12 results about "Switching algorithm" patented technology

The invention provides an anti-quantum national secret dual-mode cryptographic algorithm switching method and system based on dynamic scheduling, and relates to the technical field of dynamic scheduling, and the method comprises the steps: collecting the operation characteristics of a cryptographic communication session, and carrying out the analysis to obtain an evaluation result containing an attenuation inflection point and an algorithm failure time boundary; determining a candidate switching algorithm set from the heterogeneous algorithm pool according to an evaluation result, and calculating a resource overhead expected value and a safety gain expected value of each candidate algorithm; establishing a dual-mode collaborative switching decision mechanism, mapping resource overhead and security gain into a Pareto leading edge solution set in a reserved response interval before an algorithm failure time boundary, and determining a switching scheme by combining a semantic fragment boundary; algorithm switching is executed by inserting a control frame at a semantic fragment boundary, and iterative correction is carried out by utilizing scheduling execution feedback. According to the method, smooth switching between the national cryptographic algorithm and the anti-quantum algorithm is realized, the security and the resource efficiency are both considered, and the long-term security of the cryptographic system is ensured.

The invention provides a security method and device based on homomorphic encryption, and belongs to the technical field of communication, and the method comprises the steps: obtaining a level 2 error learning hypothesis LWE ciphertext; converting the LWE ciphertext into a first ring error learning hypothesis RLWE'ciphertext at a level 1 by executing a public key switching algorithm and a splicing operation; and calculating the first RLWE'ciphertext by executing a scheme switching algorithm to obtain a first RGSW ciphertext at the level 1. It can be seen that one RLWE'ciphertext, such as a first RLWE 'ciphertext, is calculated through a public key switching algorithm, then the first RLWE' ciphertext is expanded into an RGSW ciphertext, such as a first RGSW ciphertext, through a scheme switching algorithm, the key size is smaller, and the overhead is smaller than that of calculation of two RLWE 'ciphertexts, so that the overhead of circuit bootstrap in a hierarchical homomorphic calculation mode can be reduced, and the circuit bootstrap efficiency is improved. The operation efficiency is improved.

The invention provides a control method and device for a three-phase interleaving LLC series resonant converter, and belongs to the technical field of power electronics, and the method comprises the steps: collecting a feedback signal of the three-phase interleaving LLC series resonant converter; the load state of the series resonant converter is judged according to the feedback signal, two working modes of the series resonant converter are determined, a four-switch frequency modulation and phase modulation working mode is adopted when the series resonant converter is in a light-load or no-load state, and a three-phase staggered half-bridge six-switch frequency modulation working mode is adopted when the series resonant converter is in a heavy-load state; and switching between the two working modes by using a preset switching algorithm based on the calibration gain matrix parameter. The three-phase interleaving LLC series resonant converter solves the problem that the three-phase interleaving LLC series resonant converter is unstable in voltage (large in output ripple) in a low-voltage light-load or no-load state, the output range is effectively expanded, and the problem of output gain abrupt change generated when a light-load working mode and a heavy-load working mode are switched is solved.

The invention provides an aircraft networking task planning simulation verification method and system. The aircraft networking task planning simulation verification method comprises the following steps: calling a preset group website site layout algorithm, and generating sight distance group website site layout information; based on a preset cross-regional networking switching algorithm, performing adaptive pre-switching judgment in combination with a preset flight path and a target station coverage range, and generating a sight distance networking cross-regional switching strategy; synchronously and dynamically simulating a pose change process of the aircraft along a preset flight path and establishment, maintenance, interruption and switching processes of a sight distance communication link between the aircraft and a target site based on the sight distance group site point layout information and a sight distance networking cross-region switching strategy to obtain simulation data; and verifying the generated sight distance group website point layout information and the sight distance networking cross-region switching strategy based on the simulation data. According to the technical scheme, a more accurate and reliable verification means can be provided for aircraft sight distance networking planning.

This application relates to a control method for a multi-protocol switching quantum-resistant security gateway. The method includes, after the security gateway powers on, performing a hardware environment security self-test and generating a unique root key based on a physically non-cloning function; continuously collecting and analyzing network traffic characteristics; identifying quantum attack patterns and dynamically deciding on encryption algorithm modes based on a machine learning model; parsing communication data packets; dynamically converting and adapting between traditional and quantum-resistant cryptographic protocols according to instructions and preset rules; calling a quantum-resistant cryptographic engine for encryption or signature operations; dynamically deriving and managing session keys throughout their lifecycle based on the root key; and, based on quantum attack detection results, switching algorithm modes, communication protocols, and keys in a coordinated manner, while also enabling side-channel attack protection and hardware security response. This method achieves proactive protection against quantum attacks, seamless multi-protocol compatibility, and full lifecycle security management of keys for the security gateway.

The application discloses a hardware accelerator for a key switching algorithm in a CKKS homomorphic encryption algorithm, and belongs to the field of privacy calculation and fully homomorphic encryption hardware acceleration. The hardware accelerator comprises an NTT / INTT circuit and a peripheral polynomial operation circuit. The NTT / INTT circuit is used for realizing domain transformation of a polynomial, and comprises a plurality of parallel butterfly operation cores and an NTT control module for generating a memory address and a data flow control. The butterfly operation core comprises a storage array, a calculation array and a peripheral digital circuit. The storage array is used for storing a rotation factor, and the calculation array is used for calculating a partial product of the rotation factor and polynomial coefficient multiplication. The hardware accelerator can realize highly parallel key switching operation, solves the problem of excessive fully pipelined data flow storage overhead caused by data dependency in other works, and effectively reduces the area and power consumption of the circuit.

The invention discloses a multi-mode interactive dynamic rehabilitation intelligent mattress for hemiplegic old people. The multi-mode interactive dynamic rehabilitation intelligent mattress is characterized by comprising a multi-mode intelligent interactive system, a dynamic adaptive mattress structure and adjusting system, a health-rehabilitation collaborative management system and an emergency intelligent response system, the method has the advantages that the multi-modal interaction reliability is high, voice, eye movement and muscle force multi-dimensional instructions are fused, the problem of single-modal failure is solved through a priority switching algorithm, and the instruction recognition accuracy is larger than 92%.

The invention relates to the technical field of aircraft system / subsystem architecture design and software algorithms, and discloses a distributed cross-linking actuation system general architecture and software design method for an aircraft, and the method comprises the steps: designing a distributed redundancy controller and an actuator of an actuation system according to the overall aerodynamic layout and servo actuation requirements of the aircraft, designing a redundancy controller cross-linking relation and an actuation link single / double configuration relation based on the power-to-weight ratio and the reliability safety constraint; based on distributed layout and control requirements of an aircraft actuation system, a general software architecture process with a main / standby control mode and state intelligent decision judgment is designed; and designing performance state monitoring based on a real-time dynamic virtual model and a channel switching algorithm based on a key fault discrimination signal, and implanting the designed monitoring and switching algorithm into a software architecture to realize intelligent stress fault-tolerant reconstruction of the comprehensive servo actuation system corresponding to different fault working conditions.

The present application relates to the technical field of television system, and more particularly to a monitoring analysis method and analysis system for set-top box application, comprising a signal acquisition module, a real-time video feature extraction module, a standby signal source storage module and a seamless switching module. According to the mapping relationship between the video features and the viewing quality indicators, on the one hand, when the viewing experience is not optimal, the signal source can be switched, and through the buffer technology and the seamless switching algorithm, the standby signal source with weighted ranking can be switched to, so as to realize stable switching, reduce the interruption caused by signal switching, and at the same time, the signal source in the cloud can be called out to save switching time and improve the experience. On the other hand, the signal quality indicators are verified through the video features, so as to realize the quality indicators reflected by the double indicators, not only to ensure the accuracy of the quality indicator identification, but also to timely give an early warning when the signal acquisition module determines that the signal quality indicator is inaccurate, so as to improve the sustainable use effect of the monitoring set-top box.

The present disclosure provides a wind turbine variable pitch double controller control method and device, the method comprising: determining the wind condition state of the wind turbine; obtaining the final pitch control instruction of the variable pitch control based on the preset switching algorithm and the wind condition state; if the wind condition state of the wind turbine is normal turbulent wind condition, using the output signal of the preset variable gain PI variable pitch controller as the final pitch control instruction; if it is gust wind condition, using the output signal of the preset fuzzy PI variable pitch controller as the final pitch control instruction; if it is between normal turbulent wind condition and gust wind condition, using the common output signal of the variable gain PI variable pitch controller and the fuzzy PI variable pitch controller as the final pitch control instruction. The control performance of the existing wind turbine can be optimized without increasing the cost, in addition, the wind turbine itself can adapt to high turbulence wind field represented by mountain wind field, and wind turbine vibration overspeed and other shutdowns can be avoided.

The invention discloses a voice robot interaction effect optimization method based on an intelligent sensor, and the method comprises the following steps: S1, obtaining a user voice signal, and converting the user voice signal into text information; s2, extracting a phoneme sequence; s3, constructing a mouth shape database, and executing phoneme matching; s4, proposing an asynchronous mouth shape switching algorithm, and generating a prediction dynamic mouth shape sequence by adopting a mouth shape track adaptive optimization algorithm; s5, a flexible rigidity adjusting item and a damping adjusting item are introduced into the flexible dynamic model, an improved flexible dynamic model is constructed, the driving torque of the mouth of the robot is calculated, and steering engine driving control parameters are obtained; s6, a steering engine control instruction is generated, and a mouth shape action is executed; and S7, updating a steering engine control instruction. According to the method, the synchronization degree between the mouth shape motion of the robot mouth and the voice rhythm is improved, the mouth shape angle deviation and the mouth shape response time delay are reduced, and therefore the naturalness and stability in the voice robot interaction process are improved.

Techniques are described for identifying switching points that switch the resolution of video during streaming due to changing the network bit rate. A first quality metric at a plurality of bit rates is determined (e.g., 414) between the selected video and a respective output video derived from compressing (410) and decompressing (412) the respective selected video. Further, a second quality metric at a plurality of bit rates is determined between the respective selected video and an amplified video generated by amplifying the output video. Using (512) the first and second quality metrics and the bitrate, a switching point is identified (514) that changes resolution during streaming.