Stepping motor driving device for nucleic acid extraction workstation and stepping motor control method for nucleic acid extraction workstation

Abstract

The invention relates to a stepping motor driving device for a nucleic acid extraction workstation and a stepping motor control method for a nucleic acid extraction workstation. The method comprises the steps: that the current position, collected by a position detection sensor, of an executing mechanism is obtained, and the error value of actual operation parameters and target operation parametersof a stepping motor corresponding to the current position, a first historical position with the preset length away from the current position and a second historical position with the double preset length away from the current position is obtained; according to the error value of the actual operation parameters and target operation parameters of the stepping motor corresponding to the current position, the first historical position and the second historical position, a preset incremental PID error calculation formula is utilized to calculate an operation parameter correction value of the stepping motor; and a stepping motor driving module drives the stepping motor to correct the working state of the stepping motor corresponding to the current position according to the correction value of the operation parameters of the stepping motor. The problem that in the nucleic acid extraction process, an existing nucleic acid extraction workstation cannot accurately send nucleic acid to a targetposition, and consequently the nucleic acid is scattered is solved.

Description

technical field [0001] The invention relates to the technical field of nucleic acid extraction equipment, in particular to a stepping motor drive device and a control method for a nucleic acid extraction workstation. Background technique [0002] Nucleic acid extraction workstation can replace manual operation to extract nucleic acid. With the development of life science field, there is great application demand. The pipette in the nucleic acid extraction workstation needs to move back and forth frequently. The stepper motor is an important driving element of the actuator in the nucleic acid extraction workstation. The actuator is driven by the stepper motor to reach the preset position, but because the actuator and the stepper motor will be mechanically displaced or deformed after a long period of use, the existing nucleic acid extraction workstation has high frequency of execution after use. The mechanism cannot accurately drive the pipette to the preset position, resultin...

AI Technical Summary

Problems solved by technology

The pipette in the nucleic acid extraction workstation needs to move back and forth frequently. The stepper motor is an important driving element of the actuator in the nucleic acid extraction workstation. The actuator is driven by the stepper motor to reach the preset position, but because the actuator and the stepper motor will be mechanically displaced or deformed after a long period of use, the existing nucleic acid extraction workstation has high frequency of execution after use. The mechanism cannot accurately drive the pipette to the preset position, resulting in the problem that the nucleic acid cannot be accurately delivered to the target position during the nucleic acid extraction process and thus spills

Images