US 5,170,109 A · Method of controlling robot in event of a power failure

Abstract

Disclosed is a method of controlling a robot, for restarting the robot by resupplying an electric power in the event of a power failure. When a power failure detection circuit detects that a voltage has dropped or has been cut off, the circuit notifies an operating method (OS) of this (S1) and the OS writes a power failure flag to a non-volatile memory and stops a task being performed (S2). The data of the task being performed is saved in the non-volatile memory. After the electric power has been resupplied (S10), the OS executes a power failure processing for itself, with reference to the power failure flag (S11), initializes hardware (S12), executes a power failure processing routine for each task (S13), and restarts the operation of the robot from the position at which the robot was stopped when the power failure occurred (S14).

Claims4

Dependent claims

A method of controlling a robot for restarting the robot by resupplying an electric power thereto in the event of a power failure, comprising the steps of:

detecting by a power failure detecting circuit that a voltage has dropped or an input power supply has been cut off;
notifying an operating system (OS) through said power failure detection circuit of the detection of a voltage drop or power failure;
using said OS to write a power failure flag to a non-volatile memory and to stop a task being performed after said OS has been notified of the detection of a voltage drop or power failure;
causing said OS to execute a power failure processing for said OS with reference to said power failure flag after the voltage has been restored or electric power has been resupplied;
initializing hardware by said OS;
executing a power failure processing routine by each task in accordance with instructions from said OS;
and
operating said robot by said OS from the point at which said robot was stopped when the power failure occurred.

5 more elements

Dependencies are inferred from the claim text.

Method of controlling robot in event of a power failure

Life of this patent

Method of controlling robot in event of a power failure

Life of this patent

Abstract

Claims4