bendik.vignes@gmail.com
10 mW
- Joined
- Aug 16, 2016
- Messages
- 24
Hi all!
I have experienced some strange behaviour using the Cycle Analyst V3 with a TDCM torque sensor. I hope someone can help!
Here are some general details:
-Three wheel cargo bike. Dual (front) motor drive: Golden Motor Blt800, chain drive)
- 2x Grinfineon 35A controllers
-external CA3 shunt
-cycle analyst CA3-DPS
-TDCM torque bottom bracket
Note: The bike behaves fine when operated with the thumb throttle
Some relevant cycle analyst settings:
-Max current: 55A
-Max power: 2200W
-A Gain: 60
-W Gain: 10
-Throttle in, Min input: 1.05V (0.20V above actual min throttle input of 0.85V)
-pas mode: TrqPas
-pas poles: 12
-start/stop thrsh: 7/11
There seem to be some strange behaviour related to the torque sensor settings:
-Whenever asststart is a positive number (including +0W) there is no throttle out voltage sent to the controllers, so no motor power (and limit flag for power is a capital W). When asststart is any negative number (including -0W) a throttle out voltage is sent to the controllers when pedaling.
- With asstfactr of more than 0.5 results in high throttle out voltage and the bike just flyes away. Asstfactr is now set to 0.15
-when trqscale is set to approx 50Nm/V, both live Nm readings and Hwt looks fine, but throttle out voltage is apparently unaffected of pedal torque or pedal rpm
-when trqscale is set very high (several hundreds Nm/V) there is some proportional throttle out voltage: 1.6V when very light pedaling, to approx 2V for high pedal torque and pedal rpm.
-now the CA is set to asstfactr = 0.15 and trqscale =650Nm/V and the bike behaves "almost ok". But still too much "start power", and too much assist power when pedaling light
-limit flag for power is constantly W during PAS operation (even if motor power is far from 2200W)
Could there be an issue with the power limit feedback function of the CA?
I hope someone can help
I have experienced some strange behaviour using the Cycle Analyst V3 with a TDCM torque sensor. I hope someone can help!
Here are some general details:
-Three wheel cargo bike. Dual (front) motor drive: Golden Motor Blt800, chain drive)
- 2x Grinfineon 35A controllers
-external CA3 shunt
-cycle analyst CA3-DPS
-TDCM torque bottom bracket
Note: The bike behaves fine when operated with the thumb throttle
Some relevant cycle analyst settings:
-Max current: 55A
-Max power: 2200W
-A Gain: 60
-W Gain: 10
-Throttle in, Min input: 1.05V (0.20V above actual min throttle input of 0.85V)
-pas mode: TrqPas
-pas poles: 12
-start/stop thrsh: 7/11
There seem to be some strange behaviour related to the torque sensor settings:
-Whenever asststart is a positive number (including +0W) there is no throttle out voltage sent to the controllers, so no motor power (and limit flag for power is a capital W). When asststart is any negative number (including -0W) a throttle out voltage is sent to the controllers when pedaling.
- With asstfactr of more than 0.5 results in high throttle out voltage and the bike just flyes away. Asstfactr is now set to 0.15
-when trqscale is set to approx 50Nm/V, both live Nm readings and Hwt looks fine, but throttle out voltage is apparently unaffected of pedal torque or pedal rpm
-when trqscale is set very high (several hundreds Nm/V) there is some proportional throttle out voltage: 1.6V when very light pedaling, to approx 2V for high pedal torque and pedal rpm.
-now the CA is set to asstfactr = 0.15 and trqscale =650Nm/V and the bike behaves "almost ok". But still too much "start power", and too much assist power when pedaling light
-limit flag for power is constantly W during PAS operation (even if motor power is far from 2200W)
Could there be an issue with the power limit feedback function of the CA?
I hope someone can help