187results about "Mechanical pressure/force control" patented technology

The invention discloses a ground wire multi-machine synchronous traction pay-off scheduling method and system, relates to the technical field of high-voltage transmission line construction, and is used for solving the problem of insufficient multi-machine real-time tension synchronization precision in the existing method. A tension sensor and a speed sensor which are arranged on each traction device collect a tension value, a traction speed value and position coordinate data of a ground wire in real time, and transmit the data to a central scheduling controller; establishing a multi-machine unified time synchronization reference and tension reference model, calibrating a timestamp through a GPS module, and initializing a threshold value based on historical parameters; comparing tension values one by one to calculate a deviation vector sequence; activating a compensation algorithm to execute a speed fine adjustment and tension compensation instruction; iteratively calculating the feedback adjustment value until the deviation is stable; and integrating the synchronous data to the overall paying-off scheduling model to dynamically update the path planning and speed curve. According to the method and the system, the problem of insufficient multi-machine real-time tension synchronization precision in the prior art is effectively solved.

The invention relates to the technical field of control of manufacturing units, in particular to a composite material rod piece winding tension dynamic compensation control method and system. The method comprises the following steps of: calculating an instantaneous linear velocity pulsation quantity caused by the change of a non-circular section contour of a core mold at each moment; according to the dynamic elastic modulus and the equivalent viscosity coefficient, calculating a phase correction factor for representing the viscoelastic response lag of the prepreg tape at each moment; based on the instantaneous linear velocity pulsation quantity and the phase correction factor at each moment, a dynamic compensation torque instruction is obtained, and the dynamic compensation torque instruction is in negative correlation with the phase correction factor; and the dynamic compensation torque instruction is output to the tension unwinding motor, so that the adjustment of winding tension is realized, the accuracy of tension dynamic compensation control is effectively improved, and the product quality is effectively improved.

Systems and methods for controlled-force thermal management device installation that helps thermal management of emerging, next-generation devices are provided. A system includes a mounting assembly for a thermal management device. The mounting assembly includes a fastener and a coupler. The system further includes a compression and locking interface configured to lock with the coupler and compress the mounting assembly to a predetermined loading point using a controlled force. The fastener is installed when the mounting assembly is at the predetermined loading point.

The invention relates to the technical field of tension control, and discloses a longitudinal shearing equipment tension fault-tolerant control method based on multi-source information fusion, which comprises the following steps: acquiring detection parameters in each period, evaluating the credibility of each first type of parameters and each second type of parameters, judging whether each first type of parameters and each second type of parameters reach the standard or not according to the credibility, and if yes, judging whether the first type of parameters and the second type of parameters reach the standard or not. If any one of the first type of parameters does not reach the standard, screening out an estimation model corresponding to the first type of parameters from a preset model library according to other standard first type of parameters and second type of parameters, and calculating an estimated value according to the screened estimation model; replacing the corresponding first type of parameters with the pre-estimated values and inputting the pre-estimated values into a preset control algorithm to calculate target tension; and outputting the target tension. When data of a single sensor or multiple sensors are abnormal, an optimal tension control instruction can be given by utilizing residual reliable data and an internal physical relationship thereof.

The invention provides a seed disc pay-off speed control method and device for preventing a seed rope from loosening and tensioning, and relates to the technical field of agricultural production.The method specifically comprises the steps that the advancing speed of a rope sowing machine and a seed rope tension signal are collected in real time, and effective data are obtained after filtering and noise reduction processing; calculating an expected tension reference value based on the traveling speed and the seed disc radius data, and comparing the actually measured tension with the expected tension reference value to obtain a tension deviation value; judging whether the seed rope is in a loose, tensioned or normal state according to whether the deviation value exceeds a preset tolerance range; if the state is abnormal and the deviation is in a controllable interval, calculating a speed compensation amount through a feedback control algorithm according to the size and direction of the deviation and the current speed; the basic pay-off speed is calculated according to the advancing speed and the seed rope winding density, the target rotating speed is generated after the compensation amount is overlaid and sent to the speed control executing mechanism, the seed disc is driven to rotate according to the target speed, the tension deviation is made to return to the tolerance range by adjusting the pay-off speed, and therefore the normal stress state of the seed rope is maintained.

The invention is suitable for the technical field of electric power line construction, and provides a tension machine control system based on tension feedback and a control method thereof, and the method comprises the following steps: obtaining lead parameters, working condition data and environment data of current stringing construction in real time; determining the comprehensive specific load of the wire according to the wire parameters and the environment data; updating a target tension value of the wire in real time according to the comprehensive specific load, the wire parameters, the working condition data and the environment data of the wire; according to the working condition data, the actual tension value of the current wire is determined, and the tension deviation is calculated based on the current target tension value; and based on a digital PID control algorithm, the tensioner is controlled in real time according to the tension deviation. According to the wire parameters, the working condition data and the environment data, the target tension value of the wire can be updated in real time, then the tension machine can be automatically controlled based on a digital PID control algorithm by sensing the actual tension value of the wire in real time, and high-precision control over tension is achieved.

The invention discloses an adaptive control method and system for paying-off tension of a ground wire, particularly relates to the technical field of automatic control, and is used for solving the problem of control misalignment caused by incapability of distinguishing and stripping multi-span coupling vibration interference in an existing tension control method. Firstly, high-frequency fluctuation components are identified by monitoring frequency band energy distribution of tension signals, then state space trajectory similarity and causal network topology of multi-point vibration signals are cooperatively analyzed, and local or global coupling of vibration sources is accurately judged; then, extracting a dominant vibration frequency and a phase difference, and separating a vibration interference component from the original tension signal through a phase compensation adaptive filter according to the dominant vibration frequency and the phase difference; and finally, subtracting the interference component from the original tension to obtain a real tension value for closed-loop adjustment of the output of the tension equipment. Accurate identification and dynamic compensation of vibration interference are achieved, and the control precision of the pay-off tension and the system stability are remarkably improved.

The invention relates to the technical field of intelligent manufacturing and precision machining, and discloses a skylight guide rail clamp clamping force intelligent regulation and control method and system.The skylight guide rail clamp clamping force intelligent regulation and control method comprises the steps that multi-dimensional sensing data of a skylight guide rail clamp is obtained and preprocessed; acquiring a force displacement data pair and identifying a flexibility coefficient of the guide rail; the elasticity modulus is inversely calculated through the flexibility coefficient, and temperature correction is carried out; calculating theoretical stress distribution and a displacement field, and fusing and correcting the theoretical stress distribution and the displacement field with measured data of the sensor; evaluating stress safety, deformation stability and vibration stability; the current clamping force distribution is adjusted; the clamping force adjustment amount is calculated and converted into a control instruction for adjustment, the guide rail is machined, and quality detection is conducted; updating the quality prediction model, predicting tool wear and calculating compensation; according to the invention, through an online learning and adaptive optimization mechanism, the system can continuously learn and evolve and automatically adapt to changes of production conditions.

The invention discloses an active tension control device and control method for a unilateral sewing thread of a composite preform, and the device comprises a tension control drive unit, a sensing monitoring unit, a thread guide unit and a thread consumption unit, and the tension control drive unit comprises a tension control motor and a thread roller; the sensing monitoring unit comprises a tension sensor, a laser distance measuring sensor and a sewing action driving encoder, the thread guide unit mainly assists in transferring a sewing thread from a thread releasing area to a working area and comprises a thread guide wheel and a porcelain eye, and the thread consumption unit is a sewing working area. According to the control method, the speed control ring and the tension control ring jointly achieve tension control, the speed control ring combines the rotating speed of a real-time sewing action driving motor and the diameter of a real-time thread roller to achieve coarse adjustment, and then closed-loop real-time tension adjustment is achieved through the controller. By means of the active tension control method and device for the single-side sewing thread of the composite prefabricated body, active control over the sewing tension can be achieved, and the sewing quality of the prefabricated body is effectively improved.

The invention provides a self-adaptive force feedback control method for a pressure sensing artificial hand. The self-adaptive force feedback control method comprises the following steps: S1, acquiring a pressure signal; s2, pressure signal preprocessing; s3, setting a pressure threshold value; s4, pressure signal contrastive analysis; s5, generating an adaptive force adjusting signal; s6, executing driving force; and S7, acquiring and feeding back a force feedback signal. Through sensing-analysis-adjustment-feedback closed-loop control, self-adaptive grabbing of the artificial hand to different objects is achieved, the core is that the grip strength is dynamically adjusted based on pressure signals, and grabbing stability and object safety are both considered.

The invention provides a roadway dynamic support stress regulation and control system and method based on multi-source information fusion, and relates to the technical field of roadway support safety. According to the method, the axial stress of an anchor rod, the contact pressure of a support component and surrounding rock and parameters of a microseismic event in the surrounding rock are obtained in real time; generating an axial stress deviation index and a contact pressure deviation index, and further calculating a surrounding rock instability risk degree; calculating a micro-seismic risk index based on the strain energy density change of the anchor rod before and after the micro-seismic event; the average risk change rate and the risk accumulation value are calculated in combination with data at historical collection moments, the comprehensive adjustment priority of the anchor rods is determined after normalization, the anchor rod supporting stress is dynamically adjusted according to the comprehensive adjustment priority, and real-time and accurate regulation and control of roadway supporting are achieved.

The invention relates to the technical field of tank cover packaging pressure control, and discloses a pressure uniformity control method for a tank cover packaging device, and the method comprises the following steps: arranging a plurality of pressure sensors in a packaging region, and collecting three-dimensional stress data; constructing a stress tensor model based on the collected data, and calculating the average pressure of the main shaft; constructing an optimization control function, and adjusting pressure output by taking stress tensor isotropy as a target; according to an adjusting strategy, stress diffusion in an initial loading stage is guided in combination with the elastic flexible structure layer; applying relaxation loading in an asynchronous microcycle according to the guidance of an optimal control function; and recording a loading history, dynamically updating loading parameters and performing compensation adjustment. According to the invention, by introducing the distribution design of the flexible structure which decreases progressively along the gradient direction, and by naturally diffusing and loading stress, the impact concentration phenomenon of a local loading point is significantly weakened, a stress transition zone in a complex structural member can be effectively organized, and the overall stress uniformity and stability in the packaging process are improved.

An intelligent valve self-adaptive sealing method based on working condition perception belongs to the technical field of industrial process control and fluid transportation, and comprises the following steps: step 1, multi-dimensional working condition perception and data preprocessing; 2, modeling based on a sealing requirement of a physical model and data driving; 3, optimizing a sealing force set point based on an intelligent decision-making strategy; fourthly, closed-loop control and execution are carried out; and 5, carrying out sealing state health diagnosis and early warning. According to the intelligent valve self-adaptive sealing method achieved through the intelligent valve self-adaptive sealing system, a working condition sensing and preprocessing module, a sealing requirement calculation module, a sealing setting optimization module, an intelligent control and precision execution module and a state diagnosis and early warning module are included. According to the method, the sealing force set point can be adjusted in advance according to the predicted working condition change, and dynamic and real-time self-adaptive setting, prediction and closed-loop optimization of the valve sealing force are achieved; and meanwhile, real-time transparency and diagnosis early warning of the sealing state of the valve are achieved.

The invention relates to the technical field of automobile part testing, in particular to automobile door hinge durability test equipment which comprises a base, an automobile door body and a control system, a first mounting seat and a second mounting seat are mounted on the base and the automobile door body respectively, and a servo actuator is hinged between the first mounting seat and the second mounting seat. A load sensor is mounted between the servo actuator and the first mounting seat, and a first displacement sensor is mounted on the servo actuator; a servo actuator, a load sensor and a displacement sensor are integrated on the same control system, a closed-loop force control system is constructed, and a traditional constant air cylinder load is replaced; the test deviation caused by load distortion is avoided, and the test authenticity, the working condition simulation precision and the data reliability of the automobile door hinge durability test equipment are ensured.

The present application relates to the technical field of railway engineering, and provides a load cable tension compensation control method and system based on multi-sensor fusion, which solves the problems of unstable control effect, insufficient system robustness and adaptability. The method comprises the following steps: obtaining the tension change detected by a strain sensor and the spatial vibration trajectory detected by an acceleration sensor during the dynamic vibration process of the load cable; predicting the target deformation damping range required by the adjustable mechanical buffer device at the anchoring end of the load cable; generating the pulse width and pulse interval corresponding to the deformation damping correction amount according to the tension change, the spatial vibration trajectory and the target deformation damping range; and adjusting the deformation damping parameters of the adjustable mechanical buffer device according to the pulse width and pulse interval, so that the tension fluctuation amplitude converges to the preset fluctuation threshold interval. The present application realizes accurate perception and adaptive compensation of the load cable tension fluctuation, and improves the response speed, stability and environmental adaptability of the control system.

The invention provides a supporting rod axial force adjusting method, system and device for a deep foundation pit and a medium. The method comprises the steps that an axial force calculation model is constructed, and the axial force calculation model calculates the supporting rod axial force based on the environment temperature, the hydraulic oil temperature and the hydraulic shaft stroke; and obtaining the current calculation axial force in real time based on the axial force calculation model, and adjusting the axial force of the supporting rod in real time according to the difference value between the current calculation axial force and the current actual axial force. The axial force of the supporting rod can be automatically and dynamically adjusted, so that the supporting axial force can protect the stability of the deep foundation pit support structure, and the deep foundation pit support structure cannot be damaged due to overlarge force.

The invention discloses a horizontal continuous impact test device and method, and particularly relates to the technical field of mechanical environment tests.The horizontal continuous impact test device comprises a test base, a force bearing seat and a workpiece assembly seat are installed at the top of the test base, and a through installation frame is installed in the middle of the force bearing seat; an impact test rod directly facing the workpiece assembly seat is slidably connected to the mounting rack, and a transmission block is mounted in the middle of the impact test rod. A motor supporting frame is mounted on the outer side of the mounting frame, a first servo motor is mounted on the outer side of the motor supporting frame, an output shaft of the first servo motor penetrates through the mounting frame to be provided with an adjusting shaft, a linkage shaft is mounted at the end of the adjusting shaft, a driving ring is hinged to the middle of the linkage shaft, and a first annular groove is formed in the middle of the outer side of the driving ring. The transmission block is slidably connected into the first annular groove, and an adjusting mechanism used for adjusting the inclination angle of the driving ring is installed in the force bearing base. Through rotation of the inclined driving ring, a continuous horizontal impact test is realized.

The invention provides a closed-loop force-controlled size measuring device and method, the measuring device comprises a fixing frame, a force sensor, an object placing table and a pressing plate, the inner bottom side of the fixing frame is provided with a first vertical moving mechanism, the first vertical moving mechanism comprises a moving part and a fixing part connected with the fixing frame, and the fixing part is provided with a second vertical moving mechanism. The moving part can reciprocate relative to the fixed part in the vertical direction, and the storage table is connected with the moving part; a second vertical moving mechanism connected with the pressing plate is arranged on the inner top side of the fixing frame, and the second vertical moving mechanism can drive the pressing plate to reciprocate in the vertical direction; the force sensor is arranged at the bottom end of the first vertical moving mechanism, the fixed end of the force sensor is connected with the fixed frame, and the force bearing end of the force sensor is connected with the moving part. According to the invention, the first vertical moving mechanism can bear bending moment generated due to the fact that the workpiece to be measured is biased on the object placing table, it is ensured that the force sensor is only subjected to vertical pressure, and the force control precision can be improved.

The application provides a kind of hollow core polarization maintaining optical fiber cutting machine tension control system and control method, belong to optical fiber cutting control technical field, system uses four layers architecture of perception layer, processing layer, control layer, execution layer: perception layer is measured by double strain gauge symmetrical compensation device and temperature sensor synchronous acquisition mechanics and environmental signal;Processing layer adopts Wheatstone bridge, instrument amplifier, low-pass filter, 16-bit ADC and temperature compensation unit to realize signal multistage conditioning;Control layer deploys feedforward adaptive PID compound control system, combined with optical fiber diameter-tension parameter library feedforward compensation and dynamic PID adjustment, and integrates step loading control and fault early warning mechanism;Execution layer adopts torque mode motor and outputs linear tension through lead screw mechanism.

This application relates to a cardiopulmonary resuscitation (CPR) device and its control method and apparatus. The method includes: outputting a compression command to a compression machine and recording the number of compression command outputs; when the number of outputs reaches a preset value, outputting a delay command to the compression machine and a ventilation command to the ventilator to instruct the ventilator to perform ventilation while the compression machine is in the compression state; and, after confirming that the ventilator has completed the ventilation command and the compression machine has completed the delay command, resetting the number of outputs to zero and returning to the steps of outputting compression commands to the compression machine and recording the number of compression command outputs. This method enables the ventilator and compression machine to work together, effectively avoiding the problem of high airway pressure injury that easily occurs when ventilation and compression operations conflict, and improving the success rate of CPR.

The invention discloses a variable-force pressing method and device of a seeder based on vision and sensor fusion. The method comprises the following steps: acquiring an earth surface soil image through an industrial camera, extracting soil structure characteristics, and constructing a multi-source information fusion model to calculate a target ballast force in combination with ballast force and soil water content information acquired by a pressure sensor and a humidity sensor; and through feedforward calculation of the electric push rod and PID closed-loop control, self-adaptive adjustment of the ballast force is realized. And meanwhile, a model optimization and self-learning mechanism is introduced, so that the accuracy and adaptability of ballast force adjustment are improved. The matched device comprises a rack, a press wheel, an electric push rod, a camera, a pressure sensor, a humidity sensor and other structures, and the problems that an existing seeder press device is insufficient in press force adjusting precision and low in intelligent level are solved. The pressing force can be adjusted in a self-adaptive mode according to different soil conditions, the soil pressing uniformity and the sowing quality are improved, and the device is suitable for intelligent pressing operation of agricultural machines such as a sowing machine.

The invention relates to the technical field of terminal control, in particular to a fascia gun operation control method and system based on the Internet of Things. The method comprises the following steps that a fascia gun is started, pressure sensing data are collected in real time through a main control circuit board, and if the pressure sensing data exceed a preset pressure threshold value, an operation mode is dynamically adjusted; in the operation mode, the main control circuit board electrifies the displacement electromagnet, the electric brush assembly makes contact with the conducting ring, the gear motor is driven to drive the screw to rotate, the screw pushes the sliding block to generate displacement, and the eccentric distance variation is determined. The motion working condition is judged according to the eccentric distance variation; and executing operation mode self-adaptive adjustment according to the motion working condition, and recording a working condition data log. On the basis of a terminal control technology, the fascia gun can automatically switch the eccentric distance and the operation mode in different stress states, so that massage output is matched with the actual use working condition, and the use safety and the control intelligence level are improved.

The invention relates to the technical field of thin-wall cantilever beams, in particular to a vibration control system and method for a light-driven thin-wall cantilever beam. According to the invention, the elastic piece formed by connecting the LCE fiber in series with the elastic fiber is tightened between the free end and the fixed point of the thin-wall cantilever beam, and the infrared laser or the Fresnel lens is utilized to focus sunlight to emit strip-shaped light to irradiate the LCE fiber, so that a light-driven geometric self-switching mechanism is constructed; the system can drive the LCE fiber to generate periodic deformation under constant illumination, and then automatically switch inside and outside an illumination area through the system configuration change, and finally excite and maintain the self-excited vibration of the thin-wall cantilever beam, and the scheme gets rid of the dependence of a traditional vibration system on an external alternating power supply and a complex control circuit. Light simplification of the system structure and autonomy of energy supply are achieved, the problem of electromagnetic interference is effectively solved, and a new way is provided for design of a cable-free and miniaturized intelligent vibration system.

A method for operating a dispensing system (1) with at least one container (2) having a container opening (6), and a dispense head (4) mounted on a robot arm (11) of a robot (10). The dispense head (4) is automatically connected to the container opening (6) of the container by means of the robot (10), such that liquid (3) can be removed from the container (2) or liquid (3) can be supplied to the container (2). When the dispense head (4) is inserted into the container opening (6), forces acting on the dispense head (4) are detected by means of an arrangement of force sensors (14). The robot arm (11) carries out compensation movements dependent upon the detected forces, whereby the dispense head (4) is aligned to the container opening (6).

The present application provides a kind of based on multi-source information fusion's roadway dynamic support stress regulation system and method, it is related to roadway support safety technical field, the present application obtains the axial stress of anchor rod, support component and surrounding rock contact pressure and surrounding rock internal microseismic event parameter in real time;Generation axial stress deviation index and contact pressure deviation index, and then calculate the risk degree of surrounding rock instability;Based on the change of microseismic event before and after anchor rod strain energy density calculates microseismic risk index;The average risk change rate and risk cumulative value are calculated in combination with the data of historical acquisition time, the comprehensive adjustment priority of anchor rod is determined after normalization, and the stress of anchor rod support is dynamically adjusted accordingly, to realize the real-time, accurate regulation and control of roadway support.

The invention provides a water pressing plate self-calibration fault-tolerant control method and system and a computer readable medium, and relates to the technical field of ship stabilization. The self-calibration fault-tolerant control method for the water pressing plate comprises the following steps: S1, acquiring attitude data of a ship and state data of each actuator; s2, calculating according to the attitude data to obtain a current expected control torque vector, and calculating according to the state data to obtain a current equivalent control efficiency matrix; s3, calculating the current health degree of each actuator according to each piece of state data; s4, according to the current expected control torque vector, the current equivalent control efficiency matrix and each current health degree, current control input data of each actuator is obtained through calculation, and the actuator is suitable for driving the corresponding water pressing plate assembly according to the corresponding current control input data; and S5, the steps from S1 to S4 are repeatedly executed till the ship is in the expected pose.

The invention relates to the technical field of servo constant force control systems, in particular to a high-precision pressure control system which comprises a control unit, a driving unit, a servo motor, a force transmission unit and a force detection unit. The control unit generates a control instruction based on a preset deceleration force threshold value and an end point deceleration force threshold value according to the comparison result of the actual contact force fed back by the force detection unit and the deceleration force threshold value and the comparison result of the difference value of a preset target force set value and the actual contact force and the end point deceleration force threshold value. The driving unit responds to a control instruction and drives the servo motor to be switched among the idle stroke speed, the force application speed and the end point speed, so that impact, overshoot and oscillation on a workpiece are effectively avoided, and the stability of the force application process and the control precision of a final force value are remarkably improved.

The invention provides a pressure adjusting method and device based on cutter plate data, and the method comprises the steps: obtaining the cutter plate data of a mold plate, the cutter plate data comprising tangent line data and / or indentation line data; determining an optimal effective line pressure value according to the tangent line data and / or the indentation line data; a correction coefficient is measured and calculated through an initial mold pressing value set during budgeting operation and an actual mold pressing value measured through mold pressing testing; and according to the tangent line data, the indentation line data, the optimal effective line pressure value and the correction coefficient, a target pressure value is obtained through a preset pressure algorithm, and the pressure of the mold plate is adjusted according to the target pressure value. According to the invention, the pressure can be rapidly set and adjusted under different working conditions, the dependence on manual skills is reduced, rapid plate replacement is achieved, and the working efficiency and the quality of processed products are effectively improved.

This invention provides a method and system for intelligent pressure regulation and protection of a tracked photovoltaic cleaning robot, relating to the field of photovoltaic cleaning robot technology. The method includes processing pressure signals using a dual-timescale analysis method, extracting features through a chaotic twin neural network, establishing a baseline compensation model, generating an adaptive pressure threshold, calculating the optimal relative displacement and velocity values ​​based on the real-time motion parameters of the tracked vehicle, and using ranking learning to construct a multi-objective optimization controller to adjust the output characteristics. This invention effectively prevents damage to photovoltaic panels by the tracked vehicle, improving cleaning efficiency and safety.

The zero-gravity pressure head adjustable structure comprises an adjusting plate, a sliding mounting base is arranged on the adjusting plate, a sliding mounting block is arranged on the sliding mounting base, and a top plate is arranged at the upper end of the sliding mounting base. A first adjusting bolt and a second adjusting bolt which penetrate through the top plate are arranged on the top plate, the first extension spring and the second extension spring are arranged in parallel, and one end of the first extension spring and one end of the second extension spring are connected with the bottom of the first adjusting bolt and the bottom of the second adjusting bolt respectively. The other end of the first extension spring and the other end of the second extension spring are both connected with the sliding installation block, the pressure detection assembly is arranged between the sliding installation base and the sliding installation block, and by arranging the first extension spring and the second extension spring, the self gravity of the sliding installation block and components below is balanced through the tension of the first extension spring and the second extension spring; a zero-gravity state is realized, and the interference of the dead weight of a structural part on the actual pressure of a product is effectively eliminated.