Changa Manga silkworm eggs (about 3 million eggs) from France. To house the worms, he created long sheds from bamboo and dried grass. The worms’ feed consisted entirely of mulberry leaves obtained from felled trees in the forest. The worms fed on 70 hundredweights of leaves a day. In 1916, the Governor of Punjab Sir Michael O'Dwyer visited the silk experiment where the silkworms had started developing cocoons. The governor left pleased with Booth-Tucker’s work. The Salvation Army Silk Camp remained a sustainable venture for a year after the governor’s visit, although changes to the climate later led to its decline. The
Feed forward (control) practiced due to the difficulty and expense of developing or providing for the mathematical model required to facilitate this type of control. Open-loop control and feedback control, often based on canned PID control algorithms, are much more widely used. There are three types of control systems: open loop, feed-forward, and feedback. An example of a pure open loop control system is manual non-power-assisted steering of a motor car; the steering system does not have access to an auxiliary power source and does not respond to varying resistance to turning of the direction wheels; the driver must make that response without