4results about How to "Accurate balance" patented technology

The invention discloses an ore dressing device and method based on parameter intelligent control and dust removal recovery, and relates to the technical field of ore dressing. The device comprises an ore crushing and screening mechanism, a dust removal and recovery mechanism and an intelligent control module, the ore crushing and screening mechanism is provided with an ore recognition device used for recognizing ore types and a dust monitoring unit used for detecting the dust concentration in a box body, and the intelligent control module is in signal connection with the ore recognition device and the dust monitoring unit. And the control module is in control connection with the crushing assembly and the dust collector, adjusts working parameters of the crushing assembly according to the ore category, and adjusts working parameters of the dust collector according to the dust concentration. The method executes a parameter identification and control process based on the device. Crushing parameters can be automatically matched according to the ore characteristics, the dust collection power is adjusted in real time according to the dust generation amount, cooperative improvement of the crushing and screening efficiency and the dust removal effect is achieved, and meanwhile energy consumption is reduced.

The invention discloses a transmission link quality-based geometric transformation precision adaptive adjustment mechanism, which comprises the following steps of: acquiring a basic quality parameter, a dynamic stability parameter and a link type parameter in real time, and calculating a comprehensive link quality score through a weighting algorithm of basic fixed weight + scene dynamic adjustment; a dynamic mapping model of quality scores and encryption strength is constructed, machine learning adaptive optimization and user-defined intervention functions are fused, and comprehensive scores are divided into five grades corresponding to different geometric conversion precision and encryption enhancement strategies. The beneficial effects of the invention are that the technical scheme breaks through the limitation that the prior art only depends on single parameter adjustment through an innovative multi-dimensional link quality evaluation system and a dynamic mapping model, can accurately adapt to complex and changeable network environments, and can accurately adapt to complex scenes such as multi-device interference and signal abrupt change. And efficient and stable data transmission can still be maintained.

This invention discloses a PCB high-current layout structure and method based on EMB (Electronic Power Module), relating to the field of PCB high-current layout technology. It includes a PCB body, on which high-current trace areas corresponding to the three-phase motor power supply circuit of the EMB system are divided. Each high-current trace area is provided with at least one current-carrying enhancement structure. The current-carrying enhancement structure includes any one or more combinations of a board-edge exposed copper solder enhancement structure, a segmented metal block current-carrying structure, and an integral polygonal metal current-carrying structure. This invention significantly improves the current-carrying capacity of high-current traces without increasing the PCB area through three flexibly combinable current-carrying enhancement structures, perfectly adapting to the compact design requirements of EMB systems with limited installation space. The current-carrying enhancement structure also has a heat dissipation enhancement function, significantly improving heat dissipation efficiency, effectively solving the problem of localized overheating of traces under instantaneous high-current conditions, delaying PCB aging, and improving the operational stability of the EMB system.

The invention belongs to the technical field of fuel cell testing, and particularly relates to an off-grid fuel cell testing device, a control method thereof and a medium. The method comprises the following steps: after a testing device reaches a stable state, when transient characteristic testing of the fuel cell is carried out, a DC / AC converter of the testing device adopts voltage closed-loop control; when a fuel cell long-term steady state test or a working condition change test is carried out, the DC / AC converter adopts open-loop control; in the voltage closed-loop control, the deviation between the actual voltage of a direct current bus at the direct current side of the DC / AC converter and the reference voltage of the direct current bus is input into a voltage closed-loop controller, and a d-axis voltage reference value used for generating a modulation wave is obtained; and in the open-loop control, obtaining the d-axis voltage reference value according to a modulation degree and a modulation coefficient. The technical problem that in the prior art, a single converter control strategy cannot meet the fuel cell test requirement is solved.