5results about How to "Clear goals" patented technology

The invention discloses a middle friction type double-acting-force self-adaptive variable-speed electric driving system which has all the advantages of a double-acting-force self-adaptive variable-speed electric driving system, a node of slow-gear return power of the structure is located near the axial middle of an inner ring of a clutch and is the same as the position acting on a second group of elastic pieces, the response sensitivity is improved, and the service life of the system is prolonged. The structure is simple and compact, jamming and time delay in the gear shifting process are further avoided, gear shifting of a speed change system is sensitive, and pause is avoided; meanwhile, the slow-gear traction force return position is located near the axial middle of the driven part, when resistance is increased, the separation process of the clutch is achieved by compressing all the elastic assemblies instead of releasing a set of elastic assemblies, and therefore separation of the clutch is fast, and the problem that the efficiency is reduced due to redundant friction is solved.

The invention provides an electromagnetic lock system design method based on an MBSE process, and the method comprises the steps: carrying out the analysis and definition of a user demand, and converting the defined demand into a product demand; the requirements are comprehensively analyzed at the system level so as to ensure that all the function and performance requirements are covered; after system demand analysis is completed, system architecture design is carried out, and function and performance demands are refined; after the requirements are refined, subsystem architecture extraction is carried out; carrying out subsystem demand distribution, and carrying out mechanical structure and electronic and electrical analysis; carrying out mechanical structure design and simulation verification; and carrying out equipment demand distribution. Based on the MBSE framework, through refined demand analysis and system architecture design, the accuracy and controllability of system design are improved, and it is ensured that functions and performance expected by a user are finally achieved.

The present application relates to power distribution system technical field, especially to distributed intelligent power distribution network self-healing control method and system.The method comprises the following steps: step S1, real-time collection of distributed intelligent power distribution network operation data; step S2, fault detection; step S3, parallel protection control; step S4, building fault section positioning model and island division model, and positioning fault section according to fault section positioning model, and dividing island according to island division model; step S5, building double-target optimization model; step S6, solving double-target optimization model according to improved ant colony algorithm, and obtaining optimal switch action table; step S7, safety check of optimal switch action table, and self-healing control of distributed intelligent power distribution network according to safety check result; step S8, feedback of self-healing control situation of distributed intelligent power distribution network.The present application improves fault recovery speed, accuracy and reliability of distributed intelligent power distribution network.

This invention discloses an optimized method for deception jamming of frequency-hopping radar based on a four-dimensional antenna array. This method addresses the problem of existing four-dimensional antenna arrays failing to jam against broadband radars with rapidly changing frequencies due to beam squint effects. It constructs a broadband array pattern model with the entire radar frequency hopping point set as variables and establishes a hierarchical optimization cost function. This function prioritizes suppressing the echo from the true target direction to below a safe threshold across the entire frequency band, and then maximizes the minimum gain in the direction of the false target. A differential evolution algorithm is used to globally optimize the RF switching timing parameters of each array element, obtaining a set of frequency-independent robust optimal timing sequences. Loading these timing sequences into the controller enables the four-dimensional antenna array to stably achieve deception jamming effects that conceal the true target and enhance the false target across the entire frequency hopping bandwidth of the radar without real-time adjustments. This effectively overcomes the aperture crossing effect and ensures the robustness of jamming when the enemy radar frequency changes.

The invention discloses a clutch plate type middle power input double-acting-force self-adaptive variable-speed electric driving system, the position where an inner ring of a friction plate type clutch transmits power to a transmission shaft sleeve is located between a first elastic piece and a second elastic piece, and all the advantages of the double-acting-force self-adaptive variable-speed electric driving system are achieved. Two sets of variable-speed elastic pieces are adopted, the action of the two attributes of traction force and running resistance is fully utilized, gear shifting is achieved, running at the corresponding gear is kept under the set condition, two different power outputs are transmitted, and the requirements of various complex working conditions of vehicle acceleration, climbing and high-speed running are met; meanwhile, the node position serving as power output between the two sets of elastic pieces is adopted, interference between power output and driving resistance and traction force acting on the elastic pieces is avoided, the target that the driving resistance and the traction force act on the elastic pieces is clearer, and therefore the component arrangement space is saved, and the cost is reduced. Jamming and time delay in the gear shifting process are avoided, gear shifting of the speed control system is sensitive, the pause feeling is avoided, and therefore the power transmission efficiency of the speed control system is guaranteed.