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This paper presents a method of controlling the seat heater using intentional oscillations between multiple, independently controlled temperatures (each with its own tolerance range). The amplitude and frequency of these oscillations can be changed based on secondary trigger events such as changes in the interior temperature. The benefits of using this technique to heat the seat surface are improved thermal sensation and reduced energy usage over the typical drive time.

Seat Heater testing methods traditionally rely on a human subject to provide normal contact, load, and thermal conditions. This creates a thermal environment closer to what an actual customer might experience but it also introduces a variation from individual subject’s seating posture, body size, and metabolic differences. This paper describes the development and initial testing results of a passive, heated seat testing manikin (or HANIKIN) that is intended to replace human subjects for more meaningful, repeatable objective testing.