2results about How to "Improve Feedback Accuracy" patented technology

This application provides a self-feedback jitter control system for laser gyroscopes, relating to the field of laser gyroscope technology. It includes a jitter controller, a drive amplifier circuit, a jitter wheel, a sampling resistor R, and a jitter signal extraction circuit. The jitter controller outputs a jitter control signal, which is input to the drive amplifier circuit. The drive amplifier circuit amplifies the jitter control signal and outputs a jitter drive signal, which is connected to both the jitter signal extraction circuit and one end of the sampling resistor R. This application provides a self-feedback jitter control system for laser gyroscopes that eliminates the need for separate piezoelectric ceramic sensors, magnetoelectric sensors, or optical sensors found in traditional jitter control systems. It eliminates the need for additional piezoelectric ceramic sensors and allows all piezoelectric ceramics on the jitter wheel to be used for driving, significantly improving jitter drive efficiency, saving on sensor hardware procurement, installation, and maintenance costs, and simplifying the overall system structure.

The invention provides a non-contact valve position feedback method and device, relates to the technical field of valve position monitoring, is applied to an electric control valve, and comprises the following steps: acquiring reference capacitance values and position information of a plurality of capacitive sensing electrodes arranged along the displacement direction of a valve rod, and responding to the displacement of the valve rod; collecting the current capacitance values of the plurality of capacitive sensing electrodes in real time, performing signal preprocessing on the current capacitance values of the plurality of capacitive sensing electrodes, calculating the capacitance variation of each capacitive sensing electrode based on the preprocessed current capacitance values and the corresponding reference capacitance values, and calculating the capacitance variation of each capacitive sensing electrode according to the capacitance variation. And determining the current position information of the valve rod on the basis of each capacitance variation and the corresponding position information, thereby solving the technical problem that the valve position feedback precision is difficult to guarantee because the existing valve position feedback technology generally faces inherent limitations such as mechanical wear, complex structure or weak anti-interference capability. The effect of improving the valve position feedback precision is achieved.