5results about How to "Meet basic requirements" patented technology

The present invention discloses a radio frequency power supply with phase synchronous frequency modulation function, belonging to the technical field of radio frequency power supply. It mainly includes a power supply module, a radio frequency module and a digital control module. A digital phase-locked loop is arranged in the digital control module, and the digital phase-locked loop includes a phase detector, a loop filter and a voltage-controlled oscillator; the radio frequency input synchronization signal of the radio frequency module is multiplied by the output signal of the voltage-controlled oscillator, and the phase difference information between the two can be obtained after calculation. At this time, the phase difference information is a signal quantity with large fluctuations. The phase difference information is filtered through a loop filter, and then added to the local oscillator signal output by the voltage-controlled oscillator to obtain a local oscillator signal with a new frequency and a new phase. After a period of closed-loop operation, the filter control signal output by the previous loop filter is used. The radio frequency power supply with phase synchronous frequency modulation function of the present application can achieve the effect of compensating for the phase drift caused by the temperature drift of electronic devices.

This invention discloses a pneumatic vacuum assembly for an arc heater, comprising a plug, a housing, a seal, a spring, a connecting rod, a ejector pin, and a piston. Both the plug and the housing are cylindrical structures connected by coaxial threads. The seal is placed between the plug and the housing. The spring is positioned between the plug and the connecting rod, with the plug determining the upper limit of the spring's horizontal position. Changing the spring tension pushes the connecting rod and ejector pin, causing the piston to move vertically up and down. When the spring is in a relaxed state, the space enclosed by the housing, connecting rod, ejector pin, and piston forms a vacuum channel. When the spring is in a compressed state, the space enclosed by the housing and piston forms a vacuum-stopping channel. The bottom of the vacuum channel is connected to the inner cavity channel of the arc heater. An external vacuum pump is connected to the vacuum channel through a radial hole on the left side of the housing. This invention can be applied to arc heaters in aerospace aerodynamic thermal protection ground simulation tests.

The present invention discloses an air volume regulating device for an air-cooled refrigerator, and relates to the technical field of refrigerators. The present invention comprises an air duct main body, a fixed outer cover is arranged on the outer surface of the air duct main body, and a sliding groove is provided on the surface of the fixed outer cover; a groove is provided in the horizontal direction of the air duct main body, a through hole is provided on one side of the groove, and a blind hole is provided on the other side of the groove, and both the through hole and the blind hole are connected to the groove, and a ventilation regulating component for realizing the air volume regulating function is clamped in the groove, and slides horizontally in the groove; the ventilation regulating component comprises a lining box and a regulator; the regulator is arranged on the outer surface of the lining box, and the regulator passes through the sliding groove and slides in the sliding groove. The present invention realizes the adjustment of the air volume at different positions through the design of a lever or a knob structure, so that the air volume distribution of each compartment can meet the basic requirements of the user; in addition, the air volume regulating device of the present invention can be used not only in refrigerated compartments and freezer compartments, but also in compartments with any refrigeration temperature zone requirements.

The present invention proposes a ciphertext determination method, system and device based on a transfer matrix, the method comprising: reading a character string to be determined; constructing a transfer matrix for the character string to be determined; counting the number of non-zero elements X in the transfer matrix, if X < 3, the character string to be determined is plain text; if X ≥ 8, the character string to be determined is ciphertext; if 3 ≤ X < 8, using a preset algorithm to calculate the transfer density coefficient S of the transfer matrix; if S < 0.86, the character string to be determined is plain text; if S ≥ 0.86, the character string to be determined is ciphertext; outputting and displaying the determination result of the character string. The present invention can extract the characteristics of the character string with the help of the transfer matrix, quantify the probability that the character string contains readable information, thereby meeting the business needs of ciphertext character recognition.

The application provides a shift signal interaction method, an engine controller, a readable storage medium and a vehicle. The interaction method comprises the following steps: in a first stage of a shift process, filtering a shift signal used for representing non-transmission intervention engine torque in the stage, and sending the filtered shift signal to a transmission controller; in a second stage of the shift process, filtering a shift signal used for representing non-transmission intervention engine torque in the stage, fusing the filtered shift signal and a non-filtered shift signal, and sending the fused shift signal to the transmission controller until the fused shift signal returns to the non-filtered shift signal, so as to complete the shift process. The application can optimize the signal quality of the interaction control of the shift process of the engine controller and the transmission controller, and improve the shift quality.