Abstract: The present invention pertains to an advanced traction control system designed to enhance the performance of traction elevators. This system integrates multiple components and a novel S-curve algorithm to optimize acceleration and deceleration profiles, ensuring smooth transitions and improved ride quality. Key components include a central controller, motor room board, hall panel controllers, and a car panel controller. The system supports high-speed applications, accommodating speeds up to 1400 feet per minute. The S-curve routine is divided into acceleration, constant speed, and deceleration phases, with digital speed commands transmitted via a serial communication link to the motor drive every 10 milliseconds. This precise control reduces mechanical wear and enhances passenger comfort. The system can adapt to various speed profiles, including normal, short, inspection, and emergency power modes, ensuring optimal performance under different conditions.

Abstract: An apparatus and method for controlling a hydraulic elevator system involves setting a baseline slowdown distance based on initial tuning, establishing a target leveling time in 0.1-second intervals, monitoring elevator operations to capture high speed, transition distance, leveling speed, leveling distance data, and adjusting the reference slowdown distance to align actual leveling times with the target time. A logarithmic averaging method is employed to calculate the reference slowdown distance, ensuring consistent elevator performance by smoothing out data variations.