Page 117 - PPO-OPM-TC

126 ë À≈—°°“√º≈‘μ·≈–°“√¥”‡π‘π°“√ (Principles of production and Operations)

‚¥¬®”π«π§√—Èß„π°“√ —Ëß´◊ÈÕμàÕªï‡∑à“°—∫Õÿª ߧåμàÕªïÀ“√¥â«¬¢π“¥°“√ —Ëß´◊ÈÕ μ—«Õ¬à“߇™àπ ∂â“μâÕß —Ëß
à
´◊ÈÕ ‘π§â“∑—ÈßÀ¡¥ 1,200 Àπ૬μàÕªï·≈– —Ëß´◊ÈÕ‡©≈’ˬ§√—Èß≈– 200 À𫬠¥—ßπ—ÈπμâÕß —Ëß´◊ÈÕ ‘π§â“ 6 §√—ÈßμàÕªï
à«π§à“„™â®à“¬„π°“√ —Ëß´◊ÈÕμàÕªï (Annual ordering cost) À√◊Õ§à“„™â®à“¬„π°“√μ—È߇§√◊ËÕß®—°√μàÕªï (Annual

เอกสารนี้
setup cost) ¡’§à“·ª√º°º—π°—∫¢π“¥°“√ —Ëß´◊ÈÕ·∫∫‰¡à‡ªìπ‡ âπμ√ߥ—ß· ¥ß„π¿“æ∑’Ë 9.2 °≈à“«§◊Õ‡¡◊ËÕ¢π“¥
°“√ —Ëß´◊ÈÕ¡“°¢÷Èπ„π·μà≈–§√—Èß §«“¡∂’Ë„π°“√ —Ëß´◊ÈÕμàժﮖ≈¥≈ß àߺ≈„Àâ§à“„™â®à“¬„π°“√ —Ëß´◊ÈÕ√«¡≈¥≈ߥ—ß
π—Èπ§à“„™â®à“¬μàÕªï√«¡®–· ¥ß¥—ß¿“æ∑’Ë 9.2 ´÷Ë߇ªìπº≈√«¡¢Õß§à“„™â®à“¬„π°“√‡°Á∫√—°…“μàÕªï ·≈–§à“„™â®à“¬
„π°“√ —Ëß´◊ÈÕμàÕªï À√◊Õ· ¥ß¥—ß ¡°“√∑’Ë (9.3)

μâπ∑ÿπ√«¡ = §à“„™â®à“¬„π°“√‡°Á∫√—°…“μàÕªï + §à“„™â®à“¬„π°“√ —Ëß´◊ÈÕÀ√◊Õμ—È߇§√◊ËÕß®—°√μàÕªï

ใช้สําหรับ
Q
D
S ()
C =
H () +
‡¡◊ËÕ 2 Q (9.4)
การเรียนการสอนเท่านั้น
C =§“„™â®à“¬μàÕªï
à
Q = ¢π“¥°“√ —Ëß´◊ÈÕμàÕ§√—Èß (Àπ૬)

H =§à“„™â®à“¬„π°“√‡°Á∫√—°…“ ‘π§â“§ß§≈—ßμàÕÀπ૬μàÕªï

D =Õÿª ߧå¢Õß ‘π§â“§≈—ßμàÕªï

S =§à“„™â®à“¬„π°“√ —Ëß´◊ÈÕÀ√◊Õ§à“„™â®à“¬„π°“√μ—Èß§à“‡§√◊ËÕß®—°√μàÕÀπ÷Ëߧ√—Èß
Dนําไปใช้เพื่อการค้า
·≈–‡π◊ËÕß®“° ª√‘¡“≥°“√ —Ëß´◊ÈÕ∑’˪√–À¬—¥ (EOQ) ‡ªìπª√‘¡“≥°“√ —Ëß´◊ÈÕ∑’Ë¡’μâπ∑ÿπ√«¡μË”∑’Ë ÿ¥¥—ßπ—Èπ
°“√À“ª√‘¡“≥°“√ —Ëß´◊ÈÕ∑’˪√–À¬—¥¡’ Ÿμ√¥—ßμàÕ‰ªπ’È

2 DS
EOQ = (9.5)
H

∫“ß°√≥’π‚¬∫“¬ ‘π§â“§ß§≈—ßÕ“®°”À𥇪ìπ™à«ß‡«≈“„π°“√ —Ëß´◊ÈÕ·∑π°“√°”Àπ¥ª√‘¡“≥°“√ —Ëß´◊ÈÕ
‚¥¬‡«≈“„π°“√ —Ëß´◊ÈÕ∑’ˇÀ¡“– ¡ Õ“®§”π«≥®“° √–¬–‡«≈“√–À«à“ß°“√ —Ëß´◊ÈÕ·μà≈–§√—Èß (Time between
orders : TOB) ´÷Ë߇ªìπ‡«≈“√Õ§Õ¬∑’Ë®– —Ëß´◊ÈÕ ‘π§â“‡æ‘Ë¡‡μ‘¡„π§√—ÈßμàÕ‰ª ∑—Èßπ’È √–¬–‡«≈“√–À«à“ß°“√ —Ëß´◊ÈÕ

—
—
Ë
—
à
◊
È
—
◊
·μ≈–§√ß Õ“®· ¥ß‡ªπª ‡¥Õ𠪥“À À√Õ«π ‚¥¬°“√§”π«≥‡«≈“√–À«“ß°“√ ß´Õ· ¥ß¥ß ¡°“√¥ßπ ’ È
ï
ì
◊
å
—
È
à
—
หาม
้
TBO (ªï) = EOQ (9.6)
EOQ
À√◊Õ TBO (‡¥◊Õπ) = EOQ (12 ‡¥◊Õπ)
EOQ D ฐติมา ไชยะกุล
EOQ
À√◊Õ TBO ( —ª¥“Àå) = (52 ‡¥◊Õπ)
EOQ D
EOQ ิ
À√◊Õ TBO («—π) = (356 «—π)
EOQ D