摘要:
In the field of automated guided vehicles it is particularly important that speed and steering angle feedbacks be accurate and reliable. Any deviations in these feedback signals should be promptly detected and used to alter operation of the vehicle. An apparatus (10) constantly monitors the time varying output signals of a pair of resolvers (66, 184) respectively associated with wheel rotation and steering angle. The loss of either of the resolver signals for more than a preselected duration of time related to the excitation frequency and vehicle speed results in the power delivered to an electric drive motor (220) being discontinued and the vehicle brakes being applied.
摘要:
A robot control apparatus capable of effecting the lead-through teaching easily and safely. When an operator presses down a lead-through teaching effective switch (12) provided in a control apparatus body, the supplying of electric power to a servo controller (17) is stopped, and a mechanical brake (18) is made effective. When the operator presses down a dead-man switch (4) with a teaching handle (3) gripped, an electromagnetic relay (RL1) is energized and a normally opened contact (14) is closed. Consequently, the mechanical brake (18) is made ineffective, and an electromagnetic relay (RL2) is energized at the same time, so that a normally opened contact (15) is closed to cause a power source current to be supplied to the servo controller (17). A signal making a torque instruction zero is also sent to the servo controller (17). This enables the operator to move a robot in a desired direction. When the operator discontinues to press down the dead-man switch, the mechanical brake is made effective immediately, and the robot is locked in the current position.
摘要:
A system for controlling an industrial robot, which is simplified in operation and capable of direct-teaching safely all the time. The system is provided with means (131 and 132) for monitoring a magnitude of an external force applied to the forward end of a hand during direct teaching, so that the motion of the robot can be forcibly restricted when the external force reaches a predetermined value of thereabove. Furthermore, when the system is operated to be set in a direct teach mode, a process (136) of correcting the offset of a force sensor is performed automatically. By monitoring a force detected by the force sensor, the discrimination is made as to whether an external force to operate the robot at an abnormal speed is applied to the robot or not, and, when the external force becomes higher than a reference value, a mode of prohibiting the operation of the robot by the external force (position control mode) is set, or current supplied to a servo motor is cut off to prevent the robot from going into the erroneous operation due to an erroneous control.
摘要:
A system for controlling an industrial robot, which is simplified in operation and capable of direct-teaching safely all the time. The system is provided with means (131 and 132) for monitoring a magnitude of an external force applied to the forward end of a hand during direct teaching, so that the motion of the robot can be forcibly restricted when the external force reaches a predetermined value of thereabove. Furthermore, when the system is operated to be set in a direct teach mode, a process (136) of correcting the offset of a force sensor is performed automatically. By monitoring a force detected by the force sensor, the discrimination is made as to whether an external force to operate the robot at an abnormal speed is applied to the robot or not, and, when the external force becomes higher than a reference value, a mode of prohibiting the operation of the robot by the external force (position control mode) is set, or current supplied to a servo motor is cut off to prevent the robot from going into the erroneous operation due to an erroneous control.
摘要:
This invention relates to an impingement detection/driving stop method which can quickly detect the impingement of a machine operation portion driven by a servo motor against foreign matters, can quickly stop driving of the machine operation portion when the impingement is detected and can prevent or reduce damage to the machine due to the impingement. A digital signal processor of a shaft controller constituting a software servo calculates (S2) periodically a speed difference (εv) on the basis of a command speed (Vc) calculated on the basis of the instruction from a main computer and an actual motor speed (V) from a pulse coder of a servo motor, judges (S3) whether or not the absolute value (|εv - εV'|) of the difference between the speed difference in the current servo control period and the speed difference in the preceding period is smaller than the impingement judgement reference value (ERR), displays an alarm, delivers a torque command of a value of 0 and stops the rotation of the servo motor when the absolute value is greater than the judgement reference value (S8, S9).
摘要:
Systeme de controle automatique de machines outils en fonctionnement. Le cycle de travail est divise en phases, ou des valeurs de reference differentes peuvent etre valables pour les parametres qui sont controles, p.ex. la consommation de courant de moteurs. Lorsqu'une nouvelle phase doit commencer, ceci est indique par l'operateur. De plus, il existe la possibilite d'obtenir des impulsions de changement de phase a partir de generateurs montes sur la machine outil ou le systeme de commande. Une reponse sans ambiguite sur la question de savoir ou a lieu le changement de valeurs de reference (changement de phases) dans le cycle de travail est obtenue par le fait que le systeme de controle ajoute des impulsions provenant de generateurs d'impulsions couples aux axes d'alimentation de la machine outil. Le controle est synchronise avec le cycle de travail par le fait que l'impulsion de depart du programme detaille est envoyee au systeme de controle. A l'aide d'ecarts par rapport aux valeurs de reference valables, obtenues par enregistrement, des signaux ALARME OU ARRET sont obtenus en fonction du type de l'ecart.
摘要:
Die Erfindung betrifft ein Verfahren zum Betrieb eines Bedien- und Beobachtungsgerätes (1) für sicherheitskritische Anwendungen, wobei das Bedien- und Beobachtungsgerät (1) ein Display und einen berührungssensitiven Sensor umfasst, wobei in Vorbereitung auf eine freizugebende sicherheitskritische Anwendung auf dem Display ein Bedienelement dargestellt wird, welches ein Bediener um eine Freigabe zu erhalten berühren muss, wobei die Freigabe solange erteilt wird, wie das Bedienelement berührt wird, dadurch gekennzeichnet , dass als Sensor ein berührungsempfindlicher Sensor verwendet wird, welcher dafür ausgelegt ist mehrfach Berührungen zu erkennen, wobei das Bedienelement in - einen ersten Bedienbereich (11) und in - einen zweiten Bedienbereich (12) unterteilt wird, wobei innerhalb des ersten Bedienbereiches (11) - eine erste Anzahl (L) von Berührpunkten (L1,...,L5) und innerhalb des zweiten Bedienbereiches (12) - eine zweite Anzahl (R) von Berührpunkten (R1,...,R5) dargestellt werden,
dabei werden die Positionsdaten des ersten Bedienbereichs (11) und des zweiten Bedienbereichs (12) derart gewählt, das es nicht möglich ist mit den Fingern einer menschlichen Hand gleichzeitig alle Berührpunkte (L1,...,L5) aus dem ersten Bedienbereich (12) und alle Berührpunkte (R1,...,R5) aus dem zweiten Bedienbereich (12) zu berühren, wobei die Freigabe für die sicherheitskritische Anwendung nur erteilt wird, wenn sämtliche Berührpunkte (L1,...,L5) aus dem ersten Bedienbereich (11) und sämtliche Berührpunkte (R1,...,R5) aus dem zweiten Bedienbereich (12) berührt werden,.
摘要:
A robot control apparatus capable of effecting the lead-through teaching easily and safely. When an operator presses down a lead-through teaching effective switch (12) provided in a control apparatus body, the supplying of electric power to a servo controller (17) is stopped, and a mechanical brake (18) is made effective. When the operator presses down a dead-man switch (4) with a teaching handle (3) gripped, an electromagnetic relay (RL1) is energized and a normally opened contact (14) is closed. Consequently, the mechanical brake (18) is made ineffective, and an electromagnetic relay (RL2) is energized at the same time, so that a normally opened contact (15) is closed to cause a power source current to be supplied to the servo controller (17). A signal making a torque instruction zero is also sent to the servo controller (17). This enables the operator to move a robot in a desired direction. When the operator discontinues to press down the dead-man switch, the mechanical brake is made effective immediately, and the robot is locked in the current position.
摘要:
A system for controlling an industrial robot, which is simplified in operation and capable of direct-teaching safely all the time. The system is provided with means (131 and 132) for monitoring a magnitude of an external force applied to the forward end of a hand during direct teaching, so that the motion of the robot can be forcibly restricted when the external force reaches a predetermined value of thereabove. Furthermore, when the system is operated to be set in a direct teach mode, a process (136) of correcting the offset of a force sensor is performed automatically. By monitoring a force detected by the force sensor, the discrimination is made as to whether an external force to operate the robot at an abnormal speed is applied to the robot or not, and, when the external force becomes higher than a reference value, a mode of prohibiting the operation of the robot by the external force (position control mode) is set, or current supplied to a servo motor is cut off to prevent the robot from going into the erroneous operation due to an erroneous control.