an everyday example is the cruise control on a car, where ascending a hill would lower speed if only constant engine power were applied. the controller's pid algorithm restores the measured speed to the desired speed with minimal delay and overshoot by increasing the power output of the engine.
a high speed conveyor scale can be used to change the pacing, or pitch of the products on the line by speeding, or slowing the product speed to change the distance between packs before reaching a different speed going into a conveyor machine that is boxing multiple packs into a box. the 'pitch' is the measurement of the product as it comes down the conveyor line from leading edge to leading edge.
preferred walking speed has important clinical applications as an indicator of mobility and independence. for example, elderly people or people suffering from osteoarthritis must walk more slowly. improving increasing people's preferred walking speed is a significant clinical goal in these populations.
laser doppler velocimetry can be useful in automation, which includes the flow examples above. it can also be used to measure the speed of solid objects, like conveyor belts. this can be useful in situations where attaching a rotary encoder or a different mechanical speed measurement device to the conveyor belt is impossible or impractical.
conveyor belt through the middle of the machine there is a conveyor belt, along which blank pcbs travel, and a pcb clamp in the center of the machine. the pcb is clamped, and the nozzles pick up individual components from the feeders/trays, rotate them to the correct orientation and then place them on the appropriate pads on the pcb with high precision.
actual pulley speeds tend to be 0.5–1% less than generally calculated because of belt slip and stretch. in timing belts, the inverse ratio teeth of the belt contributes to the exact measurement. the speed of the belt is: speed = circumference based on pitch diameter × angular speed in rpm selection criteria
the relative speed of two adjacent belts is 8.0 km/h 5 mph in the book, the fast lane stops while the second lane keeps running at 153 km/h 95 mph . in the wells and asimov works there are more steps in the speed scale and the speeds are less extreme.