Patent Document ID: 5450315
Application ID: 08312342
Patent Flag: 1

Claim One:
1. An apparatus for calculating power factor of a control system utilizing phase controlled switches supplying output power to an inductive and resistive load, said apparatus comprising: A a microprocessor for generating firing pulses for every half cycle period of conduction for controlling operation of said phase controlled switches, said firing pulses having variable firing angle delay times; B a first detector for determining a first time interval alpha representative of said firing angle delay time for energizing said phase controlled switches; C a second detector for determining a second time interval gamma representative of a total conduction time of said phase controlled switches for each half cycle period of conduction; D a neural network operating in said microprocessor, said neural network for calculating said power factor, said network comprising three layers fully connected including an input layer for receiving data representing alpha and gamma, a hidden layer having a single neuron and an output layer having a single neuron for computing said power factor, and for scaling and providing constant data relating to said power factor; and E control means within said microprocessor for using said data relating to said power factor with a predetermined schedule for varying said firing angle delay times.