Application case of integrated screw stepper servo motor in cell counting analysis equipment
Cell counting and analysis equipment is used to accurately count and analyze cell samples. A Beijing-based biotechnology company specializes in biotechnology research and development, particularly in cell analysis. During an equipment upgrade, they discovered that the original drive system lacked precision and stability, impacting the accuracy of cell counting. Therefore, they decided to introduce an integrated lead screw stepper servo motor to improve the overall performance of the equipment.
1. Select model and function
Core Model: STM2834B-485-M-1ZB-6-1-L24-Y
Key Features:
• Home Position Mode: Ensures the motor returns to the preset starting position before each run, providing an accurate starting point for cell counting.
• Contour Position Mode: Precisely controls the motor's position and speed, enabling precise positioning and movement of cell samples within the device, improving counting accuracy.
2. Application Solution
The company applied an integrated lead screw stepper servo motor to the drive system of a cell counting and analysis instrument. The specific solution is as follows:
1. System Integration:
The STM2834B-485-M-1ZB-6-1-L24-Y motor was integrated with the instrument's control system, enabling data transmission and command control via the RS-485 communication protocol.
2. Drive Control:
The motor's home position mode ensures that the sample stage accurately returns to its starting position before each count, providing a stable baseline for subsequent cell counts.
The contour position mode precisely controls the trajectory and speed of the sample stage within the instrument, enabling precise cell positioning and counting.
3. Troubleshooting and Upgrade:
During initial application, it was discovered that the motor occasionally stopped moving after reaching a limit in contour position mode. After communicating with the company's technical team, it was determined to be a firmware issue.
After upgrading the motor's firmware, the issue was resolved, and the motor now operates stably, meeting the high-precision requirements of the cell counting and analysis instrument.
3. Application Results
1. Improved Counting Accuracy: The introduction of an integrated lead-screw stepper servo motor significantly improved the counting accuracy of the cell counting and analysis equipment, reducing the error rate to 50%.
2. Enhanced Operational Stability: The motor operates smoothly without jitter or abnormal noise, improving the overall stability and reliability of the equipment.
3. Reduced Maintenance Costs: The integrated stepper servo motor's compact structure and low failure rate reduce the frequency and cost of equipment maintenance.
4. Case Summary
The introduction of an integrated stepper servo lead-screw motor successfully improved the overall performance of the cell counting and analysis equipment. Through system integration, drive control solution design, and the implementation of troubleshooting and upgrade measures, high cell counting accuracy and stable operation were achieved. This case study provides a valuable technical solution for the biotechnology field and fully demonstrates the technical advantages and application value of integrated stepper servo motors in complex medical equipment applications.
Advantages of integrated stepper/servo motor
High integration improves the portability of equipment: The integrated stepper servo motor integrates functional modules such as stepper motor, servo driver, encoder and controller, which greatly reduces the size and weight of the equipment. At the same time, it simplifies system wiring and reduces potential failure points.
Flexibility to meet diverse needs: The integrated stepper servo motor supports CANopen/Modbus communication and can be flexibly controlled and adjusted as needed to adapt to different work requirements.
High-precision positioning improves measurement accuracy: The integrated stepper servo motor has high positioning accuracy and can achieve high-precision positioning of mobile equipment.
Multiple control modes: support PP, VM, PV, PT, HM, IP, CSP, CSV, CST standard modes; support NiMotion position mode, NiMotion speed mode, NiMotion torque mode.
High-speed response improves equipment efficiency: The integrated step servo motor has a fast response speed and can quickly adjust the angle and position of the detection equipment. This means that the detection unit can obtain sample information more quickly, improving the working efficiency and responsiveness of the equipment.
Complete alarm function: The integrated step servo motor can detect hardware failures in time to avoid affecting system operation. It is equipped with multiple safety protection functions. The LED flashing alarm can intuitively display the current status of the motor. It also has protection functions such as overvoltage/undervoltage, overheating, overcurrent, and stall alarm.