Electric controller systems with manual and automatic mode

Claim 2

A controller comprising an input impedance circuit having an input terminal and an output terminal, means to impress upon said input terminal a signal related to a measured signal from a processing system, an operational amplifier to produce an output signal supplied to a load, a transfer switch connected between the output terminal of said input impedance circuit and the input terminal of said operation amplifier, a feedback circuit including a capacitor connected between input and output terminals of said operational amplifier to store a voltage related to said output signal, and a manual setter including means to modify the voltage stored in said capacitor by an external signal, the arrangement being such that at the time of the automatic control operation said transfer switch is operated to connect said output terminal of said input impedance circuit to said input terminal of said operational amplifier whereas at the time of the control operation by said external signal said transfer switch is operated to disconnect said output terminal of said input impedance circuit from said input terminal of said operational amplifier, thus modifying the voltage stored in said capacitor in said feedback circuit by the signal supplied by said manual setter.

Claim 3

The controller according to claim 1 wherein said external signal applied to said manuaL setter comprises a manually generated signal.

Claim 4

The controller according to claim 1 wherein said external signal applied to said manual setter comprises a digital signal supplied from a digital computor.

Claim 5

The controller according to claim 1 wherein means is provided to apply a pulse signal to the input terminal of said operational amplifier through a resistor at the time of control by said external signal whereby to modify the voltage stored in said capacitor according to said pulse signal.

Claim 6

The controller according to claim 1 which further comprises an output transistor to amplify the output signal from said operational amplifier.

Claim 7

The controller according to claim 1 wherein said input impedance circuit comprises a capacitor, means to apply to one terminal of said capacitor said signal related to said measured signal from said processing system, a resistor, and means to apply to one end of said resistor a fraction of said signal related to said measured signal.

Claim 8

The controller according to claim 1 wherein said signal related to said measured signal and applied upon said input terminal of said input impedance circuit comprises a different signal between said measured signal and a reference signal.

Claim 9

The controller according to claim 1 wherein said signal related to said measured signal and applied to said input terminal of said input impedance circuit comprises a difference signal between a signal obtained by differentiating said measured signal and a reference signal.

Claim 10

The controller according to claim 1 wherein said signal related to said measured signal and impressed upon the input terminal of said input impedance circuit comprises a signal obtained by differentiating the difference between said measured signal and a reference signal.

Claim 11

The controller according to claim 1 which further comprises a pair of diodes connected in parallel opposition between the input terminal of said operational amplifier and a point of common potential.

Claim 12

A controller comprising an input impedance circuit having an input terminal, means to impress upon said input terminal a signal related to a measured signal from a processing system, an operational amplifier to produce an output signal supplied to a load, a holding capacitor with one terminal connected to the output terminal of said operational amplifier to store a voltage corresponding to said output signal, a feedback circuit including said holding capacitor and connected between the input and output terminals of said operational amplifier, a transfer switch connected between the output terminal of said input impedance circuit and the input terminal of said operational amplifier, and a manual setter including means to modify the voltage stored in said holding circuit, said transfer switch being operable to connect the output terminal of said input impedance circuit to the input terminal of said operational amplifier and to connect the other end of said holding capacitor to a point of common potential during the automatic control operation, whereas during the controlling operation by an external signal said transfer switch operating to connect the output terminal of said input impedance circuit to said point of common potential and to connect one terminal of said holding capacitor to the input terminal of said operational amplifier.

Claim 13

A controller comprising an input impedance circuit having an input terminal, means to impress upon said input terminal a signal related to a measured signal from a processing system, an operational amplifier to produce an output signal supplied to a load, a holding capacitor with one terminal connected to the output terminal of said operational amplifier to store a voltage corresponding to said output signal, a feedback circuit including said holding capacitor and connected between the input and output terminals of said operational amplifier, a transfer switch connected between the output terminal of said input impedance circuit and the input terminal of said operational amplifier, and a manual setter including means to modify the voltage stored in said holding circuit, said transfer switch being operable to connect the output terminal of said input impedance circuit to the input terminal of said operational amplifier and to connect the other end of said holding capacitor to a point of common potential during the automatic control operation, whereas during the controlling operation by an external signal said transfer switch operating to connect the output terminal of said input impedance circuit to said point of common potential and to connect one terminal of said holding capacitor to the input terminal of said operational amplifier.

Claim 14

The controller according to claim 1 which further comprises a limiter circuit connected to the output terminal of said operational amplifier, and wherein the upper and lower limit set values of said limiter circuit are variable.

Claim 15

The controller according to claim 1 wherein said limiter circuit is provided with means for setting said upper and lower limit values to substantially the same value to manually vary said values in union to adjust the output signal supplied to said load.

Claim 16

The controller according to claim 12 wherein said limiter circuit comprises a variable resistor having two sliding brushes, a first transistor rendered ON and OFF in accordanCe with the relative magnitude between the voltage produced at one brush of said variable resistor and the voltage impressed upon the input terminal of said limiter circuit, a second transistor rendered ON and OFF by said first transistor, and a third transistor rendered ON and OFF in accordance with the relative magnitude between the voltage produced at the other brush and at the input terminal of said limiter circuit.

Claim 17

The controller according to claim 12 wherein said limiter circuit comprises a variable resistor having two brushes, a first comparator supplied with the voltage produced at one of said brushes and voltage related to the output voltage supplied to said load, a first diode rendered ON and OFF by the output from said comparator, a second comparator supplied with the voltage produced at the other of said brushes and a voltage related to said output voltage supplied to said load, and a second diode rendered ON and OFF in accordance with the output from said second comparator.

Claim 18

The controller according to claim 1 which further comprises a source of supply to energize said operational amplifier and means to shift the voltage levels of the input and output signal of said operational amplifier by a definite voltage.

Claim 19

A controller device comprising a primary controller including a first input impedance circuit having an input terminal and an output terminal, means to impress upon said input terminal a signal related to a measured signal from a processing system, a first operational amplifier to produce an output signal a local setter, a cascade-local transfer switch connected between the output terminal of said input impedance circuit and the input terminal of said operational amplifier for switching the operation between the control by cascade setting and the control by said local setter, a feedback capacitor for said operational amplifier connected to store a voltage related to the output voltage from said operational amplifier, said local setter including means to modify the voltage stored in said capacitor; and a second controller comprising a second input impedance circuit including a second capacitor, means to apply to the input terminal of said second input impedance circuit a signal related to the difference between a signal related to a second measured signal from a processing system and the output signal from said primary controller, a second operational amplifier, a second transfer switch interposed between the output terminal of said input impedance circuit and the input terminal of said second operational amplifier, a feedback circuit for said second operational amplifier including a third capacitor to store a voltage related to the output signal supplied to a load from said second operational amplifier and a manual setter including means to modify the voltage stored in said third capacitor in accordance with an external signal, said second controller being connected to utilize said output signal from said first controller as the set value signal.

Claim 20

A controller device comprising a primary controller including a first input impedance circuit having an input terminal and an output terminal, means to impress upon said input terminal a signal related to a measured signal from a processing system, a first operational amplifier to produce an output signal a local setter, a cascade-local transfer switch connected between the output terminal of said input impedance circuit and the input terminal of said operational amplifier for switching the operation between the control by cascade setting and the control by said local setter, a feedback capacitor for said operational amplifier connected to store a voltage related to the output voltage from said operational amplifier, said local setter including means to modify the voltage stored in said capacitor; and a second controller comprising a second input impedance circuit including a second capacitor, means to apply to the input terminal of said second input impedance circuit a signal related to the difference between a signal related to a second measured signal from a processing system and the output signal from said primary controller, a second operational amplifier, a second transfer switch interposed between the output terminal of said input impedance circuit and the input terminal of said second operational amplifier, a feedback circuit for said second operational amplifier including a third capacitor to store a voltage related to the output signal supplied to a load from said second operational amplifier and a manual setter including means to modify the voltage stored in said third capacitor in accordance with an external signal, said second controller being connected to utilize said output signal from said first controller as the set value signal.

Claim 21

The controller device according to claim 17 wherein said local setter comprises a voltage generator, an operational amplifier and a balancing motor, the arrangement being such that during the control operation by cascade setting, said voltage generator, said operational amplifier and said balancing motor constitute a servo circuit whereas during the control operation by local setting constitute a circuit to send out the voltage generated by said voltage generator.

Claim 22

The controller device according to claim 17 wherein said local setter comprises a voltage generator having a local setting controlling means to adjust the voltage generated by said voltage generator.

Claim 23

The controller according to claim 1 which further comprises means to apply to the input terminal of said operational amplifier a feed forward signal through a capacitor.

Claim 24

A controller comprising an operational circuit connected to receive a measured signal from a processing system for obtaining a deviation signal between said measured signal and a reference signal, a feed forward signal generating circuit to add an external disturbance signal and the output signal from said operational circuit, and at least one output section including an operational amplifier to supply an output signal to a load, a transfer switch provided on the input side of said operational amplifier, a feedback circuit for said operational amplifier to store a voltage related to said output signal, and a manual setter including means to modify the voltage stored in said capacitor in accordance with an external signal, the arrangement being such that during the automatic control operation the output signal of said operational circuit is supplied to the input terminal of said operational amplifier of said output section via a resistor and the output signal from said feed forward signal generating circuit is supplied to the input terminal of said operational amplifier whereas during the controlling operation by said external signal opposite terminals of said resistor and said capacitor are connected to a point of common potential.

Claim 25

A controller comprising an operational circuit connected to receive a measured signal from a processing system for obtaining a deviation signal between said measured signal and a reference signal, a feed forward signal generating circuit to add an external disturbance signal and the output signal from said operational circuit, and at least one output section including an operational amplifier to supply an output signal to a load, a transfer switch provided on the input side of said operational amplifier, a feedback circuit for said operational amplifier to store a voltage related to said output signal, and a manual setter including means to modify the voltage stored in said capacitor in accordance with an external signal, the arrangement being such that during the automatic control operation the output signal of said operational circuit is supplied to the input terminal of said operational amplifier of said output section via a resistor and the output signal from said feed forward signal generating circuit is supplied to the input terminal of said operational amplifier whereas during the controlling operation by said external signal opposite terminals of said resistor and said capacitor are connected to a point of common potential.

Claim 26

An automatic selecting controller device comprising at least two controllers, each of said controllers comprising an input impedance circuit connected to receive at its one terminal a signal related to a measured signal from a processing system, an operational amplifier, a transfer switch interposed between the end of said input impedance circuit and the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier, and a manual setter including means to modify the voltage stored in said capacitor in accordance with an external signal; an automatic selector circuit including a diode; means to apply output signals from said at least two controllers whereby to supply an output signal corresponding to a larger or smaller one of said output signals to a load; and means to store a voltage related to said output signal supplied to said load in said feedback capacitor.

Claim 27

An automatic selecting controller device comprising at least two controllers, each of said controllers comprising an input impedance circuit connected to receive at its one terminal a signal related to a measured signal from a processing system, an operational amplifier, a transfer switch interposed between the end of said input impedance circuit and the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier, and a manual setter including means to modify the voltage stored in said capacitor in accordance with an external signal; an automatic selector circuit including a diode; means to apply output signals from said at least two controllers whereby to supply an output signal corresponding to a larger or smaller one of said output signals to a load; and means to store a voltage related to said output signal supplied to said load in said feedback capacitor.

Claim 28

The automatic selecting controlling device according to claim 22 wherein said automatic selector circuit includes a transistor with its emitter electrode connected to a source of supply.

Claim 29

The automatic selecting controlling device according to claim 22 wherein said automatic selector circuit includes a transistor with its collector electrode connected to a source of supply.

Claim 30

A controller device comprising at least two controllers, each of said adjusters including an input impedance connected to receive at its input terminal a signal related to a measured signal from a processing system, an operational amplifier, a transfer switch disposed between the output terminal of said input impedance circuit and the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier, and a manual setter including means to modify the voltage stored in said capacitor; a load; a second transfer switch to selectively supply the outputs from said at least two controllers to said load; and means to store in said feedback capacitor a voltage related to the output signal supplied to said load.

Claim 31

A controller device comprising at least two controllers, each of said adjusters including an input impedance connected to receive at its input terminal a signal related to a measured signal from a processing system, an operational amplifier, a transfer switch disposed between the output terminal of said input impedance circuit and the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier, and a manual setter including means to modify the voltage stored in said capacitor; a load; a second transfer switch to selectively supply the outputs from said at least two controllers to said load; and means to store in said feedback capacitor a voltage related to the output signal supplied to said load.

Claim 32

A controller comprising at least two operator sections to determine the difference between a measured signal from a processing system and a reference signal, at least two input impedance circuits each including a capacitor and connected to receive at its one terminal a signal related to the output signal from one of said operator sections, an operational amplifier, a transfer switch interposed between the other terminals of said input impedance circuits and the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier to store a voltage related to the output signal supplied to a load from said operational amplifier, and a manual setter including means to modify the voltage stored in said feedback capacitor in accordance with an external signal, the arrangement being such that during the automatic control operatioN said transfer switch operates to connect the output terminal of either one of said at least two input impedance circuits to the input terminal of said operational amplifier whereas during the manual control operation said transfer switch operates to connect the output terminals of said input impedance circuits to a point of common potential.

Claim 33

A controller comprising at least two operator sections to determine the difference between a measured signal from a processing system and a reference signal, at least two input impedance circuits each including a capacitor and connected to receive at its one terminal a signal related to the output signal from one of said operator sections, an operational amplifier, a transfer switch interposed between the other terminals of said input impedance circuits and the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier to store a voltage related to the output signal supplied to a load from said operational amplifier, and a manual setter including means to modify the voltage stored in said feedback capacitor in accordance with an external signal, the arrangement being such that during the automatic control operatioN said transfer switch operates to connect the output terminal of either one of said at least two input impedance circuits to the input terminal of said operational amplifier whereas during the manual control operation said transfer switch operates to connect the output terminals of said input impedance circuits to a point of common potential.

Claim 34

A controller comprising a first operator section connected to receive a measured signal from a processing system to subject said measured signal at least to a proportionality gain operation, a second operator section to determine the difference between a reference signal and said measured signal, an operational amplifier to supply an output signal to a load, a transfer switch connected to the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier to store a voltage related to said output signal, and a manual setter including to modify the voltage stored in said feedback capacitor in accordance with said external signal, the arrangement being such that said transfer switch operates to apply the output voltage from said first operator section to the input terminal of said operational amplifier during the automatic control operation whereas during the control operation by said external signal said transfer switch operates to connect the output terminal of said first operator section to a point of common potential through a capacitor.

Claim 35

A controller comprising a first operator section connected to receive a measured signal from a processing system to subject said measured signal at least to a proportionality gain operation, a second operator section to determine the difference between a reference signal and said measured signal, an operational amplifier to supply an output signal to a load, a transfer switch connected to the input terminal of said operational amplifier, a feedback capacitor for said operational amplifier to store a voltage related to said output signal, and a manual setter including to modify the voltage stored in said feedback capacitor in accordance with said external signal, the arrangement being such that said transfer switch operates to apply the output voltage from said first operator section to the input terminal of said operational amplifier during the automatic control operation whereas during the control operation by said external signal said transfer switch operates to connect the output terminal of said first operator section to a point of common potential through a capacitor.