NUMBER CONTROLLER OF ELECTROMAGNETIC SYSTEM FOR SINGLE PHASE ALTERNATING CURRENT

摘要

PURPOSE: A number controller for single-phase alternating current (AC) electromagnetic system is provided to form a closed loop control circuit with a base rate, thereby enabling an electromagnetic system to operate at a stable speed. CONSTITUTION: An electronic circuit for power source (20) supplies a power source necessary to a micro controller unit (MCU) (10). An electronic circuit for zero-crossing measurement (30) transmits a zero-crossing signal to the MCU. An electronic circuit for message input (50) inputs various control parameter signals to the MCU. An electronic circuit for message display (40) indicates a function parameter. An electronic circuit for rate response (60) measures the speed AC signal of a single-phase AC electromagnetic system (200). [Reference numerals] (10) Micro controller unit (MCU); (100) Number control unit; (20) Electronic circuit for power source; (200) Single-phase AC electromagnetic system; (30) Electronic circuit for zero-crossing measurement; (40) Electronic circuit for message display; (50) Electronic circuit for message input; (60) Electronic circuit for rate response; (70) Electronic circuit for executing an electronic device; (AA) Alternating current voltage; (BB) Normal direction rotation; (CC) Backward direction rotation; (DD) Braking control