31results about How to "Specification quality" patented technology

A method for providing a specification about an efficiency of a cooler for recirculated exhaust gas in an internal combustion engine includes: measuring a temperature of the recirculated exhaust gas cooled by the cooler; and ascertaining the specification about the efficiency of the cooler as a function of the measured temperature of the cooled recirculated exhaust gas. With the aid of the specification about the efficiency of the cooler it is possible to determine a failure of the cooler or to calculate a temperature of the recirculated exhaust gas in order implement an engine control system of the internal combustion engine on the basis of a reliable temperature specification that is not influenced by lag effects.

A spread spectrum signal receiver includes a radio signal processing unit, which is at least partly implemented in software running on a processor. The processing unit is adapted to estimate a respective processing demand required to produce position / time related data based on each subset of a number of candidate subsets of signal sources among a group of potential signal sources. Each candidate subset contains at least a minimum number of signal sources, which is necessary to produce the position / time related data of a desired quality. The processing unit is adapted to select a set of preferred signal sources from the group of potential signal sources based on a candidate subset, which is associated with a lowest estimated processing demand during a subsequent receiver operating period. Then, the receiver receives spread spectrum signals from the selected set of signal sources, and based on the received signals produces position / time related data.

A fiber processing system including a refiner configured to process fibrous matter. The system further includes a plurality of measurement units coupled to the refiner to measure different operating conditions of the refiner, and a first control system coupled to the plurality of measurement units and configured to receive a plurality of operation conditions of the refiner from the plurality of measurement units. A processing unit is coupled to the control system and configured to estimate a production disturbance and a feed consistency disturbance of the refiner based on the plurality of operation conditions. The system also includes a second control system coupled to the processing unit and configured to generate a target operating condition based on the production disturbance and the feed consistency disturbance. The first control system is further configured to control an operation of the refiner based on the target operating condition.

The invention discloses a roadway full-fracture-surface anchoring-rod and anchoring-rope integrated parallel installation method and device. Full-fracture-surface parallel installation between anchoring rods and anchoring ropes, between the anchoring rods and between the anchoring ropes in a roadway is achieved, and the roadway supporting problem which limits the roadway tunneling speed is solved. The roadway full-fracture-surface anchoring-rod and anchoring-rope integrated parallel installation method is characterized by including the steps that according to the specific positions of the anchoring rods and the anchoring ropes in the roadway supporting design, one drilling machine is arranged corresponding to one anchoring rod and one anchoring rope, all the drilling machines are fixed on a movable frame, the movable frame is forwards moved after one anchoring distance is tunneled through a tunneling machine, it is achieved that all the anchoring-rod and anchoring-rope drilling machines of a full fracture surface of the roadway are in position at the same time and drilling is carried out at the same time, and the anchoring rods and the anchoring ropes are installed in parallel. The roadway full-fracture-surface anchoring-rod and anchoring-rope integrated parallel installation device comprises a fixing frame, joist jacks, the anchoring-rod and anchoring-rope drilling machines, a pulling moving device, a goods shelf, a scaffold ladder, a scaffold platform, a hydraulic concentration control console and the like, wherein the joist jacks are fixed to the two sides of the front end of the fixing frame, the anchoring-rod and anchoring-rope drilling machines are fixed on transverse beams or stand columns of the fixing frame, the pulling moving device is fixed to the front end of the fixing frame, the goods shelf is located in the middle of the fixing frame and used for containing anchoring-rod and anchoring-rope accessories, and the hydraulic concentration control console is installed on one side of the fixing frame.

A process and a plant for obtaining highly pure methane from biogas where biogas coming from a fermenter is compressed and fed to at least one membrane unit having a selectively permeable membrane, which provides a product gas stream containing an elevated proportion of methane and a gas stream containing a reduced proportion of methane. A quality sensor may be arranged in the outlet line for the highly pure product gas. A vacuum pump, the capacity of which can be regulated, may be connected to the low-pressure side of one of the membrane units. It is controlled by a control unit which receives its input signal from the quality sensor in the outlet line, and if the proportion of methane measured by the quality sensor falls below a certain value, the capacity of the vacuum pump is regulated so that the pressure difference at the membrane increases.

The invention provides a coal blending method for stabilizing quality of coke. A coal rock analysis method and a traditional coal blending method are tightly combined, a small coke oven autonomous coal blending coking experiment is assisted, detailed comparison is carried out for all determined data, in order to obtain a reasonable coal blending pre-arranged planning, and a finally determined coalblending pre-arranged planning can be applied to large industrial production and applications. Compared with the prior art, the method has the beneficial effects that: 1. a coal blending scheme is formulated by using the method, coking coal resources are reasonably utilized, a coal blending structure is optimized, and coal blending cost can be effectively reduced; 2. generation of coke quality fluctuation case due to an inappropriate coal blending proportion is avoided, coal blending accuracy degree can be effectively supervised, and stable coke quality is ensured; 3. coal blending process and coal blending quality supervise are more scientific and standard, and operability is better.

Provided are methods and systems for continuously producing low concentrations of chlorine dioxide from dilute solutions of sodium chlorite. The low concentrations of chlorine dioxide produced allow for reduced exposure risk with direct application of the chlorine dioxide stream. The incorporation of a suitable chlorine dioxide detector permits continuous monitoring and control of chlorine dioxide production ensuring that the process stays within regulatory guidelines. Pretreatment of reaction water is preferred for achieving suitable conversion rates of the low concentrations of chlorite to chlorine dioxide.