摘要: |
Specific objectives and questions to be addressed by the study include the following: Instrumented anchor pins for S-cam drum brakes; Does the output provide an accurate representation of braking forces; Is it necessary to instrument both upper and lower anchor pins; How responsive is the output; How could the sensors be used to detect defects; Is a simplified design possible; Wheel-speed sensing; Can ABS wheel speed sensors be used to determine wheel slip and its relationship to brake force be used to detect brake system defects; Air chamber stroke sensing systems are already available in the marketplace; How accurate and reliable are such systems; What defects can they detect; What malfunctions might they miss or not detect; Is it important to monitor brake stroke continuously, or is measurement of over/under stroke sufficient; Deceleration measurements: Comparing deceleration with air brake pressure input to determine total brake force can be used to detect brake defects. / Supplementary Notes: Sponsored by Federal Motor Carrier Safety Administration, Washington, DC. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |