4results about How to "Reduce error" patented technology

This invention discloses a radio frequency (RF) control method based on tuning response and harmonic optimization, relating to the field of RF technology. The method includes: Step S1: Generating an array configuration word in the target RF system using a multi-capacitor switching array; Step S2: Generating an initial RF signal by driving a switch state switch using the multi-capacitor switching array; Step S3: Iteratively calculating notch filter parameters using an iterative optimization method; Step S4: Configuring the iteratively generated optimal notch parameters to the notch filter to filter and correct the initial RF signal. Compared with existing technologies, this invention utilizes a multi-capacitor switching array to acquire RF signal spectral data, constructs an iterative optimization process, and combines iterative optimization of notch filter parameters with optimal notch parameter correction, thereby reducing the system's residual harmonic measurement value. It has the advantages of effectively reducing residual spurious power and maintaining high signal-to-noise ratio and low error performance, while reducing systemic interference.

The utility model relates to the technical field of maintenance cars, and discloses an intelligent maintenance trolley which comprises an equipment bottom plate, a driving assembly is connected to the lower surface of the equipment bottom plate in an inserted mode, and a containing box, a support, a gear and a tray are connected to the upper surface of the equipment bottom plate in an inserted mode. The device is reasonable in structure, the driving motor on the lower surface of the driving bottom plate drives the driving wheels to rotate so that the device can move forwards and backwards, the guide motor rotates so that the guide rods drive the guide wheels to rotate so that the device can steer, and the device can move and steer conveniently. And after a limiting rod is pulled out and a placing box is pulled out, tools needing to be used are placed in the placing box, the equipment is brought to a maintenance site, the tools are conveniently and rapidly transported to the maintenance site, the working efficiency is improved, and the labor intensity of workers is reduced. Therefore, the problems that a worker needs to hold various devices for maintenance, movement is inconvenient, and the body is hurt due to the fact that the worker holds tools for a long time are solved.

The utility model belongs to the field of precision machining, and particularly relates to a clamp for a test of grinding silicon carbide ceramics by porous diamond abrasive particles. The clamp is composed of a clamping part and an angle fine adjustment part, the clamping part comprises a clamping block, a positioning block and a compression bolt and is used for clamping a workpiece, and the angle fine adjustment part comprises a bench clamp seat, a limiting block, a chassis, a base, a locking handle, a horizontal angle needle, a vertical angle needle, a blocking cover and a limiting rod. The included angle of the silicon carbide ceramic workpiece relative to the grinding direction of the porous diamond abrasive particles can be changed, and then the cutting depth of the abrasive particles is changed. According to the device, the cutting depth of the abrasive particles can be accurately controlled, and effective help can be provided for self-sharpening research of the porous diamond abrasive particles.

The utility model discloses a brushless rotor core positioning tool which comprises a bottom plate, the upper end of the bottom plate is fixedly connected with a heightening plate, the upper end of the heightening plate is fixedly connected with a bearing plate, the upper surface of the bearing plate is provided with a clamping assembly, and the bearing plate is clamped with a rotor workpiece through the clamping assembly. Firstly, it is guaranteed that the tool is stable, all parts are firmly connected and rotate flexibly, a to-be-machined rotor iron core is roughly aligned with the center of a fixing rod and placed on a bearing plate, then an adjusting rod is rotated to drive a bidirectional threaded rod to rotate, a first sliding block and a second sliding block synchronously and reversely move, a main butt-joint inclined plate is pushed to drive a butt-joint piece to get close to and clamp a rotor workpiece, and the rotor iron core is machined. The number of rotation turns is controlled through scales of the adjusting rod to adapt to iron cores of different specifications, and high-precision positioning is achieved; machining operation is carried out after positioning and clamping are completed, and it is guaranteed that the iron core is stable and air gaps are uniform during machining; when the model of the iron core is replaced, the adjusting rod is reversely rotated to loosen and clamp, and the positioning and clamping steps are repeated after rapid replacement.