发明名称 |
HIGH-FREQUENCY HARDENING MONITOR DEVICE |
摘要 |
An induction hardening monitoring apparatus (20) comprising: a current sensor (21) for detecting output current from a high-frequency inverter (11); a voltage sensor for detecting a voltage generated in a heating coil (15) connected between output terminals of the high-frequency inverters (11) together with a capacitor (12) in an equivalent circuit manner; and a controller (23) for monitoring a hardening processing based on a detection signal from the current sensor (21) and a detection signal from a voltage sensor (22), wherein the controller (23) monitors a hardening processing by calculating an effective value of output current from the high-frequency inverter (11) based on a detection signal from the current sensor (21) and calculating an effective value of voltage generated in a heating coil (14) based on a detection signal from the voltage sensor (22); or further calculating load impedance based on each effective value. |
申请公布号 |
EP2210961(B1) |
申请公布日期 |
2016.06.15 |
申请号 |
EP20080831064 |
申请日期 |
2008.09.10 |
申请人 |
NETUREN CO., LTD. |
发明人 |
YANG, YUE;IKUTA, FUMIAKI;KITAMURA, TAICHI |
分类号 |
C21D1/42;C21D1/10;C21D11/00 |
主分类号 |
C21D1/42 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|