NOVELTY - The exhaust treatment system (52) includes a PM filter (56) that receives exhaust gas of an engine, and filters PM from the exhaust gas. The PM filter includes M zones, and an electric heater (58) provided to heat exhaust gas input to N of the M zones. The parameter M is an integer greater than one, and N is an integer less than M. The N zones include an axially centered portion of the PM filter. The other ones of the M zones include a remaining portion of the PM filter surrounding the N zones.    USE - Exhaust treatment system used in engine system. Uses include but not limited to diesel engine systems, gasoline direct injection engine systems, and homogeneous charge compression ignition engine systems.    ADVANTAGE - Provides an engine control systems that includes an electrically heated particulate filter. Uses a reduced volume electrical heating technique and a high temperature exhaust heating technique to regenerate the PM filter. Regenerates a first portion of the PM filter using the reduced volume electrical heating technique that includes activating a single electric heater, in which regenerating the first portion using a single electric heater reduces costs and durability problems associated with multiple heaters. Ensures that the remaining second portion is regenerated using the high temperature exhaust heating technique. Ensures that once the first portion completes regeneration, thermal stress on the PM filter may be reduced when using the high temperature exhaust heating technique to regenerate the second portion. Ensures that the amount of time required to regenerate the remaining second portion may be significantly reduced at temperatures greater than 650 degrees Celsius. Ensures that the remaining second portion may be regenerated more quickly using exhaust temperatures that are greater than the thermal stress temperature.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for the following:    (1) a control system including the exhaust treatment system; and    (2) an exhaust treatment method.    DESCRIPTION OF DRAWING(S) - The drawing shows the functional block diagram of an engine system including an electrically heated particulate filter.    Exhaust treatment system (52)    Oxidation catalyst (54)    PM filter (56)    Electric heater (58)    Gas sensor (64)    Exhaust temperature sensors (66-1,66-2,66-3)