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A current command limiter prevents the current command from exceeding a predetermined maximum value. A retractable awning as claimed in claim 17, wherein the storage roller is driven by the second motor. A retractable awning as claimed in claim 2, wherein the control unit is arranged to control the motors in accordance with the sensed tension.
In one embodiment, the local master control unit may control the motion of the master motor in further dependence on the velocity of the storage roller. The distal end of the canopy will preferably be provided with at least a pair of motors arranged to extend the canopy. However, this arrangement does provide a more direct measurement of the tension in the screen 3.
In the past, tension has typically been provided by means of springs so that as the screen is extended further, more tension is applied by the springs.
Home Automation Domotica Forum Europe, Bwired Forum • View topic – Halcomaster
It is also easier with a smaller span to hapcomaster the tension required to prevent sagging of the screen at that angle. The transverse bar 5 provides support so as to prevent transverse sag of the screen. Some images exist copyright, please respect the copyright of the original author.
The forces acting on each clamping unit may differ, thus causing them to move at different speeds despite having equal drive applied by the motors. The slave keeps locked to the master location.
USA1 – Retractable awning – Google Patents
The present inventor’s earlier patent application, GB, discloses a new type of covering system whereby a leading portion halcomasher a retractable screen is mounted to a number of longitudinal wires via clamping systems releaseably attached to the wires. As halclmaster is applied to the screen 3tension is also applied to the support poles 18 and to the guy wires Not only does this make the screen less effective, but it can damage the screen.
At the same time, as the screen is extended further, an increasingly greater transverse tension is applied to the screen.
This activates the bidirectional bumper of the limit switch and causes it to send a signal to a respective halcomxster controller 5464 of the end unit described in more detail below with reference to FIG. However, it will be appreciated that an alternative control system is equally applicable in which the motors in the end units and in the storage roller are all controlled directly by the main control unit.
It also sends appropriate halcoaster commands to the slave end unit 21 over an RS communications channel via a data cable 57 and respective connections 62 halcomsater, A retractable awning as claimed halcomasrer claim 1wherein the first motors are attached to the screen.
Preferred embodiments of the present invention will halcoomaster be described by way of example only and with reference to the accompanying drawings, in which:. If you were an SEOer or online marketer, the data on the analysis of the keyword ” Halcomaster Gebruiksaanwijzing ” would be very helpful.
In one embodiment, the local master control unit may control the motion of the master motor in further dependence on the velocity of the storage roller.
During most of the travel between closed and open positions, the position error is large because the awning is a long way from the desired fully open position 200 so the value of the velocity command is constant because it is limited to the maximum velocity command.
The motion control unit 30 directly controls the stationary AC motor 35which drives the storage roller 2. Most preferably, they are coordinated or synchronised so as to maintain tension in the screen within predetermined values.
By monitoring the amount of load on the end supports, the amount of tension in the screen can be deduced. However, the clamping systems will halcomasteg subject to external forces such as wind, and other obstacles to movement such as debris on the tensile wires. The master local controller 64 uses this information to calculate the mutual position error of the master and slave end units.
This may be effected by each of the end units monitoring their position e.
Instead, each motor would send data to and receive commands from the main control unit directly. The support pole 18 is typically embedded in the ground and is angled slightly away from the vertical in a direction substantially opposite to that in which tension is to hxlcomaster applied.
A retractable awning as claimed in claim 1, wherein the first motors are arranged to pull a leading edge of the screen and the second motor is arranged to pull a trailing edge of the screen.
However, it will be appreciated that an alternative control system is equally applicable in which the motors in the end units and in the storage roller are all controlled directly by the main control unit.
The master local controller 64 is in position loop mode and activates the DC motor 9 M via motor connection 61which drives the roller system 6 via worm gear 8 and causes it to move along cable 4 towards the storage roller 2. The storage roller 2 and cable ends are attached to a wall. The cables 4 of this embodiment are splayed apart in the direction of extension of the screen 3.
The other end of each cable 4 is attached to a supporting pole 18 which is anchored to the ground using guy wires A retractable awning as claimed in claim 9, wherein each engaging member comprises two rollers forming a roller system.
However, large covering systems are desirable for many applications, such as providing rain and sun protection halcomasyer large patios, tennis courts or swimming pools and allowing them to be used or enjoyed in comfort.
The position error may also be monitored and corrected when the end units are stationary e. If the motors are provided adjacent to the end supports, the tension meter may be positioned between the tensile wire and the screen. As shown in more detail in FIG. The position and velocity of the screen 3 can be monitored by means of rotary encoders in the storage roller and in the winches in the same way as in the first embodiment.
A retractable awning as claimed in claim 1wherein halcomasteer first motors are arranged to pull a leading edge of the screen and the second motor is arranged to pull a trailing edge of the screen. They may alternatively be slaved from a halcmoaster drive motor.