Testing instrument for dynamic virtual power of spindle

Abstract

A testing instrument for a dynamic virtual power of a spindle belongs to the industry of textile machinery special part manufacturing and aims at applying technologies of laser speed metering, dynamic torque testing, frequency conversion driving, automatic loading and load limiting of a stepping motor, real-time close-loop testing and control of a microcomputer, a virtual instrument, an RS485 / RS232 interface, an ModBus serial port communication and mechatronics in the technical field of spindle testing. The testing instrument is composed of a variable frequency motor driving mechanism, a dynamic torque sensor, a variable frequency motor driving lifting mechanism, a spindle installation moving mechanism, a stepping motor automatic loading and load limiting mechanism, a laser speed sensor testing mechanism, a driving control module, a data acquisition module, a data processing, displaying and file storing module and a laboratory virtual instrument engineering workbench (LabVIEW) front panel. By means of modular design, the testing instrument is simple in structure, high in testing accuracy, long in service life, high in automation degree and efficiency, and capable of real-timely performing dynamic testing and directly displaying the dynamic power curve of the spindle.

Description

technical field [0001] The invention belongs to the manufacturing industry of special parts of textile machinery and applies laser speed measurement, dynamic torque test, frequency conversion drive, stepper motor automatic loading and unloading, microcomputer real-time closed-loop measurement and control, virtual instrument, Modbus serial port communication, and electromechanical integration technology to the technical field of spindle testing The special equipment for dynamic power test is a dynamic virtual power tester for spindles. Background technique [0002] Spindle is a special part of textile machinery that rotates at high speed on the spinning frame of the textile industry. There are hundreds of millions of spindles in operation across the country. It is the pursuit of textile machinery manufacturing and textile enterprises to develop and adopt high-speed and energy-saving spindles. Fair, scientific and accurate evaluation of the energy consumption of the spindle, ...

AI Technical Summary

Problems solved by technology

[0004] The above method requires manual debugging and manual calculation, because multiple corresponding data need to be read. For example, after reading the drive speed parameters manually and then reading the torque parameters, the previously read speed parameters have changed, that is, the real-time data of manual sampling poor sex

There are repeated debugging, low precision, large drift, low efficiency, large system error, poor repeatability and stability of measurement results

The industry comparison test error is nearly 15%-20%, and it is impossible to provide the dynamic power curve of the spindle (that is, the curve of the spindle power changing with the spindle speed)

[0005] In addition, there is still the defect of not adjusting the height of the spindle installation center. For spindles with different installation heights, it can only be solved by adding or subtracting spacers

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