7results about How to "Short adjustment time" patented technology

The invention provides an anti-interference control method for the concentration of a main reactant in a continuous stirring reaction kettle process, belongs to the technical field of chemical process control, and solves the problem that in the chemical process of producing cyclopentanol by catalyzing electrophilic water with cyclopentadienoic acid, the concentration of the main reactant is not influenced. The technical problem that the concentration of a main reactant is difficult to track a set value without steady-state errors under the conditions of fluctuation of feeding concentration, uncertainty and external disturbance of the continuous stirring reaction kettle is solved. According to the technical scheme, the method comprises the steps of constructing a model pre-estimation compensator and an anti-interference control structure, designing a four-dimensional decision model, carrying out parameter collaborative optimization by adopting a multi-target genetic optimization algorithm, and carrying out optimal solution selection based on a TOPSIS method. Under the condition of feed concentration fluctuation, the dynamic response speed and the anti-interference capability of the system can be remarkably improved, and faster adjustment time, smaller overshoot and stronger robustness can be realized in linear and nonlinear models.

The utility model discloses a centerless grinding machine cut-in grinding fast adjusting support which comprises a fixing support, an installation block and an adjusting supporting assembly, the installation block is installed on the fixing support, the adjusting supporting assembly is installed on the installation block, and the adjusting supporting assembly comprises at least one set of adjusting supports. The adjusting supports are symmetrically arranged on the mounting block and can rotate relative to the mounting block. During adjustment, the adjusting support is rotated, then the position and the angle of the workpiece are adjusted, adjustment is more convenient and faster, the adjusting time is saved, meanwhile, the adjusting support has a stable bearing function, and the technical problems that in the prior art, the adjusting efficiency is low, and the grinding stability is poor are effectively solved.

The application provides a PI control system for realizing LCI driving synchronous motor load disturbance observation compensation, which is used on an LCI driving synchronous motor and comprises a double closed loop PI control structure for controlling the rotating speed of the LCI driving synchronous motor, and further comprises a Luenberger observer arranged on the double closed loop PI control structure; the Luenberger observer observes the load torque change of the LCI driving synchronous motor and feeds the observed value to the outer loop PI control of the double closed loop PI control structure; the double closed loop PI control structure feeds the outer loop according to the observed value to realize compensation control on the torque variable of the LCI driving synchronous motor, so that the LCI driving synchronous motor can adopt the discontinuous commutation mode at low speed or the load commutation mode at high speed to ensure the stable operation state; wherein the observed value is determined by the state quantity of the LCI driving synchronous motor, including the rotor position and the rotating speed. Through the compensation control, the application can improve the anti-step load disturbance capacity of the LCI driving synchronous motor during the operation process and ensure the operation state to be always in the best state.

The invention discloses an air pre-heater temperature control optimization method for thermal power generation, and belongs to the technical field of control optimization, and the method comprises the steps: constructing an air pre-heater inlet air temperature PID control system, obtaining an actual air temperature feedback value through an inlet air temperature monitoring module, and transmitting the actual air temperature feedback value to an inlet air temperature error calculation module; the inlet air temperature error calculation module receives the target temperature value and compares the target temperature with a feedback value so as to calculate and output a real-time error signal and transmit the real-time error signal to the inlet air temperature PID controller module, and the inlet air temperature PID controller module subjected to parameter optimization calculates a control quantity according to the real-time error signal; and the control quantity is output to the inlet air temperature adjusting module so as to adjust the inlet air temperature of the air pre-heater. The risk of corrosion and dust deposition of the low-temperature section of the air pre-heater can be effectively reduced, and the high use value is achieved for guaranteeing safe operation of a thermal power generation system and improving the fine operation level.

The invention discloses a liquid supply pressure regulating system which comprises a liquid supply part. One end of the liquid outlet pipeline is communicated with the liquid supply part, and the other end of the liquid outlet pipeline is a liquid outlet; the high-pressure pump is arranged on the liquid outlet pipeline so as to control the pressure of liquid in the liquid outlet pipeline; the pressure adjusting device is arranged on the liquid outlet pipeline in a communicating mode and arranged between the high-pressure pump and the liquid outlet, the pressure adjusting device is provided with an adjusting opening, and the adjusting opening is used for discharging liquid in the pressure adjusting device so as to adjust the pressure of the liquid; the control piece is arranged on the pressure adjusting device so as to control the opening degree of the adjusting opening. On the premise that the liquid outlet is closed, the pressure of the high-pressure chemical liquid in the liquid supply pressure regulating system can be automatically increased or decreased, when the valve needs to be opened for liquid outlet work, the pressure is adjusted, and the purpose of not influencing the productivity is achieved.

This invention discloses a programmable digital delay circuit, which consists of N basic modules connected in series. Each basic module includes a delay module and a 2-to-1 multiplexer. In each basic module, the input terminal of the delay module and one input port of the 2-to-1 multiplexer are connected to the input terminal of the current basic module to receive the input signal of the current basic module. The output terminal of the delay module is connected to the other input port of the 2-to-1 multiplexer. The control signal enable port of the 2-to-1 multiplexer is used to receive a control signal to select one input signal from multiple input signals. The output terminal of the 2-to-1 multiplexer outputs the selected input signal and uses it as the input signal of the next basic module. The delay circuit of this invention is composed entirely of pure digital logic, has high dynamic adjustment flexibility, and a wide delay adjustment range.

The application relates to the technical field of energy management, in particular to an electric dust removal intelligent energy management system, which comprises an acquisition module used for acquiring a historical data set in the running process of an electric dust removal system, wherein the historical data set comprises parameter adjustment values of a high-frequency power supply of an electric dust remover under different unit load fluctuations and first dust removal evaluation values; a division module used for dividing the parameter adjustment values and the corresponding dust removal evaluation values into normal data sets and abnormal data sets; a determination module used for establishing a minimum adjustment time target function and a maximum dust removal efficiency target function and determining optimal adjustment parameters based on the normal data sets and the abnormal data sets; and a construction module used for constructing an electric dust removal system management platform based on the optimal adjustment parameters. The application solves the technical problem that there is no effective basis for scientifically adjusting the parameters of the high-frequency power supply of the electric dust remover, the timeliness of operation and control cannot be achieved, and the dust removal effect of the equipment cannot be improved.