83results about How to "Guaranteed control quality" patented technology

The invention discloses a microminiature unmanned aerial vehicle longitudinal control method with random delay of a distributed network, and belongs to the field of flying control technology. The method includes firstly setting up an unmanned aerial vehicle longitudinal system model and designing a flying control system without network delay, secondly carrying out random robustness analysis and design on the flying control system on the condition of different network random delay, ensuring a gain scheduling strategy of the flying control system, and lastly carrying out closed-loop six-free-degree freedom nonlinear Monte-Carlo simulation verification. According to the control method, deterioration of quality of the flying control system due to network delay is relieved, and stability of the distributed type system can be strengthened. Through utilization of the random robust analysis and design method and the gain scheduling strategy based on linear interpolation, the obtained control has the advantages of being simple, and facilitating engineering realization. Control quality of an original system can be well maintained on the condition of changes of large network delay.

The invention discloses a method for achieving optimizing control of the load of a thermal power generating unit in a PROPR mode. The method specifically comprises: step one, an AGC load instruction value issued by a dispatching center is analyzed and optimized through a function; step two, the corrected AGC load instruction value and a unit actual power value are subjected to different and judgment to generate the steam turbine master control feed-forward amount; step three, the corrected AGC load instruction value and the unit actual power value are subjected to the different and judgment to perform load change rate switching. The method performs feed-forward optimizing adjustment on a steam turbine master control of the unit by analyzing the load instruction value and the actual power value of the unit and judging the load real-time change situation of the unit, performs broken line optimizing adjustment on the load change rate of the unit, accordingly improves the adjusting accuracy and a response time index effectively while adjusting the rate index of the unit in the PROPR mode, and ensures supply and demand balance of power grid load and the stability of power grid frequency.

The invention discloses a multi-target optimization prediction control method based on trapezoid interval soft constraint. The multi-target optimization prediction control method comprises a step1, establishing of a prediction model; step2, calculation of prediction out; step 3, feedback of correction; step 4, building of a trapezoid interval outside a tolerance interval; step 5, calculation of an optimization variable (img file+DDA0001238247080000011. Tif wi=70 he=47); step 6, building of a multi-target function; step 7, conversion of a multi-target problem into a single-target problem by using an omega-constraint method; step 8, acquisition of an optimal control increment by using a sequential quadratic programming algorithm. When the controlled variables exceed the tolerance interval, the controlled variables can enter the tolerance interval quickly to guarantee product quality. The building of the multi-target function is used to effectively prevent the mutual coupling among the various controlled variables, and the interval range of the constraint function is optimized by adopting an iterative algorithm, and then rapidity of operation of a system is guaranteed. By adopting combination of a set value control and a trapezoid interval soft constraint, the system can be operated at an ideal target value, and at the same time, the robustness and the freedom degree of the system area guaranteed to the greatest extent.

A fluorescence analysis reagent kit for detecting homocysteine in blood is disclosed. It uses a novel internal standard thiohydroxy acetic acid for quantity control and the chromatographic peaks of said internal standard and homocysteine can be clearly separated from each other. Its advantages are less specimen, high correctness, high speed, and low cost.

The invention discloses an intelligent drive control system. The intelligent drive control system is characterized by comprising a signal collecting module, a transmission module, an analysis module and a control module, wherein the signal collecting module is used for collecting signal tracks, is connected with the transmission module through a wired or wireless transmission mode and is used for sending data of the collected signal tracks, and the signal tracks refer to position tracks, which are obtained through a camera device and a sensor device, of a specific object nearby one or multiple signal receiving devices; the transmission module is used for connecting and transmitting various sensor signals and control signals; the analysis module is used for analyzing and processing the signal tracks provided by the signal collecting module and generating corresponding control signals; the control module is used for receiving the control signals generated by the analysis module and a manual control signal, and is used for carrying out real-time control on other devices of the intelligent drive control system through the transmission module. According to the intelligent drive control system disclosed by the invention, different tracks can be recognized into different control commands according to different track rules, the labor cost and the time cost which are needed for manual control are reduced, and the control quality is ensured at the same time.

The invention provides a temperature control system of a power curing oven. The temperature control system comprises a curing oven, a radiant heating unit, an oven temperature detection unit and an execution mechanism, an upper computer, a lower computer and a remote station, wherein the radiant heating unit, the oven temperature detection unit and the execution mechanism are arranged in the curing oven. The upper computer is connected with the lower computer by use of fast Ethernet. The lower computer is connected with the remote station and the radiant heating unit by use of a field bus, respectively. The temperature control system of the power curing oven has the advantages that a more humanized operating interface is convenient for a user to use and operate, the temperature rise rate of the curing oven can be adjusted by use of the HMI, the set values of the temperatures are automatically calculated by use of a model, the temperature control accuracy in the product forming process is high, the product control quality is effectively guaranteed, and the control system is simple and high in degree of automation. The upper computer is capable of monitoring all the data and the working conditions in the field by use of configuration software, and convenient for monitoring and managing the product forming process. The temperature control system is capable of allowing the user to inquire about the historical forming data of each batch of products.

The invention discloses a high pressure liquid storage tank control-based high temperature heat pump system and a control method thereof. The whole high temperature heat pump system is divided into five main modules, namely an evaporator, a condenser, a compressor, a capillary pipe and a high pressure liquid storage tank. Operation in stable states of pressure of the evaporator, pressure of the condenser and the mass flow of the capillary pipe is realized by main measures of guaranteeing the condensing pressure of the condenser and carrying out feedforward control on industrial wastewater transmission temperature by a high pressure liquid storage tank energy storage control method. According to the high pressure liquid storage tank control-based high temperature heat pump system, by construction of an inner loop control method of the high pressure liquid storage tank for controlling pressure at a condenser outlet and carrying out feedforward control on a high temperature heat source side, coordinative control over the system can be quickly realized under a condition of the frequency of the compressor, so that the dynamic adjustment quality of the evaporator and the condenser are improved; meanwhile, by the adoption of the high temperature heat pump system with the high pressure liquid storage tank, normal operation of the compressor can be guaranteed, and the heat exchange effect of the condenser is enhanced; and an efficient circulating refrigerant guarantees efficient, stable and safe operation of the system.

The invention discloses a connection structure and an installation method of a box-shaped steel column and an unequal-height I-shaped steel beam. The connection structure comprises the box-shaped steel column, a high-side I-shaped steel, a low-side I-shaped steel, a horizontal top plate, a triangular plate, a second beam end plate, a second U-shaped steel, a angle steel, a first bolt, a second bolt, a first beam end plate and a first U-shaped steel. The connection joint of the box-shaped steel column and the unequal-height I-shaped steel beam can not only give full play to the advantages of the combined structure but also meet the requirements of aesthetics and functions, and can also improve the construction speed; moreover, the joint has larger ductility and deformation capacity, the construction quality and safety are guaranteed, the connection joint of the box-shaped steel column and the unequal-height I-shaped steel beam can be widely applied to various building structures, and the development of the building industry is greatly promoted.

The invention relates to a method and device for high-precision closed-loop blood constituent real-time separation blood sampling. The method includes the steps that the blood drawn from the body of a blood donor is separated in real time, blood constituents which should be infused back are infused back to the body of the blood donor in a field, the required blood constituents are stored in a corresponding required blood constituent container, indexes of the blood constituents in the body of the blood donor are detected in real time in a non-invasive mode in the blood drawing process, blood sampling is stopped when the indexes of the blood constituents in the body of the blood donor are reduced below safety threshold values, the separated blood constituents are detected in real time so that the operation speed of a blood centrifugal machine can be controlled according to a detection result, and the optimal separation effect is achieved. The device for high-precision closed-loop blood constituent real-time separation blood sampling comprises a blood drawing unit, a blood separation unit, a storage unit, a back infusion unit, a constituent quality detection unit, a fluid infusion unit, a real-time physiological monitoring unit and a central processing unit. According to the method and device, on the premise that safety is guaranteed, the maximum blood donation volume can be accurately determined according to physical indexes of the blood donor, and the blood separation quality can be improved and guaranteed.

The invention relates to a coordination control method for an off-grid phosgene combined heat and power generation integrated energy system. An integrated energy system model with subsystems representing overall dynamic characteristics of the system is constructed through overall analysis of the system and serves a distributed model prediction control algorithm. A single-layer control structure based on direct energy balance is provided according to a user energy demand analysis system control target, and thermoelectric energy supply and demand real-time balance can be achieved without an upper layer optimization scheduling instruction. Furthermore, according to the characteristics of a coordination control object, cooperative distributed model predictive control is adopted to achieved thermoelectric coordination control. Through simulation verification, the control strategy provided by the invention can realize real-time balance of thermoelectric energy supply and demand under various disturbances, and the calculation burden is significantly reduced compared with a centralized model prediction control algorithm.

The invention relates to a material flow system, particularly, relates to the material flow system feeding crude tobaccos according to ratio in crude tobacco production. The material flow system comprises a material flow central control system 4, a crude tobacco boxing area 1, a high-rack warehouse storage area 2 and a box turnover feeding area 3, wherein, the crude tobacco boxing area comprises a boxing area 12 and an empty tank buffer area 13; the high-rack warehouse storage area comprises a warehouse-out platform 21 and a storage rack 22; and the box turnover feeding area comprises a material pouring buffering station 32 and a material feeding station 31. The material flow system converts extensive production of crude tobaccos to fine production, and achieves standardized operation of material flow and automatization management; compared with the traditional operation model, the material flow system can reduce the labor intensity, can improve the tobacco formula accuracy, and can ensure chemical composition constancy of finished tobaccos; and the material flow system can change the production organization, and can change the feeding production organized artificially into the grouping feeding production adopting automatic computer formulating.