该升降机的控制系统采用什么技术？

How to draw a ball screw in Taichung in English: 1. Start by drawing a horizontal line to represent the base or bed of the machine or equipment where the ball screw will be installed. 2. Draw a vertical line at the center of the base line to represent the axis or centerline of the ball screw. 3. Draw a circle at the top of the vertical line to represent the ball nut, which is the component that houses the balls that roll along the screw shaft. 4. Draw a screw thread around the vertical line, starting from the bottom and going up towards the ball nut. The screw thread should be spiraled around the vertical line and should have a constant pitch or distance between each thread. 5. Draw a set of balls inside the ball nut, arranged in a circular pattern and evenly spaced apart. The balls should be in contact with the screw thread and should be able to roll freely along the shaft. 6. Draw two end supports or bearings at each end of the ball screw, which are used to support and guide the screw shaft. The end supports should be cylindrical in shape and should have mounting holes for attaching to the machine frame. 7. Finally, add any additional details or features such as seals, lubrication ports, or covers to complete the drawing.