A Digital Device to Measure Angular Speed and Torque Angle
Dennis Wayne Huber, O.P. Malik, G.S. Hope · IEEE Transactions on Industrial Electronics and Control Instrumentation · 1975
A device to measure the angular speed and torque angle of a synchronous machine is described. Measurements of very high accuracy are made in a very short time. The output signals are available in a digital format suitable for direct use in an on-line digital control device.