Resolver to Digital Converters
Two independent resolver-to-digital converters condition the sensor inputs.
These versatile chips have programmable resolution and internal diagnostic functions.
The control of these converters is performed by the host computer. These converters
support a variety of operational modes provided by the circuitry onboard, these include
Resolvers, Inductosyns, Syncros and LVDT's that can conditioned with up to 16-bit
resolution. The following passage will illustrate these connections.
Connecting Resolvers to ERES104
The figure 3-1a illustrates a generic resolver connection scheme to the converter.
Figure 3-1b shows a real connection that is used on the ERES104. The dashed line describes
the onboard precision resistor pack that is used to precondition the voltage range
of the sensors to a suitable level. If non differentially connected resolvers are used they
connect directly to the sin and cos inputs of the appropriate channels.
Figure 3-1a Differential resolver connection to a ERES104
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ERES104 Ver 1.2 (c) RTD Finland Oy 2000-2001