5results about How to "Eliminate phase difference" patented technology

The application discloses a kind of test simulation equipment for simulating throwing anchor, dragging anchor in ship movement.The equipment includes water tank and track system, tow control system, anchor operating mechanism and data acquisition and processing system;Water tank and track system provide test water environment and the height of trailer (for simulating ship) from water surface, tow control system drives trailer to move along track, anchor operating mechanism controls anchor dropping position by receiving signal, realizes throwing anchor simulation, data acquisition and processing system monitors anchor chain stress in real time, captures anchor body into water and dragging process by high-speed camera, all data are integrated transmission to control computer by synchronizer, and after processing, output anchor dropping speed curve, anchor chain dragging force peak value and drag anchor trajectory and other parameters.The all test simulation elements of the application are controllable and known, easy to use, can play the role of improving the accuracy and test efficiency of ship throwing anchor, dragging anchor test simulation.

This invention belongs to the field of electronic technology and provides a built-in self-test circuit and method for high-speed interface IP intellectual property cores. The built-in self-test circuit includes: a pseudo-random binary sequence generator for generating corresponding code pattern data; a serializer for converting the code pattern data into serial data; a signal transceiver unit; a deserializer for deserializing the serial data to obtain deserialized data and an encoded clock signal; a synchronization module for performing delay compensation on the deserialized data according to the encoded clock signal and aligning the delay-compensated data with the pseudo-random binary sequence code pattern data to obtain aligned data pairs; and a comparator for performing logical decisions on the aligned data pairs to determine whether the built-in self-test of the high-speed interface IP is successful or failed. The built-in self-test circuit of this invention has a simple structure, does not occupy additional convex resources, and improves the self-test efficiency and accuracy of high-speed interface IP in BIST mode.

This invention discloses a flat-wire motor stator, including stator windings and a stator core. The stator core has multiple core slots circumferentially arranged. The stator windings include multi-phase windings, each phase winding including winding lines. Each winding line includes a branch, and each branch includes multiple main coil groups and auxiliary coil groups alternately connected in series on the circumferential core slots of the stator core. The main coil group includes multiple coils passing through two adjacent pairs of core slots and connected in series, wherein the coils in the middle layer span between adjacent layers, and the innermost and outermost coils are located in the same layer. The auxiliary coil group includes at least two coils passing through the same pair of core slots and connected in series, with the coil located in the middle layer and spanning between adjacent layers. A flat-wire motor, including a flat-wire motor stator, is also disclosed. A vehicle, including a flat-wire motor, is also disclosed. This flat-wire motor stator, flat-wire motor, and vehicle have advantages such as good symmetry, reduced losses, increased efficiency, and improved service life.

The application discloses a stator and a motor of an even-layer flat wire motor with a number of slots per pole per phase of 2, comprising a stator body and a stator winding; the stator is provided with six stator slots per pole, and two stator slots per phase per pole, the motor has a pole pair number p, p is an integer greater than or equal to 1, and each stator slot contains 2n layers; each phase winding contains a plurality of parallel branches, and the parallel branches are composed of an even number of winding units in series; the number of winding units of a single parallel branch * the number of parallel branches = 4p; the winding units are sequentially connected by first-layer positions and n kinds of cross-layer hairpins to the 2nth layer of the stator slot, each kind of cross-layer hairpin contains one, and the span of the same parallel branch between the adjacent two winding units in the same layer welding section of the first layer and the 2nth layer is 5 and 7, or 7 and 5. Based on the above structure, firstly, the induced electromotive force harmonic is weakened; secondly, the power line end and the center line end are concentrated, the busbar volume is small, the structure is simple, the end space is reduced, and the manufacturing cost can be reduced.

The application discloses a vibrating string sensor in-phase feedback excitation method and system, comprising the following steps: firstly, frequency measurement is performed on the sine wave signal to obtain the vibration frequency of the oscillation signal generated by the vibrating string sensor; then, a phase self-adaptive compensation algorithm is used to calculate the phase delay between the excitation signal and the oscillation signal of the vibrating string sensor caused by filtering and other reasons according to the measured vibration frequency; the sending time of the excitation signal in the next period can be determined according to the calculated phase delay; when the detection time reaches the sending time, a sine wave excitation signal with the same frequency and the same phase is generated according to the vibration frequency to excite the vibrating string sensor, so that the phase difference between the excitation signal and the sensor oscillation signal is eliminated; and the cycle is repeated, so that the oscillation amplitude of the vibrating string sensor in the detection process can be avoided from being weakened.