29results about How to "Compensation error" patented technology

The invention belongs to the field of circuits, and particularly relates to an analog front-end circuit for capacitance detection and a current calibration method, the analog front-end circuit comprises a driving circuit, a to-be-detected capacitor, a chip signal input and output interface circuit, a current amplification circuit or charge amplification circuit, an integrating circuit and an analog-to-digital converter which are connected in sequence; the leakage current measurement and calibration controller is used for receiving a signal of the analog-to-digital converter and outputting a control signal for calibrating the leakage current to the current calibration circuit; the output end of the current calibration circuit is connected with the input end of the integrating circuit, and the current calibration circuit is used for adjusting the output of the current calibration circuit to calibrate the magnitude of the current input into the integrating circuit when receiving the control signal for calibrating the leakage current. According to the application, the leakage current measurement and calibration controller is arranged at the output end of the integrating circuit, the leakage current of the analog front-end circuit is measured, and the control signal is output to adjust the output of the current calibration circuit, so that the magnitude of the current input into the integrating circuit is calibrated, and errors caused by imbalance of the leakage current and the current of the amplifying circuit can be compensated.

The invention relates to the technical field of carton production detection, and discloses a carton production line intelligent detection system comprising an industrial camera module used for collecting carton appearance images; the dynamic speed sensor is used for monitoring the conveyor belt speed; the mechanical vibration sensor is used for detecting vibration interference of the conveyor belt; the image processing module is used for correcting and analyzing the acquired image; the control module is used for feeding back and controlling the detection result in real time; and the storage module is used for data storage and model training. Through dynamic multi-physical coupling modeling, the influence of optical distortion, speed fluctuation and vibration interference on size detection is comprehensively considered. Through a distributed optimization algorithm and a real-time feedback control mechanism, various errors in a dynamic environment are effectively compensated, the size detection precision reaches the micron level, a high-speed sensor and an industrial camera module are adopted for data acquisition, a detection algorithm is optimized through a distributed parallel computing technology, and the size detection precision is improved. And the response time of the system is controlled within milliseconds.

The invention discloses an automobile part grinding control system, which relates to the technical field of automobile part grinding control, and ensures that a grinding tool always keeps an optimal focal length and an accurate position in an operation process by accurately controlling a first focusing instruction, a first translation instruction and a first rotation instruction. A strain sensor is introduced to monitor the deformation of the workpiece in real time, and the deformation can be found in time and compensated in real time in the grinding process. The system can optimize temperature control management for different workpiece materials by considering heat conductivity coefficients k and heat conduction factors Rczz of different materials. Multiple factors of stress distribution, heat conduction, cooling efficiency and surface smoothness are considered by integrating the grinding quality index Mzqs, the machining quality grade is generated after comprehensive evaluation is provided for the grinding quality, parameters including the grinding depth, the workpiece feeding speed and the cooling system are adjusted according to the grade result, and therefore the machining quality of the final workpiece is improved.

The invention discloses an application method and system of intelligent electromagnetic simulation data, and relates to the technical field of data processing. The method comprises the following steps: step 1, constructing a virtual mirror image electromagnetic space of a multi-source electromagnetic space; in the virtual mirror image electromagnetic space; calculating the difference between the characteristic decomposition result and the simulation characteristic decomposition result; 2, a test target object is placed in the multi-source electromagnetic space, and a multi-layer electromagnetic scattering interface is arranged around the test target object by taking the test target object as the center; calculating an interface propagation characteristic coefficient of the multi-source electromagnetic space according to the electromagnetic scattering characteristic; and step 3, calculating the corrected space-time electromagnetic field tensor at each time and each position in the multi-source electromagnetic space. According to the method, the high-precision space-time electromagnetic field tensor is generated through the technologies of virtual mirror image electromagnetic space construction, characteristic decomposition correction, multi-layer interface propagation modeling and the like.

The invention relates to the technical field of contact pin type contour measurement sensor measurement, in particular to an automatic compensation mechanism and method for a contact pin type contour measurement sensor. The automatic compensation mechanism comprises a measuring rod, a measuring needle is arranged at the front end of the measuring rod, the tail end of the measuring rod is connected with a main shaft through an adapter block, the side, away from the adapter block, of the main shaft is connected with a first rotation center, the main shaft can rotate around the first rotation center, and the first rotation center is configured to be capable of translating in the measurement advancing direction. The mechanical compensation assembly comprises a second rotation center and a connecting rod, one end of the connecting rod is hinged to the spindle, and the other end of the connecting rod is hinged to the second rotation center. The invention aims to solve the problem that the measurement precision is reduced due to measurement errors introduced when a traditional contact pin type contour measurement sensor performs wide-range measurement.

The application provides a closed-loop control integral system with amplitude compensation function, mainly comprising a non-ideal integrator, a gain-variable amplifier and a control signal generator; the non-ideal integrator receives a Rogowski coil output signal and performs integral operation on the signal to suppress integral overflow caused by interference direct current; after receiving a control signal generated by the control signal generator, the gain-variable amplifier performs amplitude gain adjustment on the output signal of the non-ideal integrator based on the control signal to compensate amplitude gain error caused by temperature drift and time drift of the non-ideal integrator; the control signal generator collects various electrical parameters of the Rogowski coil output end and combines various electrical parameters of the output signal of the gain-variable amplifier to generate a control signal for gain adjustment control of the gain-variable amplifier. By implementing the application, errors caused by device temperature drift and aging can be compensated in real time, and the application has the advantages of high measurement accuracy, low cost and more stable performance.

The utility model discloses a kind of air-tight detection structure, positioning device of component processing, wherein, a kind of air-tight detection structure, include: fixed sleeve, the top of fixed sleeve is equipped with locating groove, the both sides of fixed sleeve are equipped with limit slot;Positioning rod, positioning rod is inserted in locating groove;Spring, spring is arranged between the bottom end surface of positioning rod and locating groove;Positioning block, positioning block is sleeved on positioning rod, and the top of positioning block is equipped with locating face;Air-tight detection hole, air-tight detection hole is set on positioning block;Connecting piece, connecting piece is through positioning block, limit slot and fixed sleeve, and connecting piece is connected together with positioning block and fixed sleeve.The utility model uses the support positioning with spring buffer, and error caused by processing or installation can be effectively compensated.The success rate of accurate positioning of finished part and air-tight detection effect is improved.

The invention relates to the technical field of impurity detection, and discloses a method for determining impurity elements in hafnium oxide, which comprises the following steps: S1, preparing a hafnium oxide sample solution to be detected; s2, establishing a standard curve of each impurity element to be detected; s3, determining the detection precision of the instrument; s4, verifying the accuracy of the test result and the stability of the test method; and S5, respectively calculating the concentration of each impurity element to be detected in the hafnium oxide sample according to the signal intensity of each impurity element to be detected and the corresponding standard curve. According to the technical scheme, the defects of the existing detection technology in the aspect of detection of impurity elements B, P and U in hafnium oxide can be overcome, and high-accuracy detection of the impurity elements B, P and U in hafnium oxide is realized.

The application relates to the technical field of radio frequency microwave devices, in particular to a W-waveband wide-frequency RF MEMS multi-blade multi-pole switch which comprises a silicon substrate, a plurality of input / output ports and a MEMS cantilever beam switch unit, the MEMS cantilever beam switch unit is provided with a driving electrode, and the communication and disconnection of the radio frequency signal path between the corresponding input port and the output port can be controlled by applying voltage to the driving electrode. The application realizes the on-off of the radio frequency signal path by electrostatic driving control of the deformation of the cantilever beam, and the driving mode has the advantages of low power consumption, high speed and easy integration. Compared with the common single-blade structure, the application can realize more complex signal routing in a compact unit, improves the system integration and functional flexibility, realizes interference-free crossing by using the slot structure through the horizontal swing type structure and the vertical lifting type structure, significantly reduces the high-frequency parasitic effect, and ensures the transmission quality of the millimeter wave signal in the W waveband.

The invention discloses a temperature self-compensation two-dimensional material resonance MEMS pressure sensor which comprises a silicon pressure sensitive film, a two-dimensional material pressure sensitive film, a two-dimensional material temperature compensation film, a glass sealing cover and a glass capillary tube. The upper surface of the silicon pressure sensitive film is provided with two blind holes for placing the two-dimensional material pressure sensitive film and the two-dimensional material temperature compensation film respectively; a deep cavity used as a pressure sensitive area is etched on the lower surface; the two-dimensional material pressure sensitive film is used as a pressure sensitive harmonic oscillator after being subjected to vacuum packaging, is sensitive to pressure and temperature changes at the same time, and is connected with one or more two-dimensional material pressure sensitive film detection optical fibers; the two-dimensional material temperature compensation film is arranged at the edge position of the upper surface of the silicon pressure sensitive film and is connected with one or more two-dimensional material temperature compensation film detection optical fibers; the glass sealing cover is used for providing a vacuum environment; the glass capillary is used for fixing the two-dimensional material pressure sensitive film detection optical fiber and the two-dimensional material temperature compensation film detection optical fiber. The invention further discloses a corresponding measuring method and a preparation method.

The present invention discloses an electric vehicle battery pack installation and fastening mechanism and an electric vehicle, belonging to the technical field of electric vehicles: comprising a shell, a rotating lock block and a locking block, the battery pack is provided with a locking protrusion extending laterally, the rotating lock block is hinged to the shell, and is provided with a locking inclined surface; when the locking block puts the rotating lock block in a locked state, the locking inclined surface extends laterally outside the shell and is connected to the locking protrusion; when the locking block puts the rotating lock block in a released state, the locking inclined surface shrinks into the shell and disengages from the locking protrusion. The locking block of the present invention comprises a locking spring and a spring bracket arranged inside the locking spring, the locking spring can play a role of buffering and shock absorption, and compensate for dimensional errors to a certain extent. When multiple rotating lock blocks are used to lock the battery pack, and after repeated friction loss between the rotating lock block and the locking protrusion, the relative position of the rotating lock block and the locking protrusion can be automatically adjusted, so that the multiple rotating lock blocks are subjected to uniform force to a certain extent.

This utility model relates to the field of hydraulic transmission equipment technology, specifically to a composite dual-turbine hydraulic torque converter, comprising a dual-turbine hydraulic torque converter body, an input shaft disposed at the input end of the dual-turbine hydraulic torque converter body, and an output shaft disposed at the output end of the dual-turbine hydraulic torque converter body. Both the input and output shafts are fitted with sealing sleeves, which are detachably mounted on the dual-turbine hydraulic torque converter body. A rigid clamping ring is disposed inside the sealing sleeve and fitted onto the corresponding shaft. An inner sealing ring is disposed between the rigid clamping ring and the front cylindrical body of the sealing sleeve. An inner bushing is disposed on the rear side of the rigid clamping ring. Inner fitting gaskets are disposed on both the inner and outer end faces of the inner bushing. The inner fitting gasket on the inner side fits onto the corresponding shaft, and the inner fitting gasket on the outer end face abuts against the rear side of the rigid clamping ring. This utility model has good sealing performance, achieving the effect of improving sealing reliability and ensuring stable equipment operation.

The invention discloses an operation quality evaluation method, device and equipment based on Beidou positioning, and a storage medium, and relates to the technical field of Beidou navigation and Internet of Things data fusion, and the method comprises the steps: carrying out the time sequence alignment processing of Beidou positioning terminal track data, the facility state data of Internet of Things sensor nodes, and mobile terminal image data, the aligned multi-modal data is obtained; extracting a space-time distance value between each track point in the track point position sequence data of the positioning terminal and each facility coordinate in the geographical coordinate set data of the facility from the aligned multi-modal data; determining associated facility data corresponding to each trajectory point according to the space-time distance value, and constructing a space-time constraint model of the trajectory and the facility point location according to the associated facility data; quantitative evaluation is carried out on the quality of the mobile supervision object based on the space-time constraint model, a space-time correlation evaluation result is obtained, and the space-time matching precision and correlation analysis efficiency of the Beidou positioning terminal and the Internet of Things facility in a complex urban environment are improved.

The invention relates to the technical field of pressure sensor testing, in particular to an omnidirectional automatic testing device applied to a pressure sensor, which comprises a main frame. According to the omni-directional automatic testing device applied to the pressure sensor, full-automatic operation of testing of the pressure sensor is achieved, automatic feeding, clamping positioning and discharging sorting of the sensor are completed through cooperation of the longitudinally-arranged feeding pipe, the guide control frame controlled by the electric control lead screw and the classified discharging channel, manual intervention is not needed in the whole process, and the testing efficiency is improved. The test efficiency is greatly improved, meanwhile, errors caused by manual operation are avoided, and the test consistency is ensured; the all-directional pressure measuring module has the all-directional multi-dimensional pressure measuring capacity, the detachable all-directional pressure measuring module comprises multiple sets of annular detection heads, pressure testing of different angles and different areas can be carried out on the pressure sensors, the all-performance detection requirements of various pressure sensors are met, and the detection heads are detachable, convenient to replace and maintain and suitable for testing of sensors of different specifications.

The invention discloses a dry-hanging assembly, a dry-hanging structure and a construction method of a building ceramic plate curtain wall, and relates to the field of curtain wall structures. The building ceramic plate curtain wall dry-hanging assembly includes a longitudinal keel, a horizontal beam, a right-angle bracket, a hook, a loose-locking bolt and a back bolt, and a threaded connection hole is provided on the back bolt, and the loose-locking bolt passes through the hook and is threadedly fixed with the threaded connection hole. A building ceramic plate dry-hanging assembly is provided, which is convenient to connect and assemble by arranging a loose-locking bolt and a back bolt, fixing the back bolt with the plate to be hung, and then connecting the back bolt with the loose-locking bolt; a building ceramic plate curtain wall dry-hanging structure is provided, which has low requirements for the grooving and hole-opening processing of the ceramic plate body, is conducive to maintaining the overall strength balance of the ceramic plate body, and the dry-hanging structure is convenient and quick to assemble, and the dry-hanging structure after construction is stable and has high strength; a construction method of a building ceramic plate curtain wall dry-hanging structure is provided, which is convenient and quick to construct.

The present invention discloses an injection mold of an integrated plug in the field of injection mold technology, comprising an ejector plate, an ejector, a first sleeve, a second sleeve, a push rod, a first elastic rubber pad, a second elastic rubber pad, and a panel, a runner plate, a front template, a rear template, a square iron block and a bottom plate arranged in sequence from top to bottom; the front template is fixed with a front mold core, the rear template is fixed with a rear mold core, the front mold core and the rear mold core are arranged opposite to each other and form a cavity; the second sleeve is sleeved on the outside of the first sleeve, the push rod is sleeved in the first sleeve, the bottom end of the second sleeve abuts against the second elastic rubber pad, and the bottom end of the first sleeve abuts against the first elastic rubber pad; a protrusion is provided on the upper periphery of the second sleeve. During injection molding, the rebound force of the first elastic rubber pad and the second elastic rubber pad causes the protrusions of the first sleeve and the second sleeve to be pressed upwards against the corresponding positions of the metal parts, so that the injection molding colloid will not block and cover the corresponding end faces of the metal parts, thereby ensuring the injection molding quality of the product and improving the yield of the product.

This invention discloses a process-in-the-loop (CNC) device and method, belonging to the field of CNC technology. It includes a non-real-time process optimizer, which uses a deep learning-based trajectory error prediction model to optimize the process of the user-input raw trajectory data, effectively compensating for comprehensive errors generated during multi-axis machining. An interpolator and position controller are used to calculate the coordinates of the intermediate points of the motion trajectory and precisely control the tool to reach the target position. A process prediction observer utilizes neural network technology to construct a dynamic observer for real-time feedforward compensation during machining. A physical machine tool performs the machining operation. This invention employs the aforementioned process-in-the-loop CNC device and method, adding a non-real-time process optimizer and a process prediction observer. Through deep fusion prediction, optimization, and dynamic closed-loop control of the machining process using virtual machine tool simulation and physical machine tool feedback, it optimizes the machining trajectory in real time and compensates for errors.

The present invention discloses a method and system for compensating the estimated position error of a rotating high-frequency injection method, and belongs to the technical field of motor control. The motor rotor position obtained by the rotating high-frequency injection method is compensated for the phase shift caused by the non-ideal factors of the inverter and the inherent phase shift of the rotating high-frequency injection method algorithm, so as to obtain the rotor position actually input into the motor closed-loop control system. The present invention can conveniently calculate the phase shift of the high-frequency current caused by the non-ideal factors of the inverter by extracting the form of the high-frequency positive sequence component of the current generated by the injected high-frequency voltage in the high-frequency synchronous rotating coordinate system, and compensate for the error of the rotor position obtained by the rotating high-frequency injection method, so that the error approaches zero.

The invention relates to the technical field of power supply or distribution circuit devices or systems and electric energy storage systems, in particular to a novel power system dispatching optimization method integrating renewable energy sources. The technical problem that prediction precision and reliability of an existing method are difficult to meet actual requirements of power grid refined scheduling is solved. The method comprises the following steps: determining a first target value among various environmental data based on first data at a first time point; the first target value is used for representing relevance among various environmental data; determining a second target value among the various environmental data based on the first target value, a fluctuation variable of the first environmental monitoring value at the second time point and a power variable of the first power generation power at the second time point; the second time point is a time point when the first generated power fluctuates; determining predicted power generation power of the target time point based on the first data, the second target value and a second environment predicted value of the target time point; the method is used for a power system dispatching optimization scene.

The present invention discloses an adaptive boundary anti-disturbance vibration reduction control method for a flexible manipulator system, which belongs to the field of flexible manipulator vibration suppression. First, the Hamilton principle is used to model the flexible manipulator system as a distributed parameter system; the input saturation and dead zone problems are transformed into new saturation problems, and an auxiliary system is designed to forward compensate the difference between the control input and the actuator output; the composite influence of matching and non-matching interference on the distributed parameter system is compensated by designing an adaptive law; the Lyapunov direct method is used to combine the barrier Lyapunov function to propose an adaptive boundary controller, and the system stability is proved. Under the action of the proposed control scheme, the slope of the angular displacement tracking error of the flexible manipulator and the arm end deflection is limited to a safe range, and the angular displacement tracking error and the arm deflection can converge to a small neighborhood of zero, thereby realizing the angular displacement tracking and anti-disturbance vibration reduction control of the flexible manipulator system under constraints.

The utility model relates to the technical field of printing, and discloses a multilayer printing cylinder device capable of improving printing ink adhesion uniformity, which comprises a bottom plate, the top end of the bottom plate is fixedly connected with a fixing plate, the inside of the fixing plate is fixedly connected with a hydraulic cylinder, the driving end of the hydraulic cylinder is fixedly connected with a sealing box, and the sealing box is fixedly connected with the bottom plate. A first motor is fixedly connected to the interior of the sealing box, a first limiting wheel is fixedly connected to the driving end of the first motor, a belt is arranged in the first limiting wheel in a sleeved mode, a second limiting wheel is rotatably connected to the inner wall of the sealing box, and a first connecting rod is fixedly connected to the interior of the second limiting wheel. The outer side of the first connecting rod is fixedly connected with a pressure roller. According to the utility model, by adjusting the pressure roller, the pressure between the printing cylinder and the material can be accurately adjusted according to the characteristics of the specific material, and the pressure can be increased for the thicker or higher-hardness material so as to ensure that the ink is fully transferred.

The utility model discloses an anti -deformation's air cooler protection net shell support relates to protection net shell support technical field, including the fixed support of fixed on the wall, the fixed support front side bottom is equipped with the main support, and the air cooler is located the inside top of main support, the fixed support front side with the both sides of main support all are connected through anti -deformation subassembly, is used for reducing the impact force of external force impact main support, plays the buffer protection, the inside of main support is equipped with two adjusting assembly, is used for supporting the air cooler of different size size, the anti -deformation subassembly includes the hinge seat. The utility model passes through the vibration energy of first damping spring and second damping spring self -deformation absorption, significantly reduces the impact force of external force impact the utility model, realizes the buffer protection, avoids the loosening of continuous vibration, deformation or fatigue fracture, thereby guarantees the durability and safety of structure simultaneously, has optimized the stability of air cooler operation.

The invention discloses a full-temperature calibration compensation method and system for an IMU acceleration channel. Firstly, a three-input variable-temperature calibration method is adopted to realize zero offset and scale factor temperature compensation of an IF / VF quantization plate; secondly, for the collected accelerometer data subjected to IF / VF quantization plate temperature compensation, adopting a three-position variable temperature calibration method to realize zero offset and scale factor temperature compensation of the accelerometer; and finally, aiming at the collected acceleration channel data after IF / VF quantization plate temperature compensation and accelerometer temperature compensation, adopting a multi-position method to realize constant temperature calibration compensation of the acceleration channel. On one hand, acceleration full-temperature calibration compensation can be completed by adopting low-configuration calibration equipment under the condition of a calibration environment with relatively simple function configuration, so that the cost is reduced; on the other hand, it can be guaranteed that the calibration compensation precision of IMU acceleration is high, and the precision requirement of a conventional navigation control system is met.

Embodiments of the disclosure relate to a method, a computer program product, and an apparatus for operating a vehicle. The invention relates to a method for operating a vehicle, in particular a motor vehicle, having at least one first and one second actuatable actuator, which influence the yaw behavior of the vehicle when necessary. The method comprises the following steps: determining a driving condition of the vehicle according to a dynamic indicator; dividing a yaw moment required to influence the yaw behavior into at least one first yaw moment for a first actuator and a second yaw moment for a second actuator according to the driving situation; and calculating a first setup specification for the first actuator in order to induce the first yaw moment, and calculating a second setup specification for the second actuator in order to induce the second yaw moment.

The utility model belongs to the technical field of constructional engineering, and particularly relates to a fair-faced concrete decorative plate mounting structure, a vertical rod and a transverse rod both adopt modular design, the size and the shape of the mounting structure can be easily adjusted according to actual requirements through a splicing mode of a groove and a convex block, a locking piece can be quickly clamped into a vertical hole, and the mounting structure is convenient to use. By means of the design, the installation time is greatly shortened, the installation efficiency is improved, through double fixation of the upper clamping blocks and the locking pieces, rapid installation of the decoration plate body is achieved, stability and reliability after installation are guaranteed, meanwhile, complex tools and steps are not needed in the whole installation process, and the installation cost is reduced. The installation difficulty and the labor cost are reduced, and the design that most components of the installation structure are hidden behind the decorative plate enables the surface of the decorative plate to be simple and attractive.

The invention relates to the technical field of machine vision detection, and discloses a display screen dead pixel detection method based on morphological characteristics and geometric calculation. The method comprises the steps of collecting a grayscale image of a display screen; self-adaptive image preprocessing enhancement is carried out on the image, and the process comprises self-adaptive brightness contrast global calibration, local brightness compensation and equalization and self-adaptive segmented enhancement based on bright spot density analysis; then robust geometric feature extraction and correction are carried out on the preprocessed image, and the contour, the center point coordinate and the rotation angle of the screen are obtained; and finally, based on the geometric features, performing intelligent grid reconstruction and fault-tolerant analysis, and generating a dead pixel detection result of the display screen. According to the method, false detection and missing detection caused by shooting condition differences, screen geometric deformation and background interference can be overcome, and high-precision and high-robustness automatic dead pixel detection is realized.

The invention relates to the technical field of detection by using optical means, in particular to an MEMS optical fiber pressure sensing probe with an environment compensation function, which comprises a light emitting part, an optical fiber grating sensor body, a photoelectric detector and a compensation part, and is characterized in that the compensation part comprises an environment parameter detection module and a data processor; the environmental parameter detection module obtains environmental parameters in a target time period, and the data processor obtains interference influence of the environmental parameters on a detection result; according to the actual Bragg wavelength and the original Bragg wavelength of the fiber bragg grating sensor body, the curve characteristics before and after the actual Bragg wavelength in the spectrum curve and the interference influence, the interference degree of the fiber bragg grating sensor body to the environmental parameters is obtained; according to the interference influence and the interference degree, the compensation parameter is obtained, so that the spectrum curve is compensated, the influence on environmental factors in the pressure detection process is completed, and the accuracy and credibility of a pressure detection result are effectively improved.

The invention discloses a super capacitor health state monitoring method, which comprises the following steps of: if a preset condition is met, continuously performing online monitoring on the health state of a super capacitor in the current month, updating the health state SOH of the current month according to the most accurate health state, and synchronously calculating the health state SOH offline in an offline state by using an empirical model. When the SOH is in the corrected off-line state, the SOH is off-line, and a conversion factor is calculated; if the preset condition is not met, off-line monitoring is carried out on the health state of the supercapacitor in the current month, the SOH off-line state is calculated by using an empirical model, the SOH off-line state is corrected by using a conversion factor and a weight, and then the SOH off-line state of the supercapacitor in the current month is updated by using the corrected health state; the preset condition is set as follows: the number of times of online monitoring is greater than or equal to a first set value and the error of each health state is less than or equal to a second set value.

The invention relates to the technical field of garment patch thermoprinting, and discloses a garment patch thermoprinting machine with high material placing precision. Comprising a machine body and a control software system arranged in the machine body and used for automatically controlling any combination of patches, the surface of the machine body is fixedly connected with a top plate, the upper surface of the top plate is provided with a material placing positioning camera, the inner top wall of the top plate is fixedly connected with a mechanical arm, and the output end of the mechanical arm is fixedly connected with a clamp suction cup. The material taking and positioning camera can shoot pictures of patches in the stock bin, the position adjusting requirement of the stock bin can be lowered through the visual positioning function of the material taking and positioning camera, the material placing and positioning camera shoots garment pieces, marks and patches placed on the table plate, and the patches are placed on the table plate. The placement positioning camera can shoot marks on the garment pieces to determine the placement positions of the patches, and meanwhile, after the patches are placed, whether the placement positions of the patches are accurate or not can be ensured.