Voltage level shift stageAs a nanoscale precision displacement device, its positioning accuracy will gradually shift with usage time and environmental changes. Scientific calibration cycles and professional calibration methods are key to ensuring its performance. ​

The setting of the calibration cycle needs to be combined with the usage scenario and work intensity. In the scenario of low-frequency laboratory use (less than 2 hours per day), calibration can be performed every 6 months; High frequency applications such as industrial production lines (>8 hours per day) need to be shortened to 3 months. If the equipment is in harsh environments (such as high temperature, high vibration), or used in ultra high precision scenarios such as semiconductor lithography, the calibration cycle needs to be compressed to 1-2 months. In addition, when there is abnormal noise or positioning deviation exceeding the limit of the translation stage, it is necessary to immediately stop the machine for calibration to avoid affecting the experimental or production accuracy. ​

The professional calibration method focuses on the calibration of laser interferometers. This method uses a wavelength stable helium neon laser (wavelength 632.8nm) as a reference, reflects the laser beam through a translation stage mirror, and forms interference fringes with the reference beam. The actual displacement is calculated by counting the fringes. The calibration steps include: first, fix the translation stage on the shockproof platform, preheat for 30 minutes to stabilize the equipment temperature; Then evenly select 5-7 calibration points within the travel range, send displacement commands point by point, and record the measured values of the laser interferometer; Finally, calculate the positioning error and repeated positioning error of each point to generate a calibration curve. For a multi axis translation stage, it is necessary to calibrate the X, Y, and Z axes separately, and at the same time detect the perpendicularity error between the axes (which should be ≤ 10 μ rad). ​

For nanoscale precision calibration, a laser Doppler vibrometer can be used. It calculates displacement by measuring the frequency offset of reflected light, with a resolution of up to 0.1nm, suitable for detecting the micro step accuracy of piezoelectric translation stages. In dynamic calibration, it is necessary to test the displacement response at different frequencies (usually 1-1000Hz) to ensure that the translation stage maintains stable accuracy during high-frequency motion. ​

The processing of calibrated data is equally important. By comparing the measured values with the theoretical values using specialized software, compensation parameters are generated and written into the translation stage control module to achieve error correction. The calibration report needs to record detailed parameters such as environmental temperature, humidity, and air pressure, providing a basis for subsequent accuracy traceability. ​

Combining regular calibration with scientific maintenance can enableVoltage level shift stageLong term maintenance of nanometer level positioning accuracy, providing reliable displacement control guarantee for precision manufacturing, quantum experiments and other fields. In practical operation, it is recommended that professional technicians use certified equipment for calibration to ensure the accuracy of the results. ​