Title: Apparatus for measuring motor rotation speed by rotor frequency method
Application Number: 200610086348 Application Date: 2006.07.05
Publication Number: 1885041 Publication Date: 2006.12.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G01P3/44,G01P3/48,G01P3/481,H02P6/06,H02P23/14,H02P29/00
Applicant(s) Name: Tang Guobao Address: 225800
Inventor(s) Name:
Attorney & Agent: jiang beng
Abstract:
     The invention relates to a motor rotation speed testing device with rotor frequency method, wherein it comprises a motor, a programmable controller PLC, and a sine wave-square wave convert circuit; the test signal input of convert circuit is connected to the two-phase wire of motor rotor coil, while the output is connected to the high-speed input of programmable controller PLC; the high-speed impulse output of controller PLC is connected to the account input of high-speed counter. The invention can use internal circuit to measure the frequency of rotor voltage, without adding motion element, to real-time calculate out the rotation speed of motor, to improve the system reliability and save the producing cost.
Time: 10
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