5results about How to "Realize real-time compensation" patented technology

The application discloses a shrinkage-compensating concrete containing acid-free weak base expandable graphite and a preparation method thereof. The concrete comprises cement 200-500 parts, mineral admixtures 50-200 parts, fine aggregate 600-800 parts, coarse aggregate 1000-1300 parts, water 120-200 parts, additive 5-15 parts and acid-free weak base low-temperature expandable graphite 15-75 parts. The expansion trigger temperature of the graphite is 90-100 DEG C, and the pH value is 6.0-8.0. The method comprises the following steps: firstly, uniformly mixing and stirring cement, mineral admixtures, fine aggregate, coarse aggregate and acid-free weak base low-temperature expandable graphite to obtain dry mixture B; secondly, mixing water and additive and adding the mixture into the dry mixture B to uniformly stir to obtain a concrete mixture; and thirdly, forming the concrete mixture, carrying out steam curing after final setting, naturally cooling to room temperature and obtaining the shrinkage-compensating concrete. Therefore, the concrete self-shrinkage can be precisely and efficiently compensated in the steam curing process of the concrete.

This invention provides a distributed time synchronization method suitable for UAV swarms, comprising: Step 1: Synchronization information exchange between adjacent nodes of the UAVs; Step 2: Propagation delay compensation, using the synchronization interaction information received from neighbors within the synchronization period of Step 1 to compensate for the time-varying propagation delay timestamps; Step 3: Logical clock adjustment parameter update, combining the previously obtained synchronization information to estimate and update the logical clock parameters, completing the final time synchronization; Step 4: Reinforcement learning-based adaptive selection of the synchronization period, using an adaptive period decision mechanism based on reinforcement learning to dynamically and adaptively output the optimal synchronization broadcast period in the current state. This method overcomes the synchronization error caused by time-varying propagation delay in high-mobility environments; it adaptively adjusts the synchronization interaction period according to the actual clock state of the swarm, effectively reducing the system's communication overhead and energy consumption while ensuring high-precision time synchronization.

The application provides a reaction wheel compensation torque calculation method, device and electronic equipment, wherein the calculation method comprises: calculating the instruction torque allocated by the reaction wheel in the reaction wheel group based on the target value of the attitude control torque, to calculate a target speed increment, then calculating a first difference value between the target speed increment and an actual speed increment, and calculating a first compensation torque based on the first difference value by using proportional integral control, calculating a second compensation torque based on the sliding smoothing of the first compensation torque in the current M periods and the previous periods, performing low-pass filtering on the second compensation torque in the current period and the second compensation torque in the previous period to obtain a third compensation torque, compensating the third compensation torque to the instruction torque of the reaction wheel, and performing amplitude limiting output to the corresponding reaction wheel, so that the three-axis control torque output by the reaction wheel group follows the three-axis instruction control torque of the satellite, avoids the risk of unstable control, and improves the stability and control precision of the spacecraft attitude control.

This application relates to a gain compensation method, a module, a computer-readable storage medium, and a SPECT system. The gain compensation method includes: acquiring angle data of the photomultiplier tubes (PMTs) of a detector; the angle data characterizing the relative angle between the PMTs and the ambient magnetic field; and outputting a voltage compensation signal to an adjustable power supply circuit based on the angle data. The voltage compensation signal instructs the adjustable power supply circuit to adjust the supply voltage to each PMT so that the PMT output amplitude reaches the expected output amplitude. This gain compensation method can overcome the influence of changes in the ambient magnetic field on the PMT output signal, improving the imaging quality and diagnostic accuracy of the SPECT system.

The application discloses a kind of acoustic sensing demodulation system and method based on lithium niobate electro-optic modulation and polarization interference, the light emitted by low coherence light source (1) enters fiber optic circulator (2) into fiber optic Fabry-Perot sensor (3), and the interference light beam returned after dynamic signal modulation is introduced into fiber optic beam splitter (4), and is divided into two-path low coherence demodulation processing and another path self-compensation processing;All paths are accessed collimating mirror to collimate light beam, form three path space beams, obtain two low coherence interference signals and one real-time compensation interference signal;Photoelectric detector collects analog signal, and converts into digital signal;Data processing is carried out to digital signal, completes the normalization of interference signal and the compensation processing of normalization result, and the signal after compensation processing is demodulated, and the phase information of cavity length change is obtained.The application realizes high-stability fiber optic Fabry-Perot F-P dynamic phase demodulation.