4results about How to "Achieve controllable" patented technology

The invention belongs to the technical field of virtual power plant resource scheduling, and discloses a virtual power plant flexible resource calling method and device based on a power grid visual angle and a medium, so as to solve the problems that the contribution of flexible resources to the state change of a power distribution network is ignored, the performance evaluation is inaccurate, the response result is not in place, and the response intention is not clear. The method comprises the following steps: acquiring real-time measurement data of each flexible resource of each virtual power plant and grid-connected point topological structure data, and establishing a power grid view angle; obtaining the response capability and historical response data of each flexible resource of each virtual power plant to calculate the contribution degree to a power grid node, the excitation response intention, the response qualification rate, the response rate, the response preparation time and the response duration to construct a user portrait; and obtaining a response demand or an auxiliary service interaction adjustment demand generated by the power grid, and calling flexible resources to execute an interaction response in combination with the constructed power grid view angle and the user portrait so as to meet whole-network and local real-time demands of the power grid, thereby completing flexible resource calling.

This invention relates to a grinding repair method for a central drive spline shaft, belonging to the field of repair technology. The invention proposes a grinding repair method for a central drive spline shaft. This method involves micro-grinding of the splines on a drive shaft with out-of-tolerance tooth direction but whose spline tooth thickness meets process requirements and has a significant remaining lifespan. This restores the technical condition of the spline teeth on the central drive spline shaft to its original process level, extends the lifespan guarantee capability of the drive shaft, and achieves cost reduction and efficiency improvement.

The utility model discloses an automatic test system of a radio frequency chip, which comprises a test machine, a radio frequency chip, an upper computer, an STM32 external device and an SPI switch, a power supply module of the test machine supplies power to the radio frequency chip, the STM32 external device and the SPI switch, the test machine is provided with four signal lines which are connected with the STM32 external device, and the STM32 external device is connected with the upper computer. The SPI interfaces of the test machine and the STM32 external equipment are respectively connected to the SPI switch, the common end of the SPI switch is connected to the SPI interface of the radio frequency chip, the upper computer participates in the dynamic debugging of the radio frequency chip port, the power supply module of the test machine is connected with the radio frequency chip and the STM32 external equipment, the STM32 calibration is used, the program is more convenient for the modular design, and the debugging is also convenient.

The present invention relates to a simulated rapid decompression chamber for civil aircraft, characterized in that it comprises a simulated window, a variable adjustment device matched with the simulated window, and a negative pressure exhaust system arranged outside the chamber and connected to the simulated window; the variable adjustment device comprises a template adapted to the simulated window, and a locking member for detachably installing the template on the simulated window; the negative pressure exhaust system comprises a negative pressure tank, a negative pressure pipeline, an electric control gate valve and a negative pressure cover, the negative pressure tank is provided with a vacuum pump, one end of the negative pressure pipeline is connected to the negative pressure tank, and the other end is connected to the negative pressure cover, the negative pressure cover is arranged outside the simulated window, and the negative pressure pipeline is equipped with an electric control gate valve. The present invention realizes the adjustable and controllable process of simulating the loss of confidentiality and decompression of the aircraft. It provides a simulation platform and equipment guarantee for the adaptability training and emergency handling drills of aircraft pilots and crew members.