37results about How to "Convenient online control" patented technology

The present invention is a switched reluctance motor torque control method and system with current nonlinear compensation, the method uses the electromagnetic torque mathematical expression of the switched reluctance motor linear inductance model to calculate the basic control current, and uses the optimal torque distribution function The set torque is allocated as the distribution torque of the on-phase and off-phase, and the basic control current of each phase is obtained by conversion; the nonlinear current compensation value of each phase is superimposed with the basic control current of each phase as the control current of each phase, and The deviation of the measured current controls the current hysteresis controller. The microprocessor of this system is connected with three current sensors and rotor position angle and torque sensors on the switched reluctance motor, and its program memory is equipped with a data acquisition module and each calculation module of the method, and the control signal is calculated according to each measured signal, The three-phase input current of the switched reluctance motor is controlled by a pulse width modulator. The invention effectively suppresses the torque ripple of the switched reluctance motor, can constitute an embedded system, and is convenient for on-line control.

The invention discloses a polymerization process condition optimization method taking polyolefin microscopic quality as a target, belonging to the field of manufacture of chemical products. The polymerization process condition optimization method is characterized by building a process mathematic model based on reaction mechanism for an olefin polymerization process, and solving an optimal polymerization process condition which meets requirements on quality of specific products by taking average molecular weight or molecular weight distribution as an index of the microscopic quality of the polyolefin. The polymerization process condition optimization method can be used for calculating to obtain the optimal process operation condition under the condition with the given average molecular weight and molecular weight distribution of the polymers; the method can be applied to the design of structures of polymer products and can be used for shortening time for developing a novel type polymer, so that energy conservation and emission reduction are implemented; the economic benefit is increased; the polymerization process condition optimization method is simple and clear in principle and easy to understand and implement; the implementation of computer programming is facilitated; the on-line control of the quality of the polymer products is facilitated.

The invention discloses an industrial intelligent control system, which relates to the field of industrial automatic control technologies. The industrial intelligent control system comprises an industry network, an industrial server, a PLC main station, an I / O substation, a power distribution cabinet, a power distribution room industrial switch and an intelligent terminal, wherein the industrial server is connected with the industry network, the power distribution room industrial switch is connected with the industry network, the intelligent terminal is connected with the power distribution room industrial switch, the PLC main station is connected with the industry network, the I / O substation is connected with the PLC main station, and the power distribution cabinet is connected with the I / O substation. According to the industrial intelligent control system, the webmaster (gateway) intelligent control terminal is used for replacing the traditional field button control box to achieve functions such as seamless switching and system scram of a centralized (interlocking) control method and an on-site (unlocking) control method in a networking state and complete the control of equipment and integrated sharing informatization, and the disclosed novel mode enables the field personnel to control and master operation state of the equipment online more conveniently, rapidly and detailedly.

The invention discloses an online monitoring method for the electrolytic grinding process. The online monitoring method for the electrolytic grinding process comprises the steps that 1, electrolyte is obtained and diluted; 2, particles in the diluted electrolyte are analyzed; 3, particle features obtained through analysis are reasonably selected through a feature fusion technology, so that reasonable feature indexes are obtained for identifying the types of the particles; 4, based on fuzzy C-means and the support vector data description theory, an electrolytic grinding process evaluating model is established, and the electrolytic grinding process is monitored according to the mapping relationship between the types of the particles and the electrolytic grinding process. By the adoption of the online monitoring method for the electrolytic grinding process, the ratio parameter between the mechanical removal amount and the electrochemical removal amount in the electrolytic grinding process can be obtained, the purpose of monitoring the electrolytic grinding process on line can be achieved so that the electrolytic grinding process can be controlled on line, and therefore the online monitoring method for electrolytic grinding precision is effectively improved.

The invention discloses a superheated steam temperature rapid energy-saving predictive control method. The method obtains the controlled object predictive control model through the step test of the superheated steam temperature object. Control quantity sequence and superheated steam temperature measurement value sequence, the control system obtains the current desuperheating spray valve opening degree through simple calculation according to the new performance index proposed by this patent. This control method solves the problem of complex optimization problems in traditional limited predictive control, large amount of calculation, and lack of effective control parameters to adjust the system control performance. It can make the superheated steam temperature control stable and fast, and the process dynamic deviation is small. And there is no steady-state deviation. While ensuring the quality of control, the method can also reduce the amount of cooling spray water in the control process and improve the economical efficiency of unit operation.

The invention discloses an online detection system for single-capped electrodeless fluorescent lamps, which is characterized in that a test area of a light source aging operating device is provided with a positioning device, and when a detected light source moves to a position at which the positioning device is arranged, the positioning device emits positioning signals; the online detection system is provided with an online testing system for responding to the positioning signals emitted by the positioning device, and a data processing system; in the test area of the light source aging operating device, the online testing system carries out signal acquisition on the detected light source so as to obtain an acquisition signal, and the data processing system carries out data conversion and processing on the acquisition signal; and the data processing system provides an online test control signal. According to the invention, an online test is performed in the aging link of a single-capped electrodeless fluorescent lamp so as to obtain the performance parameters and matching effects of products in real time, thereby facilitating the quality management and control on products.

A method of applying ultrasonic wave energy to accelerated sedimentation of suspended matter. The scheme is to direct the sounding surface of the ultrasonic electro-acoustic transducer to the water surface and fix it in a closed container forming a plate structure outside, and link several vibration plates with mechanical locks that are easy to disassemble in the sedimentation area. The electroacoustic transducers inside the vibrating plate are arranged in rows and columns, and the wiring is connected in parallel, so that the electroacoustic transducers arranged in different odd and even numbers can be used to control or reverse the sound of different or the same frequency according to the characteristics of suspended solids in the water. Ultrasound; in order to effectively absorb ultrasonic energy, the bottom layer of the sedimentation tank is made of asphalt mineral wool felt, followed by porous polyester foam, and the upper layer is made of polyester fiber. In order to reduce the interference of reflected waves, the bottom of the pool can be set as a reflecting slope. Make the vertical downward wave form a certain angle with the reflected wave to prevent the interference of the reflected wave.

The invention discloses a double-stage double-body grain drying device, the technical gist of which is that the double-stage double-body grain drying device is mainly composed of a drying body, a damper body, a hoist and a hoist, and the drying body is A cuboid with an open top. A grain distributing trough is arranged at the upper end of the drying body, a grain discharging hopper is arranged at the lower end of the drying body, and 1 to 9 drying layers are arranged between the grain distributing trough and the grain discharging hopper; the slowing body is a cylinder. The upper cone is set on the upper end of the bradycere). The lower end of the bradysum body is provided with a lower cone). Between the upper cone and the lower cone, 1 to 9 ventilation layers are set, and between the 2 ventilation layers, a slow soot layer B is set. The beneficial effect of the present invention is: it is beneficial to the drying section process and slow soot cooling The adjustment and online control of the section process. The grain can achieve the functions of slow drying and slow cooling, which can adjust the ratio of grain drying to slow cooling, which is beneficial to the advantages of grain variable temperature drying technology. Make the grain achieve the goal of slow recovery and slow cooling, and improve the quality of the grain.