33results about How to "Eliminate glitches" patented technology

The invention provides a power good signal output method and a power good signal output device. The power good signal output device comprises a voltage dividing module, a forward direction judgment module or a reverse direction judgment module, a logic and gate, wherein the voltage dividing module is provide with an enable switch and is used for converting an input power supply voltage into a detection divided voltage to be judged, and the enable switch responds to an enable signal; the detection divided voltage is judged by means of the forward direction judgment module when the enable switch is connected to a position closed to a high potential end in the voltage dividing module, the detection divided voltage is judged by means of the reverse direction judgment module when the enable switch is connected to a position closed to a low potential end in the voltage dividing module, and a marking signal is output; and the logic and gate is used for processing the enable signal and the marking signal, and outputting a power good signal. The power good signal output method and the power good signal output device can achieve zero-power-consumption static current in a deep sleep or shutdown mode, can solve the competition and risk problems caused by different time delay of the enable switch and the judgment module, eliminates burr phenomenon in actual response output, and increases judgment accuracy of a power good state.

The invention belongs to the technical field of signal processing, and discloses a multi-sensor fusion dynamic balance analysis method, system, equipment, and medium. The multi-sensor fusion dynamic balance analysis method includes: collecting original vibrations including horizontal and vertical directions from industrial sites signal; determine the signal source to be analyzed through the amplitude and similarity information; decompose the original signal with the help of target empirical mode decomposition; determine the signal to be analyzed by blind source separation according to the similarity between the decomposed result and the original signal; use the target blind source The separation method realizes the decomposition of the signal; combines the results of blind source analysis to identify dynamic balance components; calculates the one-octave frequency amplitude and phase information of the blind source separation signal where the dynamic balance component is located through Fourier transform; uses the influence coefficient method to carry out dynamic balance weighting Calculate and obtain the dynamic balance calculation result. The invention can effectively remove the interference of other fault information mixed in the dynamic balance analysis frequency, essentially realize the dynamic balance of the equipment, and prolong the service time of the equipment after the dynamic balance.

The invention discloses a multifunctional nozzle of a fused deposition type 3D printer, which comprises a nozzle body, on which a high-pressure gas conveying device, a gas conveying layer and a gas guiding device are arranged; the high-pressure gas conveying device passes through the gas conveying layer It communicates with the air guide device, the air guide device is arranged at the nozzle mouth of the nozzle body, the inner ring of the air guide device is provided with three ring-type air passages, and the tails of the three ring-type air passages are connected, and the connecting parts are provided with a swing Air valve, the swing air valve is used to switch the on-off of different air passages and the high-pressure gas delivery device; the three annular air passages communicate with the nozzle openings respectively. When the nozzle completes the work of a printing area, stops spraying and is about to move into the next printing area, the middle air channel and the lower air channel spray air at the same time, blocking the molten raw material that is about to slide down at the nozzle mouth and making the printing that has not been completely solidified The layer is fused with the bottom printing layer; when the printing work is finished, the upper air channel continues to spray air to clean the nozzle body.

A multi-phase clock switching device includes a plurality of phase selection circuits. The phase selection circuit is used to receive a plurality of phase clock signals and determine how to output the phase clock signals to generate an output signal according to a switching signal. The phase selection circuit includes a selection unit and a protection unit. The selection unit receives at least a phase clock signal and determines how to output a phase clock signal according to the at least a phase clock signal and a selection signal. The protection unit determines how to generate the selection signal according to the phase clock signal and the switching signal.

The invention discloses a mechanical-hydraulic servo control device for multi-shaft automobile pure rolling steering. The mechanical-hydraulic servo control device is applied to the field of automobile steering. The mechanical-hydraulic servo control device mainly comprises a switch valve, a pressure reducing valve, a one-way valve, a transverse pull rod telescoping cylinder, a mechanical-hydraulic servo control valve, an angular displacement amplifying mechanism and the like. The mechanical-hydraulic servo control valve is used for carrying out servo control over the transverse pull rod telescoping cylinder, and it is effectively ensured that all steering wheels meet the Ackerman steering condition; by means of negative feedback control of the transverse pull rod telescoping cylinder and the mechanical-hydraulic servo control valve, high-precision dynamic pure rolling steering of an automobile is achieved; oil is supplemented to a feedback cavity automatically through the switch valve, the pressure reducing valve and the one-way valve, and generation of negative pressure is eliminated. Preferably, by means of a segmented multi-stage cam curve in the mechanical-hydraulic servo control device, the transverse pull rod telescoping cylinder can be locked mechanically and hydraulically, the risk in the high-speed traveling process is reduced while the pure rolling steering effect of the system is guaranteed, and the safety of high-speed traveling of the multi-shaft automobile is promoted.

The invention discloses a method and device for extracting a magneto-rheological polishing removal function. The method includes: acquiring surface shape detection data of a substrate element before and after spot sampling; position marks are placed on the edge of the substrate element ; According to the surface shape detection data and the position mark of the substrate element before and after the spot picking, calculate the residual data; carry out median filter processing to the residual data; filter the residual data after processing , using an elliptic arc to approximate the contour of the removal function, and generating multiple removal functions containing the same parameter; performing data offset and averaging operations on the plurality of removal functions containing the same parameter, and extracting the removal function. The method can accurately extract the removal function of magnetorheological polishing, and improve the accuracy of removal function and the precision of magnetorheological processing.

The invention includes following parts and structures: triggering delayer includes several pieces of T'trigger connected to each other one by one in sequence; output end of the previous T'trigger is connected to CLK end of the next T'trigger; CLK end of first T'trigger is connected to external clock pulse; output end of the last T'trigger is the output end of the delayed signal. Method of use is as following: setting up RST end and SET end of each trigger according to delay time, and then disabling two pieces of input end; inputting fixed clock pulse. Using the output of final trigger as delayed output signal, the invention simplifies structure of circuit, and solves the issue that additional gate control circuit is needed in general asynchronous trigger. Features are: easy of changing or controlling delayed time, and suitable to instance of large delayed time needed.

The present invention provides a method and device for outputting a power good signal. The device includes: a voltage dividing module with an enabling switch, which is used to convert the input power supply voltage into a detection divided voltage that can be judged. The enabling switch In response to the enable signal, the power supply voltage is a positive value or a negative value; a forward judgment module or a reverse judgment module is used to judge the detection divided voltage and output a flag signal; a trigger is used to process the enable Signal and flag signal, output power good signal. The present invention uses a trigger to process the enable signal and the flag signal to output the power good signal, which can not only realize the static current of zero power consumption in the deep sleep or shutdown mode, but also solve the competition caused by the different delays of the enable switch and the judgment module And risky problems, eliminate the glitch phenomenon in the actual response output, improve the judgment accuracy of the good state of the power supply, and improve the overall performance of the display driver chip.

The invention discloses an electric vehicle control equipment to provide an electric vehicle controller with advantages of good performance, convenient in maintaining and low production cost. The electric vehicle controller comprises a cavity type shell, a circuit board disposed in the shell and an end cap disposed on the outer end of the shell, and an inner pad disposed between the shell and theend cap. An inner protuberant ring rib (21), which fits tightly inner surface of the shell, is formed on the end cap; an inner protuberant ring rib (31), which is embed into the inner surface of therib (21), is formed on the end cap; and the rib (31) supports the rib (21). The controller in the invention achieves better sealing and waterproof performance, simple installation and convenient maintenance, is a replacing product to the existing electric vehicle controller.

The invention discloses a no-burr CMOS RF frequency divider which is based on multi-phase shifting. The invention can implement dual mode output of 4 / 5 division frequency ratio, radically eliminates the possibility of burr signal generation when the phase is shifted, and improves the working speed of the RF frequency divider. The no-burr CMOS RF frequency divider comprises a four-phase prescaler which is used for providing four benchmark signals with difference of 90 DEG sequentially to a high-speed output selection circuit; the output terminal of the high-speed output selection circuit comprises a 'logic or' operation; a logic control circuit is used for outputting enabling signals which can be shifted according to the output signals of the high-speed output selection circuit.

The invention discloses a sub-pixel positioning method for the midline laser center of a three-dimensional laser scanning system. Threshold segmentation is performed on the image, and the line laser is roughly extracted; the burr phenomenon of the line laser after rough extraction is eliminated, and the width of the line laser is further reduced; the sub-pixel level coordinates of the center of the line laser are obtained by using the improved center of gravity method, and then the Hough transform is used Corrects false object pixels in sub-pixel coordinates. This positioning method combines the improved center-of-gravity method and Hough transform, which can meet the needs of the 3D laser scanning system to obtain the sub-pixel coordinates of the line laser center in real time and accurately, and realize the sub-pixel precise positioning of the line laser center.

The invention relates to the field of fully digital spread spectrum and discloses a synchronous clock extraction method for a receiving end in a fully digital spread spectrum communication system. The received data and PN codes or reverse codes of the PN codes are subjected to autocorrelation operation respectively at the receiving end, the obtained value of the clock signal frame-clk0 can serve as the end mark when the receiving end receives a complete spreading code in case of the absence of noise in the channel, and the complete spreading code refers to the spread data received in an original bit clock period; however, when the data are transmitted in the channel with noise, severe burr phenomena exist in the frame-clk0, the frame-clk0 cannot accurately serve as a synchronous clock of a receiving end decoding module, the coarse clock signal frame-clk0 containing burrs is subjected to repeated shift addition processing to obtain an accurate clock signal frame-clk so as to serve as a synchronous clock of the spread spectrum receiving end through the programmability of a field programmable gate array (FPGA), and the decoding error phenomenon caused by the asynchronous clock can be avoided.