US 10,566,917 B2 · Linear motor control apparatus and linear motor control system

Abstract

A linear motor control apparatus has: a plurality of coil units; a plurality of position detecting units for detecting positions of a plurality of trucks which move over the plurality of coil units; a plurality of deviation calculating units for operating deviation information as differences between the detected truck positions and a target position of the detected truck; a plurality of position control units for operating current control signals based on the deviation information; a plurality of current control units for supplying driving currents to the coil units based on the current control signals; and a switching unit for switching the position control units to which the deviation information is transmitted or switching the current control units to which the current control signals are transmitted.

Claims12

Dependent claims

A control apparatus to control moving of a plurality of trucks in a control area, comprising:

a plurality of controllers configured to control moving of the plurality of trucks in the control area of the control apparatus, wherein the plurality of controllers are assigned to control moving of the plurality of trucks in the same control area;
and
a selector configured to control allocation of any one of the plurality of controllers to any one of the plurality of trucks in the control area, wherein
the selector controls such that:
when a first controller among the plurality of controllers is allocated to a first truck and a second truck enters the control area of the control apparatus, a second controller among the plurality of controllers, which is not allocated to any one of the trucks in the control area, is allocated to the second truck, and
when the first truck leaves the control area, the first controller is shifted to a state not to control the first truck.

3 more elements

A controlling method for a control apparatus to control moving of a plurality of trucks in a control area, the control apparatus having a plurality of controllers configured to control moving of the plurality of trucks in the control area of the control apparatus, wherein the plurality of controllers are assigned to control moving of the plurality of trucks in the same control area;

a selector configured to control allocation of any one of the plurality of controllers to any one of the plurality of trucks in the control area;
and a detecting unit configured to detect entry of a truck into the control area, wherein the controlling method comprises:
a detecting step of detecting by the detecting unit, when a first controller among the plurality of controllers is allocated to a first truck, entry of a second truck into the control area;
an allocating step of, in response to detecting the entry of the second truck into the control area, allocating to the second truck a second controller among the plurality of controllers, which is not allocated to any one of the trucks in the control area;
and
a shifting step of shifting, by the selector, the first controller to a state not to control the first truck when the first truck leaves the control area.

3 more elements

Dependencies are inferred from the claim text.

Linear motor control apparatus and linear motor control system

Life of this patent

Linear motor control apparatus and linear motor control system

Life of this patent

Abstract

Claims12