Abstract: A system for compensating electromagnetic interfering fields is provided that includes two triaxial magnetic field sensors for outputting real sensor signals; six compensation coils, which are arranged as a cage around an object to be protected, and may individually be actuated; a control unit having six inputs, and six outputs, and a digital processor receiving the sensor signals on the input side, and processing the signals to control signals for the compensation coils. The real sensor signals are converted to virtual sensor signals by a first matrix multiplication for mapping the interfering fields at the location of the object. The virtual sensor signals are made to modified signals by an operator describing the controller structure. The modified signals are converted to real control signals by a second matrix multiplication, which control signals are individually fed to the six compensation coils.

Abstract: A system for compensating electromagnetic interfering fields is provided that includes two triaxial magnetic field sensors for outputting real sensor signals; six compensation coils, which are arranged as a cage around an object to be protected, and may individually be actuated; a control unit having six inputs, and six outputs, and a digital processor receiving the sensor signals on the input side, and processing the signals to control signals for the compensation coils. The real sensor signals are converted to virtual sensor signals by a first matrix multiplication for mapping the interfering fields at the location of the object. The virtual sensor signals are made to modified signals by an operator describing the controller structure. The modified signals are converted to real control signals by a second matrix multiplication, which control signals are individually fed to the six compensation coils.

Abstract: Control of an active vibration isolation system with a digital controller, which includes an FPGA system (5) as the control unit. The FPGA system (5) is made up of freely programmable gate arrays with a sensor control matrix (51), which calculates axis signals in required degrees of freedom, with a control cascade block (53) for the axis signals containing several biquad filters (531, 532, 533, 534, 535), and with an output signal calculation block (55) for calculating digital actuator actuation signals. A digital signal processor (9) is connected in parallel with the FPGA system (5) in order to calculate controls with low phase loss requirements.

Abstract: A heat-transmitting device is adapted for use in a heat pump system which typically includes a throttle device, an evaporator, a compressor, and a further heat-transmitter device. The heat-transmitting device has a core tube coaxially disposed in a tubular shell. The region between the core tube and tubular shell is divided into two annular spaces by an annular ring sealingly disposed between the core tube and tubular shell. Each annular space serves as an independent condenser. Openings are provided in the tubular shell at each end thereof and on each side of the annular ring to facilitate fluid flow through the device. In the heat pump system, a cooling medium flows through one annular space of the device, then through the further heat transmitter, and then through the other annular space of the device. Heat is transferred by the device from the cooling medium to a fluid flowing through the core tube.

Abstract: A heat-transmitting device is adapted for use in a heat pump system which typically includes a throttle device, an evaporator, a compressor, and a further heat-transmitter device. The heat-transmitting device has a core tube coaxially disposed in a tubular shell. The region between the core tube and tubular shell is divided into two annular spaces by an annular ring sealingly disposed between the core tube and tubular shell. Each annular space serves as an independent condenser. Openings are provided in the tubular shell at each end thereof and on each side of the annular ring to facilitate fluid flow through the device. In the heat pump system, a cooling medium flows through one annular space of the device, then through the further heat transmitter, and then through the other annular space of the device. Heat is transferred by the device from the cooling medium to a fluid flowing through the core tube.

Abstract: The invention is concerned with the effecient removal and recovery of unreacted monomers from polymer latices prepared by emulsion polymerization.