The core technologies of dispensing machines involve multiple aspects, including mechanical structure design, motion algorithms, and image vision, aiming to achieve precise volume control and positioning during dispensing.
Precision motion control technology employs a high-precision multi-axis synchronous control architecture, achieving high-precision synchronization and positioning of multiple axes through high-speed industrial buses such as EtherCAT. Core motion axes are typically driven by servo motors or linear motors, coupled with high-precision ball screws or direct-drive modules.
Intelligent calibration and detection technologies include automatic calibration functions, using laser displacement sensors in conjunction with industrial cameras to scan markings and complete precise calibration of the equipment coordinate system. Integrated vision systems are widely used for workpiece positioning and automatic inspection of adhesive path quality. During in-flight dispensing, triggered laser altimeters can be used to acquire product height values in real time and dynamically lock the Z-axis height.
Advanced algorithms and error compensation technologies involve the evaluation and compensation of dynamic and static errors of the dispensing machine. Dynamic errors can be optimized by identifying the rotational inertia of the servo motor and performing controller parameter self-tuning through algorithms such as model reference adaptation. Static geometric errors can be measured and identified using precision instruments such as a double ballbar, and a spatial error model can be established for algorithmic compensation. Simultaneously, a velocity look-ahead algorithm is used to smooth the trajectory of small line segments and optimize the acceleration and deceleration process. Furthermore, position-based real-time level triggering technology is applied to improve the positional accuracy of the dispensing dots.
The core control system is the "brain" of the dispensing machine, responsible for coordinating all actions. A complete control system typically includes a core controller, dispensing volume controller, human-machine interface, actuator drive, sensing and feedback loops, etc., achieving core functions such as precise motion control, accurate metering control, trajectory synchronization, and speed control.
