7results about How to "Repeatable" patented technology

This invention relates to the field of demonstration teaching aids, and more particularly to a stepped drive device, comprising a fixed frame, a track assembly mounted on the fixed frame, a trolley mounted on the track assembly, and a sensing device and a speed detection device mounted on the outside of the track assembly; a support fixedly mounted below the fixed frame, and a stepped permanent magnet assembly and a magnetic field transition unit mounted on the inside of the support for driving the trolley to move along the track assembly; the stepped permanent magnet assembly includes a first gradient magnetic field and a second gradient magnetic field arranged sequentially along the direction of trolley movement, both of which are composed of multiple permanent magnets of the same specification, and in a single gradient magnetic field, the number of permanent magnets stacked along the direction perpendicular to the fixed frame increases in a stepped manner; the magnetic field transition unit includes a magnetically adjustable electromagnet disposed between the two gradient magnetic fields; and a speed detection device is mounted at the end of the track assembly, thereby realizing real-time monitoring and demonstration of the trolley's movement state in the stepped changing magnetic field.

This invention provides a method and system for testing the electromagnetic radiation immunity of components, relating to the field of electromagnetic immunity testing technology. The invention sets a range for the electromagnetic frequency and amplitude of the interference signal, generating multiple particles characterizing the interference signal within this range. Through iterative particle swarm analysis, it rapidly collects highly sensitive sample points that cause functional abnormalities in components during electromagnetic interference testing. By clustering these highly sensitive samples, it locates the electromagnetic interference sensitive range of the target component. Compared to full-band scanning and fixed-point scanning methods for electromagnetic interference testing, this invention enables automated and quantitative extraction of the electromagnetic sensitivity range, reducing subjective bias from manual location and improving analytical consistency and repeatability. Furthermore, by focusing on highly sensitive frequency bands and field strength ranges, it optimizes the test path, reduces redundant scanning points, and significantly improves the efficiency of electromagnetic interference testing.

This invention relates to a method for real-time online detection of wastewater indicators. Before detection, a low-concentration water body is injected into the detection chamber to perform micro-dose detection. By observing whether there is a nonlinear shift in the initial response behavior, it is determined whether there is residual response on the inner wall of the detection chamber. If so, a local delayed detection and pre-rinsing operation is performed to suppress interference responses caused by the chemical memory of the detection chamber. After completing the pre-response suppression, a slow-varying physical stimulus process is applied to the wastewater to be tested, stimulating the release of masked pollutants in the wastewater. The pollutant response signals are continuously tracked, and fluctuating behavior is identified. Based on the changing trend of the response curve, a stable response interval is identified as the sampling point for final detection. For cases with superimposed responses from multiple pollutants, the rise rate, fall rate, and tailing characteristics of the response profiles of each indicator are analyzed to identify the physical differences of multiple response signals and perform physical-level decoupling, improving the accuracy of identifying multiple pollutants.

This invention provides a rapid modeling method and terminal for variable cross-section leaf springs used in light trucks, relating to the field of light truck technology. The method involves calculating the geometric contours of each leaf spring in its extended state, selecting sample points at equal intervals along the length of each leaf spring in its extended state, and calculating the sample point data including coordinates and thickness. The method then calculates the geometric contours of each leaf spring in its free state. Based on the free state of each leaf spring, sample points are reselected, and corresponding sample point data is obtained through interpolation and exported. A leaf spring modeling file and an assembly parameter file are created. The sample point data of each leaf spring in its free state are imported into the leaf spring modeling file, and the leaf spring assembly parameters are imported into the assembly parameter file. The leaf spring toolbox is run to generate the leaf spring model, defining the leaf spring lugs and material properties to create the leaf spring model. This method uses a procedural approach, which can quickly and accurately calculate the sample point data of the variable cross-section leaf spring, improving the efficiency of leaf spring modeling and the accuracy of model creation.

This invention belongs to the field of mechanical structure technology, and specifically relates to a method for controlling the assembly angle of a coaxial counter-rotating dual rotor shaft for a helicopter. The method analyzes the structural characteristics of the two rotor shafts and adds angle control markings during the machining and inspection of the rotor shafts and rotor shaft torque transmission gears. During rotor shaft assembly, the assembly angle between the rotor shaft and the rotor shaft torque transmission gear is calculated based on the angle control markings. Then, the assembly position is marked again on the rotor shaft torque transmission gear to ensure that the angles of the two rotor shafts meet the requirements after assembly.

This utility model relates to the field of textile equipment technology, specifically to a rapid testing device for the tensile strength of elastic fabrics. The device includes a frame, a material guiding mechanism, and a loading mechanism. The material guiding mechanism comprises a first and a second set of guide rollers. The loading mechanism includes a loading rod and a linear drive. One end of the linear drive is connected to the frame, and the other end is hinged to the loading rod. A pressure sensor is mounted on the loading rod. Through this design, the linear drive, controlled by a program, can precisely execute pressure loading, pressure holding time control, and unloading actions, completely replacing manual bidirectional tensile testing. This thoroughly solves the problems of inconsistent testing speed and unstable pressure holding time, ensuring completely consistent testing conditions for each test.