1/00 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) |
1/01 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) electric |
1/02 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) electric for comparing analogue signals |
1/03 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) electric for comparing digital signals |
1/04 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) electric with sensing of the position of the pointer of a measuring instrument |
1/06 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) electric with sensing of the position of the pointer of a measuring instrument continuous sensing |
1/08 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) electric with sensing of the position of the pointer of a measuring instrument stepwise sensing |
1/11 | Comparing elements, i.e. elements for effecting comparison directly or indirectly between a desired value and existing or anticipated values (comparing phase or frequency of two electric signals H03D 13/00) fluidic |
5/00 | Anti-hunting arrangements |
5/01 | Anti-hunting arrangements electric |
5/04 | Anti-hunting arrangements fluidic |
6/00 | Internal feedback arrangements for obtaining particular characteristics, e.g. proportional, integral, differential (in automatic controllers G05B 11/00) |
6/02 | Internal feedback arrangements for obtaining particular characteristics, e.g. proportional, integral, differential (in automatic controllers G05B 11/00) electric |
6/05 | Internal feedback arrangements for obtaining particular characteristics, e.g. proportional, integral, differential (in automatic controllers G05B 11/00) fluidic |
7/00 | Arrangements for obtaining smooth engagement or disengagement of automatic control |
7/02 | Arrangements for obtaining smooth engagement or disengagement of automatic control electric |
7/04 | Arrangements for obtaining smooth engagement or disengagement of automatic control fluidic |
9/00 | Safety arrangements (G05B 7/00 takes precedence; safety arrangements in programme-control systems G05B 19/048, G05B 19/406; safety valves F16K 17/00; emergency protective circuit arrangements in general H02H) |
9/02 | Safety arrangements (G05B 7/00 takes precedence; safety arrangements in programme-control systems G05B 19/048, G05B 19/406; safety valves F16K 17/00; emergency protective circuit arrangements in general H02H) electric |
9/03 | Safety arrangements (G05B 7/00 takes precedence; safety arrangements in programme-control systems G05B 19/048, G05B 19/406; safety valves F16K 17/00; emergency protective circuit arrangements in general H02H) electric with multiple-channel loop, i.e. redundant control systems |