characterized by comprising a pair of main body brackets, a pair of support rods, a rope, a rope traction mechanism, an universal derivation mechanism, a real-time tension measuring mechanism and a servo driving device; in the driving process, the rope traction mechanism guarantees sequential winding or releasing of the rope on a groove carving drum; at the same time, the upper tension of the rope is detected; the tension of the rope is precisely controlled and output; and the rope is leaded to a target working position through the universal derivation mechanism. The high-precision rope driving device can improve the position control precision and the tension control precision of the driving rope, and improves the applicability and the economic benefit through the universal derivation mechanism by reducing other auxiliary guide equipment.

The invention relates to the field of biomimetic robots, in particular to an elephant-nose-imitated robot based on a novel under-actuated mechanism. The elephant-nose-imitated robot comprises a drive mechanism, a connecting shear fork mechanism and a plurality of elephant nose joints. Each elephant nose joint is provided with a linkage shear fork mechanism, the drive mechanism is connected with the linkage shear fork mechanism on the elephant nose joint closest to the drive mechanism through the connecting shear fork mechanism, the linkage shear fork mechanisms on the elephant nose joints are sequentially connected, the connecting shear fork mechanism and the linkage shear fork mechanisms are synchronously opened and closed through the action of the drive mechanism, and the side, provided with the linkage shear fork mechanism, of each elephant nose joint is opened or closed through the action of the corresponding linkage shear fork mechanism. The elephant-nose-imitated robot is simple in control, good in stability and capable of bearing large loads.

The invention discloses a full-flow 128-bit-accuracy floating-point accumulator based on full expansion. The main technical problem to be solved is to provide an accumulator for realizing lossless accuracy accumulation. The full-flow 128-bit-accuracy floating-point accumulator based on full expansion comprises a normalized module and a full-expansion floating-point accumulator module which comprises a mantissa addition module, a memory module and a rapid carry module, the memory module comprises four memories, a counter and four selectors, the mantissa addition module comprises a complementation part, a shifting part, an operator A register, an operator B register, an addition module, an addition result register and a first flag upgrading part, and the rapid carry module comprises a carry termination factor address generating part, a carry termination factor address register, a carry termination factor generating part, a carry information register, a carry termination factor register, a carry adder, a carry addition result register and a second flag upgrading part. The accumulator of the invention has improved accuracy and speed.

The invention discloses a wide passband reconfigurable microwave quantum photon filtering device and filtering method based on stimulated brillouin scattering, relates to a microwave quantum photon filter based on the stimulated Brillouin scattering in optical fibers, and belongs to the optics and microwave crossing field. The wide passband reconfigurable microwave quantum photon filtering device and filtering method solves the problem that a passband of an existing microwave quantum photon filter is narrow. According to the quantum photon filtering device and filtering method, two lasers are adopted to respectively generate pump light and carrier wave light, two phase modulators are adopted to respectively conduct phase modulation on the pump light and the carrier wave light, two isolators are adopted to protect the lasers, the stimulated brillouin scattering occurs when first order lower edge frequency or first order upper edge frequency signals of the carrier wave in the optical fiber enter a stimulated Brillouin gain spectrum corresponding to the pump light, the width value of the edge frequency signals is amplified, a beat frequency signal is output through a detector, and then filtering of passband microwaves is realized. The quantum photon filtering device and filtering method is applied to microwave quantum photon filtering.

The invention includes: building tribe; allocating tribe; making fault management by cooperation between multi mobile agents; making topology discovery by using features of mobile agent such as mobility, autonomy and intelligence to establish and classify the tribes in term of the topology structure of network; the network management station generates and distributes the tribe management agents to distribute the tribe; thereby the agent used in fault management can make a global network fault management between different tribes and a local network fault management in the interior of a tribe.

The invention relates to a compensated underwater brushless DC motor structure and an assembly method thereof. The motor structure comprises a motor end cover subassembly (1), a motor main body (2) and a compensator device (3), wherein the motor end cover subassembly (1) is positioned at the front end of the motor main body (2) and is fixedly connected with the motor main body (2) via bolts, the compensator device (3) is positioned at the tail of the motor main body (2) and connected with the motor main body (2) via bolts, and the compensator device (3) comprises a compensator skin (16), a compensator gland bush (17), a motor tail hood (19), a compensator spring (20) and a compensator screw cap (18). The motor structure has modularized design characteristic, the compensator device and the motor main body can be separated, and different compensator devices can be correspondingly adjusted or replaced for meeting different work environmental requirements so that the motor structure has the advantages of simple and compact structure, convenient assembly and debugging, and safe and reliable working and easy maintenance.

Provided are a large tuning range chirp signal generating method and device. The method comprises: in a large signal modulation mode, utilizing an electrooptical modulator to perform electrooptical modulation on the optical carrier wave outputted by a tunable light source and the radiofrequency signal outputted by a radio frequency local oscillator to obtain a dual wavelength optical signal; modulating the optical signal through a wavelength separation and polarization reuse module to generates an orthogonal polarization dual wavelength optical signal; employing the orthogonal polarization dual wavelength optical signal as an optical carrier wave to be inputted into a polarization modulator and to perform electro-optical modulation with a parabola waveform excitation signal; and generating a chirp signal through a detector beat frequency, and adjusting a tunable light source output wavelength and a radio frequency local oscillator output frequency to perform carrier frequency tuning on a generated chirp signal. The chirp signal generated in the scheme has the advantages of great stability, high carrier frequency, large tuning range, reconstructible waveform, etc., and can be applied widely in future.