6results about How to "Implement Feedback Control" patented technology

The invention provides a microwave control method and a microwave controller for an electron paramagnetic spectrometer. The microwave control method for the electron paramagnetic spectrometer comprises the following steps: controlling a microwave source to generate a microwave signal for paramagnetic resonance detection; a first power division signal and a second power division signal are obtained through distribution; inputting the first power division signal into a resonant cavity, detecting a reflection signal of the resonant cavity after resonance absorption of the to-be-detected sample to obtain a first detection signal, and performing phase shift on the second power division signal to obtain an orthogonal local oscillation signal; performing frequency mixing on the first detection signal and the local oscillator signal to obtain an I down-conversion signal and a Q down-conversion signal; performing data processing to obtain detection result information; and error analysis is performed and the microwave source is corrected, so that the frequency of the output microwave signal is kept at the first working frequency. By establishing a feedback loop from output to microwave signal input of the microwave source, feedback control of microwave signals is realized, and high-precision microwave control in the electron paramagnetic spectrometer is further realized.

The utility model belongs to chemical engineering separation field especially relates to a spiral guide plate energy -saving rectifying tower, including support plate, rectifying tower body, liquid inlet pipe, float valve tray and guide plate etc.

The utility model provides a robot motion trail simulation device which comprises a case, an adjusting mechanism, a robot body and a fixing mechanism, the top end of the case is provided with the adjusting mechanism, the periphery of a supporting plate is fixedly connected with electric telescopic rods, one end of each electric telescopic rod is fixedly connected with a first arc-shaped plate, and the other end of each electric telescopic rod is fixedly connected with a second arc-shaped plate. And the outer wall of the first arc-shaped plate is sleeved with a first arc-shaped sleeve, and the combination of an electric telescopic rod, the first arc-shaped plate, the first arc-shaped sleeve, a second arc-shaped plate, a second arc-shaped sleeve and other parts in the adjusting mechanism enables the robot motion trail simulation environment to be flexibly adjusted according to actual requirements. Different working spaces and motion scenes can be simulated through stretching and retracting of an electric telescopic rod and change of the position of a second arc-shaped plate on an adjusting rod, and the simulation accuracy and flexibility are improved.

This invention discloses a quantitative coal mining control system for preventing excessive gas levels in coal mines, including a gas volume fraction monitoring probe, a safety early warning and monitoring module, and a gas exceeding limit quantitative control module. The gas volume fraction monitoring probe includes a monitoring probe T1 located at the end of the transport roadway near the coal mining face, a monitoring probe T2 located at the coal mining face, a monitoring probe T3 located at the end of the return airway near the coal mining face, a monitoring probe T4 located at the end of the return airway away from the coal mining face, and monitoring probes T1, T2, T3, and T4 are respectively connected to the safety early warning and monitoring module and the gas exceeding limit quantitative control module.

The application discloses a kind of based on optimization fuzzy PID's coating equipment servo motion control method and system.Method includes: build virtual simulation platform, motion model is constructed on the simulation platform, PI coating equipment system external environment data is input into motion model, and the target rotating speed of PI coating equipment even glue roller is output;The actual rotating speed of even glue roller on PI coating equipment is measured;Difference is obtained between target rotating speed and actual rotating speed, and the change rate of bias is obtained by derivation of the rotating speed bias with respect to time;Rotating speed bias and bias change rate are input into fuzzy PID controller, and the PID control parameter is obtained by using fuzzy PID algorithm combined with adaptive particle swarm optimization algorithm, and PID control parameter is input into PID controller to adjust, so that the actual rotating speed of even glue roller reaches target rotating speed.The application can effectively improve the control precision of PID control algorithm, and improve the stability of PID control algorithm.

This invention discloses an acoustic valve microrobot manipulation system and method. An acoustic transducer is movably mounted below a mechanical frame, which has a microchannel structure. A coupling layer is provided between the acoustic transducer and the microchannel structure. The acoustic transducer provides a focused acoustic beam that acts within the microchannel structure to generate a standing wave sound field. This standing wave sound field forms a spatially constrained sound pressure gradient region within the microchannel structure, constructing an acoustic potential well structure. A bright-field optical path and an image recognition module are both mounted on the top of the mechanical frame. The image recognition module is used to identify the position of targets within the microchannel structure. A motion control module is movably mounted at the bottom of the acoustic transducer to regulate the signal of the acoustic transducer and control its displacement on the mechanical frame. This invention enables selective manipulation of targets by utilizing the boundary effect of the focused field, integrating functions such as translation, sorting, and enrichment.