Augmenting Extended Kalman Filters with Dynamic Temperature Derivative State Models
Augmenting Extended Kalman Filters with dynamic temperature derivative states eliminates dynamic thermal bias drift during rapid ramp conditions.
ISO 16750
Environmental Specification
An international standard that defines the environmental conditions and electrical testing protocols for electrical and electronic equipment in road vehicles establishes a uniform framework for automotive supply chains. This multi-part document, designated as ISO 16750, governs how components must perform when subjected to environmental and electrical stresses.
Electrical Testing
The standard outlines specific laboratory tests for electrical loads, including overvoltages, starting profiles, and superimposed alternating voltages. These trials simulate the harsh electrical environment of a vehicle engine bay during start-up or alternator charging phases. The testing validates that the design can survive these transients without malfunctioning or suffering permanent damage.
Environmental Exposure
Additional parts of the document specify the mechanical, climatic, and chemical tests required to validate automotive electronics. These trials include long-term vibration exposure, thermal shock between extreme temperatures, and exposure to common automotive fluids like oil and battery acid. Performing these tests under controlled conditions ensures that a component will endure the lifetime of the vehicle.
Compliance Criteria
The document establishes clear functional status classifications to describe how a device must behave during and after each test. For instance, some minor anomalies are permitted during a transient test, provided the device automatically restores itself to full performance afterward. This graded compliance approach allows the design of robust systems that balance manufacturing cost with the reliability requirements of modern vehicles.