Method for two-channel safe regulation of an apparatus

Details Method for two-channel safe regulation of an apparatus Method for two-channel safe regulation of an apparatus

1990-05-23

1991-08-27

Ip, Paul

Electricity: motive power systems

Positional servo systems

With compensating features

318563, 318564, 36442605, G06F 1100, G05B 1902, B60L 1500

Patent

active

050436481

ABSTRACT:
A nominal value is supplied both to a control in a first channel and to a regulator in a second channel parallel to the first channel. The control signal and the regulation signal are transmitted to an apparatus to be regulated. The regulation signal is monitored by a regulator monitoring unit, which generates a shutdown signal when a certain regulation signal level is exceeded and thereby controls or regulates the apparatus into a safe state of operation. In order to effect the regulation, an apparatus output quality is detected by a sensor and the output signal from the sensor is substracted from the nominal value at the input of the second channel. Due to the installation of a control in the first channel, only a single sensor is required for secure two-channel regulation.

REFERENCES:
patent: 3149272 (1964-09-01), Dendy
patent: 3422327 (1969-01-01), McBrayer et al.
patent: 3836834 (1974-09-01), Abbatiello et al.
patent: 4078750 (1978-03-01), Tomlinson
patent: 4165850 (1979-08-01), Dubreucq
patent: 4209828 (1980-06-01), Anderson et al.
patent: 4345191 (1982-08-01), Takats et al.
patent: 4556941 (1985-12-01), Zuber
patent: 4558415 (1985-12-01), Zuber et al.
H. Holscher and J. Rader, "Mikrocomputer in der Sicherheitstechnik" (Microcomputers in Safety Technology), Verlag TUV-Rheinland 1984, Chapter 7.3.

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