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Semiconductor General Purpose 24 Volt Motor Drivers Slide 16

This slide presents a review of motor usage for industrial equipment. Vending machines have evolved over the years. Originally, the contents they contained were of similar size and shape. The object being sold was also very durable and could be dropped from the top shelf to the bottom of the dispenser without worry that it would be damaged. The user just had to be careful when opening a carbonated beverage. The newer vending machines are being asked to dispense a wide variety of products with different sizes, shapes, and durability. To do this, a tray is brought to where the item sits on the shelf, the item is moved onto the tray, and then it is brought to a dispensing window where the purchaser can access it. This tray must be precisely controlled, a stepper is usually used for this purpose. Brush motors are typically used for moving the object forward and opening the dispensing door. In contrast, textile machines need more precise control. The processor needs to accurately feed materials and control their positions. Typically many actions are occurring at once that require precise coordination. These devices will have ten to twenty motor drivers on the same board. Drink dispensers, where the serving is in a cup and not a box or can, use motors to control the amount of syrup, carbonated water, and ice that gets mixed into the cup. The control is very similar to valve control discussed in the 3 – 15 V general purpose motor driver presentation. The ingredients of coffee and tea are powder and in this application a brush motor is often used. In these dispensers, the strength of the coffee and tea, and the amount of sugar and cream are adjusted by stepper motors.

PTM Published on: 2012-12-20