METHOD AND ELECTRONIC REGULATOR WITH A CURRENT MEASURING CIRCUIT FOR MEASURING THE CURRENT BY SENSE-FET AND SIGMA-DELTA MODULATION

• Main Authors: HEINZ, Micha, MICHEL, Frank, SCHMITZ, Axel, OEHLER, Peter
• Format: Patent
• Language: English; French; German
• Published: 29.08.2018
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

An electronic controller for motor vehicle control systems having at least one valve actuation circuit is described herein. The electronic controller uses pulse width modulation to control the load current (iL) flowing through an essentially inductive load (L), and has at least one electronic current measuring circuit which has at least one analog/digital converter which converts an analog measurement signal for the load current (iL) into a digital measurement signal for the load current (iL). The at least one analog/digital converter is a sigma-delta modulator. A method for measuring current using sigma-delta modulation and to the use of the electronic controller in a motor vehicle brake system is also described herein.