4 results about "SITOR" patented technology

The present application relates to finite time reduced dimension observer design method and chaotic communication system, belong to information security and chaotic communication field. In view of the defects of traditional asymptotic observer slow, time is uncontrollable, sliding mode method exists chattering and message signal pollution output is difficult to construct observer, the present application establishes the chaotic drive system containing message signal embedding, constructs the equivalent system without unknown signal, designs finite time reduced dimension observer based on observer matching condition and strong observable condition. Compared with the traditional asymptotic convergence observer method, the present application can realize the complete synchronization of chaotic system within the user preset time, adopts continuous control law without chattering, and the message signal can be accurately recovered through algebraic formula. The synchronization time of the present application is controllable, the convergence speed is fast, the recovery precision is high, and the robustness is strong, which is suitable for various chaotic secure communication scenes, effectively improves the communication real-time, security and engineering practicability.

The application discloses an asynchronous language input mode closed-loop control method and system based on evolution state machine feedback. The method comprises: continuously maintaining a multi-dimensional evolution state matrix representing a target voice input process; collecting multi-source trigger signals containing voice features, behavior interaction and scene labels; calculating mode switching gain based on the matching degree of the evolution state matrix and the multi-source trigger signals, and driving the system to dynamically migrate between multiple asynchronous audio input modes when the gain meets the standard. The method performs smooth compensation of the audio stream gain during the migration process, and synchronously updates the audio processing path and the output strategy. The system reversely corrects the evolution state matrix according to the feedback features fed back by the second terminal in real time, forms a closed-loop scheduling of the target language auditory load output frequency, complexity and cooperation ratio. The application realizes long-term consistency and logical coherence of the audio input environment under the condition of non-text starting and low interaction intervention, and reserves a synchronous alignment interface for cross-modal semantic mapping.

The invention relates to a multi-mode belt conveyor driving fault intelligent diagnosis and early warning system and method, and belongs to the technical field of belt conveyor driving system fault diagnosis. The system comprises a substation acquisition unit, a field sensing unit, an industrial audio acquisition unit, an industrial server and a system client. Multi-mode signals such as current, voltage, vibration, temperature and audio of key components in the driving system are collected and transmitted to an industrial server through an industrial Ethernet for multi-mode signal noise reduction processing, a fusion matrix is constructed, a dynamic threshold value is corrected in real time based on the load rate and the environment temperature, local decision making is carried out, and the dynamic threshold value is corrected in real time. And the D-S evidence theory is adopted to realize accurate traceability of the fault component. The method has the advantages of strong anti-interference capability, dynamic self-adaption of the threshold value, high decision interpretability, high response speed and the like, can effectively realize real-time monitoring and intelligent pre-diagnosis alarm of the driving fault of the belt conveyor, remarkably improves the early warning accuracy and efficiency, and reduces the maintenance cost.

Disclosed is a multi-cone loudspeaker, including a cone assembly. The cone assembly includes a central cone and a plurality of outer cones successively arranged in a circumferential direction of the central cone. The central cone is driven by a central driving mechanism to vibrate and sound, each of the plurality of outer cones is driven by one of outer driving mechanism to vibrate and sound. The central driving mechanism includes a central voice coil connected to the central cone, and a central magnetic driving system for driving the central voice coil, and each of the plurality of outer driving mechanism includes an outer voice coil connected to one of the plurality of outer cones, an outer damper sleeved on the outer voice coil, and an outer magnetic driving system for driving the outer voice coil.