Motor operation control system and method for a twin-screw vacuum pump
By using a servo drive control system and an adaptive synchronization algorithm, the problem of inaccurate rotor clearance control in twin-screw vacuum pumps at high speeds was solved, achieving dynamic and high-precision adjustment of the rotor clearance and ensuring high-speed and stable operation and performance improvement of the twin-screw vacuum pump.
CN122407546APending Publication Date: 2026-07-17SICHUAN LESTER VACUUM TECH CO LTD
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Patent Information
- Application Number
- CN202610658840.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-05-13
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing twin-screw vacuum pumps are prone to rotor collisions at high speeds due to inaccurate gear clearance control, which limits the improvement of pumping speed and power density.
Method used
A servo drive control system is adopted, which combines position sensors and adaptive synchronous control algorithms to detect the displacement signal of the screw rotor in real time. The rotor gap is dynamically adjusted through a driver with an FPGA+DSP hardware architecture to achieve high-precision gap control.
Benefits of technology
Precise control of the rotor gap within 1.5mm at high speeds avoids rotor collisions, ensures stable operation of the twin-screw vacuum pump, and improves pumping speed and power density.
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Figure CN122407546A_ABST
Abstract
一种双螺杆真空泵的电机运行控制系统及方法，涉及电机控制技术领域，包括双螺杆转子、驱动电机及伺服驱动控制系统；所述双螺杆转子包括两个平行设置、相互啮合的螺杆转子，两个螺杆转子与两个驱动电机一一驱动连接，且两个螺杆转子与驱动电机连接端处均设有同步转动的齿轮，两齿轮对应啮合，两齿轮的啮合齿间隙即为双螺杆转子的控制间隙；伺服驱动控制系统包括：位置传感器，驱动器和控制模块；用于解决现有技术中双螺杆真空泵在高转速下因齿轮间隙控制不精准导致转子易碰撞、无法高速稳定运行的问题。
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