345 results about "Speed control system" patented technology

The invention provides a color steel plate coating flatness evaluation method and system based on artificial intelligence. According to the method, the three-dimensional point cloud data is generated by collecting the interference fringe image, and the surface fluctuation characteristics are quantified; capturing a multi-dimensional vibration spectrum of the transmission roller shaft, generating a servo motor compensation control signal, driving a multispectral scanning head to perform reverse displacement compensation, and generating real-time compensation data; inputting the surface topography features in the three-dimensional point cloud and the real-time compensation data into a lightweight convolutional neural network, and outputting fusion features; and dynamically classifying and identifying surface defects and uneven areas based on the fusion result, adjusting a classification threshold in combination with the speed of the production line, outputting a flatness evaluation result, and synchronizing the flatness evaluation result to a speed regulation system of the production line to realize closed-loop optimization. According to the method, laser interference, vibration compensation and lightweight AI technologies are fused, dynamic high-precision evaluation of the surface flatness of the color steel plate of the high-speed production line is achieved, and the problems of defect misjudgment and measurement distortion caused by vibration interference are solved.

The invention relates to the technical field of intelligent transportation control, in particular to a tomato transportation speed self-adaptive adjustment method based on path road condition feedback, which comprises the following steps: acquiring road images, vibration waveforms and altitude data through a multi-source sensing unit, and constructing real-time road condition information; identifying a driving mode and extracting a corresponding bumping parameter; detecting the maturity grade of the tomato by combining multispectrum and thermal imaging, and querying a maturity-compressive strength corresponding table to calculate a cargo damage threshold value; constructing a dynamic mapping model under multiple working conditions, predicting vibration response and converting the vibration response into equivalent pressure; comparing the equivalent pressure with a damage threshold value to obtain a safety margin, constructing a speed adjustment decision tree and generating a maximum allowable speed value of each road section; and dynamically generating a segmented variable-speed control instruction based on the speed decision matrix, and controlling a throttle valve and a braking system to cooperatively change speed. The method has the advantages of accurate working condition identification, dynamic fruit adaptation, closed-loop speed regulation and control and the like, and is suitable for fine speed control of a high-sensitivity fruit and vegetable transportation scene.

The invention provides a dynamic cooperative speed regulation control system and method for a machine tool spindle and a feed shaft, and the method comprises the steps: building a spindle energy transmission model and a feed shaft load-motion model, and constructing a strong correlation coupling relation between the two through cutting power; collecting main shaft power, torque and rotating speed and feed shaft cutting force, acceleration and displacement data in real time, and fusing to generate a combined state vector; calculating spindle margin and time correction based on spindle actual power and torque, and identifying working condition abrupt change according to the joint state vector; the feeding speed and the cutting depth are dynamically adjusted with the spindle margin sum as the constraint condition, and a cooperative adjustment strategy is generated; and converting the cooperative adjustment strategy into a feed shaft motion instruction and executing the feed shaft motion instruction. By constructing a real-time coupling closed loop of'spindle power-torque-rotating speed 'and'feed shaft speed-acceleration-position', the spindle is always locked to operate in a maximum power-torque envelope efficient area, the speed of the feed shaft is dynamically adjusted according to the spindle margin, locked rotor is completely eradicated, and no-load is eliminated.

The invention discloses an automatic driving vehicle longitudinal speed control system and method based on a game theory, and the system comprises a self-vehicle game strategy module which is used for constructing a first strategy set related to a self-vehicle longitudinal driving game, and calculating a first game income corresponding to a self-vehicle longitudinal driving game strategy; the manual driving vehicle game strategy module is used for constructing a second strategy set about the manual driving vehicle lane changing game and calculating a second game revenue corresponding to the manual driving vehicle lane changing game strategy; the game solving module is used for planning the optimal longitudinal driving track of the vehicle based on a master-slave game strategy according to the first strategy set, the second strategy set, the first game income and the second game income; according to the method, driver behavior characteristics, environmental constraints and multi-objective optimization can be comprehensively considered, game optimization between a self-driving vehicle and a manual driving vehicle is carried out, the decision robustness of a mixed driving environment is improved, unreasonable cut-in behaviors are effectively inhibited, and the collision risk is reduced.

A vehicle includes a speed control system that is configured to increase and decrease vehicle speed when a command is received from a control system. The speed control system may include an engine that provides positive torque, and a friction-based system that is configured to provide negative torque to decrease vehicle speed. The control system may provide negative torque commands to activate a friction-based system of a trailer, and a trailer torque can be adjusted by changing a gain of negative torque commands to the trailer. The control system may utilize a baseline gain if trailer fade is not detected. The control system may decrease the gain of negative torque commands to the trailer if the negative torque of the trailer for an applied gain decreases with time.

The invention relates to the technical field of automobile parts, in particular to visual inspection equipment for automobile parts. The device comprises a detection device body, a base is arranged in the detection device body, a detection conveying device is arranged at the top of the base, an annular conveying device is arranged on one side of the detection conveying device, and a guardrail is arranged between the detection conveying device and the top of the annular conveying device; an intercepting device and a steering device are arranged in the guardrail and located at the top of the detection conveying device, and an image acquisition device is arranged at the top of the base and located over the detection conveying device. A detection conveying device is arranged to be a three-section independent speed control conveying device and is driven by a first motor, a second motor and a third motor respectively, and meanwhile, image acquisition equipment is linked with a speed control system, so that the equipment can dynamically adjust the conveying speed of each section according to the types of parts; the problems of smear of high-precision components and low efficiency of conventional components caused by fixed speed are solved.

The invention discloses an SPMSM speed regulation control method and system based on reduced-order expansion observation composite passive, and the method comprises the steps: collecting the rotating speed and three-phase current signals of a surface-mounted permanent magnet synchronous motor, and controlling the output of an inverter through a space vector pulse width modulation module through a reduced-order expansion observation composite passive controller, thereby controlling the rotating speed; according to the reduced-order expansion observation composite passive controller, on the basis of a port controlled Hamiltonian model, an interconnection and injection damping distribution method is adopted to set a passive controller, a torque observer is designed to estimate the external load torque in real time when a motor operates, the external load torque is fed forward and compensated to the passive controller, and the torque of the motor is calculated. Meanwhile, a reduced-order expansion observer is designed to estimate total error disturbance between an ideal system and an actual system, and a passive controller is corrected in a feedforward mode. According to the method, the robustness of the surface-mounted permanent magnet synchronous motor speed regulation system to load variation, model parameter uncertainty and unknown disturbance can be effectively enhanced, and stable and efficient control under complex working conditions is realized.

The invention relates to the technical field of boiler induced draft fans, and discloses a boiler induced draft fan speed regulation system based on self-adaptive control, which is characterized in that a data acquisition module acquires outlet flue gas flow velocity data and flue gas oxygen content data of a boiler furnace at different sampling moments; the flow velocity analysis module performs time segmentation on the sampling time to obtain a plurality of time intervals, and determines a hearth outlet flue gas flow velocity fluctuation factor according to outlet flue gas flow velocity data; the combustion analysis module determines instantaneous flue gas oxygen content data and calculates a hearth combustion deviation factor; and the speed adjusting module performs weighted summation on the hearth outlet flue gas flow velocity fluctuation factor and the hearth combustion deviation factor to obtain a hearth comprehensive influence coefficient, performs speed regulation on the boiler induced draft fan according to the hearth comprehensive influence coefficient, and realizes multi-source monitoring analysis of the boiler hearth based on time sequence change and data change. Therefore, the dynamic and accurate speed regulation of the induced draft fan is ensured, the combustion efficiency of the boiler is improved, the energy consumption is reduced, and the stability and reliability of system operation are enhanced.

The invention discloses an improved fan speed control optimization method, which belongs to the technical field of PID (Proportion Integration Differentiation) control optimization and comprises the specific steps of S1, constructing a fan speed control system; s2, improving a hyperbolic sine and cosine optimization algorithm; s3, performing parameter optimization on a PID controller module of the fan speed control system by using an improved hyperbolic sine and cosine optimization algorithm, and obtaining a group of optimal values of control parameters Kp, Ki and Kd under a set number of iterations; s4, inputting a group of optimal control parameters obtained through optimization in S3 into a PID controller module, and adjusting the speed of a fan to reach a target rotating speed by controlling a motor driving module; the PID controller parameters of the fan speed control system are optimized through the improved hyperbolic sine and cosine optimization algorithm, so that the control precision and robustness of the system are improved, and the adaptive capacity of the fan in different controlled scenes is enhanced.

The invention discloses a thermal power generating unit transition peak regulation intelligent cruise control method based on an intelligent control algorithm, and relates to the technical field of intelligent control algorithms, and the method comprises the steps: constructing a distributed sensor network through deploying distributed sensors at all key positions of a thermal power generating unit, and obtaining the operation parameters of the thermal power generating unit in real time; external data are introduced and integrated, and short-term load demand prediction is generated according to an intelligent control algorithm; constructing a dynamic optimization function by combining a power grid dispatching instruction and a load prediction result and by taking the minimum coal consumption, the shortest peak regulation response time and the minimum equipment life loss as targets; adopting a hybrid algorithm of model predictive control and reinforcement learning to obtain an optimal control instruction; the control instruction is transmitted to a boiler combustion system and a steam turbine speed regulating system, and the fuel amount, the water supply amount and the valve opening degree are regulated; and dynamically adjusting model parameters and fuzzy rule weights of model prediction control through reinforcement learning to realize adaptive control of the thermal power generating unit.

The invention discloses a steam turbine speed regulating system monitoring method and related equipment, and aims to overcome the defect of high state misjudgment rate of a steam turbine speed regulating system in a variable working condition environment in the prior art. The comprehensive operation state information of the system is obtained by collecting multi-source operation parameters of the steam turbine speed regulating system in real time. And constructing a dynamic reference model by utilizing historical normal state data to adapt to complex operation characteristics of the steam turbine. And a real-time health index is obtained by calculating the deviation between the real-time parameter and the dynamic reference value, so that quantitative evaluation of the health state of the system is realized. And false alarms are effectively reduced through a grading alarm mechanism. Combined features of the health indexes and the multi-source operation parameters are combined, common fault types can be accurately identified, and the fault diagnosis capability is improved. According to the invention, the monitoring precision and reliability of the steam turbine speed regulation system in the variable working condition environment are obviously improved, and powerful support is provided for stable operation and maintenance of the system.

The invention relates to a variable-step-pitch radioactive aerosol filter paper taking mechanism and a detection device, the variable-step-pitch radioactive aerosol filter paper taking mechanism comprises a mounting bracket, a paper feeding auxiliary adjusting mechanism is arranged on one side of the mounting bracket, and a detection device body is arranged on one side of the mounting bracket; according to the device, the stepping motor is arranged to drive the winding action of the filter paper tape body, and the transmission shaft, the winding rod and the speed-adjustable control system are matched, so that the fine control of the sampling spacing is realized, and the device is suitable for the collection requirements of radioactive aerosols with different strengths or periods; the step pitch can be flexibly set according to actual working conditions, the use efficiency of filter paper is improved, the response capacity of a monitoring system to sudden radioactive events is enhanced, meanwhile, error accumulation is avoided through coordinated arrangement between the paper feeding mechanism and the detection device body, closed-loop control over the sampling and detection process is achieved, and the detection efficiency is improved. And the precision and the practicability of the whole device can be improved.

The invention provides an automatic solid powder sample adding instrument matched with an electronic balance. The automatic solid powder sample adding instrument comprises a bracket bottom plate; a lifting mechanism, a driving assembly, a powder barrel and a control system, the lifting mechanism is arranged on the support bottom plate, a cross beam is arranged on the lifting mechanism, and the lifting mechanism can drive the cross beam to ascend and descend; the driving assembly is arranged on the cross beam and can move up and down along with the cross beam; the driving assembly is detachably connected with the powder barrel and can drive the powder barrel to discharge; the control system is a multi-stage variable speed control system, the control system is electrically connected with the lifting mechanism to control the lifting mechanism to ascend and descend, and the control system is connected with the driving assembly to control discharging of the powder barrel. According to the automatic solid powder sample adding instrument, nondestructive installation and automatic use of the balance can be achieved, the sample adding efficiency and the sample adding precision can be considered at the same time through a multi-stage speed change control system, and therefore the structure can complete the weighing task from the sub-milligram level to the gram level.

The invention discloses an electromagnetic pulse coupling signal separation method based on optimized variational mode decomposition, and belongs to the field of signal processing. The method comprises the following steps: carrying out injection test on an engine rotating speed control system shielding wire harness, and constructing an electromagnetic pulse coupling signal data set; a population initialization process of a parrot algorithm is improved by adopting spatial pyramid matching chaotic mapping, population diversity is improved by utilizing uniform ergodicity and initial value sensitivity of a chaotic sequence, and premature convergence is avoided; a mirror reflection learning strategy is introduced to improve the optimization precision and convergence speed of the parrot algorithm; optimization is carried out by using input parameters of improved parrot optimization variational mode decomposition, and mode decomposition is carried out on electromagnetic pulse coupling signals of a rotating speed control system; and calculating a kurtosis factor of each intrinsic mode function, and selecting a reconstruction target signal of the intrinsic mode function with the minimum kurtosis factor. According to the method, efficient and accurate electromagnetic pulse coupling signal separation can be realized, and the stability and reliability of the system in a strong electromagnetic interference environment are improved.

The utility model belongs to the technical field of water-turbine generator set speed regulation system control, and provides a 2 + 3 mode multi-redundancy speed regulation system, which comprises an electrical control component and an execution component, the execution component comprises a double-fine oil filter, a self-centering motor device, a main distributing valve, a first servo proportional valve, a second servo proportional valve, a double-proportional-valve switching valve, a motor / proportional valve switching valve, an emergency stop hydraulic valve and an emergency stop electromagnetic valve. According to the utility model, a proportional valve and stepping motor redundancy control mode or a double-servo proportional valve redundancy control mode and the like can be flexibly selected according to requirements, various fault conditions occurring in the operation process of equipment can be easily handled, and the reliability and the control stability of the equipment are greatly improved.

The invention relates to a conveyor speed regulation system. The material conveying machine speed regulating system comprises a detection unit, a controller and a driver. The detection unit is configured to detect operation state parameters of the mining machine or material load information of the material conveying machine in real time. The controller is configured to receive the operation state parameters of the mining machine or the material load information of the material conveying machine from the detection unit and generate a speed control signal based on the operation state parameters or the material load information. The driver is configured to receive the speed control signal from the controller and adjust power output by the driver to the material conveying machine in response to the speed control signal so as to adjust the running speed of the material conveying machine.

The invention relates to a hydrostatic driving speed regulation system, method, equipment and medium for a harvester, and relates to the technical field of mechanical driving speed regulation, the system comprises a closed hydraulic loop composed of a walking pump and a variable displacement motor, the walking pump is driven by an engine, and a two-position four-way proportional reversing valve group is arranged on the hydraulic loop; a rotating speed sensor is mounted on the variable displacement motor; the controller is used for acquiring real-time state information of the harvester and determining a speed regulation control strategy based on the real-time state information, and the speed regulation control strategy is a first control strategy or a second control strategy; and the speed regulation control strategy is sent to a two-position four-way proportional reversing valve set, so that the two-position four-way proportional reversing valve set adjusts the displacement of the walking pump and the displacement of the variable displacement motor according to the speed regulation control strategy. The technical effects that the speed regulation control strategy is accurately determined according to the real-time state information of the harvester, the displacement of the walking pump and the displacement of the variable displacement motor are reasonably adjusted, and the driving speed regulation requirements of the harvester under different working conditions are met are achieved.

The invention discloses a water turbine speed regulating system oil duct exhaust automation process method, and aims to solve the technical problems of complex water turbine speed regulating system oil duct exhaust operation, low efficiency, easy omission, potential safety hazard and the like in the prior art. According to the method, the problems are solved by realizing full-process automatic control from initialization check to monitoring system state check; specifically, the method comprises the following steps: carrying out comprehensive and detailed initialization check, and confirming a plurality of key parameters and states; the exhaust valve state and oil pressure and air pressure changes are monitored and fed back in real time, and the operation dynamic state is mastered in time; multiple times of repeated inspection confirms exhaust completion, and the judgment accuracy is improved; the pressure of the gas system is averagely detected by multi-point sampling, so that the accuracy of a detection result is ensured; the state of the monitoring system is deeply checked, and the process reliability is guaranteed; meanwhile, a detailed processing mechanism is designed for abnormal conditions; the exhaust operation efficiency and safety of the water turbine speed regulating system oil duct are improved, it is ensured that the exhaust effect is accurate and reliable, and stable operation of the water turbine speed regulating system is guaranteed.

The invention relates to a hydraulic station pressure closed-loop energy-saving control system and method.The hydraulic station pressure closed-loop energy-saving control system comprises a PID adjusting controller, a servo motor and a hydraulic pump, a control signal is input into the PID adjusting controller, the PID adjusting controller adjusts the servo motor according to feedback of speed and pressure signals, the adjusted signal is input into the servo motor, and the servo motor is controlled by the PID adjusting controller. The servo motor acts according to the adjusting signal and drives the hydraulic pump to output pressure. A constant-frequency asynchronous motor used at present is replaced by the servo motor, a servo driving system, a pressure feedback sensor and other assemblies are additionally arranged in a matched mode to form a servo variable-speed control system, pressure and flow form double-closed-loop control, on-demand energy supply of the hydraulic pump is achieved, power matching is optimized, and electric energy waste during low-flow work of the hydraulic station is reduced. According to the electro-hydraulic servo control system, pressure and speed double-closed-loop control is adopted, accurate energy supply according to needs is really achieved, shutdown operation can be achieved in the long-time pressure maintaining or intermittent stage, and therefore optimal energy supply is achieved.

Aspects of the present invention relate to a speed control system (15) for a vehicle (10), to a method and to a vehicle (10). An aspect relates to an off-road speed control system (15). The system (15) causes the vehicle (10) to drive at a target speed value. The system (15) receives ride height information indicative of a ride height setting of a suspension of the vehicle (10), and sets a maximum vehicle speed limit in dependence at least in part on the ride height information.

The invention discloses a speed control system and method for a hydraulic sliding block of a vacuum isothermal forging hydraulic machine, and the system comprises a management terminal, a detection system and a control system, the management terminal is in bidirectional connection with the detection system, and the detection system is in bidirectional connection with the control system. The detection system comprises a detection module, a data acquisition module, a data processing module and a data sending module, and the output end of the detection module is connected with the input end of the data acquisition module. According to the speed control system and method for the hydraulic sliding block of the vacuum isothermal forging hydraulic machine, high-precision control over the speed of the sliding block is achieved through the high-precision displacement sensor and an improved PID control algorithm, the speed control precision can reach + / -0.1 mm / s, speed fluctuation is effectively reduced, the forging quality is improved, and when materials with extremely high speed precision requirements are forged, the speed control precision is greatly improved. Uniform internal structure of the forge piece can be ensured, defects are reduced, and the product percent of pass is increased.

An automatic rotary cutting speed control system for a mower. The rotary cutting speed control system includes a mower deck including an electric motor configured to drive a rotatable blade carrier supporting at least one blade for cutting grass. The system also includes a controller operatively coupled with the electric motor. The controller includes a processor, a memory device operatively coupled with the processor, and cutting speed control logic stored in the memory device and being executable by way of the processor to control rotation of the blade carrier by: (i) receiving a signal representative of a measurement of blade carrier rotation including rotary speed or torque or both, and (ii) adjusting a target blade carrier drive signal based on the received signal to automatically drive the blade carrier.

This invention discloses a feeding speed control system and method based on the material level of a metering tube, applied to a yarn-making line. The yarn-making line includes a metering tube, an electronic scale, and multiple belts. Material flows sequentially from the first belt, the second belt, the third belt, and the metering tube to the weighing device. The feeding speed control system includes a control module and multiple photoelectric detection modules. The metering tube is divided into multiple material zones for characterizing the amount of material inside. The multiple photoelectric detection modules are all located inside the metering tube, and the number of photoelectric detection modules is the same as the number of material zones. Each photoelectric detection module is set to correspond to each material zone and is used to detect the material in the corresponding material zone. The control module is electrically connected to the multiple photoelectric detection modules and is used to control the feeding speed of the first belt, the second belt, and the third belt respectively according to the material information detected by the multiple photoelectric detection modules. This allows for real-time adjustment of the feeding speed of each belt, ensuring that the material flow rate in subsequent processes is quantitatively controllable.

The invention discloses a control system capable of dynamically sensing coal flow speed, which relates to the technical field of coal transportation and comprises a feeding chute and two discharging chutes which are distributed at an included angle and are communicated with the outlet end of the feeding chute, and a mixing mechanism is arranged in the feeding chute. The mixing mechanism can mix coal materials of different coal seams or sources entering the feeding chute and then enter the discharging chute to be shunted, so that the transferring uniformity of the coal materials is effectively improved, the discharging chute comprises a shunting section and a discharging section, one end of the shunting section is communicated with the feeding chute, and the other end of the shunting section is communicated with the discharging section through a flexible transition section. The discharging section is further connected with the shunting section through an outlet adjusting mechanism, the outlet adjusting mechanism is configured to be capable of driving the discharging section to move around the shunting section so as to adjust the outlet direction and height of the discharging section, the discharging section can be matched with the receiving conveying belt at any position, and therefore the conveying efficiency is improved.

The present application belongs to the technical field of dual-axis compressor testing of aircraft engines, and specifically relates to a speed control system and method for dual-axis compressor testing of aircraft engines. The system is designed to be able to switch between the speed control mode of the configuration interface and the speed control mode of the electronic throttle lever by using a speed control mode switching button, and is also designed with speed control mode switching control logic to ensure safe and disturbance-free switching between the speed control mode of the configuration interface and the speed control mode of the electronic throttle lever. In addition, the system is designed to be able to switch between the speed control mode and the speed control mode by using a speed control / linkage control switching button, thereby realizing separate control of the speeds of the inner and outer shafts, as well as dual-axis matching and linkage control, which well meets the requirements of dual-axis compressor testing.

1. The name of this design product: Control box (intelligent calibration platform for diesel engine speed control system). 2. Purpose of this design product: Used for offline detection and functional verification of diesel generator speed control devices. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: Stereoscopic drawing 1.

The invention discloses a high-speed motor full-speed-domain high-precision speed measurement method based on a gear encoder, and belongs to the technical field of high-speed motor control. The method comprises the steps that a gear encoder is coaxially installed at the shaft end of a motor, integer position pulses are obtained through an enhanced orthogonal encoding pulse module, decimal position pulses are obtained through an enhanced capturing module, and rotor mechanical position pulses are calculated by combining the integer position pulses and the decimal position pulses. And calculating a single-interrupt period position pulse increment through a main interrupt program, performing multi-period accumulation, and calculating the rotating speed of the motor in real time based on an accumulation result. According to the method, through a continuous interruption accumulation algorithm, integer and decimal position pulse information is fully utilized, truncation errors and random errors in a traditional pulse measurement method and a time measurement method are effectively reduced, high-precision and fast-response speed measurement of the high-speed motor in the full-speed domain range is achieved, and the method is suitable for a high-speed control system with the speed of more than 60000 revolutions per minute and has a wide application prospect. The system has the advantages of simple structure, strong anti-interference capability and low software and hardware overhead.

The utility model relates to a large speed regulating system for a marine diesel engine, which realizes accurate control of the rotating speed of the diesel engine through components such as a speed regulating controller, an electro-hydraulic control mechanism, a speed setting device, a fly ball, a slide valve mechanism, a prompt drop mechanism, a compensation mechanism, a slide valve core, a power output oil cylinder and a rotating speed sensor. According to the system, under the condition that the electro-hydraulic control mechanism loses power, the rotating speed can be sensed and adjusted through the sliding valve mechanism, the compensation mechanism and the prompt drop mechanism. In addition, the system further comprises a power output oil cylinder which is used for amplifying various adjusting signals of the speed regulator and finally outputting angular displacement. The system can be automatically switched between an electro-hydraulic mode and a mechanical hydraulic mode, and it is ensured that the diesel engine works at the stable rotating speed.

The invention discloses a double-closed-loop fuzzy PID control method for a variable-frequency speed regulation system of a coal mining machine. The method comprises the following steps: inputting an initial target rotating speed; generating a dynamic target rotating speed adaptive to the current working condition; the fuzzy PID controller adaptively adjusts PID parameters according to the speed error between the actual output speed of the motor and the dynamic target rotating speed, and the speed error is accurately converted into expected torque current; the PI current controller outputs a PWM control signal to the coal mining machine variable frequency transmission mechanism based on a current error between the actual torque current and the expected torque current of the motor; and the coal mining machine variable frequency transmission mechanism adjusts output voltage and frequency according to the PWM signal and drives the traction motor to adjust the rotating speed, so that the actual torque current of the motor accurately tracks the expected torque current, and the actual output speed of the motor is consistent with the dynamic target rotating speed. Therefore, rapid, low-overshoot and anti-saturation efficient operation of the coal mining machine under complex disturbance is realized.

This application discloses a speed-up control system, control method, and controller for a steam-driven feedwater pump. The speed-up control system includes a PID controller, a start-up control valve, a load control valve, and a controller. The PID controller has an 8-second operating cycle and a dead zone of 15 revolutions. The controller controls the load control valve to be fully open and reduces the opening of the start-up control valve based on the output value of the PID controller, causing the pump speed of the steam-driven feedwater pump to increase from the turning gear speed to a first target speed. When the pump speed of the steam-driven feedwater pump reaches the first target speed, the start-up control valve is controlled to be closed. The opening of the load control valve is reduced, causing the pump speed of the steam-driven feedwater pump to increase from the first target speed to a second target speed. In this embodiment, by setting the operating cycle of the PID controller to 8 seconds, the number of output changes of the PID controller is reduced, thereby increasing the service life of the start-up control valve.