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Application Notes
The electronic parking brake control (EPB) system is replacing the traditional foot pedal or hand lever, utilizing only a control switch with electrical cabling routed to the controller. Drivers can hold their vehicle on a slope at the press of a button, which engages the rear brake system to automatically hold the vehicle at a standstill, and releases the brakes when required. In addition, EPB can be integrated with other vehicle systems, such as drive away assist, hill start assist, and stability control systems that provide comfort, convenience and performance.
EPB functionality relies on the following: control switches input, wheel speed sensor, force sensor and electric motors which monitor various input signals to determine the desired output – such as whether to apply or release the brakes. Figure 1a shows the simplified block diagram of a typical EPB in operation. The functional test setup for a typical EPB will require emulation or simulation for measurement.
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