The present invention discloses an anti-stalling circuit, an anti-stalling system composed of same and an anti-stalling method. The anti-stalling circuit includes a motor main circuit and a control circuit; the anti-stalling system includes a substrate rotating synchronously with a passive end and the passive end anti-stalling circuit, the substrate is provided with a notch, the angle of the notch ranges from 150° to 170°, and the proximity switch SQ1 and the proximity switch SQ2 are installed at 180° on both sides of the substrate; and the passive end anti-stalling method is applied to the passive end anti-stalling system. The present invention can greatly reduce the probability of major failures caused by the stalling of a passive end of drive equipment at a limited cost.

Embodiments of the invention provide systems and methods for monitoring and removing contaminants from a conveyor surface based upon predicted frictional engagement qualities detected on a conveyor surface. In some examples, the methods may include monitoring the conveyor surface with at least one sensor configured to sense a condition on the conveyor surface. The sensor may detect the presence of a contaminant, and communicate the location of the detected contaminant to a processor. A treatment cycle may then be initiated to remove or displace the contaminant from the conveyor surface after the presence of a contaminant has been detected.

Embodiments of the invention provide systems and methods for monitoring and removing contaminants from a conveyor surface based upon predicted frictional engagement qualities detected on a conveyor surface. In some examples, the methods may include monitoring the conveyor surface with at least one sensor configured to sense a condition on the conveyor surface. The sensor may detect the presence of a contaminant, and communicate the location of the detected contaminant to a processor. A treatment cycle may then be initiated to remove or displace the contaminant from the conveyor surface after the presence of a contaminant has been detected.

In one example, a method of controlling a printing system is described, the method comprising activating a driver to advance a conveyor belt in a plurality of sub-turns. For each of the plurality of sub-turns, a first parameter associated with movement of the conveyor belt is determined, based on data obtained from the driver. For each of the plurality of sub-turns, a second parameter associated with movement of the conveyor belt is also determined, based on data obtained from an optical sensor. A per-sub-turn slippage parameter is calculated for each of the plurality of sub-turns, based on any difference between the first parameter and the second parameter. The method further comprises calculating a slippage metric based on the per-sub-turn slippage parameters for the plurality of sub-turns, and causing outputting of a conveyor belt tension adjustment indication.

A method for monitoring a belt conveyor with a circulating conveyor belt includes the steps of determining at least one operating parameter of the belt conveyor; determining running resistances at different points along the conveyor belt on the basis of the at least one determined operating parameter; determining a sum of the determined running resistances over the length of the conveyor belt; and adapting the determination of the running resistances, in order to minimize a deviation of the drive power which is calculated from the determined sum from the measured drive power.

A method for monitoring a belt conveyor with a circulating conveyor belt includes the steps of determining at least one operating parameter of the belt conveyor; determining running resistances at different points along the conveyor belt on the basis of the at least one determined operating parameter; determining a sum of the determined running resistances over the length of the conveyor belt; and adapting the determination of the running resistances, in order to minimize a deviation of the drive power which is calculated from the determined sum from the measured drive power.

An apparatus for sensing an obstruction within a tube being cleaned and repetitively advancing and retracting a flexible high pressure fluid cleaning lance within the tube is disclosed. The apparatus monitors drive roller/belt position and actual hose position, compares the belt (expected travel) to hose position (travel) and generates a position difference, or mismatch. If the mismatch is above a predetermined level, the drive motor direction is reversed for a predetermined time interval, and forward operation restored after the predetermined time interval; and the sequence of repeating the reversing and restoring operations is continued until the position difference or mismatch no longer exceeds the predetermined difference threshold.

An apparatus for sensing an obstruction within a tube being cleaned and repetitively advancing and retracting a flexible high pressure fluid cleaning lance within the tube is disclosed. The apparatus monitors drive roller/belt position and actual hose position, compares the belt (expected travel) to hose position (travel) and generates a position difference, or mismatch. If the mismatch is above a predetermined level, the drive motor direction is reversed for a predetermined time interval, and forward operation restored after the predetermined time interval; and the sequence of repeating the reversing and restoring operations is continued until the position difference or mismatch no longer exceeds the predetermined difference threshold.

A method and system of fault prediction in a packaging machine is disclosed. The method comprises registering data values associated with the motion of independently movable objects along a track in the packaging machine; determining a distribution of the data values; calculating a measure of central tendency of the data values in the distribution; calculating a quantified measure of a shape of the distribution; associating the measure of central tendency with said quantified measure of the shape as a coupled set of condition parameters; determining a degree of dispersion of a plurality of coupled sets of condition parameters associated with a plurality of motion cycles of the independently movable objects; and comparing the degree of dispersion with a dispersion threshold value, or determining a trend of the degree of dispersion over time, for said fault prediction.

The present invention relates to an anti-skid speed measurement and material flow detection device for a belt conveyor, include a base symmetrically arranged on the intermediate frame of the belt conveyor and arranged between two groups of slotted roller supports, sliding supports arranged on the base, a speed measurement roller and a sensor arranged on the two groups of sliding supports, and a control system connected with the sensor, a speed measurement disk is sleeved on an end face of one end of a barrel of the speed measurement roller, a circular hole is formed on the circumference of the speed measurement disk, the circular hole is arranged corresponding to the position of the senso. Compared with the prior art, the present invention has the advantages of dramatically reduced production cost and maintenance cost, simple structure and high reliability.