High-speed industrial sewing machine servo control device and control method

Abstract

The invention provides a high-speed industrial sewing machine servo control device and a control method thereof. A high-speed industrial sewing machine is adopted as a body, a direct-current brushless motor is adopted as a servo motor, a 360-line photoelectric coded disk is arranged on a motor spindle of the high-speed industrial sewing machine, and a Hall sensor and a controller are arranged at an upper needle position and a lower needle position in a motor head. The improvement is carried out on the basis of an original high-speed industrial sewing machine, and therefore running of the sewing machine and the rotating speed function of a detecting motor are integrated, and production cost is effectively lowered. A micro control unit (MCU) is adopted as the controller and replaces the mode that a DSP is adopted as a master control chip in the past, hardware cost is lowered, and equipment has higher cost performance and reliability.

Description

Technical field [0001] The invention relates to the field of high-speed industrial sewing machine servo control, in particular to a high-speed industrial sewing machine servo control device and control method. Background technique [0002] Industrial sewing machines are suitable for sewing workpieces for mass production in sewing factories or other industrial sectors. Clothing, shoes, hats, and other factories that require sewing machines use industrial sewing machines. [0003] The high-speed industrial sewing machine uses a DC brushless motor as the servo motor. It not only has the excellent speed regulation performance of the DC motor, but also has a series of advantages such as the simple structure of the AC motor, reliable operation, and convenient maintenance; it adopts three installations in the motor at 120° The distributed Hall position sensors determine the conduction sequence of the electronic commutator and control the operation of the sewing machine. In addition, in o...

AI Technical Summary

Problems solved by technology

[0004] The existing high-speed industrial sewing machine servo control system uses a DC brushless motor as the servo motor. The operation of the sewing machine is separated from the function of detecting the motor speed, resulting in needle position errors, defective products, and as the speed increases, the probability of out-of-step The higher it is, it is not allowed for high-demand processing products; while imported products and high-speed industrial sewing machines produced by joint ventures have both speed control and position control in control, and their control strategies generally use space vector modulation for motor control , which has a large amount of calculation, and must use DSP as its main control chip to achieve high-speed calculation, resulting in high cost

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