Electropneumatic position regulator
AssigneeVDO Adolf Schindling AG
InventorHeinrich Riensche
Life of this patent
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Abstract
An electropneumatic position regulator having a current/pressure transducer has, as electric input, at least one coil (11) fed with a current (setting signal), as well as a permanent magnet (16) whose relative position is variable as a function of the current for the adjustment of a nozzle/impact-plate arrangement (17, 18) of a pneumatic system. The position regulator serves for a pneumatic setting device (23) which has a stroke output and is connected with the nozzle/impact-plate arrangement. The position regulator furthermore comprises a position report device with an electric path transmitter (31) which is connected to the stroke output (32) of the setting device (23). The report signal from the electric path transmitter (31) is fed back to the electric input (coil 12) of the current/pressure transducer.
Claims5
An electropneumtic position regulator comprising:
- a current/pressure transducer;
- a pneumatic system having a nozzle/impact-plate assembly for operating the transducer;
- an electric input circuit having at least one coil to be fed with a current setting and a permanent magnet for which the relative position is variable as a function of the current for adjustment of the nozzle/impact-plate assembly;
- a pneumatic setting device which is connected with the nozzle/impact-plate system, and has a shaft stroke output, the setting device including a position reporting device between the shaft output and the transducer;
- and wherein
- the reporting device outputs an electric report signal which is fed back to a coil of the electric input circuit;
- and wherein
- the input circuit includes a first coil to be energized with said setting current, and a second coil magnetically coupled thereto, the regulator further comprising
- an electronic amplifier arranged between the reporting device and the second coil of the input circuit, the amplifier having setting elements for establishing a linear region of the position regulator to match a stroke of the pneumatic setting device.
Dependencies are inferred from the claim text.