US 12,146,540 B2
Method for adjusting the clearance of an electromechanical brake, brake, and control device
Peter Beier, Wunstorf (DE); and Arne Reiners, Hannover (DE)
Assigned to ZF CV Systems Europe BV, Brussels (BE)
Appl. No. 17/417,144
Filed by ZF CV Systems Europe BV, Brussels (BE)
PCT Filed Dec. 10, 2019, PCT No. PCT/EP2019/084428
§ 371(c)(1), (2) Date Jun. 22, 2021,
PCT Pub. No. WO2020/143973, PCT Pub. Date Jul. 16, 2020.
Claims priority of application No. 10 2019 100 481.0 (DE), filed on Jan. 10, 2019.
Prior Publication US 2022/0065316 A1, Mar. 3, 2022
Int. Cl. F16D 65/38 (2006.01); B60T 13/66 (2006.01); B60T 17/22 (2006.01); F16D 55/226 (2006.01); F16D 66/02 (2006.01); F16D 66/00 (2006.01); F16D 121/24 (2012.01)
CPC F16D 65/38 (2013.01) [B60T 13/662 (2013.01); B60T 17/221 (2013.01); F16D 55/226 (2013.01); F16D 66/026 (2013.01); F16D 2065/386 (2013.01); F16D 2066/003 (2013.01); F16D 2121/24 (2013.01)] 18 Claims
OG exemplary drawing
 
14. A control device (8) for determining a clearance (L) of an electromechanical brake (100), comprising:
a first interface (10) for a signal-conducting connection (6) of the control device (8) to a brake actuator (2);
a second interface (12) for a signal-conducting connection (18) of the control device (8) to an electric clearance adjustment device (20);
a data memory (14) and a processor (16),
wherein the control device (8) is configured
to activate a clearance test cycle for the brake (100);
to cause an application (204) of at least one brake pad (103) of the brake (100) toward a brake disc (105) via the brake actuator (2) and to determine a contact position (Kist), at which the brake pad (103) comes into contact with the brake disc (105) during application (204);
to determine the clearance (List) and a degree of pad wear (VB) based on the determined contact position (Kist), and
to calculate a required clearance (Lsoll) for the brake (100) and a required contact position (Ksoll) of the brake pad (103) and brake disc (105) as a function of the degree of pad wear (VB) using predefined parameters (P).