One-bit processing for real-time control

In this paper we present an important new concept for real-time control law implementation based on bit-serial approach. It is shown that control laws can be efficiently implemented by 1-bit processing through the use of ΔΣ modulation. After processing, the bitstream output can be directly applied to analogue interface according to pulse-density-modulation (PDM). This technique is quite promising for system-on-chip (SoC) applications as the system cost can be greatly reduced by bit-serial architectures and eliminating the decoding of a bitstream prior to processing.