218results about How to "Prevent overshoot" patented technology

The invention discloses a natural gas station intelligent distribution method based on the Internet of Things, and relates to the technical field of natural gas station distribution design. Flow, pressure and valve state data are obtained in real time through an Internet of Things sensor, and a weighted average method and Kalman filtering are used for data fusion and optimization; meanwhile, the relative position relation between the flow meter and the adjusting valve is judged in real time, branch configuration changes are dynamically recognized, self-adaptive branch matching logic is triggered, and therefore control logic is adjusted; meanwhile, the opening degree of the valve is controlled through PID, self-adaptive dead zone compensation is conducted in combination with historical operation data of the valve and the current state, valve response delay is eliminated, the adjusting precision is improved, and flow fluctuation is reduced; in addition, in the feedback adjusting stage, the adjusting result is continuously monitored, the actual flow and the pressure value are compared with the target value, the opening degree of the valve is dynamically adjusted through real-time error calculation, and the output is kept consistent with the target.

The invention belongs to the field of system control, and provides a constant air volume control method and system of an air conditioner fan system, a first machine learning model is used for predicting environmental parameters, and the environmental parameters comprise temperature, humidity and air duct pressure; determining PID controller parameters based on the predicted environmental parameters; dynamically adjusting air conditioner control parameters based on the current system error and the predicted PID controller parameters; the system state is monitored in real time, a feedback mechanism adjusts a control signal, and a set air volume target is maintained. According to the scheme, constant air volume control of the air conditioner fan system can be efficiently carried out.

The invention discloses a device and method for controlling the speed of a vehicle on an abrupt slope in an off-road environment, and the method comprises the steps: monitoring the slope of a road at a fixed distance in front in real time when a low-speed off-road cruise function is activated in the running process of the vehicle; if the road gradient is greater than the set gradient, determining a steep slope road section, controlling the target vehicle speed to be a set safe vehicle speed based on the road gradient, and adjusting the distribution ratio of front and rear axle driving torque; if the road gradient is smaller than or equal to the set gradient, the vehicle speed is automatically controlled based on cross-country cruise; when the vehicle runs to the abrupt slope road section, the vehicle speed is controlled in different modes based on different positions of the abrupt slope road section where the vehicle runs, and vehicle speed control on the abrupt slope is achieved. The method can assist a driver in changing the vehicle speed and the vehicle driving state in a safe mode, and the situation that the driver feels uncomfortable or uncomfortable in the process is avoided.

The utility model discloses a blocking mechanism and a sample placing rack blocking system, in the process of moving from a feeding end to a discharging end through a sliding space, a sample placing rack passes through a pushing position and is blocked by a blocking block to stop at a blocking position, and after the sample placing rack stops at the blocking position, the sample placing rack is blocked by the blocking block to stop at the discharging end. The driving assembly can drive the pushing block to move to the blocking position in the direction from the pushing position to the blocking position, meanwhile, the driving assembly can drive the blocking block to rotate to the opening position from the blocking position, and after pushing of the sample containing frame is completed, the pushing block is driven by the driving assembly to return to the pushing position from the blocking position; the pushing block rotates to the avoiding position at the pushing position, meanwhile, the driving assembly drives the stopping block to rotate to the stopping position from the opening position, and at the stopping position, on the basis that linkage of the pushing block and the stopping block is achieved, overshoot of the sample containing frame is prevented, the system risk is reduced, the continuous operation function is achieved, and the return efficiency of the whole stopping mechanism is also improved; the power is saved, and the integration degree is improved.

The invention relates to the technical field of permanent magnet synchronous motor control, in particular to a diagnosis-free adaptive fault-tolerant control method and system for a six-phase permanent magnet synchronous motor under an open-circuit fault, and discloses the following steps: S1, converting the voltage and current of the six-phase permanent magnet synchronous motor from a three-phase static coordinate system to a two-phase static coordinate system through Clark conversion, voltage and current in the two-phase static coordinate system are converted into a two-phase synchronous rotating coordinate system through Park conversion; s2, acquiring a current relation between q-axis current of the six-phase permanent magnet synchronous motor and the two-phase static coordinate system according to the two-phase synchronous rotating coordinate system, and further acquiring two-phase static coordinate system reference current for realizing fault tolerance under an open-circuit fault; and S3, optimizing the control signal of the reference current through a phase-locked loop of a second-order generalized integrator. According to the method, diagnosis-free adaptive fault-tolerant control under the open-circuit fault of the six-phase permanent magnet synchronous motor can be realized, and the problems of misdiagnosis and time delay are reduced.

The present invention discloses a method and system for calibrating the zero position of a permanent magnet synchronous motor with different rotation speeds, and relates to the technical field of drive motors for new energy electric vehicles. The method includes: S1: pre-positioning the rotor position and determining the initial zero position value of the resolver; S2: controlling the drive motor to a predetermined speed; S3: implementing zero current control through a controller to allow the motor speed to drop freely; S4: adjusting the zero position value of the resolver to keep the target voltage at zero; S5: recording the zero position value of the resolver at different speeds and fitting the curve to complete the calibration. According to the technical solution of the present application, high-precision resolver zero position angle calibration can be achieved without the need for additional bench resources, which reduces the complexity of the calibration process and has high practical value.

The invention discloses a dynamic frequency adaptive automatic gain control system, which belongs to the field of dynamic frequency adjustment and comprises a radio frequency power amplifier, an attenuator, a logarithmic detector, a low-pass filter and a comparison and control signal generation module. The amplified radio frequency signal is input into the attenuator; the attenuator attenuates the signal so that the input radio frequency signal reaches a range suitable for detection of the logarithmic detector after attenuation; the logarithmic detector converts the radio-frequency signal into a direct-current voltage proportional to the signal power; voltage signals of direct-current voltage output by the logarithmic detector are smoothed through a low-pass filter, and rapidly changing components are removed; and the comparison and control signal generation module compares the smoothed voltage with a reference voltage, generates a control signal for adjusting the gain, and adjusts the gain. According to the invention, instant gain adjustment is provided under the condition of rapidly changing signals, and the energy efficiency of the system is improved.

The invention provides a driving method, a driving circuit of an amplification module and electronic equipment. The method comprises the following steps: when a power tube is conducted, outputting a first conduction current to a grid electrode of the power tube; after the gate-source voltage of the power tube rises to the threshold voltage, the first conduction current is reduced to the second conduction current, so that the reverse recovery current of the body diode corresponding to the power tube is reduced; after the gate-source voltage of the power tube is increased from the threshold voltage to the Miller voltage, the second conduction current is increased to third conduction current until the power tube is completely conducted; and when the power tube is turned off, the grid electrode of the power tube outputs a first turn-off current until the power tube is completely turned off. In the conduction process of the power tube, after the gate source voltage of the power tube rises to the threshold voltage, the first conduction current is reduced to the second conduction current, so that the reverse recovery current of a body diode corresponding to the power tube is reduced, overshoot of the power tube in the conduction process is avoided, and the conduction safety of the power tube is improved.

The invention discloses a method and device for controlling vehicle driving, a vehicle and a storage medium. The method comprises the steps of obtaining the speed of a vehicle; gradient information is obtained, wherein the gradient information represents the inclination degree of the ground where the vehicle runs currently; based on the speed and gradient information of the vehicle, a control result is determined, the control result indicates whether an integral term in a specified calculation formula is cleared or not, the specified calculation formula is a calculation formula adopted when the PID control algorithm is adopted for carrying out driving control on the vehicle, and the integral term represents an accumulative error generated when the PID control algorithm is adopted for carrying out driving control on the vehicle; and controlling vehicle driving based on the control result. According to the technical scheme provided by the embodiment of the invention, when the gradient information of the current driving ground of the vehicle changes and the acceleration process needs to be ended, the accumulated error can be eliminated, the situation that the acceleration process of the vehicle cannot be ended in time is avoided, excessive overshoot of the vehicle speed is avoided, and thus the riding experience of a user is improved.

The invention relates to the technical field of microfluidics, in particular to a carbon quantum dot hydrothermal synthesis system and method based on microfluidics thermal field equilibrium, which comprises a thermal field sensing module, an equilibrium analysis module, a thermal field coupling module, an equilibrium regulation and control module and a closed loop execution module, the thermal field sensing module is used for collecting array temperature on the surface of the micro-fluidic chip and fluid pressure data in a flow channel, and reconstructing three-dimensional temperature distribution in the micro-channel through a multi-physics field coupling algorithm to obtain a real-time thermal field state matrix. According to the invention, by constructing a multi-physical field coupling algorithm of a thermocouple array-flow resistance model-conjugate heat transfer equation, the three-dimensional temperature distribution of the fluid in the micro-channel can be inverted and reconstructed by using surface temperature and pressure data, so that a control system can pass through a chip matrix, and the temperature of the fluid in the micro-channel can be controlled. The radial temperature gradient and the axial thermal distortion in the fluid are directly sensed, the hysteresis and the error of sensor measurement are eliminated, and a real physical basis is provided for accurate temperature control.

The invention discloses a dynamic performance optimization method and device for a robot joint, electronic equipment and a readable storage medium, and the method comprises the steps: obtaining the acceleration and inertia of a target joint of a robot when it is detected that the robot is in a preset operation state; according to the accelerated speed and the inertia, the inertia force of the target joint is obtained through calculation; and feedforward compensation is conducted on joint control of the robot according to the inertia force, and therefore the dynamic performance of the target joint is optimized. According to the method, feedforward compensation is carried out on the joint through the real-time inertia force obtained through calculation, the dynamic performance of the joint is remarkably improved under the conditions that overshoot is not caused and the rigidity of the robot is not changed, and overshoot of the position and the speed of the joint is avoided.

The invention relates to the field of control, in particular to a flight attitude control method and system for an unmanned aerial vehicle, and the method comprises the steps: obtaining an expected attitude angle instruction and actual attitude angle feedback of the unmanned aerial vehicle, calculating an attitude angle error, employing a tracking differentiator to calculate a transition process for the expected attitude angle instruction, and enabling a tracking rate factor to achieve the control of the flight attitude of the unmanned aerial vehicle when the instruction is subjected to step change. Based on initial attitude angle error setting, instruction smooth transition is ensured, based on a transition signal output by a tracking differentiator and an estimated value of an expansion state observer, a basic control quantity is generated through nonlinear state error feedback, and control gain is adjusted on line according to a lumped disturbance amplitude. And predicting the lumped disturbance historical sequence by using a grey prediction model, calculating a predicted value at a future moment, and carrying out algebraic summation on the basic control quantity, a compensation component of the lumped disturbance predicted value and a gyroscopic moment decoupling component to generate an attitude control moment signal so as to realize stable flight of the unmanned aerial vehicle.

The invention discloses a control system of a numerical control machine tool, which comprises a control acquisition module, a communication supervision module, a sensitivity evaluation module, a sensitivity grading module and an intervention guiding module, and is characterized in that the control acquisition module calculates a fuzzy control complexity coefficient, the communication supervision module calculates a communication response gain coefficient, and the sensitivity evaluation module constructs a sensitive state model; the precision sensitive control index is output, the sensitive grading module grades the influence degree of the communication delay and the complexity of the control variable on the control system of the numerical control machine tool, and the intervention guiding module intervenes the control system of the numerical control machine tool according to the grading result. The problems of positioning errors and machining surface quality reduction are reduced, the machining precision of the numerical control machine tool is improved, the response capability of a communication system is monitored and evaluated in real time, timely transmission and execution of control instructions are ensured, and response delay and overshoot phenomena are avoided.

The invention discloses a method, device and equipment for avoiding engine flameout and a storage medium, and the method comprises the steps that the clamping stagnation state of a mixing valve is judged according to the current target opening degree and the actual opening degree; according to the clamping stagnation state of the mixing valve, PID control calculation is conducted on the opening degree error between the current target opening degree and the actual opening degree; and when it is judged that the mixing valve is opened in the stable clamping stagnation state, an integral item of PID control over the opening degree error is reset so as to avoid engine flameout. The method aims at solving the problems that in the prior art, due to the fact that a mixing valve of a low-pressure EGR system forms duty ratio overshoot when the mixing valve is opened due to clamping stagnation, the mixing valve is fully closed, external air does not enter an air cylinder, and an engine flames out or shakes, the method can effectively recognize that the mixing valve enters the clamping stagnation opening state from the clamping stagnation state, and the working efficiency of the low-pressure EGR system is improved. PID control adjustment is carried out on the mixing valve, and the problems of engine flameout and jittering caused by overshoot of the mixing valve are solved.

The invention belongs to the technical field of temperature control, and discloses a large surface source black body parameter-free temperature control method and device and a medium, and the method comprises the steps: S1, obtaining a data set; s2, performing problem modeling; s3, constructing a large surface source blackbody parameter-free temperature control model on the basis of the deep DQN, and then training the large surface source blackbody parameter-free temperature control model by using the training data set; s4, verification and adjustment are carried out, the test data set is used to evaluate the large surface source blackbody parameter-free temperature control model, and an optimal large surface source blackbody parameter-free temperature control model is obtained; and S5, applying the optimal large surface source blackbody parameter-free temperature control model to a large surface source blackbody temperature control system to control the temperature of the large surface source blackbody. According to the invention, based on the deep DQN network, through accurate state and action design and an optimized reward function, the temperature can be rapidly and accurately adjusted to a target value within the minimum number of action steps.

The invention discloses a voltage compensation method, a voltage compensation circuit and electronic equipment. The voltage compensation method comprises the following steps: acquiring bus voltage in a power switch circuit and energy storage current in an energy storage compensation circuit; obtaining a bus amplitude limiting voltage target value by using the bus voltage target value and the bias adjustment value, and subtracting the bus voltage from the bus amplitude limiting voltage target value to obtain a bus amplitude limiting voltage error value; performing proportional integral operation and amplitude limiting processing on the bus amplitude limiting voltage error value to obtain an energy storage current target value, and subtracting the energy storage current from the energy storage current target value to obtain an energy storage current error value; performing proportional integral operation on the energy storage current error value to obtain a current regulation output value; and a compensation control signal is obtained by using the current regulation output value and is used for triggering the energy storage compensation circuit to change the charging and discharging states, so that the bus voltage is compensated and regulated to a set threshold range. Through the above mode, the voltage compensation method can effectively stabilize the bus voltage within the set threshold range, and the control logic is simple.

The utility model discloses a secondary counting and bag arranging device for carton bags, which comprises a feeding conveying belt and a discharging conveying belt, the feeding conveying belt distributes materials to the discharging conveying belt through a follow-up distribution mechanism, the follow-up distribution mechanism comprises a transition conveying assembly, a first push plate and a second push plate, and the first push plate and the second push plate are arranged on the transition conveying assembly. The transition conveying assembly can transversely move in the conveying direction of the conveying belt, the two sides of the transition conveying assembly are in butt joint with the feeding conveying belt and the discharging conveying belt correspondingly, and the first push plate and the second push plate are oppositely arranged, used for abutting against the two sides of a carton package, capable of ascending and descending and capable of longitudinally moving in the direction perpendicular to the conveying direction of the conveying belt. The conveying tail end of the feeding conveying belt and the conveying tail end of the discharging conveying belt are each in butt joint with a redundancy removing mechanism, and the conveying tail end of one side of the discharging conveying belt is further in butt joint with a bag collecting and arranging mechanism. The counting and distributing device has the advantages of being capable of counting and distributing the strip packages output by the strip packaging machine and preventing the strip packages from being stacked and overshoot in the high-speed transfer process of the strip packages.

The invention provides a driving planning method for a high-speed movement mechanism, which comprises the following steps of: planning a first driving stage and a second driving stage which are continuous from the maximum overshoot of inertial vibration and vibration duration; the first driving stage is a high-speed and high-acceleration motion driving stage; and the second driving stage is a dynamic low-speed and low-acceleration S-shaped curve driving stage. Rapid movement is still achieved in the first driving stage, and high efficiency of the movement process is guaranteed; by setting a certain gap, overshoot and continuous oscillation of a positioning target caused by high-speed large-inertia motion are avoided, and the positioning target is prevented from being impacted or damaged by a motion mechanism; according to the method, the positioning target is reached through the second driving stage, overshoot and inertial oscillation at the final target can be avoided, it can be guaranteed that the influence of high-speed motion inertial impact on the positioning precision is avoided, high-precision positioning is achieved, the whole positioning operation time is not prolonged, and high efficiency of the whole operation is guaranteed.

The utility model discloses a live ballast trolley rope retreating sensor capable of being used underwater for a long time, and relates to the technical field of live ballast robots. The ballast raking device comprises a ballast raking rake body, a basic installation frame is installed on the surface of the ballast raking rake body through fixing bolts, a non-contact sensor is installed on one side wall of the basic installation frame, and a rope withdrawing sensor is fixedly installed on the other side wall of the basic installation frame. When the trigger rod is stressed to rotate to the trigger position of the non-contact sensor, the non-contact sensor collects signals and commands the raking rake body to be lifted upwards, a Hall sensor is adopted as the non-contact sensor, a certain detection distance is achieved, and water leakage caused by action of a contact piece of a conventional sensor can be avoided; after the surface of the non-contact sensor is sealed by glue, the non-contact sensor can be soaked in water, and in addition, the non-contact sensor is laterally mounted, so that the problems of signal false triggering and the like caused by an uncertain detection distance can be avoided.

A mechanical arm trajectory planning method based on a structure-oriented motion profile belongs to the related technical field of robot control, and comprises the following steps: S1, inputting an expected position point matrix P of a joint space and physical constraints of a mechanical arm; s2, initializing parameters, wherein the parameters comprise a slope coefficient and a local asymmetric coefficient of the point-to-point trajectory model, a variable boundary, a population size, an external memory size and a maximum number of iterations; s3, generating an initial track Omega based on the structure-oriented motion profile; s4, optimizing an initial track omega according to an analytical method priority strategy; and S5, outputting an optimal solution or a Pareto optimal solution set. Efficient and high-precision operation of the mechanical arm is achieved, and the production efficiency and the operation precision are improved.

The invention discloses a multi-phase power supply and a control circuit and a control method thereof. The multi-phase power supply includes a multi-phase power conversion circuit. The control circuit comprises a phase enabling module which is used for generating a plurality of phase enabling signals according to a plurality of PWM signals and a plurality of zero-cross detection signals; and the first logic module is used for generating a plurality of switch control signals of the multi-phase power conversion circuit according to the plurality of PWM signals and the plurality of phase enable signals, and when the selected phase power conversion circuit is subjected to phase reduction, the phase enable module outputs the switch control signals after the phase current of the selected phase power conversion circuit passes zero. The selected phase enable signal is flipped from an active state to an inactive state, thereby delaying turn-off of the selected phase power conversion circuit. According to the multi-phase power supply control circuit, the turn-off time of the selected phase power conversion circuit is delayed to the zero-crossing time of the phase current during phase reduction, so that inductive current oscillation during phase reduction can be effectively reduced, and the output stability of a system during phase number change is improved.

The present invention relates to the technical field of AMT control, and discloses an AMT clutch position control method, wherein the actual position of the clutch is obtained in real time through a clutch position sensor; the AMT control unit calculates the clutch set position according to the driving intention and the vehicle state; the clutch actual position is subtracted from the clutch set position to obtain the clutch position deviation value; the air flow of the clutch actuator cylinder is PID controlled according to the clutch position deviation value to obtain the target air flow value; the working state of the solenoid valve of the clutch actuator is determined according to the target air flow value, and the position of the clutch is adjusted. The present invention also discloses an AMT clutch position control device. The AMT clutch position control method and device of the present invention realize the precise control of the clutch position, and can effectively improve the followability of the clutch position control.

The utility model belongs to ship equipment technical field discloses a kind of wave compression device and boat. Wave compression device includes hinged six-bar mechanism, spoiler piece and rotary drive part, rotary drive part drives spoiler piece rotation by hinged six-bar mechanism, to make spoiler piece have the working position of extension into water. The utility model is driven by first connecting rod continuous rotation, by the hinged transmission of fourth connecting rod and spoiler piece, the swing angle of spoiler piece is naturally limited by the rotation range of first connecting rod, without setting rigid stroke end, allowing rotary drive part continuous rotation, without reversing, avoid the "overshoot phenomenon" of traditional reciprocating motion, eliminate the vibration, wear and tear and control deviation problem caused by overshoot fundamentally.

The invention provides a high-temperature superconducting magnet temperature equalization control method for circulating cold helium, and belongs to the field of superconducting magnet temperature control, and the method comprises the steps: calculating a difference value between a target temperature and an actual measurement temperature, and obtaining a steady-state error of each group of magnets; constructing a mathematical model of the cold helium cooling system according to a singular perturbation theory; a control target is determined, and the overall performance and stability of the cold helium cooling system are improved; and constructing a singular perturbation control model based on the variable universe Smith. According to the invention, the response speed and precision of the cold helium cooling system can be improved.

The application discloses a top-opening drum washing machine inner drum positioning method and a washing machine. The method comprises the following steps: after setting a washing program, the inner drum is controlled to rotate at a preset low speed; the rotation angle of the inner drum is collected and the deviation of the rotation angle from a target angle is calculated; the motor speed is controlled by PID closed-loop regulation with feedforward compensation based on the deviation, wherein the feedforward compensation amount is calculated according to the load weight, the speed fluctuation and / or the deviation change rate; when the deviation is less than a preset threshold, segmented braking is performed until the inner drum is locked at the target angle position; if the locking fails, the inner drum is reversely rotated to a preset angle, and the segmented braking is retried with corrected braking parameters. The application combines PID regulation with feedforward compensation and segmented braking, introduces a failure retry and parameter self-adaptive correction mechanism, and realizes high-precision, impact-free and high-reliability positioning of the inner drum.

The present invention relates to a remote interactive ultrasound-guided puncture system and method with master-end force feedback, comprising a prosthesis, a master-end operating arm, a simulated operating table, a slave-end robot, and a display unit; the master-end operating arm is provided with a gripping portion, and the gripping portion contacts the prosthesis to realize simulated operation; the master-end operating arm is provided with an encoder, a distance measuring sensor, an inclination sensor, and a master-end multi-dimensional force sensor, which can obtain the position, posture information, and force information of the gripping portion; the simulated operating table comprises a table top and a driving mechanism; the slave-end robot is provided with a slave-end multi-dimensional force sensor for real-time detection of the fitting force; the slave end is interconnected and communicated with the master end, and operates in real time according to the position, posture, and force information of the gripping portion; the display unit displays the master-end posture information, multi-dimensional force information, and the slave-end on-site audio and video information, medical images, and slave-end robot force signals in real time. The present invention realizes real-time interaction, feedback, and verification between the master and the slave, and the simulation scene is more realistic and the medical operation is more accurate.

The present application discloses a charging control device and a thermometer, the device includes a voltage conversion module, a charging module and a control module, the charging module includes a first charging seat, a second charging seat, a first resistor and a second resistor; the voltage conversion module connects the charging module, the control module and the battery, the control module connects the charging module, one end of the first resistor connects the first charging seat and the control module, one end of the second resistor connects the second charging seat and the control module, the other ends of the first resistor and the second resistor are grounded, and the first charging seat and the second charging seat are connected to a charged device; the voltage conversion module converts the first direct current into the second direct current and supplies power to the charging module and the control module; the charging module charges the charged device; the control module detects the voltage drop of the first resistor and the second resistor, determines the current flowing through the charged device according to the voltage drop of the first resistor and the second resistor, and controls the charging state of the charging module according to the current. In the embodiment of the present application, the cost can be reduced.

The utility model relates to a self-adaptive robot and a cleaning assembly. The self-adaptive robot comprises a robot body; the cleaning module comprises a cleaning part and a connecting piece which are connected through a rotating module, and the connecting piece is fixedly connected with the robot body; the rotating module comprises a rotating part; the first end of the rotating piece is rotationally connected with the connecting piece, and the second end of the rotating piece is fixedly connected with the cleaning part; the first limiting mechanism comprises a limiting path arranged on the connecting piece or the rotating piece and a limiting piece correspondingly arranged on the rotating piece or the connecting piece, and when the rotating piece is installed on the connecting piece, the limiting piece can stretch into the limiting path so as to limit the adjustable range of the included angle of the rotating piece from a first angle to a second angle; the second limiting mechanism comprises an adjusting part, an adjusting position is correspondingly arranged on the connecting piece, and the adjusting part can move relative to the adjusting position through the adjusting position. According to the invention, the self-adaptive angle of the cleaning component which passes through the ridge and tilts up can be flexibly and reliably adjusted.

This utility model relates to the field of garment processing technology and discloses a dart template, including a working platform. An operating mechanism is installed on the top of the working platform to facilitate the dart-pinching process. An installation mechanism is installed on the front top of the working platform to facilitate the installation and replacement of the template. The operating mechanism includes a fixed square plate installed on the top of the working platform. A sliding square groove is formed in the middle of the fixed square plate, and a fixed plate is fixedly connected to the bottom inner side of the sliding square groove. A movable plate is slidably connected to the top of the fixed plate, and a limit component is installed on the top of the movable plate. In this utility model, the operator pushes the movable plate to slide longitudinally along the fixed plate, achieving precise positioning through the cooperation of the limit blocks. When the movable plate reaches the preset position, the limit blocks engage, providing a stable foundation for subsequent processes and ensuring product quality and work efficiency.

This invention discloses a phase-shifted full-bridge plasma power supply based on all SiC devices, belonging to the field of special power supply technology. It includes: a rectifier unit with a power factor correction circuit; an inverter unit containing a phase-shifted full-bridge topology composed of SiC power devices and an energy storage inductor, achieving zero-voltage switching through phase-shift control; a transformer unit; an output unit including an output filter capacitor; and a control unit that uses an incremental PID algorithm to generate phase-shift control signals. This invention analyzes the differences in zero-voltage switching between the leading and lagging bridge arms, utilizes the low output capacitance characteristics and dynamic dead-time adjustment of SiC devices, broadens the soft-switching range under light loads, effectively reduces output current ripple, and improves dynamic response speed and overall efficiency.