11 results about "Variable ratio" patented technology

The invention discloses a rotary transformer performance test method and system for an automobile motor, and relates to the technical field of motor performance test.The method comprises the steps that parameter configuration is conducted on a tested rotary transformer; the method comprises the following steps: connecting a rotary transformer with an automobile motor controller and a rotating speed encoder, controlling the tested rotary transformer to operate in a dynamic rotating speed sequence, synchronously acquiring output voltage, transformation ratio error, phase deviation and temperature drift data, and extracting harmonic distortion rate and dynamic response delay characteristics; constructing a performance evolution graph, and updating the excitation voltage and the initial working frequency of the primary winding; and determining a comparison result according to a performance test standard to obtain a performance test report. According to the invention, the technical problem that the performance test of the rotary transformer for the automobile motor is lack of comprehensiveness and accuracy in the prior art is solved, and the technical effects of realizing the system test of the performance of the rotary transformer for the automobile motor, generating the report and improving the comprehensiveness and accuracy of the performance test are achieved.

The application provides a creep test device for a steel ring reinforced shield tunnel lining interface, characterized in that the device comprises a support fixing mechanism, a constant ratio loading mechanism, a variable ratio loading mechanism and a test piece; the constant ratio loading mechanism and the variable ratio loading mechanism are arranged on the support fixing mechanism, the constant ratio loading mechanism and the variable ratio loading mechanism form a folded series two-stage lever mechanism, and the purpose of applying a load to the test piece is achieved by adjusting the counterweight and the length of the power arm on the variable ratio loading mechanism. The application also provides a combination device of the above device, and the creep test of the test piece under a pull-shear coupling condition can be realized by the combination of the two devices. The creep test of the steel ring reinforced shield tunnel lining interface by using the device has good load holding performance, can flexibly simulate complex pull-shear coupling conditions, and improves the test efficiency and reduces the test cost.

The utility model discloses a double servo variable ratio metering system relates to two-component glue delivery system technical field, including lower frame and metering cylinder, the upper surface of lower frame is provided with the upper frame, the output end of servo motor is connected with the screw rod cylinder, the one end of metering cylinder close to the support plate passes through the piston rod, and the piston rod is connected with the screw rod cylinder. And a screw rod shaft is arranged in the screw rod cylinder body. According to the double-servo variable-ratio metering system, in order to set that two-component glue is strictly output according to different proportions and meanwhile ensure that the glue is output in a precise quantity guaranteeing state, two independent movement mechanisms are adopted to execute and guarantee the whole operation system; two sets of servo motors drive a lead screw shaft to rotate, so that a piston rod does piston motion in two metering cylinder bodies, two sets of glue with different components flow from the interiors of the two metering cylinder bodies respectively, and the motion line spacing of the piston rod is accurately controlled by limiting the distance between a sliding block and the end faces of the metering cylinder bodies. Therefore, the output quantity of the two groups of glue is accurately controlled.

According to particular embodiments, a door operating system comprises: a rotating handle removably coupled to a first gear; the first gear coupled to a second gear; the second gear removably coupled to a worm gear; and the worm gear coupled to a rotating plate. Rotation of the handle rotates the first gear which rotates the second gear which rotates the worm gear which rotates the rotating plate to cause the door to open or close. The first gear is swappable with the second gear to modify a gear ratio of the door operating system.

The invention discloses a curved surface variable-ratio automatic extension method in a three-dimensional CAD environment, and the method comprises the steps: building a section bisector through writing a program based on the element selection and parameter input of a to-be-extended curved surface by a user, and building a tangent extension curve and a curvature extension curve of the section bisector at the same time through combining the advantages and disadvantages of the tangent extension and curvature extension of the curved surface; the variable-ratio extension curve is constructed between the tangent extension curve and the curvature extension curve according to different ratio values, curved surface variable-ratio automatic extension modeling is completed, the problems of poor curvature retentivity, insufficient curvature extension and curved surface distortion of original tangent extension are effectively solved, the design difficulty is reduced, and the design efficiency is improved. Standardized design of software and dominant expression of design experience are achieved, and a new thought is provided for multi-state rapid, efficient and automatic extension design of the curved surface in the three-dimensional CAD environment.

There is provided a winding assembly (16), and a pallet lid (1) comprising the winding assembly (16). The winding assembly (16) comprises a rotatable tensioner (37) configured to receive a tensioning

The utility model relates to mechanical seal technical field, and disclose variable ratio pressure's mechanical seal, including pivot and main static ring, the pivot outside fixed mounting has the shaft sleeve, the main static ring one side is provided with the driving ring, the shaft sleeve side fixed mounting has spring seat, the spring seat inside is provided with screw, spring no.

The utility model discloses a kind of multi-output continuously variable transmission mechanism, it is related to continuously variable transmission technical field, the multi-output continuously variable transmission mechanism includes total power source and multiple continuously variable transmission mechanisms, the input end of arbitrary continuously variable transmission mechanism is connected with total power source transmission, total power source can simultaneously drive the input end of multiple continuously variable transmission mechanisms.By setting a total power source and multiple continuously variable transmission mechanisms, arbitrary continuously variable transmission mechanism is connected with total power source transmission, so as to realize a input corresponding multiple independent control's variable ratio output, so as to expand the application scenario of continuously variable transmission mechanism.

The invention relates to a method for compensating a calibration error with an axle geometry table during a steering system position calibration of a steering system (10) by determining a rack position of a rack (20) with a variable ratio by comparing the initial steering angle adjusted by a correction value (26) with an axle geometry table stored in the steering system (10) taking into account a previously determined symmetry offset (28) of the rack (20).

This invention provides a method and system for detecting machining errors in variable ratio rack-and-gear sector pairs, relating to the field of transmission mechanism design. Addressing the difficulty of accurately detecting errors in variable ratio rack-and-gear sector pairs using existing methods, this invention constructs a comprehensive virtual sample library by acquiring dynamic characteristic data under multiple known errors and operating conditions. It utilizes a two-dimensional comprehensive weight index to reconstruct and optimize parameters, and establishes a nonlinear mapping model between error, operating condition, and response based on a neural network. High-fidelity simulation data fills the gap in scarce fault samples. Through the inverse calculation logic of the neural network model, the macroscopic operating conditions and response signals sensed by sensors can be decoupled into specific microscopic error types. This overcomes the nonlinear time-varying interference of variable ratio structures without the need for expensive destructive testing, achieving low-cost error detection of variable ratio rack-and-gear sector pairs.