Abstract : This paper introduces the design and analysis of a speed-controlled switched reluctance linear motor and its application in a straight-blade cutting machine. Keywords : Switched reluctance linear motor; speed control switch; design analysis 1 Introduction In garment machinery, there is a large demand for straight-blade cutting machines. It consists of a rotary motor that drives a blade in linear reciprocating motion via a crankshaft and connecting rod mechanism. This structure has drawbacks such as high precision machining of parts and high vibration and noise from the eccentric mechanism. Therefore, developing a linear motor suitable for this type of machinery has great market potential. 2 Design Principle and Scheme The stator and vibrator of the motor are both made of silicon steel sheets. Their composition principle is shown in Figure 1. C1 and C2 are magnetic yokes made of stacked silicon steel sheets, on which excitation coils L1 and L2 are wound. The vibrator R is placed in the air gap between the two magnetic yokes, with a single-sided gap. When either coil L1 or L2 is energized, the electromagnetic attraction force generated by the magnetic field on the oscillator R is: where U is the air gap magnetic potential drop and G is the air gap permeability. When switches K1 and K2 are alternately closed, L1 and L2 are alternately energized, generating an alternating electromagnetic force that causes the oscillator R to reciprocate up and down. The opening and closing of switches K1 and K2 are controlled by trigger signals Q1 and Q2 through drive circuits G1 and G2. The question is, what conditions should Q1 and Q2 satisfy to ensure the system operates in its optimal state? [b][align=center]For more details, please click: Speed-Controlled Switched Reluctance Linear Motor and its Application in Straight Knife Cutting Machine[/align][/b]