Hybrid control law servo co-processor integrated circuit

Details Hybrid control law servo co-processor integrated circuit Hybrid control law servo co-processor integrated circuit

1992-07-13

1993-09-14

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

318569, 318601, 318604, G05B 1101

Patent

active

052452620

ABSTRACT:
A digitally programmable integrated-circuit analog-signal servo co-processor has digital programming contact pads to which an external microprocessor may be connected, has analog-signal input pads and analog-signal output pads, and includes a plurality of programmable analog-signal-manipulating circuits (ASMC's). Each of the ASMC's has input and output terminals connected to an input programmable-switch matrix so that one or a combination of the ASMC blocks may be connected between the analog-signal input and output contact pads of the integrated circuit. Certain ASMC blocks have microprocessor programmable transfer functions, e.g. ASMC integrator, notch filter, low pass filter, PD compensator and voltage divider. Key ones of those ASMC blocks are discrete-time circuits including switched-capacitor resistors and have transfer functions wherein the parameters are ratios of capacitances and the switching rate frequency to provide accurate and stable performance. This versatile system of digitally programmable circuit configurations and digitally programmable analog (ASMC) transfer functions provides a hybrid analog and digital servo co-processor having high speed, versatility and stability and a low power consumption.

REFERENCES:
patent: 4437046 (1984-03-01), Foillace
patent: 4498063 (1985-02-01), Makabe et al.
patent: 4843289 (1989-06-01), Mogi et al.
patent: 4866779 (1989-09-01), Kennedy et al.
patent: 4956831 (1990-09-01), Sarraf et al.

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