[algorithm] PID Controller ์•Œ๊ณ ๋ฆฌ์ฆ˜
ยท
Programmings/Algorithms
PID ์ปจํŠธ๋กค๋Ÿฌ ์•Œ๊ณ ๋ฆฌ์ฆ˜PID ์ปจํŠธ๋กค๋Ÿฌ๋Š” Proportional-Integral-Derivative (๋น„๋ก€-์ ๋ถ„-๋ฏธ๋ถ„) ์ œ์–ด ์•Œ๊ณ ๋ฆฌ์ฆ˜์œผ๋กœ, ์ œ์–ด ์‹œ์Šคํ…œ์—์„œ ๋ชฉํ‘œ๊ฐ’๊ณผ ์‹ค์ œ๊ฐ’ ๊ฐ„์˜ ์˜ค์ฐจ๋ฅผ ์ค„์ด๊ธฐ ์œ„ํ•ด ์‚ฌ์šฉ๋˜๋Š” ํ”ผ๋“œ๋ฐฑ ์ œ์–ด ๋ฐฉ์‹์ž…๋‹ˆ๋‹ค. ์ด๋Š” ์‚ฐ์—… ์ž๋™ํ™”, ๋กœ๋ด‡ ์ œ์–ด, ์˜จ๋„ ์กฐ์ ˆ ๋“ฑ ๋‹ค์–‘ํ•œ ๋ถ„์•ผ์—์„œ ๋„๋ฆฌ ํ™œ์šฉ๋ฉ๋‹ˆ๋‹ค.PID ์ œ์–ด์˜ ๊ตฌ์„ฑ ์š”์†ŒPID ์ปจํŠธ๋กค๋Ÿฌ๋Š” ์„ธ ๊ฐ€์ง€ ์ฃผ์š” ์ œ์–ด ์š”์†Œ๋กœ ๊ตฌ์„ฑ๋ฉ๋‹ˆ๋‹ค:๋น„๋ก€ ์ œ์–ด (Proportional Control, P)ํ˜„์žฌ ์˜ค์ฐจ $ e(t) $์— ๋น„๋ก€ํ•˜์—ฌ ์ œ์–ด ์‹ ํ˜ธ๋ฅผ ์ƒ์„ฑํ•ฉ๋‹ˆ๋‹ค.์˜ค์ฐจ๊ฐ€ ํด์ˆ˜๋ก ํฐ ์ œ์–ด ์‹ ํ˜ธ๋ฅผ ๋งŒ๋“ค์–ด ๋ชฉํ‘œ๊ฐ’์œผ๋กœ ๋น ๋ฅด๊ฒŒ ์ด๋™ํ•˜๋„๋ก ํ•ฉ๋‹ˆ๋‹ค.๋‹จ์ : ์ž”๋ฅ˜ ์˜ค์ฐจ(steady-state error)๊ฐ€ ๋‚จ์„ ์ˆ˜ ์žˆ์Šต๋‹ˆ๋‹ค.์ ๋ถ„ ์ œ์–ด (Integral Control, I)์‹œ๊ฐ„์— ๋”ฐ๋ผ ..