E102 — HDS 1.0 — Cascaded Plunger Flow Control

Previous generation – MUX pressure control / PPC (patent family E87, priority 2005): Patent family E87 establishes the basic principle of electrohydraulic pressure control: piston pressure control (PPC method) using a brushless EC motor with Id/Iq vector current control, adaptive map control, and sequential MUX valve control in a closed braking loop. The control-related limitation—during pressure reduction at one wheel, simultaneous pressure build-up is not possible—forms the central motivation for the further development leading to E102. Referenced in the IBS technical article as [5,6,7,8].

This document – HDS 1.0 / Plunger Flow Control (Patent Family E102, Priority 2009): Patent family E102 (inventors: H. Leiber, C. Köglsperger, A. van Zanten; 10 patent specifications (6 DE/EP + 4 PCT foreign patents), 25 core inventions) describes the first-generation highly dynamic pressure control (HDS 1.0). The key advancement: introduction of partially simultaneous and simultaneous operation via a cascaded control architecture (inner loop: piston position/velocity; outer loop: target pressure via pV characteristic curve) and wheel-selective PWM valve modulation. Referenced as [27] in the IBS technical article.

Next Generation – HDS 2.0 / Hybrid Pressure Control Strategy (Patent Family E141, filed 2015): Patent family E141 extends the E102 architecture by adding the degree of freedom of the outlet valves. HDS 2.0 combines volume control via three types of delivery mechanisms (plunger, double-acting piston, rotary pump) with time control/PWM of the outlet valves. Bridge: Claim E102DE2-A35 (bidirectional volume flow). Core functions: Volume make-up (TA1), asymmetric AV architecture with valve reduction (TA2), vibration reduction via AV bypass (TA3), dual sensor strategy with offset compensation.

25 core inventions organized into four technological channels, each covering a distinct aspect of the HDS 1.0 cascaded pressure control architecture.