Stephen H. Reichenbach;George Chao-chih Hsu;Yu Fai Law
发明人:
Stephen H. Reichenbach,George Chao-chih Hsu,Yu Fai Law
申请号：
US13166771
公开号：
US08905910B2
申请日:
2011.06.22
申请国别(地区):
US
年份:
2014
代理人:
摘要：
A fluid delivery system includes an electric motor, a pump driven by the electric motor, and a control system. The control system is programmed to supply a variable voltage to the electric motor, to sense a response of a current of the electric motor to the variable voltage, and to obtain frequency domain information about the response of the current of the electric motor.
