7 results about "Electronic feedback" patented technology

The utility model discloses an assembly error-proofing testing fixture and a fork truck gearbox multi-disc clutch, which comprise a main body rod, a plurality of guide teeth are arranged on one side of the main body rod at equal intervals, a guide groove is arranged between every two adjacent guide teeth, a pressure sensor is arranged on the inner wall of each guide groove, a display screen is arranged at the top of the main body rod, and the display screen is connected with the main body rod. Wherein the pressure sensor is electrically connected with the display screen. According to the detection tool integrating physical limiting and electronic feedback, through the fusion design of the guide teeth and the sensor, installation errors generated by the assembly sequence, number and direction between the steel sheets and the friction sheets can be rapidly intercepted, plug-and-play detection is achieved, the rework rate is reduced, and the assembly efficiency is improved; the detection tool designed by the utility model can effectively detect the phenomena of neglected assembly and wrong assembly in the assembly of the multi-disc clutch, and human errors are reduced from the source and the product consistency is ensured by combining the physical structure design of the detection tool with the use of the embedded sensor.

This invention belongs to the field of optoelectronic technology, specifically relating to a novel synthetic dimension optoelectronic oscillator device and its implementation method for generating arbitrary chirped signals. This invention utilizes a high-speed phase modulation unit based on lithium niobate technology as the core component. By adjusting the delay difference between the phase drive signal period and the optoelectronic oscillator, it achieves a deep fusion of optical dimension synthesis and electronic feedback oscillation, enabling the generation of microwave signals with arbitrarily adjustable instantaneous frequencies. Furthermore, by controlling the time mismatch and drive signal voltage, the bandwidth and repetition rate of the output signal can be flexibly tuned. This invention combines the advantages of photonic bandwidth and flexibility with the stability and precision of electronics, enabling the generation of broadband, highly stable complex waveforms, and is expected to meet the application requirements of next-generation intelligent sensing systems for high-resolution detection and flexible waveform generation.

The invention provides a pressure primary metering system and an optical pressure gauge, and relates to the technical field of pressure gauges, and the system comprises a vacuum sealing cavity, a laser output module, a dual-channel resonant cavity and a processing module. The dual-channel resonant cavity is located in the vacuum sealing cavity and comprises a vacuum reference resonant cavity and an open-type measurement resonant cavity which are formed based on the same substrate, so that the cavity deformation of the two resonant cavities can be mutually counteracted. The reference resonant cavity forms a first transmitted light signal based on the first laser beam, and the measurement resonant cavity forms a second transmitted light signal based on the second laser beam. The processing module comprises a frequency shift unit and a processing unit, before and after the vacuum sealing cavity is inflated, the frequency shift unit carries out frequency shift on the second laser beam and transmits the second laser beam to the measurement resonant cavity, and the processing unit obtains the frequency of the second laser beam based on a second transmission light signal; and the internal pressure of the vacuum sealing cavity is obtained based on the frequency difference between the first laser beam and the second laser beam, so that introduction of a complex frequency locking light path and an electronic feedback control system is avoided.

The utility model discloses a winding machine for winding an SMD (Surface Mount Device) carrier tape. The winding machine is improved aiming at the three problems of large tension fluctuation, low mechanical limiting safety and poor winding positioning accuracy in the prior art. Comprising a vertical feeding channel formed by a main body frame, a feeding wheel and a guide wheel; the tension adjusting device is in linkage with a supporting rod to swing through a fixing rod assembly, an encoder detects the rotation angle in real time and feeds back a control motor to form closed-loop adjustment, and the problem of response lag of traditional passive tension control is solved. The second fixing rod is arranged below the supporting rod, and collision damage is reduced through 5-30 mm spacing limiting and a composite buffering pad. The limiting structure of the rail clamping device restrains the swing angle of the clamping rod through the rolling wheel and the baffle, and the rolling positioning precision is improved in cooperation with anti-skid lines of the carrier tape positioning clamping piece. According to the scheme, dynamic electronic feedback and mechanical protection design are combined, and the technical effects that tension is stable, the service life of parts is long, and the winding alignment degree is high are achieved.

The invention relates to the technical field of drug sustained release, and particularly discloses a temperature-sensitive hydrogel microneedle array drug sustained release method based on electronic feedback, which comprises the following steps: preparing a temperature-sensitive hydrogel precursor solution to obtain a pre-prepared mixed solution; injecting the pre-prepared mixed solution into a microneedle mold to form a drug-loaded temperature-sensitive hydrogel microneedle array; conducting films are electrically deposited on the surface of the initial micro-needle array and the micro-needle channel, and an electric control micro-permeable film micro-needle array is obtained; attaching the electrically-controlled micro-permeable membrane micro-needle array to the surface of the skin to obtain an adjusted micro-permeable array; when the local temperature of the human body reaches a second preset threshold value, the adjusted micro-transparent array releases the medicine; according to the invention, a plurality of independent chambers are arranged in the same microneedle array and are respectively loaded with traditional Chinese medicine nano preparations with different functions, so that directional release of each component in respective optimal environments can be realized. Active substances such as the middle-jiao-regulating pill extract, the health-care pill extract, tetrahydropalmatine and the like are free from compatibility conflict, so that the maximum exertion of respective drug effects is ensured.

The invention relates to a method and a device for stabilizing repetition frequency of a mode-locked laser based on genetic feedback, after a nonlinear frequency converter collects intracavity oscillation pulse in the mode-locked laser, frequency conversion is carried out to generate new wave band optical pulse, and the wavelength of the new wave band optical pulse does not fall in a gain interval of the mode-locked laser; the new wave band optical pulse passes through the optical delayer and then is injected back into the oscillation cavity of the mode-locked laser as an optical feedback pulse, the optical feedback pulse and the oscillation pulse in the current cavity capture each other and are synchronous in time, and the repetition frequency of the subsequent pulse is corrected by the preorder pulse of the mode-locked laser in an optical feedback injection mode. The repetition frequency stabilization is realized through an all-optical method, the use of an electronic feedback system is avoided, and the structure of a repetition frequency stabilization system is simplified; compared with links of detection, reference, filtering, comparison, amplification and the like of an electronic system, the optical feedback scheme is shorter in feedback time, higher in bandwidth and better in integration level; no heat is accumulated on the whole, and power consumption of a feedback system is zero.

The application provides a pressure primary metering system and an optical pressure gauge, and relates to the technical field of pressure gauges. The system comprises a vacuum sealed cavity, a laser output module, a double-channel resonant cavity and a processing module. The double-channel resonant cavity is located in the vacuum sealed cavity and comprises a vacuum reference resonant cavity and an open measurement resonant cavity formed based on the same substrate, so that the cavity deformation of the two can offset each other. The reference resonant cavity forms a first transmitted light signal based on a first laser beam, and the measurement resonant cavity forms a second transmitted light signal based on a second laser beam. The processing module comprises a frequency shift unit and a processing unit. The frequency shift unit shifts the frequency of the second laser beam before and after the vacuum sealed cavity is filled with gas, respectively, and transmits the second laser beam to the measurement resonant cavity. The processing unit obtains the frequency of the second laser beam based on the second transmitted light signal, and obtains the internal pressure of the vacuum sealed cavity based on the frequency difference between the first laser beam and the second laser beam, thereby avoiding the introduction of a complex frequency-locked optical path and an electronic feedback control system.