43 results about "Speed control system" patented technology

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.

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.

In one or more aspects of the present disclose a velocity control device of a transportation that comprises a memory, storing one or more computer-readable instructions, and a processor, configured to execute the one or more computer-readable instructions. The velocity control device monitors one or more parameters associated with the transportation system, receives data associated with the one or more parameters from one or more sources, obtain a current velocity of the transportation system based on at least one of the one or more parameters, obtains a current acceleration associated with the transportation system based on at least one of the one or more parameters, and causes the transportation system to adjust the first acceleration to the second acceleration.

This utility model discloses a sports cooling fan, including a fan module and a main unit module. The fan module includes a waterproof high-power fan with a rotating clamping assembly on one side. The main unit module includes a waterproof control box containing a battery. A stepless speed control circuit board is located in the waterproof control box and on one side of the battery. The stepless speed control circuit board has a speed control knob extending outside the waterproof control box and a power connector extending outside the waterproof control box. The power connector is connected to the waterproof high-power fan via a spring wire. Beneficial effects: Through a split design, backpack shoulder strap fixing structure, waterproof high-power fan, stepless speed control system, and multi-module integrated design, it achieves the effects of not interfering with exercise, strong airflow cooling, waterproof durability, and convenient operation.

An oscillator (2), particularly a balance wheel (21) / main spring (22) oscillator, includes an inertial element (21) and a return spring (22) that rotate around a pivot axis, Escapement (3), especially dual impulse escapement, especially Swiss lever escapement (3), A method for adjusting a speed control system (100), including, The adjustment method is to facilitate and / or balance the restart of the speed control system. Steps to adjust the beat setting, in particular to a non-zero value, and / or A step of adjusting the degree to which the anchor assembly (31) is inserted into the escape wheel (32), and / or A step to adjust the degree to which the anchor assembly is inserted into the escape wheel. including, Adjustment method.

Title: Method and system for securing the takeoff of a vehicle equipped with a vehicle speed control system. This method for securing the takeoff of a vehicle equipped with a speed control system and an engine includes, following engine shutdown by the speed control system, the issuance of a takeoff confirmation request, the detection of a resumption of vehicle speed control by the driver instead of the speed control system, and securing the takeoff by limiting engine torque when an obstacle is detected and a resumption of speed control by the driver via acceleration is detected. No figure is provided for the abstract.

The application relates to the technical field of electrolytic copper plates, and discloses an automatic feeding speed control system for electrolytic copper plates, which comprises an up-drawing furnace, a displacement sensor, a mechanical hand, a high-temperature corrosion-resistant laser sensor, a PLC controller, a feeding chain plate machine, a voice loudspeaker and a touch screen; the output end of the displacement sensor is signal-connected with the input end of the PLC controller; the output end of the high-temperature corrosion-resistant laser sensor is signal-connected with the input end of the PLC controller; the output end of the PLC controller is bidirectional signal-connected with the input end of the touch screen; and the output end of the PLC controller is signal-connected with the input end of the mechanical hand. The automatic feeding speed control system for electrolytic copper plates has high liquid level control precision, and the product quality is obviously improved. The application periodically collects liquid level data through the displacement sensor, combines a PID self-adaptive control algorithm, realizes dynamic closed-loop adjustment of feeding speed, and makes the actual liquid level of copper liquid always stable within the target liquid level value + / -1mm.

This invention discloses a dynamic speed control system based on the speed feedback of a permanent magnet synchronous motor, relating to the field of motor speed control technology. It includes: a data acquisition module for acquiring three-phase stator current data, raw physical speed feedback data, and stator voltage command data of the motor, and inputting the stator voltage command data into a preset motor mathematical model to obtain model-estimated speed data; and a real-time deviation calculation module for calculating the real-time deviation divergence between the raw physical speed feedback data and the model-estimated speed data, obtaining residual fluctuation based on the three-phase stator current data, and mapping the real-time deviation divergence and residual fluctuation to obtain a dynamic feedback reliability factor. Its beneficial effects include reducing the fluctuation of the speed loop output torque current, extending the mechanical life of the motor, and improving the overall energy efficiency stability of the system.

This invention relates to an automatic feeding method based on the upper grate advance time, belonging to the field of waste incineration control technology, and includes the following steps: S1: The DCS control system collects the start and end times of the upper grate advance and calculates the upper grate advance time; S2: The DCS control system recalculates the feeding speed of the feeder based on the change in the upper grate advance time, and sends the calculation result to the incinerator grate hydraulic station control system to adjust the feeding speed of the feeder; S3: The DCS control system recalculates the number of cycles of the upper grate based on the change in the upper grate advance time, and sends the calculation result to the incinerator grate hydraulic station control system to adjust the number of cycles of the upper grate; S4: The DCS control system recalculates the number of cycles of the lower grate based on the change in the upper grate advance time, and sends the calculation result to the incinerator grate hydraulic station control system to adjust the number of cycles of the lower grate.

This invention discloses a speed control system for a coupling robot in a marshalling yard. Utilizing a reducer and a coupling robot, the system provides continuous, targeted speed control throughout the yard, preventing collisions caused by speeding trains and significantly improving the safety of shunting operations. Furthermore, it increases the safe coupling rate and eliminates track closures. Moreover, during marshalling operations at the rear of the marshalling yard, it eliminates outdated methods such as wheel chocks and handbrakes for vehicle speed control and braking, reducing the workload of shunting personnel and improving the working environment. The system achieves automatic speed control for shunting operations at the rear of the marshalling yard, completely eliminating the need for wheel chock brake safety personnel and further promoting the intelligent development of marshalling yards.

A speed control system is configured to control a propulsion system of a mobile agricultural machine to ramp from a first ground speed to a second ground speed based upon a location of a boundary crossing point. The speed control system generates an effective boundary crossing point location based on the location of the boundary crossing point and a system delay between when a section control signal is generated and when a corresponding section control function is performed. A section control system generates section control signals based upon the effective boundary crossing point location.

The application discloses a kind of electric bicycle helmet alcohol detection systems based on hall sensor, to improve the safety of driver.The system includes helmet alcohol detection system and car speed control system, both are linked through wireless communication.Helmet alcohol detection system is built-in alcohol detection sensor module, human existence detection module and helmet interface detection module, for judging whether driver drinks and whether helmet is correctly worn.Car speed control system detects the voltage output by hall sensor in vehicle handlebar to judge vehicle driving state;when voltage is non-zero (vehicle driving), the system automatically queries the state of helmet alcohol detection system.If driver drinks or does not correctly wear helmet is detected, the system will make the vehicle unable to drive through car speed control system, and trigger sound and light alarm to remind driver.The application combines wireless communication and sensor technology, can effectively prevent drunk driving and not wearing helmet and other dangerous behaviors, significantly improve the safety of driver.

This invention discloses a rod-type spring buffer mechanism for a radial forging chuck, comprising an inner sleeve, a worm gear, a worm, and several circumferentially distributed spring rods. One end of each spring rod is fixed to the tailstock, and the other end is connected to the worm gear. This mechanism places the buffer point between the worm gear and the inner sleeve, utilizing the bending deformation of the spring rods to absorb forging impact energy. This invention offers advantages such as strong high-frequency adaptability, good transmission system protection, and adjustable buffering force. Furthermore, this invention discloses two optimized embodiments: a spring rod structure with fixed supports at both ends and a layered buffer structure with added compression spring groups; a switching mechanism that allows switching between the two buffering methods; and a continuously variable speed control system for adapting to high-frequency impacts, further improving the performance and reliability of the mechanism.

This invention relates to the technical field of steam turbine control, and particularly to a monitoring and energy regulation method for a steam turbine speed control system based on hydraulic servo state quantity fusion. The method includes: segmenting the system based on the sequential relationship between the hydraulic actuator pressure state and the valve displacement state to form a hysteresis loop segment index, facilitating the location of hysteresis; generating hydraulic hysteresis state tags by comparing the hysteresis loop segment index with a reference hysteresis loop index to distinguish abnormal types such as start-up hysteresis, servo jamming, position leakage, and return friction; further generating energy regulation quantities by combining the power response position after valve displacement, allowing the hysteresis identification results to be directly converted into opening limit, valve position holding, or load correction; and finally, adjusting the valve opening command or unit load command by the steam turbine speed controller to reduce load fluctuations and valve over-adjustment caused by hydraulic hysteresis, thereby improving speed regulation stability.

The application provides a speed control system of a weak magnetic method stress on-line detector and a control method thereof. The detector speed control system is used for detecting a component to be detected. The detector speed control system comprises a control structure and a control module. The control structure and the control module are signal connected. The control structure comprises an inner shell, an outer shell, a driving motor, a blade, a first flow hole, a second flow hole and a speed measuring sensor. The inner shell is arranged in the outer shell. The first flow hole is arranged between the inner shell and the outer shell. The driving motor is arranged in the inner shell. The output end of the driving motor is connected with a rotating rod. One end of the rotating rod which is arranged to pass through the side wall of the inner shell is connected with the blade. A plurality of second flow holes are arranged on the side wall of the outer shell which is close to the blade. The first flow hole is connected with the second flow hole. The problems that the existing nondestructive detection device cannot control the running speed when working in the pipeline, the detection precision is poor, the detection time is increased and the detection efficiency is reduced are solved.

The present application relates to the technical field of aero-engine control, and discloses a disturbance-resistant steady-state rotating speed control system for a micro turbojet engine based on a sliding mode variable structure, which comprises: a parameter solving unit that calculates a notch frequency based on the phase-reversed superposition relationship between a combustion branch and a bearing lubrication branch; a pre-filtering unit that processes a rotating speed deviation signal by using a band-stop filter with a center frequency of the notch frequency to generate an avoidance deviation signal; a sliding mode controller that determines a gain adjustment coefficient based on the amplitude attenuation ratio at the notch frequency, and generates a primary fuel instruction by using a continuous second-order hyper-spiral algorithm; and a post-filtering unit that performs notch filtering on the primary fuel instruction again to generate a final fuel instruction. The present application can effectively avoid the gain collapse frequency band caused by fuel shunting configuration, prevent the misinjection of control energy into a non-rotating speed channel, and improve the steady-state control precision and operation reliability of the engine.

This invention discloses a vibration suppression system and method based on momentum cancellation, comprising an XY worktable mounted on a platform, a movable compensation unit, a drive unit, and a control unit; the control unit is electrically connected to the drive unit, and the control unit acquires the acceleration 'a' of the XY worktable. t And based on the mass m of the XY worktable t With the mass m of the movable compensation unit c The ratio is used to calculate the acceleration 'a' of the movable compensation unit. c The drive unit operates based on acceleration a. c This invention drives the movable compensation unit, causing the sum of the inertial forces of the XY worktable and the movable compensation unit to approach zero, thereby suppressing vibrations transmitted to the platform. The invention features a simple structure and stable control, requiring no additional mechanical limits or increased overall weight. It achieves vibration suppression at the source by controlling the movement of the movable compensation unit through a closed-loop speed control system.

This invention discloses a general-purpose intelligent magnetic stirrer for chemical laboratories, belonging to the field of chemical laboratory technology. It includes: a constant current source circuit for providing a stable current to the speed control knobs; a microcontroller with a built-in ADC module that sequentially collects the resistance values ​​of each speed control knob via DMA and generates corresponding PWM waves based on the resistance values; a brushless DC motor whose speed is controlled by the PWM waves generated by the microcontroller, and whose speed feedback line is connected to the microcontroller through an isolation circuit to achieve PID closed-loop control; an aluminum alloy stirring platform equipped with eight independently operating motors and the speed control system; and a communication interface enabling a host computer to intelligently control the stirrer. This invention ensures more accurate collection of resistance values, thereby improving the accuracy of motor speed control. This accuracy is particularly important for experiments requiring long-term, continuous, and uniform stirring.

Provided are a ship speed control system that automatically performs control so that the ship speed of a ship that is greatly affected by external disturbances remains constant, and a ship equipped with said system. To achieve this purpose, one aspect of the present disclosure is a ship speed control system (100) for controlling the sailing speed of a ship (10), the system comprising: a main propulsion device (11) of the ship, including an internal combustion engine (12) and a propeller (13) driven by the internal combustion engine (12); an auxiliary propulsion device (14) that assists the propulsive force of the ship (10) using natural energy; a ship speed detection device (20) that detects the sailing speed of the ship (10); a main engine controller (30) that controls the main propulsion device (11); and a control device (40) that determines whether the sailing speed of the ship (10) is within a prescribed range including a preset ship speed V0, and, if the sailing speed is not within the prescribed range, transmits a signal for changing the rotation speed N of the propeller (13) to the main engine controller (30) on the basis of the result of a calculation based on a prescribed propeller rotation speed during constant ship speed control.

The present invention relates to a high-precision speed control system for three-phase squirrel-cage induction motors. It integrates advanced state observers to estimate unmeasurable variables and a sliding-mode controller with an equivalent strategy, ensuring robust speed and flux tracking. The system operates in the steady-state a-β frame, with an architecture validated through simulations demonstrating high accuracy, fast response, and low harmonic distortion. Its application spans industrial sectors such as robotics, electric vehicles, and automation, offering energy efficiency and regulatory compliance.

The application provides an electrically-driven guide pipe support for diaphragm wall concrete pouring and a use method, and relates to the technical field of diaphragm wall construction equipment, and comprises a main frame system which is composed of a guide pipe support main body, a standing platform, vertical main vertical rods, horizontal main vertical rods, main inclined braces and auxiliary inclined braces; a hydraulic leveling system which is composed of a plurality of adjustable supports, wherein the adjustable supports adopt a four-oil-cylinder synchronous hydraulic leveling mechanism; an electrically-driven lifting system which is composed of a pulley block, a steel wire rope, a hook group, a motor switch and a motor driving group, wherein the electrically-driven lifting system is used for lifting the guide pipe through the hook group and adjusting the lifting speed of the guide pipe through the motor driving group; and a control system which is composed of a data acquisition unit, a data acquisition unit and a motor control unit which are connected in sequence. The application realizes the cooperative automatic control of the guide pipe lifting and the guide pipe support posture adjustment in the diaphragm wall concrete pouring process.

The application discloses a robot adaptive path tracking control method based on improved model prediction control, which comprises the following steps: 1, establishing a wheeled robot dynamics control system model; 2, designing a novel adaptive path tracking controller; 3, designing a lateral-longitudinal decoupled model prediction control algorithm, deducing a lateral error model prediction control law based on a relative error model; 4, designing an adaptive fuzzy control law to estimate a desired running speed value; and 5, designing a longitudinal speed sliding mode surface, deducing a speed sliding mode law, and proving the closed-loop stability of the speed control system by using a candidate Lyapunov function. The method can guarantee that the tracking controller has high stability and high real-time performance, solves the tracking error divergence problem in the steering process by using an adaptive law, solves the poor real-time performance problem of the model prediction control by using the controller decoupling, and improves the tracking control precision and system real-time performance of the wheeled robot under a large-curvature continuous steering path.

This invention discloses a dynamic multi-objective optimization method for vehicle speed control driven by historical evolution trend learning. This method first models the PID parameter optimization problem of vehicle speed control as a dynamic multi-objective optimization problem, and then designs a dynamic multi-objective optimization algorithm through a historical evolution trend learning mechanism to accurately solve for the Pareto optimal PID parameter solution set, providing a reliable parameter selection basis for vehicle speed control systems under dynamic operating conditions. The initial population is divided into regions, and the initial and final population regions of the previous environment are matched according to the nearest neighbor principle. The displacement direction of the region centroid is determined as the historical evolution trend. Combining the relative positional relationship between the initial population regions of the old and new environments, the historical evolution trend is mapped to the corresponding population region of the new environment. Finally, the learned evolution trend is used as the optimal search direction to guide individuals within the population region to generate efficient offspring, improving the search efficiency and solution accuracy of dynamic optimization.

The application relates to a variable-speed shallow ploughing and soil crushing machine and a working method, which comprises a rack, a three-point suspension frame arranged at the front end of the rack and used for being hung with a tractor, a crushing mechanism arranged at the rear end of the rack, the crushing mechanism comprising a crushing shaft rotatably arranged on the rack, a plurality of crushing assemblies arranged on the crushing shaft, the crushing assembly comprising a plurality of three-section whip type crushing knives arranged in the circumferential direction of the crushing shaft, a variable-speed control system arranged on the rack, the variable-speed control system comprising a hydraulic oil tank, a hydraulic pump, a cooler, an electromagnetic proportional speed regulating valve and a hydraulic motor which are sequentially connected through pipelines, the hydraulic pump being connected with an output shaft of the tractor, the variable-speed control system further comprising a PLC controller connected with the electromagnetic proportional speed regulating valve, and the hydraulic motor being in transmission connection with the crushing shaft through a transmission mechanism. The crushing shaft rotation speed of the application can be infinitely adjusted according to the difference of the surface soil, and the three-section whip type crushing knives can be self-adaptively adjusted according to the soil moisture content during the working process.

This application relates to a performance evaluation system for a turbine speed control system oriented towards uncertainty handling, including an uncertainty source quantification module, a functional evaluation module, a hardware evaluation module, a comprehensive evaluation module, and a result output module. The uncertainty source quantification module is used to identify three types of uncertainty sources in the operation of the turbine speed control system: data noise, operating condition fluctuations, and fault determination ambiguity, and quantify their impact. The functional evaluation module and the hardware evaluation module respectively conduct evaluations with uncertainty correction on the functional execution effect and hardware equipment status of the speed control system. The comprehensive evaluation module integrates the evaluation results of the two modules and dynamically allocates weights. The result output module outputs evaluation conclusions containing credibility and uncertainty source tracing. This application provides scientific support for preventive maintenance and accurate fault location of turbine speed control systems, effectively improves the robustness and engineering adaptability of evaluation results, and ensures the stable operation of the speed control system under complex operating conditions.

This invention belongs to the field of ship navigation control technology and discloses a method for coordinated speed control of ships encountering each other in a two-way navigation scenario. It analyzes the correlation between the safety boundary of oncoming ships encountering each other and speed matching in a two-way navigation scenario, and establishes a full-process quantitative speed control system including "data acquisition, situation prediction, constraint quantification, feasible region solution, and closed-loop correction," obtaining a core logical model for the coordinated speed matching and linkage of oncoming ships and the guarantee of encounter safety. It establishes a hierarchical constraint for coordinated two-way speed, including the safe lateral distance of encounter, the maximum permissible relative speed, and ship maneuvering limits, obtaining a feasible solution. Taking the minimum total speed adjustment of the two ships as the core control objective, it solves for the optimal coordinated speed combination under the premise of safety constraints, and simultaneously sets a hierarchical closed-loop correction mechanism under navigation disturbances to achieve precise coordinated control of ship encounter speeds in a two-way navigation scenario, improving the controllability of waterway navigation safety, traffic efficiency, and the engineering implementation and scenario adaptability of the solution.

The application provides a slope automatic obstacle avoidance and speed control system and method of an electric wheelchair, and relates to the field of control systems.The control system comprises a driving module, an automatic obstacle avoidance module, a self-balancing controller module, a speed sensor module, a heart rate detection module, an alarm module, a speed reduction module and a central processing module.The driving module, the automatic obstacle avoidance module, the self-balancing controller module, the speed sensor module, the heart rate detection module, the alarm module and the speed reduction module are electrically connected with the central processing module.The application can remind the passenger to avoid the road section that the electric wheelchair cannot climb in advance, estimate the speed after 2s by measuring the acceleration and real-time speed, reduce the speed in advance before reaching the upper limit of the wheelchair climbing speed, measure the distance of the obstacle by ultrasonic sensors and infrared sensors, realize automatic obstacle avoidance by a fuzzy control algorithm, and realize the slope stability of the wheelchair by the self-balancing control module.

This invention discloses a controllable deceleration top speed regulation control system for a turnaround tipper chutes, belonging to the field of vehicle chutes speed control technology. It includes sensor detection, remote control, local control, controllable deceleration top execution, and an alarm unit. This invention detects the vehicle's chutes height on the turnaround line, calculates the basic resistance to chutes based on the law of conservation of energy, and dynamically controls the amount of work done by the controllable deceleration top, achieving precise control of the empty car chutes speed. The sensor detection unit collects chutes height and axle counting data; the remote control unit calculates the resistance and transmits it to the local control unit; the local control unit, based on turnout signals and control logic, controls the work done by the controllable deceleration top through relay interlocking; the alarm unit automatically alarms and triggers the tipper to stop when the vehicle stops or chutes obstruct the chutes. This invention features precise speed control, system simplicity, low investment and maintenance costs, and high safety and reliability.

This invention relates to the field of mobile robot control technology. The RGV (Automated Guided Vehicle) linear velocity control method provided by this invention aims to achieve efficient and safe operation of the vehicle on complex tracks. By acquiring real-time vehicle position, speed, and track information, and using a preset control algorithm to plan the speed change curve, the system adjusts the motor speed and steering to control the vehicle speed. Simultaneously, it receives vehicle feedback and compares it with the expected planned data, using a genetic algorithm to optimize control commands. This invention improves the operating efficiency, safety, and compatibility of RGVs on complex tracks, providing technical support for applications such as automated storage and retrieval systems (AS / RS).

This invention discloses an internal feedback cascade speed regulation system for boiler fans in a gas-fired power plant, relating to the field of energy-saving technology in gas-fired power plants. The system includes: an internal feedback cascade speed regulating motor, which is a wound-rotor induction motor, with a main winding and a regulating winding on its stator side, and a rotor winding on its rotor side. The main winding is connected to an AC power supply to generate a rotating magnetic field; a converter system connected between the rotor winding and the regulating winding, used to feed back the slip power of the rotor circuit to the regulating winding; and a control system electrically connected to the converter system, used to change the motor slip rate by adjusting the inverter angle of the converter system, thereby achieving fan speed regulation.