2results about How to "No stability issues" patented technology

This invention discloses a method for extracting differential signals based on a parallel staircase differentiator, comprising the following steps: S1, inputting the input signal into the parallel staircase differentiator sQ. b (s) Operation module; S2, sQ b (s) The arithmetic module performs operations on the input signal to obtain the first-level signal; S3, iterative calculation is performed, and the first-level signal is passed through the P of the parallel ladder differential n-1 times. b (s) The operation module performs the operation and then inputs it to the adder operation module of the parallel ladder-type differentiator, which adds it to the original (n-1)th level signal to obtain the nth level signal; S4, output the nth level signal, which is the differential signal of the extracted input signal; The parallel ladder-type differentiator of the present invention adopts a parallel ladder structure and uses the method of series partial summation to improve the differential tracking effect. There is no stability problem, and the initial differential peak phenomenon of digital tracking differentiators is avoided. At the same time, the differentiator is implemented using conventional analog circuits, which has higher real-time performance and lower cost than digital tracking differentiators.

The application provides a spacecraft power supply control circuit and method, which are used for realizing MPPT control and shunt control functions of a spacecraft power supply. The control strategy in the application is based on a double-tube buck circuit, which is composed of an MPPT circuit, a PI regulator, a hysteresis comparator, a comparator, an amplitude switching circuit, a PWM circuit, an OR gate and a driver. The application realizes the combination of MPPT control and shunt control by using an analog circuit control mode, and realizes the autonomous control of power supply state switching by using a hardware circuit mode.