38results about How to "Work fast" patented technology

Techniques for tracking residual frequency error and phase noise in OFDM systems are provided. At the receiver, each received OFDM symbol is transformed using an FFT to obtain a received modulation symbol, which is serialized. A phase locked loop operates on the serialized receive modulation symbols and provides an independent phase correction value for each receive modulation symbol. Each received modulation symbol is corrected with its own phase correction value to obtain a phase corrected symbol. The phase error in each phase correction symbol is detected to obtain a phase error estimate for that phase correction symbol. The phase error estimate for each phase correction symbol is filtered (eg, with a second order loop filter) to obtain a frequency error estimate, which is accumulated to obtain a phase correction value for another received modulation symbol. Since independent phase correction values ​​are used for the received modulation symbols, the phase correction symbols are not correlated.

The invention discloses a recyclable textile machinery winding cylinder which comprises a winding cylinder body. A rotating shaft is arranged in the winding cylinder body, and a plurality of springs are fixedly arranged on the rotating shaft. A baffle ring is arranged at one end of the winding cylinder body, and a first end cover is arranged on one side of the baffle ring. The rotating shaft is rotatably connected with a motor shaft of a driving motor through a coupling. The other end of the winding cylinder body is movably connected with a movable ring, and a second end cover is arranged on one side of the movable ring. Antistatic layers are arranged on the inner sides of the baffle ring and the movable ring correspondingly, a T-shaped block is fixedly arranged on the inner side of the movable ring, a magnetic layer is fixedly arranged on one side of the bottom of the T-shaped block, and a long-strip-shaped sliding groove is formed in the winding cylinder body. The movable ring and the baffle ring are arranged; through scale lines on the outer side of the winding cylinder body and moving of the movable ring, the using position of the winding cylinder body is adjusted; the baffle ring prevents a spinning thread from being deflected, and winding regularity is guaranteed; and the winding cylinder is simple structure, regular in winding, high in work rate, and capable of being recycled.

The invention discloses an efficient pipe cutting machine for machining. The efficient pipe cutting machine comprises a driver, a rotating shaft, a casing, a line box, a moving pulley and a protection cover, wherein the driver is connected with a rotator, a driving motor is installed on the rotator, a top plate is fixed below the driving motor, a workbench is arranged on the right side of the driving motor, the casing is connected with the top plate, a processor is fixed below the rotator, a regulator is installed on the right side of the line box, an operating panel is fixed to the outer side of the casing, an operating handle is installed on a cutting disc, and the moving pulley is connected with the casing. The efficient pipe cutting machine for machining has the advantages of small size and high working efficiency and working speed and is provided with the protection cover, so that the safety of operating personnel can be preferably guaranteed; the cutting disc is made of good materials and is difficult to wear and damage, so that a pipe can be preferably cut, and the production development rate is increased.

The invention discloses a compound insecticide containing emamectin benzoate and diafenthiuron. The weight of the emamectin benzoate and the diafenthiuron accounts for 10-55wt% of the total weight, and a weight ratio of the emamectin benzoate to the diafenthiuron is (0.5-5) to (10-50). The compound insecticide disclosed by the invention is simple in production process and safe to use, cannot cause pollution to the environment, is low in toxicity and high in efficiency, also cannot cause harms to beneficial insects in use, can be used for expanding insecticidal spectrums, and can be used for significantly improving the fast-acting performance of medicines by virtue of the compounding of two medicaments, namely the emamectin benzoate and the diafenthiuron.