US 4,598,289 A · Control device for a synchro receiver

Abstract

A control device suitable for synchros comprising three stator windings. The device comprises four circuit branches with the inputs of the first and the second branches interconnected to receive a first voltage from the ends of the stator windings of the synchro transmitter and with the inputs of the third and the fourth branches interconnected to receive a second voltage from the ends of the stator windings of the synchro transmitter. Two adder elements supply control voltages to the stator windings of the synchro receiver. Two inputs of the first adder are connected to the outputs of the first and the third branches, respectively and the two inputs of the secnd adder are connected to the outputs of the second and the fourth branches. These branches have transfer functions in the form sin (.alpha.+.phi.1), sin (.alpha.+.phi.2), sin (.alpha.+.phi.3), sin (.alpha.+.phi.4), respectively, wherein .alpha. represents the information supplied by a digital element and .phi.1, .phi.2, .phi.3, .phi.4 represent the differentphase shift angles. Used to display the position on the instrument panel of aeroplanes.

Claims9

Dependent claims

A control device for a synchro receiver for data supplied by a synchro transmitter and a digital element, the said synchros each comprising three stator windings, the control device comprising:

four circuit branches with inputs of the first and the second branches interconnected to receive a first voltage from a first stator winding of the synchro transmitter and with inputs of the third and the fourth branches interconnected to receive a second voltage from a second stator winding of the synchro, first and second adders, means connecting two inputs of the first adder to outputs of the first and the third branches, respectively, means connecting two inputs of the second adder to outputs of the second and the fourth branches, said first, second, third and fourth branches having a transfer function of the form sin (.alpha.+.phi.1), sin (.alpha.+.phi.2), sin (.alpha.+.phi.3), and sin (.alpha.+.phi.4), respectively, wherein .alpha. represents the data supplied by the digital element and .phi.1, .phi.2, .phi.3, .phi.4 the different phase angles of the first, second, third, and fourth branches, respectively, and means for applying control voltages derived at outputs of the first and second adders to the stator windings of the synchro receiver.

A control device for a synchro receiver having three stator windings adapted to be coupled to first and second output terminals of the control device comprising:

first and second input terminals for receiving first and second analog data signals, input means for applying a digital data signal .alpha. to first, second, third and fourth circuit branches of the control device, said first, second, third and fourth circuit branches having respective transfer functions of the form sin (.alpha.+.phi.1), sin (.alpha.+.phi.2), sin (.alpha.+.phi.3) and sin (.alpha.+.phi.4), wherein .phi.1, .phi.2, .phi.3, and .phi.4 represent respective phase shift angles of the first, second, third and fourth circuit branches, means connecting an input of the first circuit branch and an input of the second circuit branch to the first input terminal, means connecting an input of the third circuit branch and an input of the fourth circuit branch to the second input terminal, a first adder circuit having first and second inputs connected to respective outputs of the first and third circuit branches, a second adder circuit having first and second inputs connected to respective outputs of the second and fourth circuit branches, and means for applying control signals produced at outputs of the first and second adder circuits to said first and second output terminals, respectively.

Dependencies are inferred from the claim text.

Control device for a synchro receiver

Life of this patent

Control device for a synchro receiver

Life of this patent

Abstract

Claims9