35results about How to "High cost of improvement" patented technology

A capacitance estimation method is applied to a three-phase converter. The three-phase converter comprises a three-phase converter and a processor. The processer is employed to execute the following steps of: (a) outputting non-fundamental signals to a three-phase converter to allow a bus voltage of the three-phase converter to generate non-fundamental fluctuation; (b) obtaining the bus voltage ofthe three-phase converter; (c) according to the bus voltage, a bus capacitance estimation value, an input power and an output power of the three-phase converter, obtaining a bus voltage estimation value; (d) allowing the bus voltage and the bus voltage estimation value to be subjected to a filtering link to output a first alternating current component and a second alternating current component corresponding to the non-fundamental fluctuation; and (e) according to the first alternating current component, the second alternating current component and a bus capacitance initial value, estimating abus capacitance value.

The invention discloses an image recognition method. The image recognition method comprises the following step that multiple images are acquired; all the images are analyzed, so that a target object is obtained; the target object is analyzed, so that color information and characteristic information are obtained; statistics is conducted on the current image according to the color information and the characteristic information, so that a probability distribution diagram is obtained; the difference between the current image and the prior image is obtained by comparing the current image with the prior image, so that dynamic information is obtained; intersection is conducted between the probability distribution diagram and the dynamic information, so that the target object is recognized. In addition, the invention discloses an image recognition system.

The invention relates to a construction composite wall building block which comprises a composite layer and a core layer arranged in the composite layer, wherein a protective layer and a solar slab are orderly arranged on outer side of the composite layer, a cellular hollow cavity is arranged in the core layer, the left side end surface and the upper side end surface of the wall building block are provided with building block bulges, and the right side end surface and the lower side end surface are provided with building block grooves matched with the building block bulges; the construction composite wall building block has the advantages of being light in weight, high in utilization rate, good in sound insulation, water resistance and thermal insulation and heat preservation performances, high in construction efficiency, good in decorative finishing performance, low in cost, good in environment protection performance and energy conservation, good in fire resistance and good in bearing capacity, and capable of satisfying the demands of actual construction technology efficiency and high comprehensive performance of building.

The invention relates to a building material railway transportation device adaptive to a rock heap side slope and a use method. The building material railway transportation device consists of three parts, i.e., a winch operation device, a feeding rail device and a feeding trolley; a controller in the winch operation device enables a motor and a gearbox to drive a winch roller to rotate at a certain speed, a traction rope is driven to move, and the traction rope drives the feeding trolley to move on the feeding rail device; the feeding rail device mainly comprises five parts, i.e., a rail, a sleeper, a sleeve, a supporting rod piece and a fixed pulley; hydraulic type telescopic legs are adopted as legs of the feeding trolley, and a reverse-preventing straight-moving wheel is adopted for each front leg. The building material railway transportation device can be used to overcome the defects of an existing rail device that the construction cost is high, the flatness requirement is high, building materials in a transporting trolley easily spill out, a traction rope is suddenly broken to make the trolley slip downwards, and the like, has the characteristics that detachment and operation are convenient, the construction cost is low, the practicability is high, the traction rope is prevented from being suddenly broken to make the trolley slip downwards, and the like, and is applicable to building material railway transportation on the rock heap side slope.

The invention provides a load reducing and efficiency improving method for a rod pumping well. The load reducing and efficiency improving method for the rod pumping well comprises the steps that multiple component elements influencing a polished rod load of the rod pumping well are analyzed, so that the degree of influence of the component elements on the polished rod load is determined; and the corresponding component elements are optimized according to the degree of influence of the component elements on the polished rod load, so that the polished rod load is reduced. By the adoption of the technical scheme, the multiple component elements influencing the polished rod load of the rod pumping well are analyzed to determine the degree of influence of the component elements on the polished rod load, and the corresponding component elements are optimized according to the degree of influence of the component elements on the polished rod load to reduce the polished rod load, so that the polished rod load is effectively reduced, and the problem that the cost is high when a low-permeability reservoir is exploited is solved easily.