CONTROLLING METHOD OF LINEAR MOTOR ELEVATOR AND ITS CONTROLLER

摘要

PROBLEM TO BE SOLVED: To prevent generation of the speed fluctuation of a car at a conductor connection part by controlling the thrust fluctuation of a linear motor to be generated in passing the connection part in terms of the current and the frequency. SOLUTION: The difference ΔV between the speed command V* from a speed control device 51 and the output signal V of a speed detector 52 is received by a speed controller 53. The speed controller 53 generates the output signal corresponding to the difference ΔV, and outputs the thrust command signal T* of a linear motor. When a primary side 11 is passed through a connection part 12a of a secondary side conductor 12, a thrust fluctuation compensation device 54 outputs the compensation signal Tc to compensate the thrust fluctuation. An adder 55 adds the thrust command signal T* from the speed controller 53 to the compensation signal Tc from the thrust fluctuation compensation device 54, and inputs the sum to a current controller 56. The output from the current controller 56 is inputted in an inverter 57, and the inverter 57 performs the PWM control. The current flowing in the linear motor is controlled by controlling the output current and the output frequency of the inverter 57.