1. Electric sewing machine: Control the motor speed by changing the voltage. This type of sewing machine is generally operated by a pedal speed controller.
2. Electronic sewing machine: The speed is controlled by the circuit, and it can generally be operated by the buttons on the body panel close to hand. Some of them can be operated with a pedal speed controller like an electric sewing machine.
Compared with the electric sewing machine, the electronic sewing machine has the following advantages: enhanced penetration of thick materials; at the end of sewing, the needle stop position (up and down) can be controlled; operation by the body panel. Computer sewing machine: Built-in micro computer module, preset stitch length and width of various patterns. It can also realize functions such as sewing characters, sewing complicated patterns and embroidering.
It can automatically complete the following functions: automatic adjustment of thread tension, automatic buttonhole, automatic reverse stitching at the beginning and end of sewing, and one-key setting of patterns.
The foot pedal speed controller can start, stop or adjust the speed by controlling the pedaling force. Electric sewing machines, professional sewing machines and overlock sewing machines use this control method. This method of operation is very convenient when you need to use both hands to make large-scale works, or when you need to adjust the speed frequently. Although it is very convenient to use while sitting, it may be inconvenient if it is operated on your knees.
2. The fuselage panel operation, start, stop, speed adjustment, reverse stitching and other operations can be operated through the fuselage panel switch at hand. The pedal sewing machine cannot use this control method.