Torque Analysis - Revision history

Mirco Smerecnik: /* Analysis screen */

2022-08-02T14:29:57Z

‎Analysis screen

Mirco Smerecnik: /* Analysis screen */

2022-08-02T14:14:44Z

‎Analysis screen

Mirco Smerecnik: /* Analysis screen */

2022-08-02T14:13:51Z

‎Analysis screen

Mirco Smerecnik: /* Analysis screen */

2020-08-24T12:40:09Z

‎Analysis screen

Mirco Smerecnik: /* Analysis screen */

2020-08-24T12:37:46Z

‎Analysis screen

Mirco Smerecnik: /* Network setup */

2017-08-16T09:21:47Z

‎Network setup

Shawn Imming at 11:44, 1 June 2017

2017-06-01T11:44:08Z

Mirco Smerecnik at 18:10, 5 May 2017

2017-05-05T18:10:37Z

Administrator: /* Settings */

2015-08-12T08:24:19Z

‎Settings

Administrator: /* Analysis screen */

2015-03-12T10:58:32Z

‎Analysis screen

← Older revision		Revision as of 14:29, 2 August 2022
Line 165:		Line 165:
	* Definition of Angular velocity: Angular velocity (rad/s) = Cadence (rpm) * 2π / 60<br />		* Definition of Angular velocity: Angular velocity (rad/s) = Cadence (rpm) * 2π / 60<br />

		+	* Principle of the Torque and Power measurments and calculation: <br />
		+	* <gallery>
		+	File:01_Power_Measurement_in_cycling.jpg\|Torque Calculation
		+	File:02_Power_Measurement_in_cycling.jpg\|Power Calculation
		+	</gallery>

	:'''2<sup>nd</sup> Example'''		:'''2<sup>nd</sup> Example'''

← Older revision		Revision as of 14:14, 2 August 2022
Line 161:		Line 161:

	* All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 181 degrees with the frequency of 882 [Hz] and a Zero Offset of 354 [Hz] the torque is calculated at 33.4 [Nm].		* All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 181 degrees with the frequency of 882 [Hz] and a Zero Offset of 354 [Hz] the torque is calculated at 33.4 [Nm].
−	* Calculating method: (882 [Hz] - 354 [Hz]) / 15.8 [Hz/Nm] = 33.4 [Nm]	+	* Calculating method for the Torque: (882 [Hz] - 354 [Hz]) / 15.8 [Hz/Nm] = 33.4 [Nm]
		+	* Calculating method for the Power for every angle: Power = Torque [Nm] * Angular velocity (rad/s)
		+	* Definition of Angular velocity: Angular velocity (rad/s) = Cadence (rpm) * 2π / 60<br />

@@ Line 144: / Line 144: @@
 :If you export one revolution or an average data file the CSV file syntax is defined according to the following pattern:
-:ROW 1: Header: Index, Cadence, Power, Torque, Slope, Zero, Delay, Cranklenght, Weight,
+:ROW 1: Header: Index, Cadence, Power, Torque, Slope, Zero, Delay, Cranklengtt, Weight,
-:ROW 2 ... N: Body: Angle [Deg], Value [Hz]<br />
+:ROW 2 ... N: Body: Angle [Deg], Frequency [Hz]<br />
 :The attached [[Media:Example Torque Data Export (1 revolution).csv|example torque data file]] has got the following header: 76,73.61963,176.0,22.844606,15.8,354.0,120.0,172.5,80
@@ Line 160: / Line 160: @@
 :Weight: 80 kg
-:All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 181 degrees with the frequency of 882 [Hz] and a Zero Offset of 354 [Hz] the torque is calculated at 33.4 [Nm].
+* All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 181 degrees with the frequency of 882 [Hz] and a Zero Offset of 354 [Hz] the torque is calculated at 33.4 [Nm].
-:Calculating method: (882 [Hz] - 354 [Hz]) / 15.8 [Hz/Nm] = 33.4 [Nm]
+* Calculating method: (882 [Hz] - 354 [Hz]) / 15.8 [Hz/Nm] = 33.4 [Nm]
 :'''2<sup>nd</sup> Example'''

@@ Line 151: / Line 151: @@
 :Header
 :Index: 76
-:Cadence: 73.61963
+:Cadence: 73.61963 rpm
-:Power: 176.0
+:Power: 176.0 Watt
-:Torque: 22.844606
+:Torque: 22.844606 Nm
-:Slope: 15.8
+:Slope: 15.8 Hz/Nm
-:Zero Offset: 354.0
+:Zero Offset: 354.0 Hz
 :Delay: 120.0
-:Crank Length: 172.5
+:Crank Length: 172.5 mm
-:Weight: 80
+:Weight: 80 kg
-:All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 181 degrees with the frequency of 882 [Hz] and a Zero Offset of 354 [Hz] the torque is calculated at 44.2 [Nm].
+:All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 181 degrees with the frequency of 882 [Hz] and a Zero Offset of 354 [Hz] the torque is calculated at 33.4 [Nm].
-:Calculating method: (882 [Hz] - 354 [Hz]) / 15.8 [Hz/Nm] = 44.2 [Nm]
+:Calculating method: (882 [Hz] - 354 [Hz]) / 15.8 [Hz/Nm] = 33.4 [Nm]
 :'''2<sup>nd</sup> Example'''

@@ Line 147: / Line 147: @@
 :ROW 2 ... N: Body: Angle [Deg], Value [Hz]<br />
-:The attached [[Media:Example Torque Data Export (1 revolution).csv|example torque data file]] has got the following header: 12,50.319,312.0,59.351173,17.5,479.0,30.0,170,90
+:The attached [[Media:Example Torque Data Export (1 revolution).csv|example torque data file]] has got the following header: 76,73.61963,176.0,22.844606,15.8,354.0,120.0,172.5,80
 :Header
-:Index: 12
+:Index: 76
-:Cadence: 50.319
+:Cadence: 73.61963
-:Power: 312.0
+:Power: 176.0
-:Torque: 59.351173
+:Torque: 22.844606
-:Slope: 17.5
+:Slope: 15.8
-:Zero Offset: 479.0
+:Zero Offset: 354.0
-:Delay:30.0
+:Delay: 120.0
-:Crank Length: 170,0
+:Crank Length: 172.5
-:Weight: 90
+:Weight: 80
-:All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 180 degrees with the frequency of 773 [Hz] and a Zero Offset of 479 [Hz] the torque is calculated at 44.2 [Nm].
+:All susequent lines represent the angles and the frequency. That means that you can calculate the torque for every angle by dividing the given frequency by the slope. At the angle of 181 degrees with the frequency of 882 [Hz] and a Zero Offset of 354 [Hz] the torque is calculated at 44.2 [Nm].
-:Calculating method: (773 [Hz] - 479 [Hz]) / 17.5 [Hz/Nm] = 44.2 [Nm]
+:Calculating method: (882 [Hz] - 354 [Hz]) / 15.8 [Hz/Nm] = 44.2 [Nm]
 :'''2<sup>nd</sup> Example'''

@@ Line 79: / Line 79: @@
   File:06-Torque-IP-settings.jpg|Internet Protocol Version 4 (TCP/IPv4)
   File:07-Torque-IP-settings.jpg|Use the following address
-  File:08-Torque-IP-settings.jpg|IP address: 192.168.0.89
+  File:08-Torque-IP-settings.jpg|IP address: 192.168.0.88
   </gallery>

← Older revision		Revision as of 11:44, 1 June 2017
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	This option will enable a cadence signal for each revolution when the signal is triggered.		This option will enable a cadence signal for each revolution when the signal is triggered.

		+	==Tapping the torque data==
		+	The question has been asked before if it is possible to tap the torque signal directly from the SRM ergometer without using a Torque Box. Well it is possible to get 2 signals straight out of the PowerMeter of the SRM ergometer: the zero offset and the cadance. The rest of the parameters will be derived from these 2 signals. Some of those paramaters (like the torque signal) are designed by SRM itself and therefore their "secrets" are not released in public. The 2 pictures below are from an oscilloscope (500 Hz) showing the 2 signals (the short one is the zero offset and the long one the cadance).
		+
		+	<gallery>
		+	File:TEK0002.JPG\|Zero offset signal oscilloscope
		+	File:TEK0004.JPG\|Cadence signal oscilloscope
		+	</gallery>

	==Troubleshooting==		==Troubleshooting==

@@ Line 5: / Line 5: @@
 }}
-The SRM Ethernet Torque Analysis hardware and software is designed to display pedaling torque inputs in real time and provide the user with the ability to save and analyze tha data with a recording rate of 200 Hz.
+The SRM Ethernet Torque Analysis hardware and software is designed to display pedaling torque inputs in real time and provide the user with the ability to save and analyze the data with a recording rate of 200 Hz.
 Torque data is useful when working to determine optimum bike fit, the result of changes made to position, athlete pedaling dynamics, and when working to rehabilitate after injury. Data collected can be saved, reloaded, and exported for use in various other applications and formats.

@@ Line 219: / Line 219: @@
 * '''PowerMeter'''
-:The "PowerMeter“ tab is needed to change the PowerMeter's parameters. You can define the zero offset value and the slope of the PowerMeter as well as the starting position of the revolution.
+:The "PowerMeter“ tab is needed to change the PowerMeter's parameters. You can define the zero offset value and the slope of the PowerMeter as well as the starting position (Activation Point) of the revolution. The Activation Point does not affect the data collection, it only serves the graphic adaptation and displacement of the zero point (0°).
 * '''Network'''