Application of integrated brushless motor in automatic sampling transdermal diffusion system

In the fields of drug development and cosmetic testing, the application of transdermal diffusion systems is of great importance. Automated sampling transdermal diffusion systems provide researchers with an accurate and effective testing method by simulating the penetration process of drugs or cosmetics through the skin. With technological advancements, integrated brushless motors, offering high efficiency, low noise, and long service life, have been widely applied in automated sampling transdermal diffusion systems.

01. Equipment Introduction

An automated sampling transdermal diffusion system is a device used to simulate the penetration process of drugs or cosmetics through the skin. Through functions such as high-precision sampling, heating, stirring, and bubble removal, the system achieves accurate measurement of transdermal release of drugs or cosmetics.

The system typically consists of the following components:

• Diffusion Cells: Used to place skin samples and drug formulations to simulate the transdermal absorption environment.

• Sampling Device: Automatically samples and collects sample solutions through sampling needles.

• Heating and Stirring Device: Maintains a constant temperature in the diffusion cells and promotes uniform distribution of the drug in the medium through stirring.

• Control System: Controls the operation of the entire system, including sampling, heating, stirring, and other processes.

Integrated Brushless Motor Structure Description

An integrated brushless motor is a highly integrated servo system that combines a brushless motor, encoder, and driver into a single unit. Compared with traditional separate brushless motors, integrated brushless motors are significantly smaller in size and require fewer cable connections, making the entire servo system more compact and easier to install into equipment, especially those with limited internal space. The built-in encoder monitors the motor's rotation angle in real time, ensuring that the required position is achieved and maintained.

Using integrated brushless motors in automated sampling transdermal diffusion systems makes the entire system more compact and integrated. At the same time, their high efficiency, low noise, and high precision ensure the accuracy and reliability of sampling, heating, stirring, and other processes, making the equipment operation more stable and efficient.

02. Solution Example

In the automated sampling transdermal diffusion system, an integrated brushless motor is used to drive the "sampling device" to rotate, allowing the sampling needle to reach a "vertical" or "inclined" position, thereby enabling automatic cleaning, automatic sampling, automatic sample collection, and automatic medium replenishment.

The integrated brushless motor drives precision gears through direct connection, and uses the motor's position mode to precisely convert the motor's rotational motion into the linear or rotational motion required by the needle, achieving precise control of the needle at 90° and 45°.

• Motor Model: BLM42 Integrated Brushless Motor

• Control Mode: Profile Position Mode

Advantages of Integrated Brushless Motors

• High integration improves equipment portability: Integrates brushless motors, servo drivers, encoders, and controllers into a single unit, significantly reducing equipment size and weight while simplifying wiring and reducing potential failure points.

• Flexibility to meet diverse needs: Supports CANopen/Modbus communication, allowing flexible control and adjustment according to different work requirements.

• High-precision positioning improves measurement accuracy: High positioning accuracy enables precise positioning of mobile equipment.

• Multiple control modes: Supports PP, VM, PV, PT, HM, IP, CSP, CSV, CST standard modes, as well as NiMotion position mode, speed mode, and torque mode.

• High-speed response improves equipment efficiency: Fast response speed enables quick adjustment of equipment angle and position, improving work efficiency.

• Comprehensive alarm function: Power-on self-diagnosis can detect hardware faults in a timely manner; equipped with multiple safety protection functions including overvoltage/undervoltage, overheat, overcurrent, and stall alarms. LED flashing alarm intuitively displays the current status of the motor.