Stator segment for a linear motor-based transport system and transport system

Patent metadata

Field	Value
Publication number	US-10103672-B2
Application number	US-201715488838-A
Country	US
Kind code	B2
Filing date	Apr 17, 2017
Priority date	Apr 22, 2016
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A stator segment for a linear motor-based transport system is developed to the effect that a transmitter for cyclic transmission of a control data record in a first clock cycle also transmits, in addition to transmitting the control data record, a position value in a clock-synchronized manner, wherein a plurality of positions are available as a sequence with a quantity of elements and an element with an index corresponds to a position, where the transmitter unit is configured such that, upon every first clock cycle, the index is incremented commencing from a starting value and an element is transmitted after the control data record, where the transmitter unit is furthermore configured to transmit all elements in one transmission interval, and where the transmission interval corresponds to a multiple of the first clock cycle.

First claim

What is claimed is:

1. A stator segment for a linear motor-based transport system comprising:
coils arranged to generate a magnetic traveling field;
a position acquirer which determines a position of a transport rotor located on the stator segment, said position acquirer detecting a plurality of positions of a plurality of transport rotors located on the stator segment;
a transmitter which cyclically transmits a control data record in a first clock cycle, said transmitter being configured such that, in addition to transmitting the control data record, a position value is also transmitted in a clock-synchronized manner; and
an evaluation unit connected to the position acquirer to determine the detected plurality of positions and connected to the transmitter to transfer each of the detected plurality of positions to the transmitter;
wherein the plurality of positions are available as a sequence with a quantity of elements and an element with an index (i) corresponds to a position; and
wherein the transmitter is further configured such that, upon every first clock cycle, the index (i) is incremented commencing from a starting value and the element is transmitted after the control data record, and further configured such that transmission of all elements in one transmission interval.

2. The stator segment as claimed in claim 1 , wherein the evaluation unit is configured to determine each of the plurality of positions in a second clock cycle and the second clock cycle corresponds to a multiple of the first clock cycle.

3. A transport system comprising:
a stator segment configured for a linear motor-based transport of transport rotors with a coil which generates a magnetic traveling field;
a first bus;
a second bus;
a monitor;
a controller;
a position acquirer which determines a position of a transport rotor located on the stator segment, said position acquirer being configured to detect a plurality of positions of a plurality of transport rotors located on the stator segment; and
a transmitter connected to the first bus, said transmitter cyclically transmitting a control data record in a first clock cycle, and said transmitter being configured such that, in addition to transmitting the control data record, a position value is also transmitted in a clock-synchronized manner;
an evaluation unit connected to the position acquirer to determine the detected plurality of positions and connected to the transmitter unit to transfer the detected plurality of positions to the transmitter;
wherein the plurality of positions are available as a sequence with a quantity of elements and an element with an index (i) corresponds to a position;
wherein the transmitter is further configured such that, upon every first clock cycle, the index (i) is incremented commencing from a starting value and the element is transmitted after the control data record to the monitoring unit via the first bus, and further configured such that transmission of all elements in one transmission interval; and
wherein the monitor is configured to receive the sequence and configured to transfer the sequence to the controller via the second bus.

4. The transport system as claimed in claim 3 , wherein the controller is configured to determine, aided by the plurality of positions, a geographical representation of the locations of all the transport rotors situated in the system.

5. The transport system as claimed in claim 4 , wherein a converter is connected to the coil which generate the magnetic traveling field.

6. The transport system as claimed in claim 3 , wherein a converter is connected to the coil which generate the magnetic traveling field.

7. The transport system as claimed in claim 6 , wherein the monitor is connected to the converter via the first bus.

8. The transport system as claimed in claim 3 , wherein the position acquirer comprises a travel recorder which operates in accordance with one of the following principles: magnetostrictive, capacitive, magnetic, optical and or differentially transforming.

9. The transport system as claimed in claim 8 , wherein the travel recorder operates magnetically in accordance with Hall effect principles as a multi-position acquirer.

10. The transport system as claimed in claim 3 , wherein the position acquirer is arranged such that it is uninfluenced by a secondary part of the transport rotor; and wherein the transport rotors have a permanent magnet or an optical element as a position sensor for the position acquirer to determining positions.

Assignees

• Siemens Ag
• Festo Ag & Co Kg

Inventors

• Albert Fabian
• Gierden Marco
• Hartramph Ralf
• Jaentsch Michael
• Rothe Sven
• Spindler Carsten
• Veit Andreas

Classifications

• H04L12/4035

  in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit (TDM/TDMA multiplex systems per se H04J3/1694; hybrid switching systems H04L12/64) · CPC title

• H02K41/031

  of the permanent magnet type · CPC title

• B60L15/005

  for control of propulsion for vehicles propelled by linear motors · CPC title

• B65G54/02

  electrostatic, electric, or magnetic · CPC title

• H02K11/35

  Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis · CPC title