Actuator controller provided with program replacement protection

Details Actuator controller provided with program replacement protection Actuator controller provided with program replacement protection

1998-03-04

2000-11-21

Sheikh, Ayaz R.

Data processing: generic control systems or specific application

Generic control system, apparatus or process

Optimization or adaptive control

700 2, 700 83, 700 86, 700 87, 701101, 701107, 327142, 84603, G05B 1302

Patent

active

061515302

ABSTRACT:
A first microprocessor controls an actuator according to a control program stored in a program storage memory, using a learnt value stored in a learning value storage memory. The learnt value is updated in response to an action of the actuator. A second microprocessor is connected to the first microprocessor to replace the control program with another control program which also has a function to initialize the learnt value. However, when the learnt value has been updated, the first microprocessor prohibits the second microprocessor from replacing the control program, thereby preventing the impairment of control response due to initialization of the learnt value.

REFERENCES:
patent: 4277829 (1981-07-01), Tokuda et al.
patent: 4630577 (1986-12-01), Cornacchia
patent: 5170338 (1992-12-01), Moritoki et al.
patent: 5247444 (1993-09-01), Arai et al.
patent: 5313395 (1994-05-01), Kawai et al.
patent: 6019082 (2000-02-01), Mashiki et al.

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