Multiphase traction elevator controller and method of use

A method for controlling a traction elevator, the traction elevator including a car movably disposed in an elevator shaft, the car suspended by a hoist rope, the hoist rope motivated by a motor, the traction elevator further including a motion sensor reporting a car position in the elevator shaft, the method comprising:

• providing a processor, including a memory and a timer;
• providing a motor controller, operatively connected to the motor and the processor;
• providing a control panel, operatively connected to the processor;
• and
• providing the memory with a set of instructions, that when executed, cause the method to:
• receive a destination command identifying a destination position from the control panel;
• choose a motion profile from a set of motion profiles;
• the set of motion profiles including a normal profile, a short distance profile, and emergency power profile and an inspection profile;
• determine an S-curve based on the motion profile;
• determine a cruise start position, a deceleration start position and a leveling start position based on the S-curve;
• monitor the car position to determine whether or not the car is at the cruise start position;
• until the car reaches the cruise start position, monitoring an elapsed trip time timer to determine if the car is in a first acceleration phase, a second acceleration phase or a third acceleration phase;
• sending a first signal to the motor if the car is in the first acceleration phase, a second signal to the motor if the car is in the second acceleration phase and a third signal to the motor if the car is in the third acceleration phase;
• monitor the car position to determine whether or not the car is at the deceleration start position;
• until the car reaches the deceleration start position, monitoring the elapsed trip time timer to determine if the car is in a cruising phase;
• sending a fourth signal to the motor if the car is in the cruising phase;
• monitor the car position to determine whether or not the car is at the leveling start position;
• until the car reaches the leveling start position, monitoring the elapsed trip time timer to determine if the car is in a first deceleration phase, a second deceleration phase or a third deceleration phase;
• sending a fifth signal to the motor if the car is in the first deceleration phase, a sixth signal to the motor if the car is in the second deceleration phase and a seventh signal to the motor if the car is in the third deceleration phase;
• monitor the car position to determine whether or not the car is at the destination position;
• until the car reaches the destination position, send an eighth signal to the motor if the car is in a leveling phase;
• and
• send a stop signal to the motor when the car reaches the destination position.