20results 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 present invention relates to the field of satellite communication technology, and specifically discloses a mobile satellite communication handheld terminal antenna, comprising a vertical directional rotation mechanism, a horizontal rotation locking mechanism and a directional receiving rotation mechanism, wherein the vertical directional rotation mechanism is composed of a gripping handle assembly, a vertical rotation support assembly and a vertical directional rotation drive assembly, the horizontal rotation locking mechanism is composed of a horizontal rotation positioning locking assembly of a horizontal rotation support assembly, and the directional receiving rotation mechanism is composed of a top directional rotation drive assembly and a signal transceiver assembly; in the present invention, the following adjustments can be completed through a control panel: adjusting the orientation angle of the signal transceiver assembly relative to the vertical rotation support assembly; adjusting the rotation orientation and rotation speed of the signal transceiver assembly relative to the top directional rotation drive assembly; adjusting the relative rotation angle between a horizontal fixed support seat and a horizontal rotation support seat, and completing the extension of the signal transceiver assembly and the arm span at the upper end of the horizontal rotation support assembly.

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 present invention relates to a quick-change fixture capable of indexable positioning, which belongs to a fixture used for processing a main cylinder of an automobile brake. A front vertical plate and a rear vertical plate are installed on the fixture bottom plate, four hydraulic cylinders are installed on the rear vertical plate, four flanges are installed on the front vertical plate respectively, four cylinders are installed behind the front vertical plate, and there are rear row fixing holes and front row fixing holes on the circumference of the positioning pin fixing plate. The precision positioning pin is installed in the precision positioning pin hole of the front vertical plate, and the fixing pin passes through the through hole at the end of the precision positioning pin. The threaded end of the push-pull rod is connected to the cylinder, and at the same time, the tensioning plate is ensured to be in a horizontal state. The replaceable positioning sleeve is installed in the inner hole of the flange, and the positioning sleeve convex ring of the positioning sleeve is clamped on the plane of the flange. The advantages are novel structure, quick replacement of the universal positioning sleeve can adapt to the use of products of different specifications, accurate and reliable positioning, simple and convenient replacement, short adjustment time, and reduced manufacturing cost.

The present application belongs to the technical field of aero-engines, and particularly relates to a variable geometry combustion chamber with an adjustable two-stage vortex finder, which can automatically adjust the outlet geometric areas of the middle and outer two-stage swirlers according to the incoming flow temperature, so as to realize the automatic adjustment of the air intake amount at the flame tube head, and realize the variable air intake geometry of the combustion chamber through an adaptive air intake device, so as to ensure the ignition start and combustion stability, and control the combustion temperature in the typical working state, so as to realize low pollution emission. The air intake device mainly comprises an SMA spring with temperature-varying elastic force and a bias spring, which jointly push the cooling structure to change the outlet size of the swirler, and realizes the function of automatically adjusting the air intake geometry of the combustion chamber and adjusting the air intake amount at the head by adapting to the air intake temperature. Compared with the fixed geometry combustion chamber of staged combustion and the variable geometry combustion chamber of active adjustment, the combustion chamber has a simple structure, light weight, low cost and high reliability.

The present invention discloses a large-scale, high-rigidity, quickly adjustable assembly device, comprising a frame mechanism, a plurality of connecting rod mechanisms, a plurality of adjusting mechanisms and a plurality of splitting and combining mechanisms, each of the connecting rod mechanisms comprising a rotating shaft, the rotating shaft being rotatably arranged on the frame mechanism, the plurality of adjusting mechanisms and the splitting and combining mechanisms being respectively distributed along the length direction of the corresponding rotating shaft, the plurality of splitting and combining mechanisms being arranged one-to-one with the plurality of adjusting mechanisms, each of the adjusting mechanisms having two states of coupling and separation with the corresponding rotating shaft, the splitting and combining mechanisms being used for switching between the coupling and separation states, and the plurality of splitting and combining mechanisms on each rotating shaft operating synchronously; the present invention has a simple structure and high rigidity, the deformation of the opening of the frame mechanism during the hoisting process is small, and has no influence on the performance of the antenna cover, in addition, the use of the adjusting mechanism, the connecting rod mechanism and the splitting and combining mechanism enables the plurality of pressing blocks to work as a whole and individually, the adjustment time of the entire process is short, and the assembly efficiency of the antenna cover is improved.

The present invention provides a balancing adjustment device and an oil pump. The balancing adjustment device includes: a connecting piece and a plurality of balancing blocks; a connecting head is provided at the upper end of the connecting piece for fixed connection with a transmission piece; a plurality of balancing blocks are snap-connected together in sequence from top to bottom, and the balancing block at the uppermost end is also snap-connected together with the lower end of the connecting piece. The balancing adjustment device and the oil pump of the present invention are snap-connected together with the balancing block at the uppermost end through the lower end of the connecting piece, and the plurality of balancing blocks are snap-connected together in sequence from top to bottom. The snap-connection realizes rapid adjustment of the balancing blocks, with short adjustment time and high efficiency, thus solving the technical problems of high labor intensity, long adjustment time and low efficiency for on-site workers in carrying balancing blocks. In addition, the balancing adjustment device can also be transported as a whole package with the oil pump to reduce transportation costs.

The invention provides a four-switch Buck-Boost converter state track control and finite-state machine implementation method, which is characterized in that a drain electrode of a first switch tube s1 is connected to an input voltage Vin positive electrode of a converter, a source electrode of the first switch tube s1 is connected to a drain electrode of a second switch tube s2 and one end of an energy storage inductor L respectively, and the other end of the energy storage inductor L is connected to the other end of the energy storage inductor L; the source electrode of the second switch tube s2 is connected to the negative electrode of the input voltage Vin, the source electrode of the fourth switch tube s4, the negative electrode of the output capacitor C and one end of the load R, the drain electrode of the third switch tube is connected to the other end of the output capacitor and the other end of the load R, and the source electrode of the third switch tube is connected to the drain electrode of the fourth switch tube s4 and the other end of the energy storage inductor L. According to the invention, the state plane of the four-switch Buck-Boost converter is established, the natural trajectory of the four-switch Buck-Boost converter is deduced, and the rapid dynamic response of the converter is optimized by using the state trajectory control method, so that the dynamic and steady-state performance of the output voltage is greatly improved.

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.

The invention discloses an orbital transfer device of an orbital robot, an orbital transfer track and an orbital transfer and control method thereof, and relates to the field of orbital transfer devices.The orbital transfer device comprises an orbital transfer frame, an orbital transfer driving device and an orbital transfer controller, the orbital transfer driving device and the orbital transfer controller are fixed to a fixing plate, and the fixing plate can be fixed to the orbital transfer frame; the orbital transfer frame is connected with the output end of the orbital transfer driving device, so that the orbital transfer driving device can drive the orbital transfer frame to rotate; a plurality of laser sensors used for sensing the inspection robot are arranged on the track transfer frame, the laser sensors are in signal connection with the signal input end of the track transfer controller, and the signal output end of the track transfer controller is connected with the track transfer driving device. The orbital transfer track is provided with an orbital transfer device. According to the invention, the accuracy and precision of the rail transfer butt joint position and the safety during rail transfer can be ensured.

The utility model relates to the technical field of hoisting of building equipment, in particular to a hoisting device for high-rise building equipment. The high-rise building equipment hoisting device comprises I-shaped steel and two sets of locking assemblies arranged on the two sides of the bottom of the I-shaped steel. Wherein the locking assembly comprises an arc-shaped plate, an arc-shaped cavity is formed in the arc-shaped plate, and a bandage is fixedly embedded in one end of the arc-shaped plate; and an open frame is fixedly installed at the top of the arc-shaped plate, the open frame is arranged on a lower wing plate of the I-shaped steel in a sleeving mode and connected with the lower wing plate in a sliding mode, and fastening screws in threaded connection are inserted into threaded through holes formed in the plate walls of the two sides of the open frame. According to the hoisting device for the high-rise building equipment, the locking assembly arranged on the I-shaped steel can be used for quickly binding a pipeline and can be flexibly adjusted according to the specific length of the hoisted pipeline, and compared with a traditional mode that the pipeline is bound through a binding belt, the adjusting time is short, and the binding speed is high.

The utility model relates to a wet clutch spring and clamp spring assembly tool which comprises a positioning sleeve, a clamping spring, a clamping spring and a clamping spring. The welding pressing piece is used for installing the elastic check ring; the welding pressing piece is arranged on the positioning sleeve in a sliding manner; the connecting screw rod is used for connecting the positioning sleeve and the welding pressing piece in a sliding manner; the connecting screw rod sequentially penetrates through the welding pressing piece and the positioning sleeve; and when the welding pressing piece slides on the positioning sleeve, the connecting screw rod slides on the positioning sleeve along with the welding pressing piece. According to the wet clutch spring and snap spring assembly tool, manual assembly is replaced with a tool auxiliary assembly mode, potential safety hazards are reduced, and operation compliance is improved; the adjusting time in the assembling process is short, and the production efficiency is improved; the clutch spring is pressed down through the Y-axis axial movement of the press-fitting welding piece and the sleeve, the circlip for the shaft and the wet clutch are efficiently assembled, the machining requirement is effectively met, and the assembling accuracy is improved.

The invention belongs to the technical field of automobiles, and particularly relates to a damping mechanism and an automobile. A damping mechanism comprises a mounting frame, a damping spring, a damper and a posture adjusting assembly, the mounting frame is mounted on an external vehicle body, and the damper comprises an outer cylinder and a piston rod mounted in the outer cylinder; the damping spring is arranged on the outer cylinder in a sleeving mode and connected between the outer cylinder and the posture adjusting assembly in an abutting mode. The posture adjusting assembly is installed in the installation frame and can move in the axial direction of the shock absorber relative to the installation frame. The upper end of the piston rod is slidably installed on the posture adjusting assembly in the axial direction of the shock absorber. The posture adjusting assembly moves up and down on the mounting frame, so that the damping spring can drive the vehicle body to move up and down relative to the wheels, and then the high-low posture of the vehicle is adjusted. The device is simple and accurate to operate and short in adjustment time.

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.

A design method for a fractional-order PID controller comprises structural updating and parameter tuning of the fractional-order PID controller, and the steps are as follows: step 1: obtaining an optimal simplified Oustaloup filter; step 2: determining an adjustable coefficient in the optimal simplified Oustaloup filter; step 3: updating the structure of the fractional-order PID controller; step 4: obtaining a nonlinear dynamic chaotic particle swarm optimization algorithm; step 5: tuning the parameters of the fractional-order PID controller; step 6: obtaining a final fractional-order PID controller; the optimal simplified Oustaloup filter proposed by the present invention effectively improves the fitting accuracy of the fractional-order operator in the fractional-order PID controller; the nonlinear dynamic chaotic particle swarm optimization algorithm has a faster convergence speed and is not easy to fall into a local optimum, which effectively improves the iteration effect and can quickly tune the optimal fractional-order PID controller parameters; the fractional-order PID controller designed by the method provided by the present invention can enable the control system to have the advantages of short adjustment time, small steady-state error and small overshoot.

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.