title: A programmable analog neural network processor.
abstract: An analog neural network breadboard consisting of 256 neurons and 2048 programmable synaptic weights of 5 bits each is constructed and tested. The heart of the processor is an array of custom-programmable synapse (resistor) chips on a reconfigurable neuron board. The analog bandwidth of the system is 90 kHz. The breadboard is used to demonstrate the application of neural network learning to the problem of real-time adaptive mirror control. The processor control is 21 actuators of an adaptive mirror with a step-response setting time of 5 ms. The demonstration verified that it is possible to modify the control law of the high-speed analog loop using neural network training without stopping the control loop.
authors.affiliation: Lockheed Palo Alto Res. Lab., CA.
authors.forename: W A
authors.initials: WA
authors.lastname: Fisher
authors.forename: R J
authors.initials: RJ
authors.lastname: Fujimoto
authors.forename: R C
authors.initials: RC
authors.lastname: Smithson